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Electrical machine - design with top casting Invention is referred to electrical machine with permanent magnet comprised of stator and rotor designed to rotate in stator and method and for this machine designing. The electrical machine contains rotor with permanent magnets and stator having coils wound on the stator rotors for interaction with magnets through air gap. Rods and coils are covered by circular body of the stator. There is a chamber with cooling medium for coil cooling. The stator body comprises two matching segments, which set stator rods and coils in the machine. Each segment is formed of reinforced plastics. At least one segment has pole tips of the stator rods, which are made on its top. |
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Method and device for conversion of thermal energy to electrical energy Device for implementation of the method includes heater-evaporator 1 with heat exchange ribs 2, airlift 3, condenser 4, ejector 5, energy converter 6, and branch pipe 7. Liquid 8 circulates inside the device. |
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DC collector electrical machine contains the main trapezoidal poles with the central and lateral non-magnetic inserts, minimum 5 pieces placed parallel to an axis of the main poles. Total width of non-magnetic inserts shall be no less than the size of the uniform air gap between the main pole and the armature. The central non-magnetic inserts have the height equal to the total height of the inductor core and the yoke magnetic conductor along the main pole axis. The height of lateral non-magnetic inserts decreases at approach to lateral surfaces of the core of the main poles. The invention allows to reduce negative impact of the armature field and to implement the motor design with a uniform air gap without damping windings on the main poles. |
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Synchronous reluctance motor consists of toothed stator, in which slots there is three-phase winding (m=3), toothed rotor rotated in bearings. At that number of pairs of the rotor poles p and number of stator teeth Z are interrelated by the following ratios: p=y·k, (y+1)·k, where y=1; p=(y+1)·k, (y+2)·k, where y=3, 4; p=(y+2)·k, (y+3)·k, where y=5; p=(y+3)·k, (y+4)·k, where y=7; p=(y+3)·k, (y+5)·k, where y=8; p=(y+4)·k, (y+5)·k, where y=9; p=(y+5)·k, (y+6)·k, where y=11. At that Z=y·m·k and y, k are positive integer numbers. |
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Invention relates to acceleration engineering and can be used to accelerate macrobodies, simulate micrometeorites and manmade particles and in high-speed impact physics. The pulsed rail accelerator comprises a conducting armature, rail electrodes, magnetising coils, a current sensor, untriggered dischargers, pulsed storage capacitors, triggered dischargers, separating resistors of the pulsed storage, power supply units, triggered discharger drivers and a control system. The pulsed rail accelerator has a flexible modular structure which enables to increase the number of stages to achieve the required velocities. All modules have the same structure, which simplifies hardware development. |
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Invention relates to the electrical machine. The electrical machine contains the housing (2) with a stator (3) with the stator windings (3a), a rotor (4), bushings (6, 7) passing through the housing (2) the first part (9) of which is located in the housing (2), and the second part (10) - outside of the housing (2). The stator windings (3a) are connected to the first part (9) of bushings (6, 7). Some plugs (7) have the second parts (10) connected to each other by an element (12). The connecting element (12) is connected to a water cooling loop (13). The water cooling loop (13) is located outside of the housing (2). |
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Diagnostic method for switching state of commutator machines In diagnostic method for switching state of commutator machines at collector rotation during passage of collector plate with pre-labelled mark past the collector position sensor light flux from it is converted by the sensor to sync pulse with duration equal to time of the collector plate passage under leave edge, which is delayed by controlled pulse delay device until the moment of approach of pre-labelled collector plate under leave edge. At the moment of approach of pre-labelled collector plate under leave edge sync pulse is sent to photoelectric converter, which by means of charge-coupled device matrix converts light emission from sparking into a signal equivalent to image of commutator and sparking process during the period of the surveyed plate passage under leave edge. The obtained signals are summed up, filtered up to production of the resultant signal equivalent to the sparking image, integrated and visualised. Two values are obtained for sparking intensity and ratio of sparking brush edge length to complete length of the brush, and sparking degree is set for the surveyed collector plate against these values as specified in the application materials. |
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Rotor for modulated polar machine Invention relates to a rotor for a modulated polar machine. The rotor includes the following: a tubular supporting structure forming a circular mounting surface; with that, the tubular supporting structure includes many elongated cavities in the mounting surface; elongated cavities are continued in the direction of the axis of the tubular supporting structure; and many constant magnets located on the mounting surface of the tubular supporting structure and magnetised in the direction of the circle of the above rotor so that a magnetic field of the rotor can be created; constant magnets are separated from each other in the direction of the circle of the rotor with continued polar rotor sections in an axial direction. At least one constant magnet or one polar section of the rotor passes at least partially into one of the many cavities. |
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Invention relates to electrical equipment, to high-speed reversible rotating electrical machines in which due to compensation of centrifugal accelerations of the rotor its angular speed and power of the whole electrical machine significantly rises, and can be used as an electric drive for powerful high-performance centrifugal pumps and fans, for pumping of liquids and gases, in transport, especially water transport applications, and in closed power supply systems. The method of compensation of centrifugal force of rotor of the reversible electrical machine consists in control of magnetic field of rotor poles by constraining magnetic field induced by a co-directed parallel flow of currents in the rotor conductors located oppositely the values of which are proportional to the circumferential speed of the rotor. The device for compensation of centrifugal force of rotor contains a stator, a rotor, bearing and collector units. The stator has three alternating pairs of conductors connected parallel and hooked-up to a three-phase network. The rotor has minimum two conductors (poles) framing magnetically soft material of the rotor. The stator and the rotor have amount of conductors multiple to two, placed parallel. Grooves with conductors of the stator and the rotor are evenly distributed on their surfaces. |
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In the brush holder of the commutator machine containing split brushes along the collector length, their total gauging complies with the following condition: 0.5b"л"≤Δb"ш"≤b"л", where b"л" - collector plate thickness on its working surface; Δb"ш" - total brush "gauge" along the brush holder width. |
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Main line pump variable frequency drive control unit Main line pump variable frequency drive control unit comprises a frequency converter, an electric motor, a pump, pressure sensor, two comparator units, two keys and a timer. The pressure sensor output is connected to the first input of the first comparator unit the second input of which the setting pressure signal is supplied. The output of the first comparator unit is connected to the first input of the second comparator unit and the power input of the first key the control input of which is connected to the first output of the second comparator unit the second output of which is connected to the control input of the second key the output of which through the timer is connected to the control input of the frequency converter. To the second input of the second comparator unit and the power input of the second key the signal of allowable pressure difference is supplied. |
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Power storage and supply method and device for its implementation Using mechanical energy storage based on spiral spring the energy storage device comprises a body, pedal drive, gear box, gear box handle, control panel, indicator, shafts, mechanical energy storage consisting of spiral spring, interlocking device, sensor, combined motor-generating unit, converter, commutation switches, rectifier, comparator, control system. The gear box is intended to change frequency and torsion torque at transmission of rotation between shafts and pedal drive in different operation modes of the device. Rotation from pedal drive through shaft by means of gear box may be transmitted to the storage device due to twisting of spiral spring. Mechanical energy may be also stored. Data on spiral spring status is recorded by the sensor and its fixation or release is defined by the interlocking machine. The combine motor-generating unit can be used both in motor mode and in generator mode. |
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Brake drive comprises case to house revolving screw coupled via reduction gear with motor (11). Nut with rigidly secured sliders is fitted on said screw. Stack of springs is fitted between the ends of nut ends and case ends. Two brake shoes are arranged in said case. One of brake shoes is fixed in said case while opposite shoe is fitted therein to slide to contact with said sliders. Case slides in guides with axes parallel with moving brake shoe direction. This motor is a self-controlled inverted-bed or a step motor. Case can incorporate plungers in amount required for creation of the force larger than maximum force of said spring stack. Plunger axes are parallel with nut axis. Motor shaft output extension can be provided with journal for wrench fit. |
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Self-propelled surface rotor excavator with cutter-drum drive Proposed invention relates to self-propelled surface rotor excavator, preferably in the form of road hoe, screw-rotor snow plough or open-cut combine, with cutter-drum capable to rotate around horizontal axis and with cutter-drum drive containing at least one electric motor installed inside the cutter-drum where electric motor stator and rotor are installed inside air- and/or dust-tight motor housing. It is proposed to provide cutter-drum drive motor located inside cutter-drum body with cooling device having closed liquid cooling circuit. Due to high heating capacity of suitable cooling liquid such as oil or water and glycol mixture, small volume flows are enough for liquid cooling circuit thus allowing small pipeline cross-sections. On the other hand, due to closed structure of liquid cooling circuit, it is possible to avoid any dust entering into cutter-drum drive as well as dust generation by exhaust air. |
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Invention relates to motor with segmented armature. The motor with the segmented armature contains the coil frame with internal space, the rotor installed in the coil frame and with a rotation shaft; and multiple armature winding coils formed to enclose the rotor. The armature winding coils are installed on an external circle of the coil frame. Each armature winding coil is formed hollow, bent from one or opposite ends of its intermediate section and is formed horseshoe- or U-shaped. The coil frame is segmented into the top and bottom frames of the coil with semicircular section. The top and bottom frames of the coil are assembled in such a manner that they are facing to each other. |
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System and method for advance detection of failure in bearing Invention relates to electrical engineering and can be used in electric machines. The system and the method for advance detection of the failure in the bearing provide for an analysis of a cause of the damage to the bearing current. The following stages are implemented for advance detection of failures in a bearing, which are caused by current passage of the bearing: formation of an evaluation based on at least one long-time measurement of at least one measured parameter specific for occurrence of currents of the bearing during operation of the bearing depending on the bearing current amplitude, and formation of presentation of measurement results based on the evaluation and evaluation of the presentation based on detection of images. The invention also proposes a device for implementation of the method. |
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Ac generator with external combustion engine Invention relates to engine-generator systems. Proposed generator comprises cylinder, working piston, refrigerator and heater as well as circular winding on said cylinder. Said cylinder is divided by displacement piston to cold and hot chamber. Said working piston slides in cold chamber. Refrigerator, generator and heater are arranged in series to communicate said cold and hot chambers. Working piston is rigidly coupled piston made of magnetic material. Winding cores feature double-tee cross-section. Ring magnets facing each other by unlike poles are arranged on both sides of said cores. Piston rod has circular grooves filled with nonmagnetic material. Piston position transducer is fitted on cylinder nearby displacement piston connected in series via microprocessor with control valve on pipeline nearby heater and cold chamber. |
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Device and method for current measurement in bearing Invention relates to the sphere of electrical engineering and can be used in electric machines. Contactless current measurement is implemented in device and method for current measurement in bearing. Contactless voltage measurement is implemented by means of in-series circuit of capacitors. Thus voltage of bearing is peculiarly good for measurement in the range of high frequencies. |
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Cooldown of superconductive machines Invention relates to a cooling device of superconductive machines, which includes a closed thermosyphon system that can be filled with a liquid cooling agent and that is provided with an evaporator for evaporation of the liquid cooling agent. The cooling device of superconductive machines includes a closed thermosyphon system that can be filled with a liquid cooling agent and that is provided with an evaporator for evaporation of the liquid cooling agent. Besides, the devices are provided, which are intended to increase an evaporator surface sprayed with the liquid cooling agent, which are made in the form of at least one displacement element for displacement of the liquid cooling agent. |
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Procedure for fabrication of impeller of centrifugal endine-driven pumps Method of impeller fabrication consists in that an impeller magnetic conductor is made laminated using electric steel with a short-circuited aluminium winding. The laminated magnetic conductor of the impeller is made by coiling of a tape from electric steel on a ring which is made from aluminium alloy, and slots for the short-circuited winding in the tape are cut by means of punch and die during tape coiling. Then the magnetic conductor with slots for the short-circuited winding is placed into a casting mould which is filled with melted aluminium alloy. The ring is melted and fused with the aluminium alloy filled into the casting mould, and the melted aluminium alloy fills all irregularities of the magnetic conductor, providing firm connection of the engine rotor and the pump impeller. |
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Mounting arrangement for stator end windings of turbine generator Stator comprises a core with laid rods of winding. End windings are rigidly fixed between conical surfaces of inner and outer insulating rings. At cylindrical surface of outer ring there is a flat spring ring, through which the outer ring is fixed rigidly to the core clamping plate. The spring ring is made of metal non-magnet material. Between the spring ring and clamping plate there is a remote element at the distance defined by the remote element in axial direction. At cylindrical surface of the outer ring there are brackets with connected connecting buses, which are fixed rigidly to output rods in the area of end winding heads. |
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Electrical machine comprises imbricated core of the stator, at which cylindrical surface there are slots with winding coils placed inside them. The stator core is mounted at support housing and is fixed rigidly to it. The stator support housing is made as a cylindrical barrel with sidewall mid part provided with cylindrical ledge. Stator is arranged inside cylindrical cavity of the rotor. The rotor comprises inductor based on permanent magnets. Rotor body is made as two detached discs fixed by their edges and faced to each other with their cavities. Inductor is mounted at peripheral area of the rotor housing and is comprised of permanent magnets shaped as trapezoidal bars oriented along the rotor longitudinal axis thus forming a composite magnet ring with creation of Halbach array. A bearing unit of the electrical machine includes radial and thrust magnetic bearings. Radial magnetic bearings are represented by composite permanent magnets magnetised so that they create Halbach array. Composite permanent magnets form thrust magnetic bearings. |
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Invention relates to electrical engineering, to electrical machines. The method includes assembling an array of non-magnetised anisotropic segments of permanent magnet around a spindle of the rotor enclosed into a metal ring. Then optimal magnetising directions are defined for the above segments, the assembled segments are positioned around the rotor spindle so that optimal magnetising directions for anisotropic segments of a permanent magnet are aligned in direction of magnet flux lines generated by a magnetiser. Excitation of the magnetiser for the purpose of segments magnetising is made by direct-current pulse during optimal pulse duration, which depends on thickness, magnetic permeability and specific electrical resistance of the locking ring. |
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Invention relates to machine building and can be used in drives of the hospital beds. The linear actuator comprising casing (1) out of at least two parts (1a, 1b), mounting frame (2), reverse motor (7) with mechanical gear (22), spindle (5) driven by the reverse motor (7) via the gear, enclosure (16) for the spindle (5) installation, spindle nut (6) installed without possibility of rotation on the spindle (5), outside pipe (3) installed such that the spindle (5) passes inside it, actuator (4) installed telescopically inside the outside pipe (3) and connected with the spindle nut (6), front connection (8) on the outside end of the actuator (4), rare connection (9) inside the casing (1). The rare connection (9) has slot (31) for the spindle (5) bearing, at that the reverse motor (7), gear (22) and outside pipe (3) are secured on the mounting frame (2), at that the mounting frame (2) is made as separate element that is load-carrying structure of the actuator. The mounting frame (2) has wall (2a), around which and on which two parts (1a, 1b) of casing (1), reverse motor (7), gear (22) and outside pipe (3) of actuator are installed, the outside contour of the wall (2a) of the mounting frame (2) complies or mainly complies with the outside contour of the casing (1) cross-section. |
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Motor comprises sealed stator with two cores with coils, current lead-in and head for coupling with pump. Sais stator accommodates moving rod including connecting threaded bar for coupling with pump plunger and active sealed slider connected by thread joint with rod made in coupling. Slider comprises axially magnetized magnets and poles made of structural steel fitted on the pipe. Magnets and poles are divided into working stacks interconnected by couplings. Said rod is arranged in inner pipe made of stainless steel with honed surface to make the clearance between the latter and rod surface. Said head is coupled with stator body by thread joint via sealed spacers provided with channels. Compensator with resilient diaphragm is secured to stator bed. Said diaphragm is composed of a bubble with mid diameter larger than that of its each ends. Note here that one end of said diaphragm is coupled with stator bed while its opposite end is jointed with coupling connecting the motor with pump. |
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Method of braking of electric machine rotor running with magnetic bearings Under method of braking of the electric machine rotor signal for the rotor braking is supplied from the control system of the controlled magnetic bearings. The brake moment is created by the electric magnets of the controlled magnetic bearings by current supply to their windings. |
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Multipolar electric power generator with magnet compensation Invention is related to the area of electric engineering, and namely to electromechanical induction synchronous AC generators. The generator comprises a stator frame with stationary energy-generating elements fixed along the rotor circumference, a multipolar rotor installed so that it may be rotated around its axis. The rotor comprises the preset quantity of permanent magnets mounted along the rotor circumference with a gap in regard to the stator energy-generating elements. The generator comprises also a single-reduction gear unit. Diameter of driving pinion of the reduction gear unit corresponds to the rotor diameter while its idler is fixed at the rotor axis. The stator energy-generating elements are not placed continuously along the rotor circumference, but symmetrically and separately from each other, at that diametrically opposite elements form their own pair, and these pairs of the energy-generating elements are shifted in regard to its other with the preset pitch along the rotor circumference. |
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Electric gear motor and method of its assembly Electric gear motor comprises an electric motor, a speed decelerating reducer which transfers a driving force of the electric motor, a housing which contains the reducer and the electric motor, and a yoke fixed to external part of the housing. The housing has a concave part, a holding hole and a positioning chamber. The connecting unit is moved along the first direction and is mounted to the housing concave part. The brush holder is moved along the second direction and is mounted to the holding hole. The reducer is moved along the first direction and inserted into the positioning chamber. The yoke is moved along the second direction and fixed to the housing. |
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Laminated core of magnet bearing and designing method of this laminated core Invention relates to electrical engineering. Imbricated core of a combined journal and thrust magnet bearing is made as a pack of coated plates with at least one radial cut in each plate. These cuts prevent induction of eddy currents induced by changes in axial control magnet fluxes passing through the central opening of the imbricated pack. Magnetic symmetry is maintained due to turn of each plate of the imbricated core in regard to the previous plate per a certain angle. |
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Method and device for generation of electrical power under field conditions Group of inventions relates to military equipment, namely to methods for generation of electrical power under field conditions and to devices allowing to implement these methods. A generation method of electrical power under field conditions consists in use of kinetic energy of powder gases formed during small arms shooting and leaving a channel of a barrel or a muzzle adapter. A device for generation of electrical power under field conditions includes a housing inside which an electric generator, a drive mechanism of the electric generator, a dynamic or positive displacement gas engine, an electrical power accumulation and/or transfer device and a fixation mechanism for small arms is located. |
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Generator includes a housing, induction system consisting of movable and fixed parts. The movable part is made as one double-pole permanent magnet shaped as a convex segment of sphere fixed at a resilient element. The fixed part consists of a coil made as a concave sector of sphere. The movable part may be mounted with angular shift in regard to the fixed one. The resilient element may be made as L-shaped rod. Movement limiters may be mounted in the case between the fixed and movable parts. The resilient element may be made as a spring, and the first movement limiter and a platform are introduced to the case. The second movement limiter is mounted at the spring. |
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Synchronous generator with excitation from permanent magnets Synchronous generator with excitation from permanent magnets comprises a load-bearing unit of the stator with support bearings, where a ring core is formed with pole horns along periphery. The core is equipped with electric coils with multiphase armature wining of the stator, which are placed at pole horns. Circular rotor is mounted at the support shaft so that it may be rotated in support bearings along the stator ring core. Ay inner side wall of the rotor there is a circular magnetic insert with alternate magnet poles out of p-pairs alternating in circumferential direction. The magnet core is made as two identical rings, which may be moved in axial direction. There is a resilient element between the rings. |
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Invention relates to electric engineering and can be used at manufacture of a short-circuited rotor of an asynchronous machine. The invention proposes a manufacturing method of short-circuited rotor (1) for asynchronous machine (2), which includes core (5) with bevelled slots (4), end rings (6) from the first material and short-circuited bars (3; 11; 12) from the second material with higher specific electric conductivity in comparison to the first material, which are moulded-on from faces to core (5) of the rotor, and which are laid into bevelled slots (4) of short-circuited rotor (1) and almost fully fill internal zone (7) of the slots if to look in radial direction of core (5) of the rotor. |
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Rotor has rotor casing that rotates around the rotor axis of rotation. Permanent magnets are installed on the rotor casing. The rotor casing has pockets passing in direction towards the rotor axis of rotation. The pockets are made such that on the rotor casing the guides are created passing in direction of the rotor axis of rotation. The permanent magnets are held in place by the guides in radial direction and in direction of the rotor rotation. Rotor for the permanent magnets securing in the direction of the rotor axis of rotation in its axial end are of each guide has a lock device. The lock device is made such that during the movable element movement the lock device creates the lock device connection with the rotor casing with geometrical closing or with force closing. |
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Three-coordinate movement device Three-coordinate movement device comprises a control unit, an electromechanical converter made as three-coordinate electromechanical motor containing induction system consisting of movable and fixed parts. The movable part is made as four double-pole permanent magnets fixed at resilient rods and mounted with angular shift in regard to the fixed part consisting of four coils located along the case perimeter. |
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Electrical machine isolation drying method Invention relates to electrical engineering and can be used mainly for maintenance and repair of electrical machines. The method of drying of isolation of electrical machines consists of five steps. At the first the surface layers of isolation are dried using the method of electroosmotic drying of isolation. At the second step the surface layers of isolation are dried by air flow. At the third step the drying is performed by air flow without heating. At the fourth step the drying is performed during assembly of the electrical machine in the open air. At the fifth step drying is performed by passing of electric current through the electrical machine winding. |
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Thyratron-inductor motor comprises a case where an inductor and an armature are installed with the possibility of relative rotation. Teeth and grooves are provided on the inductor and the armature. Excitation coils mounted in the armature grooves are connected to a constant voltage source via controlled rectifier switches. Number of the armature teeth is equal to the number of inductor teeth. Additionally n right electric magnets and n left electric magnets are installed in the end face part. The relation of the tooth width of the inductor and the armature to the tooth division of the inductor falls within 0.35-0.45, and the relation of the groove width of the inductor and the armature to the division of the inductor falls within 0.55-0.65, the tooth height of the inductor and the armature is equal to 4 heights of an air gap. |
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Invention relates to a control method of functioning of a rotating electric machine, namely an asynchronous double-current machine with a power range of 20-500 MVA. The invention proposes a control method of functioning of a rotating electric machine that includes the following: a rotor rotating about the axis and concentrically enveloped with a stator; the rotor and the stator include a multilayered rotor element and a multilayered stator element respectively, which are assembled of sheets laid in layers and pressed in an axial direction with formation of laminated material and compressed by means of electrically insulated tightening bolts passing through the multilayered rotor element and the multilayered stator element in an axial direction and insulated relative to the multilayered elements; with that, to each of the tightening bolts there supplied is the specified potential relative to the corresponding multilayered element by means of a voltage source, and current passage through the voltage source and/or through the corresponding tightening bolt is measured and evaluated. |
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System based on hybrid magnetic bearings System based on magnetic bearings comprises a shaft, a rotor, a stator mounted in a cooling jacket, a casing, end shields, an axial electromagnetic bearing, passive radial magnetic bearings, a radial damper, sensors of radial and axial rotor positions. An axial passive damper is added, it consists of an annular permanent magnet which is magnetically charged in the axial direction, installed in the end face surface of the shaft, and of a copper ring installed in the end shield. The radial damper is passive, it consists of an annular permanent magnet with radial magnetisation and a copper bush. Sensors of the rotor's radial position are made as Hall-effect transducers set perpendicularly to the external surface of the copper bush, and the sensors of the rotor's axial position are made as Hall-effect transducers set perpendicularly to the end face surface of the copper ring. |
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Invention is referred to electric generator of wind-driven power plants. The generator comprises a stator having windings that are placed in grooves formed by sheets. Sheets form the complete laminated stack is penetrated with threaded bolts. When viewed in stator axial direction the complete laminated stack is fixed at the stator ring by its front and rear ends. At that, when viewed in stator axial direction, in the middle part of the stator ring there is an additional point of fixation for the laminated stack and a supporting ring is welded to the above point. The complete laminated stack is divided into two parts by the supporting ring. At that the generator has depth more than 1000 mm, in particular 1200 mm, and diameter more than 2 m, in particular 5 m, and rated power of more than 1 MW, in particular 3 MW. |
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Unipolar direct-current generator Generator comprises a rotor on the axis, a magnet system with a closed core, winding for voltage generation, switching elements that re placed so that their relative rotation is possible. The rotor is equipped with a circular core, which butt ends are made with magnetic polarity of one sign and at least one toroidal winding for voltage generation. Two conductive rings of soft magnetic material join end surfaces of the toroidal winding. The circular core includes two circular magnets magnetised axially and the conductive core made of a flat ring of soft magnetic material and the above magnets with end surfaces of the same magnetic polarity join the above ring. Their polar surfaces with the other sign of magnetic polarity are the surfaces of the circular core of the same magnet polarity. Outer conductive rings, conductive core and magnets form the magnet system with closed core. Winding leads are coupled to switching elements, and fixed switching elements, which can slide and intended for connection of electrical loads come in contact with the above switching elements. |
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Electrical machine stator with water cooling by flow coolant This stator comprises housing, jacket with coolant passages and magnetic core with working winding. Cooling of front parts of the latter is executed either by heat removal element winding front parts arranged between plies or by those above. Said heat removal elements are composed of cylinders with ribs on outer surface extending radially outward to contact with jackets. Every said cylinder of said hear removal elements has cavity between its inner and outer walls. Said ribs are composed of heat pipes with their ends connected to cylinder outer walls to abut tightly by their end condensation ends on said jacket. Cavity between cylinder inner and outer walls of heat pipes are intercommunicated to make a sealed system filled with working fluid of heat pipes. |
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Device for conversion of energy of working medium to electrical energy Device for conversion of energy of a working medium to electrical energy includes a housing made in the form of a detachable cone ring, the inner cavity of which has a variable cross-section. Electrical power generator is installed on a shaft and provided with blades at a detachment point of the cone ring. Working elements are made in the form of elastic toroids, the inner walls of which are screw-like twisted relative to central axes of the working elements which are filled with elastic fillers and installed on an endless band in the ring cavity. With that, an outlet channel in the housing is formed with a connector of the ring with a maximum cross-section value at the outlet of the working element. Blades of the generator interact with the working elements. As fillers of the working elements, there used are cylindrical inserts with central holes along longitudinal axes, the diameters of which exceed diameters of screw-like twisted inner walls of the toroids. Surfaces of the inserts are coated with an antifriction lubricant. The inserts are two-layered, the external layer of which is made from elastically compressed material, and the internal one is stiff and tubular and forms a central non-deformed hole of each insert and has a curvature in a longitudinal cross-section, which corresponds to the curvature of the annular housing. |
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Bearing assembly mainly for asynchronous electric motor with horizontal axis configuration Invention is related to electric engineering, to elements of asynchronous electric motor with horizontal axis configuration. At rotor rotation of the asynchronous electric motor induction current is excited in stator electromagnetic field at the rotor winding. Simultaneously leakage current loop is formed from one of bearings to rotor shaft of the electric motor and then through the second bearing is it closed at return to stator metal. According to the invention the formed leakage induction current cannot be looped through the above bearing in result of limitation of induction electromagnetic potential formed at stator metal by distribution at additional outer race, balls of auxiliary row and additional separator. Induced induction electromagnetic potential formed at rotor metal of the electric motor shall be limited by distribution at inner race and balls, and separator. At that the above potentials are not interlooped, they do not for, loops of induction leakage current as far as structure of outer race with a grove for rolling of balls of the auxiliary row is made of strong electrically insulated material. |
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Electrical machine comprises stator support housing, imbricated stator core of electrical steel with slots at its outer cylindrical surface with winding coils placed into the above grooves and fixed with slot wedges. Support housing is made as a cylindrical barrel with sidewall mid part provided with cylindrical ledge. Stator is placed inside cylindrical cavity of the rotor, which is mounted coaxially with stator cylindrical axis and can be rotated around it. Rotor body is made as two detached discs fixed by their edges and faced to each other with their cavities. Rotor comprises inductor coil. Inductor coil is comprised of magnet bar oriented along the rotor longitudinal axis magnetised in tangential opposite direction alternated with poles made as bars of material with high magnetic conductivity. Areas of the discs placed close to the rotor longitudinal axis are have bending made so that it can fix the outer bearing race, which inner race is installed at the area of support housing opposite the inner bearing race. |
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Invention relates to engine module including engine, heat exchanger and engine inverter. Engine module includes engine, heat exchanger and engine inverter. Heat exchanger is designed to cool both the engine and the inverter. Said heat exchange is arranged between said engine and said inverter. Note here that heat exchanger housing incorporates the inverter. For engine module cooling, the part of coolant is forced directly through heat exchanger inner space while another portion of coolant flows through engine inner space. Remaining portion of coolant flows through inerter inner space. |
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Electric energy production method in inductor generator with flexible stator During vehicle motion elements of its suspension move by reciprocating motion. At impact to plates 10, 11 at straight-line portions 4 and 5 by alternating force the latter start moving bending the stator in the arc 3 area making poles 8 and 9 approaching or removing from each other. Due to residual magnetic induction or due to permanent magnet in stator 1 magnetic field F is induced. When gap changes intensity of the magnetic field changes as well, either increasing or decreasing. It leads to change in induction and this in magnetic flux F. In compliance with Maxwell formula electromotive force is induced in armature winding 7, which comes after rectifier to the onboard network and accumulator may be used as such network. Due to generated electromotive force current appears in excitation winding 6, which leads to increase of magnetic flux in the stator. |
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Inductor-type electric generator with flexible stator Stator of magnetic system 1 is made of strips of a material having ferromagnetic properties, which are adjacent to each other with flat surfaces, like plates of a transformer. These strips can be made of thin, flexible, wide plates from springy steel used for example for production of plate springs. In their middle part the strips are bent in the form of arc 2 and can be bent in the area of this arc. On both sides of arc 2 there are straight-line sections 3, 4 equal as to length, which are a continued part of the above said arc. Strips are coated on both sides with electrically insulating varnish preventing occurrence of an electrical contact between them. Self-excitation winding 5 is arranged in straight-line section 3. In the opposite straight-line section 4 there arranged is winding of armature 6, which is intended for generation of electrical power at action on a magnetic system. |
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Method and processing line for electric power generation Invention is based on burning of combustible substance and generation of high-temperature combustion gases, magnetic conversion of high-temperature combustion gases into primary electricity, conversion of thermal energy of the residual low-temperature gases cooled during magnetic conversion into secondary electricity in the thermal power unit and the subsequent summation of primary and secondary electricity in a distributive station. |
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Inductive rotation angle converter Angle converter has a rotor, at least, with one magnetosoft pole and a stator comprising the multiphase winding located on its magnetic conductor, a single-phase ring winding, coaxial with a rotor, and the magnetic conductor for closing of the rotor magnetic circuit and the stator enclosing the stator windings. The magnetic conductor of the multiphase winding is designed as a ring. The second ring winding identical to the first one and opposite connected to it, is inserted additionally into the stator. Meanwhile both ring windings and the magnetic conductor for closing of the rotor magnetic circuit and the stator are located symmetrically with reference to the magnetic conductor of the multiphase winding. |
Another patent 2551199.