Electric motor and/or generator with mechanical tuning of magnetostatic field

FIELD: engines and pumps.

SUBSTANCE: invention relates to electric motors and generators, in particular to regulation of a position of permanent magnets and/or of shunting inserts made from non-magnetoconductive material, in a rotor. AC motor or generator contains fixed windings (or stator), located around a rotor with permanent magnets. The permanent magnets are usually made cylindrical and they have two magnetic poles. Magnetoconductive loops are formed by magnets located in magnetoconductive pole terminals. During rotation of permanent magnets and/or shunting inserts made from conductive non-magnetic material, in pole terminals the force of resulting magnetic field for torque (at low speed) or efficiency (at high speed) regulation of AC motor or generator is increased or decreased. By change of a rotor magnetic field the voltage output of AC generators is regulated with a possibility of ensuring, for example, of constant voltage at the output of the generator with wind motor.

EFFECT: increase of overall performance at various rotational speeds.

20 cl, 55 dwg

 

[0001] This application claims the priority application for U.S. patent No. 12/610,271, filed October 30, 2009, and the priority application for U.S. patent No. 12/905,834, filed October 15, 2009, the contents of which are incorporated into this description by reference.

The technical field

[0002] the Present invention relates to electric motors and generators, and in particular, for regulating the position of the fixed magnets and/or shunt liners made of magnatunebrowser material in the rotor to ensure the effective operation at different speeds.

The level of technology

[0003] For operation at different frequencies of rotation (PRM) can often be used brushless DC motors, reaching efficiency in the work only in limited ranges of frequencies of rotation. In addition, it is often necessary generators, in particular alternating current generators, for use in a wide range of speeds. For example, automotive alternators operate at speeds proportional to the engine speed, and wind alternators operate at speeds proportional to the wind speed. Unfortunately, known alternators generate electricity at a voltage proportional to the frequency of rotation.

Because the managed speed is not easy, it is often to regulate the output voltage required other elements that increase the loss of energy, complexity and cost of systems alternators.

[0004] To extend the range of speeds in some designs have attempted "field weakening" with the aim of obtaining high efficiency of the motor at very low speed while preserving high efficiency when working with large rotational speed. This field weakening can be used in synchronous motors with internal permanent magnets (IPMSM) or synchronized asynchronous AC motors, helping increase 3-4 times the rated motor speed (rotation speed) while maintaining adequate effectiveness. Unfortunately, the field weakening conventional methods can lead to a reduction in efficiency at high speed and increase the complexity of the algorithms and software of the controller.

[0005] In the generator and/or alternator output voltage in proportion to the magnitude of the magnetic flux, which leads to the necessity of using an inverter or a separate coil excitation in motor generators, the efficiency of which is only 60-70% because of the wide range of operating speeds. Analogion the problems arise in the production of wind energy, where changes in wind speed result in the loss of produced energy.

Description of the invention

[0006] the Present invention eliminates the above disadvantages by creating a device and method for controlling the magnetic field brushless motors and alternators for their effective work in a wide range of speeds. The engine or the alternator contains a fixed winding (or stator), arranged around a rotatable rotor containing permanent magnets. Permanent magnets typically have a cylindrical shape and two magnetic poles, namely Northern (N) and South (S) magnetic poles located along the length of the magnets.

Conductive paths formed by the magnets located in the conductive pole pieces (for example from low-carbon or mild steel and/or insulating layers namagnichivaemost material). By turning the permanent magnet or shunt liners, made of conductive non-magnetic material, the pole pieces there is an increase or decrease of the resulting magnetic field for regulating the rotational speed of the engine or alternator torque at low speed or efficiency when the frequency of the treatment. By changing the rotary magnetic field is regulation of the output voltage of the alternating current generators, such as generator wind turbine, with capability of maintaining a constant output voltage. Another material used in the rotor is a non-magnetic steel, for example stainless steel.

[0007] According to one variant of the present invention, the proposed device and method of changing the value of the specified stream rotor and/or the armature in the motor to provide improved starting torque and efficiency of the engine at high speed.

[0008] According to another variant of the present invention, the proposed device and how changes in the magnitude of the magnetic flux of the rotor and/or the armature in the generator and/or alternator to control the output voltage regardless of the frequency of rotation. Most of the known alternators is not possible to control the rotational speed, for example in the automotive generators that must be operated with a rotational speed proportional to the engine speed, and wind generators, which depends on wind speed. The change in the value of the magnetic flux of the rotor and/or the anchor provides the ability to control the output voltage independently of the rotation frequency, eliminating thus the need for the use of the inverter or an isolated coil excitation.

[0009] According to another variant of the present invention, the proposed device and how changes in the magnetic field of the motor or generator by rotating a shortened cylindrical permanent magnets to align their relative position to the fixed shortened permanent magnets or their deviation from the aligned position.

[0010] According to another variant of the present invention, the proposed device and how changes in the magnetic field of the motor or generator by turning the magnetic shunt liners, interacting with a fixed permanent magnet.

[0011] According to another variant of the present invention, the proposed device and how to change the magnetic field of the motor is made with the possibility of its use as an induction motor to provide a weak magnetic field to start the engine in asynchronous mode and to provide a strong magnetic field for efficient operation in synchronous mode.

Brief description of drawings

[0012] the Above-described variants and other variants of the present invention, its features and advantages will be more apparent from the description below with reference Naharai.

[0013] In Fig.1A shows a side view of the reconfigurable electric motor according to the present invention.

[0014] In Fig.1B shows a side view of the reconfigurable electric motor according to the present invention.

[0015] In Fig.2 shows a section of reconfigurable electric motor on the line 2-2 (Fig.1A) according to the present invention.

[0016] In Fig.3 shows a perspective view of a permanent two-pole cylindrical magnet according to the present invention.

[0017] In Fig.4 shows a perspective view of the four-pole cylindrical permanent magnet according to the present invention.

[0018] In Fig.5A, according to the present invention, shown is a side view of the rotor with adjustable permanent magnets having radially aligned structure.

[0019] In Fig.5B, according to the present invention, shown is a side view of the rotor with adjustable permanent magnets having radially aligned structure.

[0020] In Fig.6A, according to the present invention, shown is a side view of the rotor, which is radially aligned with the design, and two-pole permanent magnets which aligned to create the maximum (or strong) magnetic field.

In Fig.6B, according to the present invention, shown is a side view of the rotor, which is radially aligned with the design, and continuous two-pole m is gnity which aligned to create a magnetic field of medium strength.

[0022] In Fig.6C, according to the present invention, shown is a side view of the rotor, which is radially aligned with the design, and two-pole permanent magnets which aligned to create a weak magnetic field.

[0023] In Fig.7A shows a strong magnetic field that corresponds to the design according to Fig.6A.

[0024] In Fig.7B shows a weak magnetic field that corresponds to the design according to Fig.6S.

[0025] In Fig.8, according to the present invention, shown is a side view of the rotor with adjustable permanent magnets, with the design of the compacting magnetic flux.

[0026] In Fig.9, according to the present invention, shown is a side view of the rotor with adjustable permanent magnets, with the design of the compacting magnetic flux.

[0027] In Fig.10A, according to the present invention, shown is a side view of the rotor, which is designed to provide compression of the magnetic flux, and a bipolar permanent magnets which aligned to create the maximum (or strong) magnetic field.

[0028] In Fig.10B, according to the present invention, shown is a side view of the rotor, which is designed to provide compression of the magnetic flux, and a bipolar permanent magnets which aligned to create a magnetic field of medium strength.

[0029] In Fig.10C, according to the present invention, dormancy is Zan side view of the rotor, which has the design of the compacting magnetic flux, and a bipolar permanent magnets which aligned to create a weak magnetic field.

[0030] In Fig.11A shows a strong magnetic field that corresponds to the design according to Fig.10A.

[0031] In Fig.11 shows a weak magnetic field that corresponds to the design according to Fig.10S.

[0032] In Fig.12, according to the present invention, shown is a side view of a rotor having radially aligned structure and containing a pair of double-pole permanent cylindrical magnets.

[0033] In Fig.13, according to the present invention, shown is a side view of the rotor with the design of the compacting magnetic flux and contains a pair of double-pole permanent cylindrical magnets.

[0034] In Fig.14, according to the present invention, shown is a side view of a composite rotor having radially aligned structure and containing an internal adjustable permanent magnets and the outer fixed magnets and the inner magnets aligned to create a maximum magnetic flux.

[0035] In Fig.15A, according to the present invention, shown is a side view of a modular rotor having radially aligned structure containing internal adjustable permanent magnets and the outer fixed magnets, and that is configured to create the most what about the magnetic field.

[0036] In Fig.15V, according to the present invention, shown is a side view of a modular rotor having radially aligned structure and containing an internal adjustable permanent magnets and the outer fixed magnets, and configured to create a weak magnetic field.

[0037] In Fig.16, according to the present invention, shown is a side view of a modular rotor with internal adjustable permanent magnets and the outer fixed magnets and the design of the compacting magnetic flux.

[0038] In Fig.17A, in accordance with the present invention, shown is a side view of a modular rotor, which is designed to provide compression of the magnetic flux and internal adjustable permanent magnets and the outer fixed magnets which aligned to create a strong magnetic field.

[0039] In Fig.17B, according to the present invention, shown is a side view of the hybrid rotor, which is designed to provide compression of the magnetic flux, and an internal adjustable permanent magnets and the outer fixed magnets which aligned to create a weak magnetic field.

[0040] In Fig.18 shows a side view of an element for forming a multi-layer pole tip according to the present invention.

[0041] In Fig.18A shows the element 18A in Fig.18.

[0042] In Fig.19A shows sboc the first example of implementation of the regulating device for the double-pole permanent cylindrical magnets in the first position.

[0043] In Fig.19C shows a side view of a first example implementation of the regulating device for the double-pole permanent cylindrical magnets in the first position.

[0044] In Fig.20A shows a side view of a first example implementation of the regulating device for the double-pole permanent cylindrical magnets in the second position.

[0045] In Fig.20B shows a side view of a first example implementation of the regulating device for the double-pole permanent magnet of cylindrical shape in the second position.

[0046] In Fig.21A shows a side view of a second example implementation of the regulating device for the double-pole permanent cylindrical magnets in the first position.

[0047] In Fig.21B shows a side view of a second example implementation of the regulating device for the double-pole permanent cylindrical magnets in the first position.

[0048] In Fig.22A shows a side view of a second example implementation of the regulating device for the double-pole permanent cylindrical magnets in the second position.

[0049] In Fig.22B shows a side view of a second example implementation of the regulating device for the double-pole permanent cylindrical magnets in the second position.

[0050] In Fig.23A shows a side view of the third example of implementation of the regulating device is tva to install a two-pole cylindrical permanent magnets in the first position.

[0051] In Fig.23C shows a side view of a third example implementation of the regulating device for the double-pole permanent cylindrical magnets in the first position.

[0052] In Fig.24A shows a side view of a third example implementation of the regulating device for the double-pole permanent cylindrical magnets in the second position.

[0053] In Fig.24 shows a side view of a third example implementation of the regulating device for the double-pole permanent cylindrical magnets in the second position.

[0054] In Fig.25A, in accordance with the present invention, showing another example of the implementation of cog-device for regulating the provisions of the internal bipolar permanent magnets precast rotor having radially aligned structure.

[0055] In Fig.25V, according to the present invention, showing another example of the implementation of cog-device for regulating the provisions of the bipolar inner cylindrical permanent magnets precast rotor with the design of the compacting magnetic flux.

[0056] In Fig.26A shows a side view of the system bias (bias) for upravleniya the provisions of the magnets of the motor according to the present invention.

[0057] In Fig.26C shows a side view of the system offset for control of position magnets jet is in accordance with the present invention.

[0058] In Fig.27A shows a side view of the system offset for upravleniya the provisions of the magnet generator according to the present invention.

[0059] In Fig.27 shows a side view of the system displacement to control the positions of the magnets of the generator according to the present invention.

[0060] In Fig.28A, according to the present invention, shown is a side view of the rotor with adjustable permanent magnets containing rotary shortened cylindrical magnets and fixed coaxially shortened cylindrical magnets, and the displacement system to control the positions of the magnets.

[0061] In Fig.28V, according to the present invention, showing the front section of the rotor with adjustable permanent magnets on line 28V-28V (Fig.28A), which contains the rotary shortened cylindrical magnets and shortened coaxial fixed cylindrical magnets, and the displacement system to control the positions of the magnets.

[0062] In Fig.29A shows a side view of a rotor comprising a rotatable truncated cylindrical magnets and coaxially fixed truncated cylindrical magnets, and the displacement system to control the positions of the magnets.

[0063] In Fig.29B shows a front view of a rotor comprising a rotatable truncated cylindrical magnets and coaxially fixed truncated cylindrical magnets, and system offset for the UE is Alenia the provisions of the magnets.

[0064] In Fig.30A according to the present invention, shown is a side view of the rotor with adjustable permanent magnet containing a movable magnetic shunt liners that are aligned to provide strong magnetic fields.

[0065] In Fig.30V, according to the present invention, shown is a side view of the rotor with adjustable permanent magnet containing a movable magnetic shunt liners that are not aligned to provide a weak magnetic fields.

[0066] In Fig.31A, according to the present invention, shown is a side view of the rotor with adjustable permanent magnets, in which a strong magnetic field is obtained due to the aligned position of the movable magnetic shunt liners.

[0067] In Fig.V, according to the present invention, shown is a side view of the rotor with adjustable permanent magnets, in which a weak magnetic field obtained due to the fact that the movable magnetic shunt liners are not aligned.

[0068] In all the drawings the same elements are denoted by the same reference numbers.

The IMPLEMENTATION of the INVENTION

[0069] In the following description, considered the best technical implementation of the invention. The present description is not limiting in nature and was prepared to describe one or more preferred examples i.e. monitoring) reference and inventions. Scope of the invention should be determined on the basis of the claims.

[0070] In Fig.1A, according to the present invention, shown is a side view of reconfigurable electric motor 10, Fig.1 shows a side view of the electric motor 10, and Fig.2 shows a section of reconfigurable electric motor 10 along the line 2-2 (Fig.1A). The motor 10 includes a stator winding 14 and the rotor 12, located in the stator windings 14. The motor 10 is a brushless induction motor, AC, containing the magnetic circuit containing at least one permanent magnet 16 (see Fig.3-7) or movable magnetic shunt liners 80 (see Fig.310A-B) in the rotor 12, and to ensure the effective operation of the magnets 16 or the magnetic shunt inserts 80 can be adjusted to control the rotary magnetic field in a frequency range of rotation to ensure efficient operation.

[0071] In Fig.3 shows a perspective image of the double-pole permanent magnet 16 has a cylindrical shape according to the present invention, and Fig.4 shows a perspective view of a four-pole permanent magnet 16A according to the present invention. The poles of the magnets 16 and 16A are along the magnets shown above the dotted lines.

[0072] In Fig.5A, according to the present invention, showing the rotor 12A with regulation which has been created by the permanent magnets, having radially aligned structure, and Fig.5B shows a view of the rotor side. The rotor 12A contains magnets 16, the inner pole piece 18, the outer pole pieces 20 and the nonmagnetic spacer 22. Pole pieces made of magnetic conductive namagnichivaemost material, conductive magnetic field of the magnet 16 to generate a rotary magnetic field. The gasket 22 separates the inner pole piece 18 from the outer pole pieces 20, and the air gaps 23 divide the outer pole pieces 20. Typically, the magnets are cylindrical in shape and are parallel to the axis of the motor shaft 11, however, can be used magnets of other shapes.

[0073] In Fig.6A shows a side view of the rotor 12A with adjustable permanent magnets containing two-pole permanent magnets 16 that are aligned to create the maximum (or strong) magnetic field 24A (see Fig.7A), in Fig.6B shows a side view of the rotor 12A, containing two-pole permanent magnets 16 that are aligned to create a magnetic field of moderate force, and Fig.6C shows a side view of the rotor 12A, containing two-pole permanent magnets 16 that are aligned to create a weak magnetic field 24b (Fig.7B). In the motor alignment magnets, creating a strong magnetic field, provides high torque at slightly the x speeds, and alignment of the magnets, creating a weak magnetic field, provides efficient operation at high speeds. In the generator output voltage can be adjusted by adjusting the position of the magnets, providing, thus, a constant voltage generators with variable speed, for example in the automotive and wind generators.

[0074] In Fig.7A shows a strong magnetic field 24A corresponding to the design according to Fig.6A, and Fig.7B shows a weak magnetic field that corresponds to the design according to Fig.6S.

[0075] In Fig.8, according to the present invention, shown is a side view of the rotor 12b with adjustable permanent magnets, with the design of the compacting magnetic flux, and Fig.9 shows a view from the end of the rotor 12b. The rotor 12b contains magnets 16, the pole pieces 21 and the air gaps 23. Pole pieces made of magnetic conductive, but not magnetized material, conductive magnetic field of the magnet 16 to generate a rotary magnetic field. Pole pieces 21 are separated by air gaps 23.

[0076] In Fig.10A shows a side view of the rotor 12b with adjustable permanent magnets containing two-pole permanent magnets 16 that are aligned to create a strong magnetic field 24A' (Fig.11A), in Fig.10B shows sboc the rotor 12b, containing two-pole permanent magnets 16 that are aligned to create a magnetic field of moderate force, and Fig.10C shows a side view of the rotor 12b, containing two-pole permanent magnets 16 that are aligned to create a weak magnetic field 24b (Fig.11B). The alignment of the magnets in the motor, creating a strong magnetic field, provides high torque at low engine speeds, the alignment of the magnets, creating a weak magnetic field, provides efficient operation at high speeds. In the generator output voltage can be adjusted by adjusting the position of the magnets, providing, thus, a constant voltage generators with variable speed, for example in the automotive and wind generators.

[0077] In Fig.11A shows a strong magnetic field 24A', corresponding to the design according to Fig.10A, and Fig.11B shows a weak magnetic field that corresponds to the design according to Fig.10S.

[0078] In Fig.12, according to the present invention, shown is a side view of the rotor 12 containing a pair of radially aligned cylindrical two pole permanent magnets 16, and Fig.13, according to the present invention, shown is a side view of the rotor 12d containing a pair of cylindrical two pole permanent magnets 16 and having a design with the compression software is inanaga flow. According to the present invention, the number of magnets is not limited to one or two magnets, so, depending on specific case, can be used group containing any number of magnets. For example, instead of pairs of magnets according to Fig.12 and 13 can be used in groups of three, four, five or more magnets.

[0079] In Fig.14, according to the present invention, shown is a side view of the hybrid rotor 12A', containing radially aligned with adjustable internal permanent magnets 16 and secured external magnets 17. The combination of the adjustable internal permanent magnets 16 and secured external magnets 17 enables the creation of a new structure of the rotary magnetic field. In Fig.15A shows a side view of the hybrid rotor 12A' with adjustable internal permanent magnets and fixed external magnets arranged to generate a strong magnetic field, and Fig.15C shows a side view of the hybrid rotor 12A' with adjustable internal permanent magnets and fixed external magnets arranged to generate a weak magnetic field.

[0080] In Fig.16, according to the present invention, shown is a side view of the hybrid rotor 12b', containing adjustable internal permanent magnets 16 and secured external magnets 17 and with the design of the compacting mage is itogo flow. The combination of the adjustable internal permanent magnets 16 and secured external magnets 17 provides the ability to create additional structure of a rotary magnetic field. In Fig.17A shows a side view of the hybrid rotor 12b' with adjustable internal permanent magnets and fixed external magnets arranged to generate a strong magnetic field, and Fig.15C shows a side view of the hybrid rotor 12b' with adjustable internal permanent magnets and fixed external magnets arranged to generate a weak magnetic field.

[0081] In Fig.18 shows a side view of the element 30 forming the multi-layer pole tip, and Fig.18A shows the element 18A in Fig.18. Rotors are often made by layering multiple elements 30, each of which is preferably applied by means of electrical insulation. Rr is a radius of the element 30, Rm is the radius of circular cutouts 32 for cylindrical magnets 16, a Wag 34 represents the width of the air gaps. Similarly performed laminated pole pieces in some implementations of the present invention.

[0082] In Fig.19A shows a side view of a first example implementation of the control device 40A to install cylindrical two pole permanent magnets 16 in the first floor is laid, in Fig.19C shows a side view of the regulating device 40A to install cylindrical two pole permanent magnets in the first position of Fig.20A shows a side view of the regulating device 40A to install cylindrical two pole permanent magnets 16 in the second position, and Fig.20 shows a side view of the regulating device 40A to install cylindrical two pole permanent magnets in the second position. Device 40A includes a linear motor 42, preferably representing a stepper motor, the shaft 48, is pivoted in the radial direction by a linear motor 42, the ring 46, pivoted in the radial direction by means of the shaft 48, and the lever 44 (or levers), driven by the ring 46 and coupled with one of the six gear racks 52. The rack 52 interact with the gear 50 attached to the magnets 16 to rotate. When moving to the right shaft 48 pulls the rack 52 in the radial direction, and when moved to the left the shaft 48 pushes the rack 52 in the radial direction, thus rotating magnets with gears 50, directly interacting with the rack 52, while the rest of the magnets 16 is connected with a drive through the gear racks located between adjacent gears 50.

[0083] In Fig.21A showing the N. side view of a second example implementation of the regulating device 40b to install cylindrical two pole permanent magnets 16 in the first position, in Fig.21B shows a side view of the regulating device 40b to install cylindrical two pole permanent magnets in the first position of Fig.22A shows a side view of the regulating device 40b to install cylindrical two pole permanent magnets 16 in the second position, and Fig.22B shows a side view of the regulating device 40b to install cylindrical two pole permanent magnets in the second position. Device 40A includes a linear motor 42, preferably representing a stepper motor, the shaft 48, is pivoted in axial direction by a linear motor 42, the ring 46, pivoted in axial direction by means of the shaft 48, curved elbow 45, driven by the ring 46 and is connected to one of the six gear racks 52. Bending a bent knee 45 may be, for example, 90 degrees. When moving the ring 46 to the right to release the bent knee 45, it becomes less flexed position and pulls the rack 52 in the radial direction. When moving the ring 46 to the left for application of force to the curved elbow 45, it goes in the straightened condition and pushes the rack 52 in the radial direction. The rack 52 interact with the gear 50 attached to the magnets 16 to rotate. Thus, turning parts, all specifications the linear motor to the right draws in the radial direction of the rack 52, and the turning linear motor to the left pushes the rack 52 in the radial direction, thereby enabling the rotation of the magnets 16 with gears 50, directly interacting with the rack 52, while the rest of the magnets 16 is connected to the drive via toothed racks 52, located between adjacent gears 50.

[0084] In Fig.23A shows a side view of a third example implementation of a control device 40 for mounting the cylindrical two pole permanent magnets in the first position of Fig.23C shows a side view of a third example implementation of a control device 40 for mounting the cylindrical two pole permanent magnets in the first position of Fig.24A shows a side view of a third example implementation of a control device 40 for mounting the cylindrical two pole permanent magnets in the second position, and Fig.24 shows a side view of the third example of implementation of the regulatory arrangements for the installation of the cylindrical two pole permanent magnets in the second position. The device 40C includes a linear motor 42, preferably representing a stepper motor, the shaft 48, is pivoted in axial direction by a linear motor 42, the first piston 47, which is connected with the shaft 48, and the second piston 49 having liquid communication with the first piston 47 and soy is inanny with one of the six gear racks 52. When moving the piston 47 to the right, the second piston 49 is moved in the radial direction, and the toothed rack 52 is drawn 52 in the radial direction. When moving the ring 46 to the left, the piston 47 does move to the left, and the piston 49 makes a move in the radial direction and pushes in the corresponding direction of the rack 52. The rack 52 interact with the gear 50 attached to the magnets 16 to rotate. Thus, the rotation of the linear motor 42 to the right pulls the rack 52 in the radial direction, the rotation of the linear motor 42 to the left pushes the rack 52 in the radial direction, thereby enabling the rotation of the magnets 16 with gears 50, directly interacting with the rack 52, while the rest of the magnets 16 is connected with a drive through the gear racks located between adjacent gears 50.

[0085] In Fig.25A, in accordance with the present invention, showing additional cog device for regulation of the provisions of the cylindrical two-pole interior permanent magnets 16 hybrid adjustable constant internal magnet and the fixed magnetic rotor having radially aligned design. At the end of each of the magnets 16 attached a small gear 50. A large Central gear 51 communicates what each of the small magnetic gear 50 and causes each of the magnets 16 saves approximately the same position in the alignment (may be some clearance between the gears due to the proximity of the magnets to align them), and can be used for adjusting the position for alignment of the magnets 16 from strong to weak fields.

[0086] In Fig.25V, according to the present invention, shown cog device for regulation of the provisions of the cylindrical two-pole interior permanent magnet hybrid adjustable inner permanent magnet and fixed external magnetic rotor with the design of the compacting magnetic flux. Small Central gear 51A communicates alternately with one of the small magnetic gear 50 that communicates with each of the adjacent gear 50, and causes each of the magnets 16 saves approximately the same position in the alignment (may be some clearance between the gears due to the proximity of the magnets to align them), can be used for adjusting the position of the magnets 16 to align them from strong to weak fields.

[0087] In Fig.26A, according to the present invention, shown is a side view of the system displacement to control the position of the magnets of the motor, and Fig.26 shows a side view is the system displacement to control the position of the magnets of the motor through wires 70. The control unit 64 converts the single-phase DC voltage source 68 in a three-phase trapezoidal or sinusoidal signal for three-phase motor.

The coil 60 of excitation used to create an electromagnetic field proportional to the engine load. Coil 60 excitation has a very low resistance and does not reduce the input voltage of the motor or does not increase significantly the resistance. Field affects the disk 62 and pushes it to the left relative to the bent knee 45 to rotate the magnets 16.

[0088] the Increase in the engine load leads to a proportional increase in the strength of the electromagnetic field, and the calibration load is only slightly less than the load required to rotate the magnets 16, and the circuit 66 is reset is a shunt controller, providing a small current, which, together with the electromagnetic force of the armature 62 offset provides a final effort to control the rotation of the magnets 16, which controls the magnetic field of the rotor. The controller 64 preferably is a controller inverter that converts single-phase DC signal in-phase wave exciting the stator field to rotate the rotor.

[0089] the Actuator displacement includes a coil 60 with ultra-low resistance and anchor 52, creating a condition is Leah, proportional to the current load, affecting the inalienable property of the magnets 16 for placing in position with a weak magnetic field. Scheme 66 reset is a trigger device with little effort, fueled by the over-current motor which can rotate the magnets 16 to regulate the magnetic field in the weak or strong Poljane at low cost electric power.

[0090] In Fig.27A, according to the present invention, shown is a side view of the system displacement to control the positions of the magnets 16 of the generator, and Fig.27B shows the end view of the system displacement to control the positions of the magnets 16 of the generator. The generator can be set in motion to create the specified phase or any phase power as a generator or alternator.

[0091] the Output signal power and phase of the generator or alternator is usually omitted through the matrix 72 of the six diodes that convert polyphase currents in single-phase direct current. The output signal of one of the output lines of the DC voltage sent to the coil 60 offset with low resistance and the armature 62, which creates a force opposing the spontaneous rotation of the magnets 16 in position with a weak magnetic field. Similarly, in the design of the engine according to Fig.26A and 26C, management reset provides sky is Lishou over current in coil 60 and the anchor 62 to overcome the magnetic force to control the position of rotation of the magnets and magnetic fields. The controller circuit reset is an electronic switch transistor type, which can provide a variable amount of power that you want to add to the force of the bias coil 60 and the armature 62.

[0092] In Fig.28A, according to the present invention, shown is a side view of the rotor 12 with adjustable permanent magnets containing rotary shortened cylindrical magnets 16C, aligned relative to each other and coaxially fixed truncated cylindrical magnets 16d, and a control system to control the positions of the magnets, and Fig.28C shows a cross-section of the rotor 12 with adjustable permanent magnets on line 28V-28V (Fig.28A). In Fig.29A shows a second side view of the rotor 12, containing a rotary shortened cylindrical magnets 16, which is not coaxially aligned with fixed truncated cylindrical magnets, and Fig.29 shows the rotor 12 in section along the line 29B-29B (Fig.29A). If you align the magnets 16C and 16d (i.e. aligned pole magnets 16C and 16d), is the creation of a strong magnetic field, while turning magnets 16C 180 degrees and unaligned position of the poles of the magnets 16C and 16d, is creating a weak magnetic field.

[0093] the Regulating device comprises a wheel gear 52 attached to the magnets 16C, rack and pinion 52, lane is medusine in the radial direction and interacting with leading gear 50 and the second leading gears 54, and a rack and pinion gear 56 moving in the axial direction and communicates with the second leading gears 54. A rack and pinion gear 56 moving in the axial direction, can be powered electrically using a solenoid and hydraulic means (see Fig.23A-24) via a linear motor, linear stepper motor, levers, or any other means to move the rack gear 56 in the axial direction. A rack and pinion gear 56 is connected with the second leading gear 54 with the possibility of converting the movement of the gear 56 in the axial direction in the rotation of the second leading gear 54. The second wheel gear 54 is connected to a rack and pinion gear 52 with the ability to convert rotation of the gear 54 to move the rack gear 52 in the radial direction. A rack and pinion gear 52 is connected with the first lead gear 50 with the ability to convert radial movement rack and pinion gear 52 in the rotation of the first lead gear 50 to rotate the magnets 16 to align the magnets 16 and 16d and deviations from this aligned position for selective creation of strong and weak magnetic fields.

[0094] In Fig.30A according to the present invention, shown is a side view of the rotor 12f with adjustable permanent magnets containing movable magnetic the shunt pads 80, fixed external permanent magnets 17 and fixed internal permanent magnets e, aligned to ensure a strong magnetic field, and Fig.30V, according to the present invention, shown is a side view of the rotor 12f with adjustable permanent magnet containing a movable magnetic shunt liners, which are aligned and not aligned with the fixed permanent magnets 17 and e to create a weak magnetic field. Movable magnetic shunt liners 80 preferably are cylindrical in shape, made of conductive namagnichivaemost material and contain bus 80A, passing through the center of the liners 80 and separating these liners into two parts.

Bus 80A is made of a nonmagnetic conductive material, preferably of non-magnetic non-ferrous metal. Movable magnetic shunt inserts 80 can be moved (or adjusted) using any of the regulatory systems designed to move the magnets according to the description of this application, and any motor or generator that uses movable shunt liners to change the magnetic field from the strong to the weak, made within the scope of the present invention.

[0095] In Fig.31A shows a side view of the rotor 12f with adjustable permanent magnets and a strong magnetic field 24A", recip is authorized when the alignment of the movable magnetic shunt pads and magnets e, a in Fig.V shows a side view of the rotor 12f with adjustable permanent magnets and a weak magnetic field 24b", obtained due to the fact that the movable magnetic shunt liners are not aligned with magnets e. Specialists in this field it is obvious that there are other possible examples of implementation of the rotors containing conductive paths with movable magnetic shunt liners, for example containing a cylindrical housing on the outside of the magnets with the changing angles of the location of conductive and magnetoliposomes parts, and any rotor in the motor or generator, the movable magnetic shunt liners which interact with the magnets to selectively create a strong or weak magnetic fields, performed within the scope of the claims of the present invention.

Industrial applicability

[0096] the Present invention is industrially applicable in the field of electric motors.

The scope of legal protection of inventions

Although the present invention is described through specific examples of implementation and their applications, specialists in the art can be made of various modifications and changes of the present invention without going beyond the scope of this invention defined in the attached claims.

1. A rotor for use in an electric motor or a gene is atore, converts electrical energy into mechanical energy or Vice versa, containing:
fixed pole pieces made of magnetic conductive namagnichivaemost material; and
the conductive loop containing the pole pieces and the movable element configured to move to selectively create a strong rotary magnetic field and weak rotary magnetic field.

2. The rotor under item 1, in which the movable element comprises at least one movable magnetic shunt liner containing magnitoprovodami material.

3. The rotor under item 1, in which the pole pieces are located radially design.

4. The rotor under item 1, in which the pole pieces are designed to ensure compression of the magnetic flux.

5. The rotor under item 1, in which the movable element includes at least one movable permanent magnet having a magnetic interaction with the pole pieces and arranged to move for regulating a rotary magnetic field from strong to weak.

6. The rotor on p. 5, additionally containing a magnetic gear attached to the ends of each of the rotatable permanent magnets for adjusting the position of each of the rotatable permanent magnets.

7. The rotor on p. 6, in which the moving gear ray and interact with the corresponding magnetic gears for adjusting the position of each of the rotatable permanent magnets.

8. The rotor under item 7, in which at least one of the gear racks connected straight lever configured to actuate to provide radial movement of the toothed rail and adjusting the position of each of the rotatable permanent magnets.

9. The rotor under item 8, in which the straight lever configured to actuate via a linear actuator for providing radial movement of the toothed rail and adjusting the position of each of the rotatable permanent magnets.

10. The rotor under item 9, in which the linear actuator is a stepper motor.

11. The rotor under item 7, in which at least one of the gear racks connected two shoulders lever configured to actuate to provide radial movement of the toothed rail and adjusting the position of each of the rotatable permanent magnets.

12. The rotor on p. 11, in which the upper end of the two shoulders of the lever is located in front of the slide, the axial displacement of the two shoulders to the lever causes movement of two shoulders of the lever for adjusting the position of each of the rotatable permanent magnets.

13. The rotor under item 12, in which two shoulders lever configured to actuate via a linear actuator for providing radial movement of the toothed rack for regulation is ogene each of the rotatable permanent magnets.

14. The rotor under item 7, which is made of a hydraulic piston with the possibility of actuation for radial movement of the toothed rails for adjusting the position of each of the rotatable permanent magnets.

15. The rotor on p. 14, in which the hydraulic piston has a fluid communication with the second hydraulic piston, the actuation of which causes movement of a hydraulic piston and gear racks for adjusting the position of each of the rotatable permanent magnets.

16. The rotor under item 15, in which the second hydraulic piston is arranged to actuate via a linear actuator.

17. The rotor on p. 6, in which one Central gear interacts with each of the magnetic gear to maintain approximately the same position of each of the rotatable permanent magnets.

18. The rotor under item 1, additionally containing a fixed external rotor magnets attached to the outer part of the rotor.

19. The motor containing:
the stator electrical windings;
the rotating magnetic field generated by electric current flowing through the stator windings;
a rotor located in the stator windings and containing fixed pole pieces made of magnetic conductive namagnichivaemost material, and m is Nisha least one internal permanent rotor magnet, having a magnetic interaction with the pole pieces and can be rotated to regulate the rotary magnetic field from strong to weak.

20. Generator containing:
the stator electrical windings;
tilt rotor located in the stator windings and containing fixed pole pieces made of magnetic conductive namagnichivaemost material, at least one fixed magnet and at least one movable magnetic shunt liner containing magnitoprovodami material that interacts with at least one fixed magnet and pole pieces, and the specified at least one movable magnetic shunt insert is made can be rotated to regulate the rotary magnetic field from strong to weak.



 

Same patents:

Electric machine // 2541356

FIELD: machine building.

SUBSTANCE: electric machine contains casing with laminated rotor core with slots for winding coils installation. In the cylinder cavity of the stator the rotor is installed with possibility of rotation, it includes shaft and inductor with external cylindrical surface containing alternating along the perimeter poles and permanent magnets fixed in slots of the inductor by the non-magnetic wedges. Between the shaft and inductor a bushing is installed, on it inductor is rigidly secured. End faces of the rotor are rigidly secured to the end face covers. The composite permanent magnets of similar height ate rigidly secured in ring clearances. Ring permanent magnets are rigidly secured above each other on walls of second and forth ring collars looking on the rotor axis of rotation. Electric machine casing is provided with shields.

EFFECT: increased service life of the electric machine, significant friction decreasing in bearings at increased and high rotational speed of the inductor.

3 cl, 2 dwg

FIELD: engines and pumps.

SUBSTANCE: multi-pole synchronous electric motor with excitation from permanent magnets comprises a stator with even number of poles 2p, on the poles there is a winding made of one coil per pole, a salient-pole rotor with even number of poles, permanent magnets with tangential magnetisation are located on the rotor radially between poles, the salient-pole rotor with tangential magnetisation of poles is made with number of poles equal to the number of poles on the stator, and equal pitch between poles, pole tips of identical poles on the stator differ in their width from width of poles of the opposite polarity.

EFFECT: simplified design.

1 dwg

FIELD: electricity.

SUBSTANCE: invention pertains to the field of electric engineering, in particular to eclectic motors with permanent magnets used, for example, for submerged electric drive without formation fluid lifting. The motor rotor comprises a key-slotted shaft, the core pack made of electric steel plates with alternating poles, and each of them is formed by two V-mounted prismatic permanent magnets with tangential magnetism faced to the pole by its one polarity. The magnets are placed in slots of the pack plates and do not touch each other. The number of magnets is twice bigger than the number of poles. At inner surface of poles of both polarities there are slots along the pole axis.

EFFECT: improvement of the motor output performance due to scattering of magnetic flow at maintained rotor strength.

5 cl, 5 dwg

Electrical machine // 2534225

FIELD: electricity.

SUBSTANCE: invention is related to electric engineering and may be used predominantly for electrical machine constructions, and namely for AC electronic motors and synchronous generator with excitation from permanent magnets. The suggested electrical machine comprises a stator with laminated slots, multiphase armature winding and rotor with slots where permanent magnets are placed thus forming a system with alternating poles, at that active length L of the rotor is selected equal to (2.8-3.1)τ, where τ is polar pitch of the rotor.

EFFECT: improvement of power and dynamic performance of the electrical machine due to increase efficiency of active material usage.

1 dwg

Synchronous machine // 2529182

FIELD: electricity.

SUBSTANCE: invention relates to the field of electrical engineering, in particular to synchronous machines with combined excitation. According to the given invention on the armature of the synchronous machine containing a multiphase armature winding and face laminated core with multiphase sub-excitating winding, the latter is combined with the armature winding on a part of active length of armature core and forms a part of active length of its coil. The magnetic circuit of the rotor with permanent magnets is made short, forming a free ring band on a part of active length of the armature core, where the additional ring-type magnetic circuit of claw type fixed on the rotor is installed. In a ring-type magnetic circuit in its internal ring hollow the stator-fastened magnetic circuit with a toroidal field coil is installed, which is connected to the machine control and regulation system. During the operation of the synchronous machine the sub-excitation link of claw type with the toroidal winding creates an additional regulated magnetic flux, the direction of which can be co-directional or opposite with the main flow of permanent magnets, that ensures the operation of the synchronous machine both in normal, and in abnormal modes of operations with a possibility of excitation field dampening.

EFFECT: expansion of the range of regulation of output voltage at simultaneous provisioning of possibility for excitation field dampening.

2 dwg

Inductor machine // 2524166

FIELD: electricity.

SUBSTANCE: inductor machine includes stator installed in magnetically soft housing (1) and made in the form of two laminated packs (2) and (3) from magnetically soft material with teeth (4) on their inner surface, working winding (5), the turns of which are located in slots between teeth (4) restricted as to height with backs (6) of those packs, two rotor packs (7) and (8), which are installed inside bores of stator packs (2) and (3), and excitation winding (9) installed between rotor packs (7) and (8). According to the invention, on outer surface of each stator pack (2) and (3) a provision is made for external teeth (10) oriented along the machine axis, the number of which is equal to the number of stator teeth on its inner surface, external teeth (10) are located above sections of backs (6) of each stator pack, sections of backs (6) under external teeth (10) are located between internal teeth of stator packs (2) and (3), and on inner side of housing (1) there are slots for arrangement of external teeth (10) of stator packs (2) and (3).

EFFECT: reduction of losses in housings of inductor machines and improvement of their efficiency, and reduction of time for transient processes.

2 cl, 4 dwg

Electric machine // 2523029

FIELD: electricity.

SUBSTANCE: electric machine includes case with end screens, housing a laminated stator core with slots where winding coils are located and fixated by wedges, with rotor positioned inside stator cavity and including inducer actuating poles, permanent magnets, no-magnetic wedges and shaft, so that rotor length exceeds inducer length. Rotor end sections are made in the form of cylindrical bushings out of non-magnetic material, flush-mounted on external surface of inducer, rotor bearing unit allows for static gas and dynamic gas support, and for that purpose external rotor features cylindrical surface and is positioned inside cylindrical cavity of the bushing fixated in the stator cavity with gas supply for stator surface cooling, while case cavity has cooling gas supply and drain, and for that purpose internal surface of the case features longitudinal ducts joining radial ventilation ducts made between stator core stacks. According to invention, stator can be vented separately by at least two pipes in the case for cooling gas supply/drain to/from the case volume occupied by the stator, the bushing has longitudinal lugs matching stator core slots in number, positions and cross-section and fit into the slots, slot vent gap is left between lug surface and slot wedge, lengthwise holes are made in longitudinal lugs of the bushing and connect to radial feed orifices opened into internal cavity of the bushing, cylindrical bushings out of isolating material are installed in the case cavity coaxially to stator core cavity and attached by their ends to the ends of outmost stator core stacks, external surface on the ends facing end screens feature o-ring pairs, and end screen junction with the case is sealed. Cylindrical bushings serve as external cartridges of radial gas-dynamic leaf bearings, and rotor end sections serve as trunnions of the bearings, in addition the electric machine features at least one axial gas-dynamic leaf bearing, and orifices are made in end screens, with orifice inlets connected to lubricating gas source and outputs joining annular slot between o-ring pairs, which in its turn joins longitudinal through holes of the cylindrical bushing. Besides, a screen features pipe connected to separate source of cooling gas and joining permanent magnet cooling ducts formed by slot bottom section and permanent magnet surface facing them, via end sections of inducer, and at the opposite case end the ducts are connected to process gap of axial gas-dynamic leaf bearing which in its turn is connected to gas collector.

EFFECT: efficient cooling of stator winding and core, reduced weight and dimensions, improved service life of electric machines, minimum rotor bend, efficient cooling of permanent magnets, extended rotor stability range due to damping by radial gas-dynamic leaf bearings, prevention of rotor jamming at high circular velocities in vicinity of gas-dynamic leaf bearings.

4 cl, 3 dwg

FIELD: electricity.

SUBSTANCE: invention is related to the area of electric engineering and namely to electric machines with permanent-magnet excitation, and it may be used in electric machine engineering. At that the invention ensures improved rotation uniformity, enhanced energy indicators, reduction of noise and vibration level for the magnetoelectric machine. In the suggested magnetoelectric machine including armature with winding laid in z slots and non-salient pole rotor with permanent magnets the armature slots are bevelled at the angle α corresponding to an integer number of tooth harmonic periods.

EFFECT: decreasing reactive moment pulsation for the magnetoelectric machine.

Borehole motor // 2516472

FIELD: engines and pumps.

SUBSTANCE: invention relates to electrical engineering and machine building, particularly, to borehole motors to lift bed fluid. Proposed borehole motor comprises stator with toothed magnetic core accommodating the rotor. Stator teeth internal surface has grooves regularly arranged in circle in axial direction, the number making three, or being multiple of three.

EFFECT: lower reactionary torque, hence, vibration, better starting properties.

2 cl, 8 dwg, 2 tbl

FIELD: electricity.

SUBSTANCE: present invention relates to electrical engineering, particularly electrical machines, and peculiarities of making permanent-magnet synchronous motors for a drainage pump. The disclosed synchronous motor comprises a permanent-magnet rotor for rotating the a rotor wheel, a pump housing on which the permanent-magnet rotor rests, a stator core and a stator coil. According to the invention, the stator coil has a winding made of aluminium enamelled wire and is provided with a part for connection by welding the lead wire of said winding with a contact for connecting with the lead wire; the winding is hermetically insulated in a protective housing; the outer surface of the part for connection by welding of the lead wire of the winding made of aluminium enamelled wire is tin-plated by soldering or tin electroplating, wherein the part for connection by welding of the lead wire, tin-plated by soldering or tin electroplating, is welded to the contact for connection with the lead wire; the outer surface of the winding made of aluminium enamelled wire is first coated with insulating paper tape and then hermetically insulated by said protective housing.

EFFECT: enabling prolonged operation of motors in an air medium containing oxygen without oxidation of the aluminium lead wire while simplifying the process of welding said lead wire and simplifying the process of welding to a contact terminal; protecting aluminium enamelled wire from damage under the action of high temperature during hermetic insulation of the winding in the protective housing, formed by filling with plastic or epoxy resin.

8 cl, 4 dwg

FIELD: electricity.

SUBSTANCE: rotor magnetic system contains the magnetic conductor fixed on a shaft from magnetosoft material without gaps along external and internal diameters with a hole for mounting of a permanent magnet. The magnet is formed by separate elements of four in the case under consideration (by number of poles) hollow cylindrical permanent magnets. The hole for magnet is designed without gaps, has a wavy form, symmetric with reference to the shaft axis, with identical distances between tops of the wave edges located near the rotor boring and located from it at identical distance. The elements of permanent magnets placed in the hole have identical magnetic polarity between each couple of neighbouring tops of the wavy hole. This polarity changes to opposite at each passing of a top.

EFFECT: increase of magnetic flux in the air gap of the electrical machine.

3 dwg

FIELD: electricity.

SUBSTANCE: invention is attributed to the field of electric engineering and can be used in rotating electrical machines. The rotating electrical machine is equipped with the rotor shaft (10), the rotor core (20) and a group (30) of permanent magnets. The rotor core (20) includes a group (21) of barriers (211) for a flow, which are placed apart. At least one barrier (211) for a flow includes at least one bridge (212) connecting the inner edge (211a) and outer edge (211b) of the above barriers (211) for a flow. Permanent magnets (31) are placed in the rotor core (20) between barriers (211) for a flow when viewed in cross-sectional plane.

EFFECT: improved assessment accuracy for the rotor angular position by independent identification or control without sensors.

20 cl, 14 dwg

Electric machine // 2542327

FIELD: electricity.

SUBSTANCE: invention pertains to electrical engineering and can be used in high voltage electrical machines. The electric machine is made constructively as specified in the patent claim.

EFFECT: effective cooling of the stator winding and core, reduced weight and dimensions and increased service life of electrical machines, including the machines operating at increased and high rates of rotation.

8 cl, 3 dwg

FIELD: electricity.

SUBSTANCE: invention is referred to reactive synchronous machines and may be used as a synchronous electric generator or synchronous electric motor. The synchronous electric motor comprises the stator with magnet core and stator electric windings, end shields and rotor made cylindrical and assembled of ferromagnetic sheets with stacking along the machine shaft axis fixed at the bases of the cylindrical active part to the shaft flanges. Between the rotor ferromagnetic sheets there are uniform air gaps. The rotor of synchronous electrical machine may be performed of material with anisotropic magnetic conductivity in the machine diametrical plane. Thickness of sheets and distance between them may be different to ensure the required concentration of the magnetic field lines.

EFFECT: simplifying rotor design of the synchronous electrical machine, ensuring sinusoidal shape of magnetising force distribution curve along the working gap and ad result improving efficiency of its operation as well as energy performance.

4 cl, 6 dwg

Electric machine // 2541356

FIELD: machine building.

SUBSTANCE: electric machine contains casing with laminated rotor core with slots for winding coils installation. In the cylinder cavity of the stator the rotor is installed with possibility of rotation, it includes shaft and inductor with external cylindrical surface containing alternating along the perimeter poles and permanent magnets fixed in slots of the inductor by the non-magnetic wedges. Between the shaft and inductor a bushing is installed, on it inductor is rigidly secured. End faces of the rotor are rigidly secured to the end face covers. The composite permanent magnets of similar height ate rigidly secured in ring clearances. Ring permanent magnets are rigidly secured above each other on walls of second and forth ring collars looking on the rotor axis of rotation. Electric machine casing is provided with shields.

EFFECT: increased service life of the electric machine, significant friction decreasing in bearings at increased and high rotational speed of the inductor.

3 cl, 2 dwg

FIELD: machine building.

SUBSTANCE: electric machine rotor comprises several segments. The segments include permanent magnets. A partition plate is set between at least two segments. The partition plate is provided with radial partitions and serves as a pressing plate and the partitions serve as a fan and spacers between the segments.

EFFECT: providing for better cooling of a rotor with keeping its simple design.

5 cl, 3 dwg

FIELD: electricity.

SUBSTANCE: invention refers to the sphere of electric engineering and may be used to make a generator stator. The through pin (4) for magnetic stator core (1) of the generator is inserted into an opening (6) in plates (3) of the stator core used for tightening of the core components. The through pin (4) consists of at least two longitudinal members (9, 10) interconnected by at least one connecting element (11). Besides, the assembly method is described for the through pin (4) intended for plates (3) of the generator stator core.

EFFECT: reducing labour intensity of stator manufacture due to potential replacement of through pins located below the foundation bed level, and this replacement does not require special tools or lifting of the frame thus making such replacement easy and cost-effective.

12 cl, 7 dwg

FIELD: electricity.

SUBSTANCE: invention pertains to the field of electric engineering, and namely to salient-pole asynchronous motors, and may be used in electric drive used for different engineering and household applications. The asynchronous electric motor comprises the stator core including polar tips and yoke assembled of electric steel sheets, a cage rotor mounted in the stator bore, the stator winding consisting of coils installed at the poles; the body is made of non-magnet material with the rigidly fixed stator core consisting of one pair of poles and yoke where resonant winding is mounted with a tuning capacitor, at that the polar tips and yoke are made as one piece.

EFFECT: improvement of the motor efficiency factor and significant reduction of consumed power.

2 dwg

FIELD: electricity.

SUBSTANCE: invention relates to a rotating electrical machine, namely to an asynchronous machine of double-way feed, which is intended for operation in the power range of 20 MVA to 500 MVA and higher. The electrical machine can be rotated about an axis of a rotor concentrically enveloped by a stator; the rotor has rotor housing (14) made of metal sheets that are located layer-by-layer and pressed to each other in axial direction into a package by means of clamping plate (19); the above rotor housing is divided in radial direction into internal mechanical zone (14b) and external electrical zone (14a), and rotor winding (18) is installed in electrical zone (14a) of the above rotor housing. Axial stress of the rotor housing of such a machine, which is made of metal sheets, is optimised by the fact that clamping plate (19) in accordance with radial separation of rotor housing (14) made of metal sheets is divided radially into a separate internal clamping plate and a separate external clamping plate.

EFFECT: improvement of the design.

9 cl, 3 dwg

FIELD: electricity.

SUBSTANCE: invention relates to electric engineering, in particular to electric machines with salient poles, including generators and motors. The suggested electric machine with salient poles includes rotating field assembly having curved outside diameter and including one and more rotor poles, windings and rods supporting coil, and winding section projecting beyond the rotor poles, and at least one cap of end face turn connected with rotating field assembly and surrounding coil supporting rods and windings section projecting beyond the rotor poles such that to reduce ventilation losses. At that this cap of the end face turn is made with the outside diameter mainly equal or similar to outside diameter of the specified rotating field assembly, and the rotating field assembly includes the open air cavity between the rotor poles and winding supports.

EFFECT: efficiency increasing of the electric machines with salient poles by means of the ventilation losses reduction.

10 cl, 8 dwg

FIELD: electrical engineering; mechanical design of commutatorless magnetoelectric machines.

SUBSTANCE: rotor magnetic system has more than two magnetically permeable steel laminations with pole horns formed by prismatic tangentially magnetized N-S permanent magnets placed inside laminated stack; inner and outer diameters of laminations are uninterrupted and rectangular prismatic magnets are installed inside them so that distance over outer arc between external planes of two adjacent magnets of unlike-polarity poles is shorter than that over internal arc between same planes; magnets do not contact one another and have at least one projection on inner diameter for coupling with rotor shaft.

EFFECT: enhanced manufacturability.

3 cl, 2 dwg

Up!