Reconfigurable synchronous induction motor

FIELD: engines and pumps.

SUBSTANCE: invention relates to electric motors, in particular to mobile permanent magnets and/or to non-magnetic conductive shunting parts in a rotor for motor conversion from asynchronous induction motor at starting into synchronous motor. Reconfigurable electric motor contains a rotor with rotary permanent magnets or non-magnetic conductive shunting parts. Magnets and/or the shunting parts have the first position creating weak magnetic field ensuring the motor run in asynchronous mode at its starting, and the second position creating strong magnetic field ensuring an efficient operation in a synchronous mode. The motor also contains a squirrel-cage winding of rotor. At approaching or achieving by the motor of synchronous rotational speed the permanent magnets and/or the shunting parts rotate for creation of strong magnetic field with ensuring of high performance in the synchronous mode.

EFFECT: increase of overall performance.

20 cl, 52 dwg

 

The present application claims the priority application for U.S. patent No. 12/610,184, filed October 30, 2009, and the priority application for U.S. patent No. 12/905,906, filed October 15, 2009, the contents of which are incorporated into this description by reference.

The technical FIELD

The present invention relates to electric motors and, in particular, to a movable permanent magnets and/or non-magnetic conductive shunt parts in the rotor for reconfiguration of the engine from an asynchronous induction motor when running in synchronous motor to ensure efficient operation.

The LEVEL of TECHNOLOGY

The preferred form of induction motors are brushless AC motors. The rotors of induction motors contain a body (or a short-circuited winding like a "squirrel cage"), rotating in the stator. The body contains the rods passing in the axial direction and arranged at angular intervals on the outer periphery of the rotor. When applying an alternating current to the stator, it creates a rotating magnetic field that inductively blood-creeping currents in the rods. Then the current induced in the rods, interacts with the same stator magnetic field to create torque and ensuring thus the rotation of the engine.

A steering current in the rotor bars clean the Dimo absence of their simultaneous displacement (or rotation) of the rotating stator magnetic field, because electromagnetic induction requires relative movement between the magnetic field and located a guide. In the end, the rotor must move relative to the rotating stator magnetic field for induction of current in the rods and thereby create a torque, and induction motors as a result are induction motors.

Unfortunately, low-power induction motors do not have a high efficiency, the loss of her occurs at reduced loads, because at low loads, the amount consumed by the stator power constantly.

One of the ways to increase the efficiency of the induction motor consists in adding to the rotor permanent magnets. Initially, the engine start is just like running a normal induction motor, however, when the engine reaches its operating speed of stator magnetic field interacts with the permanent magnets to move in synchronous mode. Unfortunately, the size of the permanent magnets is limited, since too large magnets prevent the starting of the engine. This restriction on size limits the advantage gained from the introduction of the permanent magnets.

DISCLOSURE of INVENTIONS

The present invention resolves to the review of the data above and other disadvantages by creating a reconfigurable electric motor, containing a rotor with a rotating permanent magnet or a non-magnetic conductive shunt parts. The magnets and/or shunt parts are in the first position, creating a weak magnetic field to ensure operation of the induction motor in asynchronous mode at startup, and the second position, creating a strong magnetic field to provide efficient operation in synchronous mode. The engine contains a squirrel-cage winding for an induction motor when running with permanent magnets and/or shunt parts, arranged to generate a weak magnetic field does not interfere with the launch. When approaching or reaching the motor synchronous speed, permanent magnets and/or shunt part rotates to create a strong magnetic field to provide a very efficient operation in synchronous mode. The position of the magnets and/or shunt parts can be adjusted by means of the centrifugal device, or viscous damping may delay the rotation of the magnets and/or shunt parts, or device with electric control can control the positions of the magnets and/or shunt part.

According to one variant of the present invention is proposed reconfigurable brushless AC motor that runs asynchronously in the mode with the subsequent transition to more efficient synchronous mode. The motor contains a stator receiving the alternating current signal and generating a rotating stator magnetic field and rotor interacting with the rotating stator magnetic field. The rotor contains the pivots of the design squirrel-cage winding for induction interaction with the rotating stator magnetic field with providing asynchronous mode to start the engine, and at least one rotatable permanent magnet to ensure efficient operation in synchronous mode. A permanent magnet is located in the rotor and magnetically interacts with the pole pieces. The permanent magnet is in the first position, resulting in the creation of a weak magnetic field to enable starting of induction motor, and a second position, resulting in the creation of a strong magnetic field for interaction with the rotating stator magnetic field, ensuring effective operation in the synchronous mode.

According to another variant of the present invention is provided with configurable synchronous-asynchronous motor with a magnetic circuit containing a rotary cylindrical magnets or one rotatable hollow cylindrical magnet. Permanent magnets can have a first position that creates a weak magnetic field to provide asynchronous operation mode, and the / establishment, which position, creating a strong magnetic field to provide operation in synchronous mode.

According to another variant of the present invention is provided with configurable synchronous-asynchronous motor with a magnetic circuit containing a rotatable nonmagnetic conductive shunt portion or one of the rotary hollow cylindrical non-magnetic conductive shunt parts. Nonmagnetic conductive shunt portion have a first position that prevents using a magnetic circuit to create a weak magnetic field, and a second position, slightly impeding through the magnetic circuit to create a strong magnetic field.

According to another variant of the present invention proposed a centrifugal clamping device that holds a permanent magnet in the position of a weak magnetic field at run-time and to achieve a speed sufficient to move in synchronous mode. Centrifugal clamping device, given by way of example, contains a spring that holds the pin that interacts with a rotating permanent magnet, and the cargo, overcoming the spring when the rotational speed sufficient to release the magnets.

According to another variant of the invention proposed a viscous damping material, for example silicone, turning parts, all specifications surrounding the main permanent magnets to prevent them from turning or located in the chamber, environmental blades attached to the rotating magnets to maintain a weak magnetic field in asynchronous start. After some time, the magnets make the turn with providing a strong magnetic field for efficient operation in synchronous mode.

According to another variant of the invention the proposed Electromechanical device for controlling the position of the magnets and/or non-magnetic conductive shunt parts. The management of the Electromechanical device may occur via processor to ensure optimum magnetic field for the current state of the motor. For example, due to the load on the engine of the motor reaches synchronous speed, and when the load increases there is a reduction of the engine speed, and the Electromechanical device can reduce the magnetic field to provide a transition or return of the engine in synchronous mode. Such Electromechanical devices typically can be used in large and/or expensive engines.

According to another variant of the invention the methods of regulation of the magnetic field in the motor and/or generator to ensure efficient operation in a wide range of speeds.

BRIEF DESCRIPTION of DRAWINGS

The above and other variants, is bennoti and advantages of the present invention will be more apparent from the following description, according to the attached drawings.

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

In Fig.1B shows the end view of reconfigurable electric motor.

In Fig.2 shows a section along the line 2-2 (Fig.1A) reconfigurable electric motor according to the present invention.

In Fig.2A shows a conventional two-pole permanent magnet according to the present invention.

In Fig.3 according to the present invention shows a section along the line 3-3 (Fig.2) reconfigurable electric motor with one pole of the permanent magnet in the rotor with radially aligned design.

In Fig.4 according to the present invention shows a section along the line 3-3 (Fig.2) reconfigurable electric motor with a single four-pole permanent magnet located in the rotor with radially aligned design.

In Fig.5 according to the present invention shows a section along the line 3-3 (Fig.2) reconfigurable electric motor with a single four-pole hollow permanent magnet in the rotor with radially aligned design.

In Fig.6 according to the present invention shows a section along the line 3-3 (Fig.2) reconfigurable electric motor with four permanent magnets in the rotor with radially aligned design.

In Fig.7, according to the present from which retenu, shows a section along the line 3-3 (Fig.2) reconfigurable electric motor with four pairs of permanent magnets in the rotor radially aligned design.

In Fig.8 according to the present invention shows a section along the line 3-3 (Fig.2) reconfigurable electric motor with four permanent magnets in the rotor, with the design of the compacting magnetic flux.

In Fig.9A according to the present invention shows a section along the line 3-3 (Fig.2) reconfigurable electric motor with a single permanent magnet rotated to ensure the minimum magnetic field in the rotor with radially aligned design.

In Fig.9B according to the present invention shows a section along the line 3-3 (Fig.2) reconfigurable electric motor with a single permanent magnet rotated to ensure maximum magnetic field in the rotor with radially aligned design.

In Fig.10A according to the present invention shows a section along the line 3-3 (Fig.2) reconfigurable electric motor with a single four-pole permanent magnet rotated to ensure the minimum magnetic field in the rotor with radially aligned design.

In Fig.10B according to the present invention shows a section along the line 3-3 (Fig.2) reconfigurable electric motor with a single four-pole permanent magnet rotated to ensure maximum magnetic field in the rotor with radially aligned design.

In Fig.11A according to the present invention shows a section along the line 3-3 (Fig.2) reconfigurable electric motor with one hollow four-pole permanent magnet rotated to ensure the minimum magnetic field in the rotor with radially aligned design.

In Fig.11B according to the present invention shows a section along the line 3-3 (Fig.2) reconfigurable electric motor with one hollow four-pole permanent magnet rotated to ensure maximum magnetic field in the rotor with radially aligned design.

In Fig.12A according to the present invention shows a section along the line 3-3 (Fig.2) reconfigurable electric motor with four permanent magnets rotated to ensure the minimum magnetic field in the rotor with radially aligned design.

In Fig.12V according to the present invention shows a section along the line 3-3 (Fig.2) reconfigurable electric motor with four permanent magnets rotated to ensure maximum magnetic field in the rotor with radially aligned design.

In Fig.13A according to the present invention shows a section along the line 3-3 (Fig.2) reconfigurable electric motor with four pairs of permanent magnets rotated to ensure the minimum magnetic field in the rotor with radially aligned the second design.

In Fig.13B according to the present invention shows a section along the line 3-3 (Fig.2) reconfigurable electric motor with four pairs of permanent magnets rotated to ensure maximum magnetic field in the rotor with radially aligned design.

In Fig.14A according to the present invention shows a section along the line 3-3 (Fig.2) reconfigurable electric motor with four permanent magnets rotated to ensure the minimum magnetic field in the rotor, with the design of the compacting magnetic flux.

In Fig.14B according to the present invention shows a section along the line 3-3 (Fig.2) reconfigurable electric motor with four permanent magnets rotated to ensure maximum magnetic field in the rotor, with the design of the compacting magnetic flux.

In Fig.15A according to the present invention shows a section of reconfigurable electric motor with centrifugal clamping device that holds one of the permanent magnet in the position of the minimum of the magnetic field.

In Fig.15V according to the present invention shows the end view of reconfigurable electric motor with centrifugal clamping device that holds one of the permanent magnet in the position of the minimum of the magnetic field.

In Fig.16A according to the present is obreteniyu shows a side view in section of reconfigurable electric motor with centrifugal clamping device, liberating one permanent magnet in the position of maximum magnetic field.

In Fig.16B according to the present invention shows the end view of reconfigurable electric motor with a centrifugal fixture, liberating one permanent magnet in the position of maximum magnetic field.

In Fig.17A according to the present invention is shown in side view in the context of reconfigurable electric motor with centrifugal clamping device that holds four permanent magnet in the position of minimum magnetic field.

In Fig.17B according to the present invention shows the end view of reconfigurable electric motor with centrifugal clamping device that holds four permanent magnet in the position of minimum magnetic field.

In Fig.18A according to the present invention is shown in side view in the context of reconfigurable electric motor with centrifugal clamping device, releasing four permanent magnet in the position of maximum magnetic field.

In Fig.18V according to the present invention shows the end view of reconfigurable electric motor with centrifugal clamping device, releasing four permanent magnet in the position of maximum magnetic field.

In Fig.19A according to the present invention shows a view of the end face of the rotor reconfigurable electric motor with centrifugal clamping device, turning a four-pole permanent magnet in the position of the minimum of the magnetic field.

In Fig.19C according to the present invention shows the end view of the reconfigurable rotor motor with centrifugal clamping device, turning a four-pole permanent magnet in the position of maximum magnetic field.

In Fig.20A according to the present invention is shown in side view in the context of reconfigurable rotor with the United butt half the length of the magnets shifted to provide a weak magnetic field.

In Fig.20B according to the present invention shows a section along the line 20B-20B (Fig.20A) reconfigurable rotor with the United butt half the length of the magnets shifted to provide a weak magnetic field.

In Fig.21A according to the present invention is shown in side view in the context of reconfigurable rotor with the United butt half the length of the magnets that are aligned to provide a strong magnetic field.

In Fig.21B according to the present invention shows a section along line 21B-21B (Fig.21A) reconfigurable rotor with the United butt half the length of the magnets that are aligned to provide a strong magnetic field.

In Fig.22A according to the present invention shows a side view in section of a magnetic device is activated rotor having closed the prisoners magnets and magnetic shunt for its reconfiguration.

In Fig.22B shows a section along line 22B-22B (Fig.22A) magnetic device is activated rotor.

In Fig.23A shows a magnetic device is activated, the rotor with the magnetic fields created by permanent magnets 72 in the rotor device is activated to ensure a minimum of effective magnetic fields.

In Fig.23C shows a magnetic device is activated, the rotor nesortiranimi magnetic fields created by permanent magnets 72 in the rotor for maximum effective magnetic fields.

In Fig.24A shows a magnetic device is activated, the rotor with a minimum effective magnetic fields.

In Fig.24 shows a magnetic device is activated, the rotor with a maximum effective magnetic fields.

In Fig.25A shows a side view in section of a magnetic device is activated rotor, showing a damping design of the vane type.

In Fig.25V shows a section along the line 25V-25V (Fig.25A) magnetic device is activated rotor, showing a damping design of the vane type.

In Fig.26 according to the present invention shows a side view of a first example implementation of the drive with brushless drive motor that controls the position of the permanent magnet in the rotor of a large engine.

In Fig.27 shows a section along the line 27-27 (Fig.26) of the first example implementation of a brushless drive motor.

In Fig.28A shows the magnets engines is El, shifted via the first example of implementation of the drive to create a weak magnetic field.

In Fig.28C shows the magnets of the motor, aligned by means of a first example implementation of the drive to create a strong magnetic field.

In Fig.29 according to the present invention shows a side view of a second example implementation of the drive with brushless drive motor that controls the position of the permanent magnet in the rotor of a large engine.

In Fig.30 shows a section along the line 30-30 (Fig.29) of the second example implementation of a brushless drive motor.

In Fig.31A shows the magnet of the motor, shifted via the second example of the drive to create a weak magnetic field.

In Fig.V shows the magnet of the motor, shifted via the second example of the drive to create a strong magnetic field.

In all the drawings of the present application is similar components are denoted by the same reference numbers.

The IMPLEMENTATION of the INVENTION

In the following description, considered the best technical implementation of the present invention. The present description is not limiting in nature and was prepared to describe one or more preferred implementations of the present invention. Scope of the invention should be the ü is determined on the basis of the claims.

In Fig.1A shows a side view of the reconfigurable electric motor 10 according to the present invention, Fig.1B shows the end view of reconfigurable electric motor 10, and Fig.2 shows the reconfigurable motor 10 in section along the line 2-2 (Fig.1A). The motor 10 includes a stator winding 14 and the rotor 12, located on the rotary motor shaft 11 and the stator windings 14. The motor 10 is a brushless induction motor alternating current, the rotor 12 which contains at least one permanent magnet 16 (see Fig.3-7), which can be adjusted to provide a weak magnetic field when it starts in an initial asynchronous mode and in a strong magnetic field after its launch to ensure efficient operation in synchronous mode.

In Fig.3 shows a section along the line 3-3 (Fig.2) the first example implementation of a reconfigurable electric motor 10, containing two-pole motor 30A with one two-pole rotary internal permanent magnet 16 (IPM) rotor 12A, located coaxially relative to the motor shaft 11 (Fig.3). On each side of the magnet 16 is formed by air gaps 21, separating the Northern (N) and South (S) pole of the magnet 16 with a radially aligned design. The rods 32 short-circuited winding to ensure the occurrence of induction races is orogeny with angular intervals on the outer radius of the rotor 12 and are held on the length of the rotor 12. The rod can be made straight or twisted to reduce noise, among other benefits. The magnet 16 and the rods 32 supported on the pole pieces 20 of the rotor with the division of air gaps 21. Pole pieces 20 are preferably made of lamellar layers of individually insulated conductive material, such as iron or steel.

In Fig.4 according to the present invention shows a section along the line 3-3 (Fig.2) the second example implementation of a reconfigurable electric motor 10, containing four pole motor 30b with one four-pole rotary permanent magnet 16A located coaxially relative to the motor shaft 11 in the rotor with radially aligned design. The pole tip 20 is divided into four four-part air gaps 21 between adjacent parts. In the rest of the motor 30b is similar to the motor 30A.

In Fig.5 according to the present invention shows a section along the line 3-3 (Fig.2) the third example implementation of a reconfigurable electric motor 10, containing four pole motor 30C with the rotor containing one hollow four-pole rotary permanent magnet 16b located coaxially relative to the motor shaft 11 in the rotor with radially aligned design. Steel shaft 23 passes through the center of the canopy of the magnet 16b. In the rest of the engine 30 is similar to the motor 30b.

In Fig.2A shows a perspective view of the two-pole cylindrical permanent magnet 16 used in the present invention. The magnet 16 has an axis 11a. Despite the fact that the cylindrical magnet according to the present invention is made in the preferred form for the rotary magnet can be used by other forms to provide the opportunity to move to take advantage of the present invention, and an electric motor with movable magnets of any shape that enables the regulation of the magnetic field from the weak in asynchronous mode to a synchronous mode of operation, is not beyond the scope of the present invention.

In Fig.6 according to the present invention shows a section along the line 3-3 (Fig.2) of the fourth example implementation of a reconfigurable four-pole electric motor 10, containing four pole motor 30d with four two-pole rotary permanent magnet 16, which are arranged at angular intervals and a magnetic axis which is parallel to the motor shaft 11 in the rotor with radially aligned design. The pole tip has four outer pole piece 20A and one hollow Central pole piece 20b. The magnets 16 are located radially between the Central floor is red tip 20b and the outer pole pieces 20A, and the air gaps 21 separate each of the outer pole pieces 20A from the adjacent outer pole piece 20A and separate the Central pole piece 20b from the outer pole pieces 20A. The rods 32 squirrel-cage winding are arranged at angular intervals around the outer radius of the rotor 12, reaching lengths of the rotor 12. The rod can be made straight or twisted to reduce noise, among other benefits. Pole pieces 20A and 20b are preferably made of lamellar layers of insulated conductive material, such as iron or steel.

In Fig.7 according to the present invention shows a section along the line 3-3 (Fig.2) of the fifth example implementation of a reconfigurable four-pole electric motor 10, containing four pole motor 30e with the rotor 12, containing four pairs of two-pole rotary permanent magnet 16, which are arranged at angular intervals and a magnetic axis which is parallel to the motor shaft 11 in the rotor with radially aligned design. Other similar examples of implementation can contain four groups of at least three magnets. In the rest of the engine 30e same engine 30d.

In Fig.8 according to the present invention shows a section along the line 3-3 (Fig.2) of the sixth example of the implementation reconfig iremove four-pole electric motor 10, containing four pole motor 30f c rotor 12f, containing four two-pole rotary permanent magnet 16, which are arranged at angular intervals and a magnetic axis which is parallel to the motor shaft 11 in the rotor, with the design of the compacting magnetic flux. Four magnet 16 are angled between the four pole pieces 20C arranged at angular intervals. In the rest of the engine 30f same engine 30d.

In Fig.9A shows a section along the line 3-3 (Fig.2) of the motor 30A (see Fig.3) with one double-pole permanent magnet 16, is rotated with minimum (or weak) magnetic field 24A. A weak magnetic field 24A prevents the starting of the engine 30A in the induction mode, when the original work in asynchronous mode.

In Fig.9B shows a section along the line 3-3 (Fig.2) of the motor 30A with one bipolar permanent magnet 16, is rotated maximizing (or strong) magnetic field 24b. A strong magnetic field 24b prevents engine start 30A, however, provides a more efficient operation in synchronous mode after starting the engine 30A.

In Fig.10A shows a section along the line 3-3 (Fig.2) of the motor 30b (see Fig.4) with one four-pole permanent magnet 16A is rotated with minimum (or weak) magnetic field 24 is. A weak magnetic field 24A prevents the starting of the engine 30A in the induction mode, when the original work in asynchronous mode.

In Fig.10B shows a section along the line 3-3 (Fig.2) of the motor 30b with one four-pole permanent magnet 16A is rotated maximizing (or strong) magnetic field. A strong magnetic field 24b will prevent starting of the engine 30b, however, provides a more efficient operation in synchronous mode after starting the engine 30b.

In Fig.11A shows a section along the line 3-3 (Fig.2) of the engine 30 (see Fig.5) with one hollow four-pole permanent magnet 16b rotated with minimum (or weak) magnetic field 24A. A weak magnetic field 24A prevents the starting of the engine 30A in the induction mode, when the original work in asynchronous mode.

In Fig.11B shows a section along the line 3-3 (Fig.2) engine 30s with one hollow four-pole permanent magnet 16b rotated maximizing (or strong) magnetic field. A strong magnetic field 24b will prevent starting of the engine 30s, however, provides a more efficient operation in synchronous mode after engine start 30s.

In Fig.12A shows a section along the line 3-3 (Fig.2) engine 30d (see Fig.6) with four pole permanent magnets 16, rotated, ensuring a minimum the CSO (or weak) magnetic field 24A. A weak magnetic field 24A prevents the starting of the engine 30d in the induction mode, when the original work in asynchronous mode.

In Fig.12B shows a section along the line 3-3 (Fig.2) engine 30d with four pole permanent magnets 16, rotated maximizing (or strong) magnetic field. A strong magnetic field 24b will prevent starting of the engine 30d, however, provides a more efficient operation in synchronous mode after starting the engine 30d.

In Fig.13A shows a section along the line 3-3 (Fig.2) motor 30e (see Fig.7) with four pairs of bipolar permanent magnets 16, rotated with minimum (or weak) magnetic field 24A. A weak magnetic field 24A prevents the starting of the engine 30e in the induction mode, when the original work in asynchronous mode.

In Fig.13B shows a section along the line 3-3 (Fig.2) motor 30e with four pairs of bipolar permanent magnets 16, rotated maximizing (or strong) magnetic field. A strong magnetic field 24b may prevent the engine start 30e, however, provides a more efficient operation in synchronous mode after starting the engine 30e.

In Fig.14A shows a section along the line 3-3 (Fig.2) engine 30f (see Fig.8) with four pole permanent magnets 16, rotated, ensuring min the minimum (or weak) magnetic field 24A in the rotor, with the design of the compacting magnetic flux. A weak magnetic field 24A prevents the starting of the engine 30f in the induction mode, when the original work in asynchronous mode. In Fig.14C shows a section along the line 3-3 (Fig.2) engine 30f with four pole permanent magnets 16, rotated maximizing (or strong) magnetic field 24A in the rotor, with the design of the compacting magnetic flux. A strong magnetic field 24b will prevent starting of the engine 30f, however, provides a more efficient operation in synchronous mode after starting the engine 30f.

In Fig.15A shows a side view in section of the engine 30A (see Fig.3) with the centrifugal clamping device 40, holding one permanent magnet 16 at the position of minimum magnetic field (see Fig.9A), and Fig.15V shows the end view of the motor 30A. In Fig.16A shows a second side view in section of the engine 30A containing centrifugal clamping device 40 with one exempt permanent magnet 16 at the position of maximum magnetic field, and Fig.16B shows the end view of the motor 30A. Centrifugal clamping device 40 contains a cargo 44, the rotary plate 50, the Belleville spring 48, the movable plate 46, the pin 42 pin socket 52. Loads 44 and tar is Licata spring 48 is selected so because the proper rotational speed of the cargo do move outwards with the transition Belleville springs 48 from the first extended position (Fig.15A) in the retracted position in Fig.16A to provide, thus, the output pins 42 of the slots 52 with the release of magnet 16.

When you stop the engine 30A magnet 16 magnetically drawn in to the position of a weak magnetic field and centrifugal clamping device 40 also draws the pin 42 in the slot 52. As a result, the motor 30A makes a return to the regime of weak magnetic fields at each stop to ensure it can start as an asynchronous induction motor. When the engine 30A proper speed centrifugal clamping device 40 pulls the pins 42 of the pin sockets 52 with securing the release magnet 16. When the proper rotation frequency of the magnetic field in the motor 30A presses the permanent magnet 16 to rotate 90 degrees in the position of a strong magnetic field to provide, thus, efficient operation in synchronous mode.

Centrifugal clamping device Synchrosnap®, performed by TORQ Corp.", from Bradford in Ohio, is an example of a proper centrifugal clamping device. For use in the present invention centrales the second clamping device Synchrosnap® only slightly modified to actuate the pins 42, and not to perform the function of an electrical switch.

In Fig.17A (side view, a weak field), Fig.17V (end view, a weak field), Fig.18A (side view, in a strong field) and Fig.18V (end view, in a strong field) shows the second example of the device to facilitate the transition from the weak magnetic field to a strong magnetic field 24b used in the engine 30f (see Fig.8). Each of the four magnets 16 30f engine attached to a small gear 60, interacting with a large gear 62 and, therefore, all the magnets 16 retain the alignment axis. The pins 42 engage with pin sockets 52 in the large gear 62 in a fixed position motor 30f, and when the engine 30f proper speed centrifugal clamping device 40 pulls the pins 42 of the pin slots 42 with securing the release magnet 16. Similarly, the motor 30A when the engine stop 30f his permanent magnets 16 magnetically preloaded to the position of a weak magnetic field (see Fig.14A) and are tightened to the position of a strong magnetic field (see Fig.14) when the engine speed is sufficient to operate in synchronous mode.

In Fig.19A according to the present invention shows the end view of the rotor 12g reconfigurable electric motor with a centrifugal fixture holding the hollow cylindrical segmented four-pole constant the first magnet 16C (similar to a hollow four-pole permanent magnet 16b in Fig.5) in the position of the minimum of the magnetic field, a in Fig.19C shows the end view of the rotor 12g with a centrifugal device, turning a four-pole permanent magnet in the position of maximum magnetic field. Four loaded small gear 60A have a mass imbalance, which creates a torque when the rotation of the rotor to provide rotation of each gear 60A. Gear 60A interact with a large Central gear 62 to rotate, and the magnet 16C does rotate together with the gear 62. At the stop of the rotor 12g is offset from the magnet 16C to ensure that the magnetic gap 16C' between the gaps 20' pole with a minimum education of a magnetic field. When the unwinding of the rotor 12g mass imbalances in the gears 60A cause rotation of the gears 60A ensuring the rotation of the gear 62 and magnet 16C. By the time the rotor 12g speed synchronous magnetic gaps 16C' are aligned with the gaps 20' pole tips providing maximum magnetic field and effective work in synchronous mode.

In Fig.20A according to the present invention shows a side view in section of the rotor reconfigurable electric motor with a hollow cylindrical segmented four-pole permanent magnet 16C connected back to back half the length and with the poles shifted against the sustained fashion to each other to provide a weak magnetic field, a in Fig.20B according to the present invention shows a section along the line 20B-20B (Fig.20A) reconfigurable rotor with magnets 16C connected back to back half the length and offset from each other to provide a weak magnetic field. In this example, the implementation of the first movable magnet 16A (that is, the magnet closest to the centrifugal push device 40) is configured to rotate to move the poles N-S first magnet 16C relative to the poles N-S fixed to the second magnet 16C to create a weak magnetic field. The creation of such a weak field provides the ability to start the engine with the rotor 12h in asynchronous mode.

In Fig.21A according to the present invention shows a side view of the rotor 12h with a hollow cylindrical segmented four-pole permanent magnet 16C connected back to back half the length and with the poles aligned to provide a strong magnetic field, and Fig.21B according to the present invention shows a section along line 21B-21B (Fig.21A) of the rotor 12h with the United butt half the length of the shorter magnets 16C, aligned to ensure a strong magnetic field. Centrifugal clamping device 40 holds the first magnet in the offset position to achieve a speed sufficient to ensure the possibility of the particular goods 44 to overcome the influence of the spring 48 to release the first magnet 16C, manifesting a tendency to alignment with the second magnet 16C.

In some implementations of the control displacement of the first magnet 16C may be performed by another Electromechanical device or by viscous damping. Environment silicone rolling magnet 16C is an example of viscous damping.

In Fig.22A according to the present invention shows a side view in section of a magnetic device is activated rotor containing a fixed permanent magnets 72 and rotatable nonmagnetic conductive shunt ring 70 to reconfigure the rotor, and Fig.22B shows a section along line 22B-22B (Fig.22A) magnetic device is activated rotor 12i. Rotary shunt ring 70 is located at the outer side of the fixed permanent magnets 72, ensuring their separation from the outer pole pieces 20A, located on the outer side of the upper clamp ring 70 and containing separately isolated lamellar layers to minimize eddy currents.

The inner pole piece 20b (yoke or magnetic anchor) is fixed permanent magnets 72 and provides the return path for the magnetic flux. The yoke 20b is located above the motor shaft 23, preferably interacting to ensure a thickness sufficient to snap the magnetic contours fixed permanent magnets 72 and rotary shunt ring 70. Similarly, the pole tips 20 and 20A, the yoke 20b preferably includes separate isolated lamellar layers to minimize eddy currents, however, it may be made integral. In one example implementation, the stator, the outer pole pieces 20A and the yoke 20b can be performed from the same side of the plate by cutting down each of the necessary forms, ensuring, thus, the use of practically all the material and reduce waste, and, therefore, reduce costs. The use of such technology preferably in large-scale production, for example in the manufacture of air conditioning or engine cooling chambers. Fixed permanent magnets 72 and the yoke 20b can be a pole piece, for example if the engine is a four-pole armature due to the presence of four magnets.

In Fig.23A shows a magnetic device is activated, the rotor 12i with the magnetic fields created by permanent magnets 72 in the rotor 12i, the device is activated to provide the minimum effective magnetic field, and Fig.23C shows a magnetic device is activated, the rotor 12i with the magnetic fields created by permanent magnets 72 in the rotor device is activated to ensure maximum effective magnetic fields. Switching device is activated and negotiorum the provisions of the implementation is on by turning the clamp ring 70 along arcs 71. In the device is activated position, the annular gaps 70A in rotary shunt ring 70 are not aligned with the magnetic gaps 72A in permanent magnets 72 and clearances 20A' in the pole pieces 20A. In nicotinevalium position the annular gaps 70A in rotary shunt ring 70 is aligned with the magnetic gaps 72A in permanent magnets 72 and clearances 20A' in the pole pieces 20A.

In Fig.24A shows a magnetic device is activated, the rotor 121 with a minimum effective magnetic fields 24, and Fig.24 shows a magnetic device is activated, the rotor 121 with a maximum effective magnetic fields 24b. The minimum magnetic field provide the ability to run magnetic device is activated by the engine as asynchronous induction motor, and the maximum magnetic field provide for effective operation of the magnetic device is activated the motor as a synchronous motor.

In Fig.25A shows a section of a magnetic device is activated rotor 121 and the design of viscous damping to prevent rapid changes between shunt and nekontroli actions, and Fig.25V section along the line 25V-25V (Fig.25A) magnetic device is activated rotor 12i, showing the blade damping structure. The design of viscous damping is connected with the pivoting clamp ring 70 to prevent rotation of the shunt to LCA 70. The magnetic field in the rotor 121 preferably provide a natural offset swivel clamp ring 70 in the device is activated position when the position of the rotor 121 in a stationary position and a natural offset in nicotinamine position during engine operation.

Example designs viscous damping includes blades 74 in the chamber filled with a viscous fluid medium 76. The blades 74 can contain multiple blades, for example, four blades. Viscous fluid medium 76 may be a silicone fluid, the coefficient of viscosity which can be selected to provide the necessary viscous damping rotary shunt ring 70. The blades 74 can have holes a that enables the flow of a viscous fluid past the blades 74, because the blades do move along arcs. The number of blades 74, number and size of holes a can be adjusted by the coefficient of viscosity of a viscous fluid for damping rotary shunt ring 70. Rotary shunt ring 70 is preferably damped to prevent vibration when transitioning the engine from asynchronous mode to synchronous mode.

In yet another example implementation of the invention the design of viscous damping used by running clearance around povorotnoj the shunt ring 70. The lumen is filled with a viscous fluid medium, and control of the degree of damping can occur through the selection of the coefficient of viscosity of a viscous fluid. Silicone fluid is an example of a suitable viscous fluid. Although in the present description describes viscous damping for magnetic device is activated rotor, such viscous damping can also be used in any example implementation of a reconfigurable electric motor described in the present application (see, for example, Fig.3-8, 19A, 19B and 20A-21B), and using shunt ring or movable permanent magnet. In each case, the movable element of the magnetic circuit can be in contact with viscous material, such as silicone, or may be connected with the design of viscous damping, described and shown in Fig.25A and 25V. The contact area can be an entire outer surface of the rolling element or part of it. In addition, the coefficient of viscosity of the viscous material can be selected for individual cases, with proper delay of the transition from weak magnetic field to a strong magnetic field.

Usually viscous damping delays the transition from the weak magnetic field at the start to a strong magnetic field to provide efficient operation in synchronous mode. This delay pre is respectfully ranges from one to five seconds, but may be longer depending on the load at startup, and provides a delay in the transition to a strong magnetic field at a speed close to synchronous. During the transition to a strong magnetic field (for example, when 20-30 percent of the alignment), shortly before reaching the motor synchronous speed, a small starting torque, and the delay in the transition leads to a small transient decrease in efficiency. In addition, viscous damping reduces or limits the vibration when the rotor to a strong magnetic field.

The above viscous damping is preferable for a small inexpensive motors, such as motors General purpose, entailing lower costs. In larger, more expensive motors for precise control of the magnetic field of the rotor to optimize efficiency can be used Electromechanical actuator, including, for example, gear and/or hydraulic actuator, pneumatic actuator or electric actuators for precise control of the rotor magnetic field to optimize performance, some examples of implementation of such engines are disclosed in patent application U.S. No. 12/610,271, included in the present description by reference.

Due to the high cost of large motors drive system with reverse the th link is a feasible and cost-effective addition to preconfiguration asynchronous-synchronous motor, since the cost of such a drive system with feedback is a small percentage of the costs associated with the modification of the rotors of large motors or the acquisition of new large engine. In large engines, rotary inertia and/or the load on the engine can significantly increase the startup time. In such cases, the electronic drive can be used to control the magnetic field of the rotor. For example, when the excess load on the engine torque locking of the rotor is reduced the speed to about 50 percent of synchronous speed, and the actuator can displace the elements of the magnetic path in the rotor to reduce the rotary magnetic field to return the engine to its original state under the action of the induction time to reduce the motor load or achieve asynchronous speed at which the drive can re-align the elements of the magnetic circuit.

In Fig.26 shows a side view of a first example implementation of the drive mechanism containing brushless drive motor 80, attached to the rotor with permanent magnets, and the stator of a large engine 30j, and Fig.27 shows a section along the line 27-27 (Fig.26) brushless drive motor 80. The drive motor 80 is connected with the control device (the if processor) 86, which receives energy from the engine or a separate source of low voltage. The sensor and/or position sensor 88 that is used to determine the rotary position, is connected with the control device 86 to provide feedback and control. The drive motor 80 includes fixed coils (stators) 82 and the rotor 84 and the attached magnets. The drive rotor 84 (rotor drive) is connected with a rotating permanent magnet(s) of the rotor 12j or rotary shunt parts of the rotor 12 to regulate the rotor 12j from the weak magnetic field to ensure the start to a strong magnetic field to provide efficient operation in synchronous mode.

In Fig.28A shows the magnets 16 of the engine 30j, adjustable by means of a first example implementation of the drive to create a weak magnetic field, and Fig.28C shows the magnets of the motor, controlled by a first example implementation of the drive to create a strong magnetic field. The drive rotor 84 is connected directly with the gear 62 rotates the gear 60A (see Fig.28A and 28C), attached to each cylindrical magnet 16.

When starting the drive motor 80 makes a turn at a speed similar to the rotor 12j, using sensor data and/or position sensor for installation of the rotor magnets (or controldata) to a weak magnetic field, and when the engine 20j maximum asynchronous rate may increase the speed of a drive motor or its reduction to ensure rotation of the rotor magnets (or shunt) of the rotor 12j in the position of a strong magnetic field, where the normal magnetic flux will support the alignment and the drive motor is free to take a turn with the rotor 12j without any losses.

In Fig.29 according to the present invention showing a second example of implementation of the drive, brushless driving motor 80 which is connected with the larger engine 30k, and Fig.30 shows a section along the line 30-30 (Fig.29) brushless drive motor 80. A cylindrical permanent magnet 16d has fractures passing through the coil 82 with the formation of the rotor of a drive motor 80A. Thus, the drive motor 80 is arranged to control the position of the magnets 16d.

In Fig.31A shows the magnets 16d motor 30K controlled drive motor 80 using a positioning sensor and/or sensor 88 position and a control device 86 to create a weak magnetic field, and Fig.V shows the magnets 16d controlled drive motor 80 to create a strong magnetic field.

INDUSTRIAL APPLICABILITY

The present invention finds industrial application is in the field of electric motors.

VOLUME INVENTIONS

Although the present invention is disclosed, for example, specific examples of implementation of the invention, the experts in this field can be made numerous modifications and changes without going beyond the scope of the present invention defined by the attached claims.

1. Reconfigurable brushless AC motor, operating in asynchronous and synchronous modes and contains:
the stator receiving the electric signal of the alternating current and generating a rotating stator magnetic field,
rotatable motor shaft;
the rotor, making the turn with the motor shaft and containing:
inductive elements for cooperation with the rotating stator magnetic field by providing an asynchronous mode of operation for engine start;
pole pieces attached to the rotor, and
at least one movable element of the magnetic circuit, located in the rotor in cooperation with the pole pieces and having a first position with the creation of a weak magnetic field to enable starting of the induction motor and configured to move relative to the rotor in the second position with a strong magnetic field for interaction with the rotating stator magnetic field is ensuring effective operation in the synchronous mode.

2. The motor under item 1, in which the movable element of the magnetic circuit includes at least one movable permanent magnet.

3. The motor on p. 2, wherein said at least one movable permanent magnet contains one permanent magnet, the magnetic axis of which is parallel to the motor shaft.

4. The motor on p. 2, wherein said at least one movable permanent magnet contains one rotary hollow permanent magnet, located coaxially with the motor shaft.

5. The motor on p. 2, wherein said at least one movable permanent magnet has four rotatable permanent magnet having parallel axes and arranged with an angular spacing from each other in the rotor with radially aligned design.

6. The motor on p. 2, wherein said at least one movable permanent magnet contains four parallel groups of at least two magnets spaced from each other in the rotor with radially aligned design.

7. The motor on p. 2, wherein said at least one movable permanent magnet contains four parallel pairs of rotatable permanent magnets spaced from each other in the rotor with radially aligned with what instrukzia.

8. The motor on p. 2, wherein said at least one movable permanent magnet contains four parallel rotary permanent magnet located at a distance from each other in the rotor, with the design of the compacting magnetic flux.

9. The motor on p. 2, additionally containing centrifugal clamp for holding at least one magnet in the position of minimum magnetic field to achieve a speed sufficient to move in synchronous mode.

10. The motor under item 1, in which the movable element of the magnetic circuit contains a movable shunt part, made of magnatunebrowser and namagnichivaemost material with a magnetic connection with the fixed permanent magnets and pole pieces and can be moved to regulate the magnetic field from weak to strong.

11. The motor on p. 10, in which the movable shunt part is made in the form of a rotatable shunting rings, cylindrical, coaxially with the motor shaft and can be rotated around an axis located coaxially with the motor shaft.

12. The motor on p. 11, in which the rotary shunt ring has a rotary cylindrical shape with a shunt parts separated by the first gap, passing from the PE Edna part to the rear part, and fixed permanent magnets are cylindrical in shape with magnetic parts, separated by second gaps extending from the front toward the rear.

13. The motor under item 12, in which the rotary shunt ring is located in the pole pieces of the rotor, and fixed permanent magnets are rotatable shunting ring.

14. The motor on p. 13, in which the pole pieces are gaps aligned with the second gap located between the magnetic parts.

15. The motor on p. 14, in which the first gap in the rotary shunt ring
made with the possibility of conclusion of alignment with the second gaps in the fixed permanent magnets and the gap pole pieces with creating a weak magnetic field to enable starting of the induction motor and
made with the possibility of rotation in a second position in which the first gap in the rotary shunt ring is aligned with the second gap in the fixed permanent magnets and the gap pole pieces with a strong magnetic field, ensure effective operation in synchronous mode.

16. The motor under item 1, in which the rotation of the rotary element of the magnetic circuit is damped by the viscous damping of the structure.

17.The motor on p. 16, in which the design of viscous damping contains blades that are located in the chamber with a viscous fluid medium.

18. The motor on p. 16, in which the design of viscous damping contains viscous the fluid in direct contact with the rotary element of the magnetic circuit.

19. Reconfigurable brushless AC motor run in asynchronous mode with the subsequent transition to more efficient synchronous operation mode and contains:
the stator, the receiving power AC signal and generating a rotating stator magnetic field,
motor shaft passing through the stator,
the rotor is located on the motor shaft and making a turn with him, and containing:
inductive elements for cooperation with the rotating stator magnetic field by providing an asynchronous mode of operation for engine start,
pole pieces of the rotor are made of conductive namagnichivayushchego material, and
at least one rotatable permanent magnet located in the rotor and having a magnetic axis parallel to the motor shaft and magnetically interacting with the pole pieces, and having a first position, resulting in the creation of a weak magnetic field to enable the initiation of induction number is I, and made with the possibility of rotation in the second position, resulting in the creation of a strong magnetic field for interaction with the rotating stator magnetic field, ensuring effective operation in the synchronous mode,
while providing a delay of rotation of the specified at least one rotatable permanent magnet of the position of a weak magnetic field in the position of a strong magnetic field through viscous damping to achieve a speed sufficient to move in synchronous mode.

20. Reconfigurable brushless AC motor run in asynchronous mode with the subsequent transition to more efficient synchronous mode and contains:
the stator receiving the electric signal of the alternating current and generating a rotating stator magnetic field,
motor shaft passing through the stator,
the rotor is located on the motor shaft and making a turn with him, and containing:
the rods that form the design of a short-circuited winding for the inductive interaction with the rotating stator magnetic field by providing an asynchronous mode of operation for engine start,
pole pieces of the rotor are made of conductive namagnichivayushchego material
at least one fixed permanent MAG is it located in the rotor,
at least one rotary shunt part, made of magnatunebrowser namagnichivaemost material that magnetically interacts with a fixed permanent magnets and pole pieces and is made to rotate around an axis that is parallel to the motor shaft for regulating the magnetic field of the rotor from the weak magnetic field for inductive start-up of a strong magnetic field to provide efficient operation in synchronous mode;
while providing a delay of rotation indicated at least one rotary shunt part of the provisions of the weak magnetic field in the position of a strong magnetic field through viscous damping to achieve a speed sufficient to move in synchronous mode.



 

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