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This page is updated frequently with new Electrical Machine-related patent applications. Subscribe to the Electrical Machine RSS feed to automatically get the update: related Electrical RSS feeds. RSS updates for this page: Electrical Machine RSS RSS


Cooling system and cooling method for cooling rotating electrical machine

Vehicle drive device

Torque tool with synchronous reluctance motor

Date/App# patent app List of recent Electrical Machine-related patents
08/21/14
20140232304
 Rotary electrical machine control device patent thumbnailRotary electrical machine control device
Regenerated power fed from a rotary electric machine is immediately reduced where connection between an electric machine and a dc power source is blocked. An inverter control section controls the inverter by controlling an armature current in a two-axis orthogonal coordinate system that rotates in synchronization with the rotary electric machine, the armature current being a vector obtained by synthesizing a field current and a drive current extending along respective axes of the orthogonal coordinate system.
08/21/14
20140232218
 Cooling system and cooling method for cooling rotating electrical machine patent thumbnailCooling system and cooling method for cooling rotating electrical machine
A cooling system and a cooling method, capable of reducing a temperature gradient of a rotating electrical machine by means of a simple structure, in relation to both axial and circumferential directions thereof. The cooling system has a coolant conveying device such as a pump, and a coolant cooling device such as a heat pump.
08/21/14
20140231174
 Vehicle drive device patent thumbnailVehicle drive device
A vehicle drive device having a rotating electrical machine, a speed change mechanism, and a case that accommodates the rotating electrical machine speed change mechanism. A first oil storage portion is provided so as to communicate with the speed change mechanism accommodating space.
08/21/14
20140231116
 Torque tool with synchronous reluctance motor patent thumbnailTorque tool with synchronous reluctance motor
There is described a torque tool comprising a synchronous reluctance motor. The torque tool comprises an electrical machine drive system, an electronic controller and a gear system.
08/14/14
20140225535
 Rotating electrical machine drive system patent thumbnailRotating electrical machine drive system
In a system for driving a three-phase rotating electrical machine of drive sources for applying separate drive forces to a rotary shaft, a phase of the rotating electrical machine, a current of which is detected by a current sensor and capable of being used for control of the rotating electrical machine, is defined as an effective sensor-phase of the rotating electrical machine. When the number of the effective sensor-phases is one, the rotating electrical machine is driven in a one-phase control mode based on the current of the effective sensor-phase under a condition where a rotation speed of the rotating electrical machine is greater than a predetermined positive threshold, and driven by the drive forces of the other drive sources under a condition where the rotation speed is not greater than the threshold..
08/07/14
20140221143
 Hybrid powertrain unit for motor vehicles patent thumbnailHybrid powertrain unit for motor vehicles
A hybrid powertrain unit includes an internal-combustion engine, and a gearbox device with a primary shaft that can be connected to the shaft of the internal-combustion engine via a clutch device. The gearbox device includes a secondary shaft with an output pinion meshing with a first crown wheel of a differential, the casing of which is rigidly connected to the casing of the gearbox device.
08/07/14
20140217859
 Permanent magnet type rotating electrical machine and vehicle using the electrical machine patent thumbnailPermanent magnet type rotating electrical machine and vehicle using the electrical machine
Permanent magnet type rotating electrical machine with rotor core including a plurality of magnet insertion holes, each having a substantially rectangular cross section, for each magnetic pole. A nonmagnetic section is formed at both ends of the magnet insertion hole in a circumferential direction.
08/07/14
20140217844
 Electrical machines and methods of assembling the same patent thumbnailElectrical machines and methods of assembling the same
A housing for coupling to a motor having an axis of rotation is provided. The housing includes an end cap having an outer surface and an inner surface.
08/07/14
20140217817
 Control device for a dc-to-dc converter of an electrical drive system, and a method for operating a dc-to-dc converter patent thumbnailControl device for a dc-to-dc converter of an electrical drive system, and a method for operating a dc-to-dc converter
The invention relates to an electrical drive system of a hybrid vehicle, comprising: a traction battery (1), a high-voltage intermediate circuit (2), a pulse-controlled inverter (3) which is coupled to the high voltage intermediate circuit (2), an electrical machine (5) which is coupled to the pulse-controlled inverter (3); a dc-to-dc converter (6) which is coupled to the pulse-controlled inverter (3) and the high-voltage intermediate circuit (2) and is designed to convert a high voltage (ue) from the high-voltage intermediate circuit (2) into a low voltage (ua) for a vehicle electrical system; a low-voltage battery (8) which is coupled to the dc-to-dc converter (6); a plurality of selectively-connectable electrical consumers (9a, 9b) of the vehicle electrical system, which are coupled to the low-voltage battery (8) and the dc-to-dc converter (6); and a control device (7) which, in the event of a traction battery failure, is designed to operate the dc-to-dc converter (6) in a current-controlled manner using the electrical machine so as to supply said vehicle electrical system consumers (9a, 9b).. .
07/31/14
20140210304
 Stator for rotating electrical machine patent thumbnailStator for rotating electrical machine
A stator includes an annular stator core, a stator winding, and an insulating sheet member. In the stator core, slots are circumferentially arrayed.
07/31/14
20140210293
Permanent magnet embedded type rotor for rotating electrical machine and rotating electrical machine having permanent magnet embedded type rotor
A permanent magnet embedded type rotating electrical machine includes a rotor includes a rotor core formed by a plurality of laminated magnetic steel plates and a plurality of permanent magnets and a stator. Each magnetic steel plate has a plurality of pairs of magnet holes, pairs of joining portions and peninsula portions.
07/24/14
20140203673
Liquid cooled electrical machine
Flow control apparatus for an electrical machine and comprising an arrangement of shaped chambers and passages for conveying a liquid coolant. The rate of heat transfer from certain portions of the machine to the coolant is determined by the varying velocity of the liquid through the chambers, resulting in a generally uniform cooling of those portions of the machine..
07/24/14
20140203672
Rotating electrical machine for vehicle
A rotating electrical machine for a vehicle includes a protective cover including a protruding portion projected to an opening side from a circumferential edge portion of a through hole formed in a bottom portion, a stud bolt that is inserted into the through hole to fix a rectifier to a portion of a casing at a position on one side in an axial direction, a mold resin including a projecting portion projected toward the protective cover, for electrically insulating the rectifier and the stud bolt from each other, and a fitting fixed to an extending portion of the stud bolt that extends from the through hole. A harness clamp is held by the fitting, and the projecting portion and the protruding portion are arranged at a position so that the projecting portion and the protruding portion are overlapped with each other in the axial direction of the stud bolt..
07/24/14
20140203631
Baie modulaire d'onduleurs et son procede de pilotage pour un ensemble de machines electriques munies de capteurs de position
A modular rack intended for an aircraft comprising a set of electrical machines each equipped with a position sensor comprises: a number of inverters, a supervision member, a first communication channel, making it possible to transmit to each of the inverters the inverter setpoint determined by the supervision member, and a second communication channel making it possible to transmit a position information item to each of the inverters, each of the inverters comprising means for generating a power electrical signal as a function of the inverter setpoint and of the position information transmitted by the supervision member. Advantageously, the first and second communication channels consist of a single link linking the supervision member and the inverters, and transmitting both the inverter setpoints and the position information items..
07/24/14
20140201979
Manufacturing device and manufacturing method for stator of rotating electrical machine
A manufacturing device for a stator of a rotating electrical machine includes a jig, a support section, link mechanisms and press sections. The jig has holding grooves into which linear portions of coils can be respectively inserted.
07/17/14
20140200111
Hybrid vehicle control apparatus
A hybrid vehicle control apparatus (100) is provided with: a first replacement controlling device which replaces regenerative braking torque of the rotating electrical machine by engagement torque of the clutch if probability of starting an internal combustion engine is high on demand of changing a connection state between a rotating electrical machine and a transmission mechanism in regenerative braking by the regenerative braking torque of the rotating electrical machine; and a second replacement controlling device which replaces the regenerative braking torque by friction braking torque if the start probability is low on the change demand.. .
07/17/14
20140197708
Rotating electrical machine
A rotating electrical machine comprising an armature; a yoke; and a plurality of magnets arrayed in a ring shape along an inner peripheral face of the yoke. The magnets are respectively formed in circular arc shapes fit with the inner peripheral face of the yoke, and are fixed to the yoke.
07/10/14
20140195085
Mobile working machine
A mobile working machine includes an energy source (101), a storage circuit (103) for storing electrical energy, a first electronic power converter stage (104) between the storage circuit and the energy source, an electrical machine (106) for driving actuators, a second electronic power converter stage (107) between the storage circuit and the electrical machine, and a control system (108) for controlling the first electronic power converter stage responsive to the power taken by the second electronic power converter stage from the storage circuit, the control system providing a control signal path from the storage circuit to the first electronic power converter stage. The signal processing properties of the control signal path are dependent on the electrical energy stored by the storage circuit in order to allow the electrical energy to vary, but within desired limits, so as to reduce the peak power taken from the energy source..
07/10/14
20140191700
Operating state circuit for inverter and method for setting operating states of an inverter
The invention relates to an operating state circuit for actuating an inverter (3), which supplies an n-phase electrical machine (5) with an n-phase supply voltage via phase connections (4a, 4b, 4c), wherein n≧1, comprising an evaluation device (6) which is connected to the phase connections (4a, 4b, 4c) of the inverter (3) and which is configured to detect output voltages of the inverter (3) to the phase connections (4a, 4b, 4c) and to determine a speed of the electrical machine (5) on the basis of the detected output voltages, and an actuating device (7) which is coupled to the evaluation device (6) and which is configured to switch to an idle state or an active short-circuit in dependence on the determined speed of the inverter (3).. .
07/10/14
20140191624
Electric motor/generator
Certain embodiments are directed to devices, methods, and/or systems that use electrical machines. For example, certain embodiments are directed to an electrical machine comprising: at least one stator at least one module, the at least one module comprising at least one electromagnetic coil and at least one switch, the at least one module being attached to the at least one stator; at least one rotor with a plurality of magnets attached to the at least one rotor, wherein the at least one module is in spaced relation to the plurality of the magnets; and the at least one rotor being in a rotational relationship with the at least one stator, wherein the quantity and configuration of the at least one module in the electrical machine is determined based in part on one or more operating parameters; wherein the at least one module is capable of being independently controlled; and wherein the at least one module is capable of being reconfigured based at least in part on one or more of the following: at least one operating parameter during operation, at least one performance parameter during operation, or combinations thereof.
07/03/14
20140184011
Stator for rotating electrical machine and rotating electrical machine
A stator for a rotating electrical machine includes a stator core including a plurality of slots arrayed in a circumferential direction and a stator winding formed of a conductor having a rectangular cross section and an insulation coating. The stator winding is configured to be inserted in the slot.
07/03/14
20140184007
Rotor for an electrical machine
A rotor that includes a rotor core assembly secured to a shaft. The rotor core assembly includes a magnet and an end cap secured to an end of the magnet.
07/03/14
20140183125
Liquid absorber, liquid absorption tank, and electrical machine
To provide a liquid absorber having excellent permeability and retention properties, a liquid absorber is for absorbing a liquid, wherein the liquid absorber is principally made of a fiber and also includes additives having a greater critical surface tension than the critical surface tension of the fiber.. .
06/26/14
20140175937
Phase separators for electrical machines
A phase separator for an electrical machine includes a first end portion, a second end portion, and a midsection. The midsection connects the first end portion to the second end portion such that the first end portion opposes the second end portion.
06/26/14
20140175930
Permanent magnet embedded type rotating electrical machine
A permanent magnet embedded type rotating electrical machine includes a rotor and a stator. The rotor includes a rotor core formed by a plurality of stacked and laminated magnetic steel plates and permanent magnets.
06/26/14
20140175920
Rotating electrical machine for vehicles with liquid cooling
An embodiment of a rotating electrical machine has: a shaft rotatably mounted to rotate around a central rotation axis; a rotor carried by the shaft; a stator which supports stator windings and is arranged around the rotor to enclose the rotor therein; a cylindrical casing which encloses the stator therein; and a cooling circuit which is intended for the circulation of a cooling fluid, is obtained at the casing, has a single common inlet opening for the cooling fluid axially arranged in the centre of a lateral wall of the casing, and two helicoidal paths, each of which is a mirror-image twin of the other one, centrally originates from the common inlet opening and extends from the centre of the casing towards a corresponding end of the casing.. .
06/26/14
20140175919
Rotating electrical machine and housing for rotating electrical machine
A housing of a rotating electrical machine includes: a plurality of heat exchangers attached to an outer surface of the housing to cool a gas circulating in the housing; and a first partition wall portion disposed in an interior of the housing to partition the interior of the housing.. .
06/19/14
20140171248
Gear-change device for a motor vehicle
A gear-change device includes a primary shaft, a secondary shaft, and a third shaft, which bears both a gear of the reverse and an output pinion meshing with a gear of a differential. The third shaft is connected via a gear reducer to the shaft of an electrical machine, the casing of which is rigidly connected to the easing of the gear-change device..
06/19/14
20140170878
Housing for an electrical machine comprising a seal
A housing for an electrical machine includes a cover with an electrical plug connection. The plug connection includes at least one electrically conductive contact or a plurality of electrically conductive contacts configured to electrically connect the housing to a plug.
06/19/14
20140167654
Circuit arrangements and methods for operating an electrical machine
A circuit arrangement is described comprising a first battery; a second battery; an electrical machine connected between the first battery and the second battery wherein the electrical machine is connected to the first battery via a first switching arrangement and the electrical machine is connected to the second battery via a second switching arrangement and a controller configured to control the first switching arrangement and the second switching arrangement such that a current that has a dc component flows through the electrical machine.. .
06/19/14
20140167515
Energy storage device, system with energy storage device and method for generating a supply voltage of an enegry storage device
The invention relates to an energy storage device (1) for generating an n-phase supply voltage for an electrical machine (2), where n≧1, or for an inverter, with n energy supply branches connected in parallel, each of which can be connected to one of n phase lines (2a, 2b, 2c), each of the energy supply branches comprising a plurality of series-connected energy storage modules (1a, 1b), each comprising: an energy storage cell module (5, 7) and a coupling device (3) configured to selectively connect the energy storage cell module (5, 7) into the respective energy supply branch or to bypass said module, the energy storage cell modules (7) of respective first energy storage modules (1b) of an energy supply branch each comprising at least one first energy storage cell (7a), the energy storage cell modules (5) of respective second energy storage modules (1a) of an energy supply branch each comprising at least one second energy storage cell (5a), and the first energy storage cells (7a) having a lower internal resistance (ri) than the second energy storage cells (5a) below a predetermined temperature threshold.. .
06/19/14
20140165780
Hybrid transmission for a motor vehicle, and control method
A hybrid transmission for a motor vehicle including a heat engine and a driving electrical machine, including two concentric primary shafts, each of which includes at least one intermediate drive on a secondary shaft connected to wheels of the vehicle. The transmission includes a first mechanism for coupling the two primary shafts together, and capable of assuming at least three positions, of positions in which: the heat engine is separated from the drive train connecting the electrical machine to the wheels; the heat engine drives the wheels with or without the assistance of the electrical machine; and the heat engine and the electrical machine are coupled together to add respective torques thereof to the wheels..
06/12/14
20140159754
Estimation of resistance in electrical machines
In an electrical machine which has unidirectional excitation applied to its windings, the mean values of voltage and current can be computed from the instantaneous phase voltage and current by the use of, for example, low-pass filters (in either the analogue or digital domain). The value of winding resistance can then be calculated by dividing the mean voltage by the mean current.
06/12/14
20140159630
Converter for an electrical machine and method for controlling a power circuit breaker
The present invention specifies a converter for an electrical machine. A power circuit breaker (t1) comprises at least two semiconductor elements (9, 10) connected to one another to form said power circuit breaker.
06/12/14
20140159617
Method and apparatus for adapting commutation for an electronically commutated electrical machine
A method for controlling a position of an actuating element, to which a restoring force is applied, in an actuator system having an electronically commutated electrical machine, includes controlling the position of the actuating element as a function of a predefined setpoint position specification and an actual position specification. A position control unit provides an actuating variable which is associated with a space vector with which a stator arrangement of the electrical machine can be driven.
06/12/14
20140159539
Rotating electrical machine for vehicle
A rotating electrical machine including a stator core formed by layering electromagnetic steel sheets, a first insulator and a second insulator facing with each other and fitted to the stator from an axial direction of the stator core, and a coil winding formed by resin molding and wound around the first and the second insulators. The first insulator includes a first end portion and a first side wall portion and the second insulator includes a second end portion and a second side wall portion.
06/12/14
20140159538
Coil wire for rotating electrical machine and coil body
A coil wire for a rotating electrical machine forms a coil body wound on teeth of a stator for the rotating electrical machine and includes an element wire assembly and a covering member. The element wire assembly has a plurality of element wires coated with insulation and bound together.
06/12/14
20140159524
Auto centering fitting system for the assembly of rotating electrical machines and rotating electrical machines using the same
The present invention discloses an auto centering fitting system for the assembly of rotating electrical machines, comprising a couple of caps (1a) and (1b), wherein said cap (1b) shows a cylindrical geometry, optionally interrupted, comprising a strengthened peripheral region (3b) from which a male-type structure (6) complementary to the channel (4) of the cap (1a) extends longitudinally; and said cap (1a) shows a strengthened region (3a), from which a pair of symmetrical tabs (3c) project distally, which will define a fitting channel (4), forming a junction (5) through the application of axial pressure on both caps in opposite directions to each other, allowing for the fitting of (6) to (4).. .
06/05/14
20140153142
Ground fault protection
A robust ground-fault protection system is disclosed which can possess a reduced sensitivity to system noise. In a ground-fault protection system for an electrical machine such as a generator, an injection signal with an injection frequency fi is applied to the electrical machine in order to generate a periodic bias voltage on a conductor of the electrical machine, and a response signal thereto is evaluated.
06/05/14
20140152093
Method for operating an electrical system, and apparatus for controlling an electrical system
The present invention relates to a method (50) for operating an electrical system (44), particularly in a motor vehicle (10), wherein the electrical system (44) has at least two electrical machines (14, 34) which are connected to the electrical system (44) via one controllable inverter (32, 42) each, wherein a regulated generator mode for a first instance of the electrical machines (14, 34) is initiated (60), characterized in that a first step (54) involves detection of a drop below a first prescribable voltage value for the electrical voltage available in the electrical system (44), and then a second step (56), on the basis of an induced freewheeling voltage that is to be expected for one of the electrical machines (14, 32), involves one of the inverters (32, 42) being selected, which is associated with an electrical machine (14, 32), and being actuated such that the electrical machine (14, 34) connected thereto is operated in electrical freewheel, with the result that the rotation of said machine causes it to induce a freewheeling voltage which is applied in the electrical system (44), and then a third step (58) involves detection of the rise above a second prescribable voltage value for the induced electrical freewheeling voltage available in the electrical system (44), and then a fourth step (60) involves the inverter (32, 42) of the first electrical machine (14, 34) being actuated such that the first electrical machine (14, 34) connected thereto is operated in regulated generator mode.. .
06/05/14
20140152025
System for harvesting energy including a counterweight and a system for controlling the angular position of the counterweight
A system for harvesting energy including: an electrical machine including a first and a second structure, movable with respect to each other; a counterweight coupled to the second structure; a power transfer structure, electrically connected between the first structure and the load; an angular position sensor which provides a position signal ({right arrow over (ε)}(t)) indicating the angular position of the counterweight; and an accelerometer which provides an acceleration signal ({right arrow over (a)}(t)) indicating an acceleration which affects the first structure. The system for harvesting energy further comprising a control unit, which includes: a first stage which generates a limit position signal ({right arrow over (ε)}lim(t)) indicating an angular instability region (r-i); and a second stage which controls the power transfer structure based on the position signal and on the limit position signal, so as to modulate the transfer of electrical power to the load so as to prevent the counterweight from entering into the angular instability region..
05/29/14
20140145660
Rotating electrical machine control device
A rotating electrical machine control device that applies a high frequency current to a rotating electrical machine including a rotor having saliency, estimates a magnetic pole direction of the rotor on the basis of a high frequency component contained in a voltage command as a response component to the high frequency current, and controls the rotating electrical machine. A high frequency superimposing section sets an estimated d-q axis rotating coordinate system, and a magnetic pole direction adjusting section sets a high frequency coordinate system having a phase difference of the high frequency current command with respect to the estimated d-q axis rotating coordinate system.
05/29/14
20140145655
Self-commissioning procedure for inductance estimation in an electrical machine
A method of estimating inductances and flux linkages of an electrical machine supplied with drive currents via current regulators. Drive current values are measured and fed back to the regulators for closed-loop control.
05/29/14
20140145546
Electrical conductors and related devices
A method of spacing a plurality of electrical conductors for carrying electrical current in an electrical machine may include positioning between the electrical conductors an uncured spacer body. The uncured spacer body may include a curable material, and an activatable heat generating material mixed with the curable material.
05/29/14
20140145543
Electrical machines
An electrical machine (10) has three phase windings (12). Each phase winding (12) is connected to a respective current source (18).
05/29/14
20140145528
Axial flux electrical machines
An axial flux electrical machine comprises a substantially sealed housing (10) defining a fluid flow path (20), a heat exchanger (22) for transferring heat energy from a fluid flowing in the fluid flow path to another fluid, a stator (16) located within the housing (10), a rotatable shaft (12), a rotor (18) located within the housing (10) on the shaft (12) adjacent the stator (16) and rotatable with respect to the stator (16), wherein the fluid flow path extends between the stator (16) and the rotor (18).. .
05/29/14
20140145526
Rotating electrical machine
A rotating electrical machine includes: a case; a rotor; a stator; a control portion including a field circuit portion used to supply a current to a control circuit and the field winding; a power circuit portion controlling a stator current; a heat sink installed so as to cool the control portion and the power circuit portion; a first waterproof portion providing waterproofing to signal terminals of the power circuit portion and the field circuit portion; a second waterproof portion provided with through-holes from which a part of the control portion and the power circuit portion is exposed and providing waterproofing between the control portion as well as the power circuit portion and the heat sink; and insulation portions installed in the through-holes of the second waterproof portion and isolating the control portion and the power circuit portion from the heat sink.. .
05/22/14
20140142782
Evaluation of resolver sensor signals
Circuit (2) for evaluating resolver sensor signals (28) in a vehicle, having a resolver sensor (4), set up to pick up a rotary movement of a rotor (6) in an electrical machine (16), and a processor element (12), wherein the resolver sensor (4) is set up to output at least one sinusoidal or cosinusoidal amplitude-modulated analogue signal that is characteristic of the rotary movement of the rotor (6), characterized in that the processor element (12) has a data processing unit (12a), a resolver sensor actuation unit (12b) and a resolver sensor evaluation unit (12c), wherein the analogue signal from the resolver sensor (4) is connected directly to the resolver sensor evaluation unit (12c).. .
05/22/14
20140141254
Self-repairing laminated structure and self-fusing insulated wire
Provided is a laminated structure having excellent self-repairing performance, which can be prepared by an inexpensive and simple method; also provided are a self-bonding insulated wire and electrical machine using the same. A self-repairing laminated structure in which a self-repairing resin layer is formed on a base material and a thermosetting resin topcoat is formed on an outer layer thereof is characterized in that the self-repairing resin layer includes an uncured cross-linkable or curable thermoplastic resin, and the thermosetting resin topcoat includes a cross-linking agent, curing agent, or curing catalyst of the cross-linkable thermoplastic resin..
05/22/14
20140139195
Voltage regulator device
A voltage regulator device (10) is described, applicable to the electrical system of a motor vehicle of the type comprising at least an electrical machine consisting of a three-phase generator and at least an accumulator (12). The voltage regulator device (10) comprises a rectifier bridge and a voltage rising circuit (16) provided with a first series of power elements (20).
05/22/14
20140139059
Rotating electric machine and related packaging method
Described is a rotating electrical machine integrating an electronic module comprising a printed circuit, a plurality of electronic power and signal components positioned on the components side of the printed circuit, a plurality of conductor tracks, positioned on the welding side opposite the components side of the printed circuit, which implement the direct electrical connections between the electronic power components; the electronic power and signal components are in contact through a filler with the cap of the electrical machine for allowing an optimum dispersal of the heat generated by them, the contact being guaranteed by elastic elements which press on a support in which the electronic module is housed.. .
05/15/14
20140132125
Electrical machine comprising a safety circuit
The invention relates to an electrically excited machine (2), in particular for use in a steering system of a motor vehicle, comprising: a stator with a stator winding having multiple phases; an exciter winding (3) which is arranged so as to couple an excitation magnetic field into a rotor that is movably disposed relative to the rotor so that a magnetic field is generated in an air gap between the stator and the rotor; and an exciting circuit having a fuse (11) which is automatically triggered in the event of an overcurrent.. .
05/15/14
20140132109
Rotating electrical machine having a segmented stator
A rotating electrical machine comprises a rotor having an axis of rotation and a stator assembly surrounding the rotor. The stator assembly comprises a plurality of circumferentially arranged stator segments and a plurality of link elements of which at least one link element extends between each of the circumferentially adjacent stator segments.
05/15/14
20140132107
Method and apparatus for producing cores for electrical machines
There is described a method and apparatus for forming a core for an electrical machine, in which a stamped metal strip (4a, 4b) is wound onto a mandrel (22), to form a helical winding. The diameter of the mandrel is then increased to apply tension to the wound strip, while the coils of the wound strip are held between clamps (24, 25).
05/15/14
20140132092
Rotating electrical machine
A rotating electrical machine having high efficiency and torque, in which the stator is provided with a stator core including an annular yoke portion and n winding poles radially extending from the annular yoke portion, the rotor core includes a circumference portion having small teeth substantially in parallel with the rotary shaft, and an end surface portion having small teeth substantially perpendicular to the rotary shaft, the circumference portion of the winding pole in the stator and the circumference portion of the rotor core in the rotor face each other via an air gap to provide a radial gap, and the end surface portion of the winding pole in the stator and the end surface portion of the rotor core in the rotor face each other via an air gap to provide an axial gap, and n is an integer of 2 or more.. .
05/08/14
20140128214
Powertrain for a vehicle and method for controlling a powertrain
A propulsion device (2) for a vehicle including an output shaft (14) of a combustion engine (4), an input shaft (27) of a gearbox (8), an electrical machine (6) having a stator (24) and a rotor (26), and a planetary gear (10) including movable components (18, 20, 22). A locking sleeve (38) is movable between first and second positions.
05/08/14
20140128193
Method and device for regenerative braking for a vehicle
A regenerative brake device for a vehicle includes an output shaft (14) of a combustion engine (4), an input shaft (27) of a gearbox (8), an electrical machine (6) having a stator (24) and a rotor (26), and a planetary gear (10) which comprises a sunwheel (18), a ring gear (20) and a planet wheel carrier (22). The engine output shaft (14) is disconnectably connectable to the planetary gear (10) by a movable piston (16) which in a first position connects the engine output shaft (14) to the planetary gear (10) and in a second position disconnects the gearbox input shaft from the planetary gear.
05/08/14
20140125268
Method and device for operating an electrical machine having separate excitation
A method and a device for operating an electrical machine having separate excitation, especially a synchronous machine. With the aid of a sensor system, a variable characterizing a rotor temperature and/or a stator temperature are/is determined, and an excitation current and stator currents for the electrical machine are specified by a control unit as a function of the variable characterizing the rotor temperature and/or the stator temperature, at least in specifiable operating ranges..
05/08/14
20140125171
Apparatus for kinetic energy storage
An apparatus for kinetic energy storage includes an electrical machine operable at least in one of motor mode and generator mode, and at least one energy recovery system for an intermediate storage of a produced kinetic energy and which converts the kinetic energy into an electrical energy, with, the at least one energy recovery system having at least one flywheel body formed as a rotor, and a stator and with at least one of the rotor and the stator being formed as at least one vacuum pump stage.. .
05/08/14
20140125166
Rotating electrical machine
The disclosure discloses a rotating electrical machine including a stator and a rotor that are arranged facing each other via a magnetic air gap, an output shaft that is coupled to the rotor and is rotatably arranged by at least one bearing, and a fan that is coupled to the output shaft. The fan includes a disc portion configured to cover an end portion of the stator in an axial direction, and a plurality of blade portions that is provided on the stator side of the disc portion so as to protrude towards the stator..
05/08/14
20140125064
Rotor bearing for an electrical machine
A disk armature generator for generating electrical energy from rotational energy of a wind power installation and comprising at least two stator components mutually offset axially along a generally horizontal rotation axis of the disk armature, and comprising, mounted therebetween so as to rotate about the rotation axis, at least one ring- or disk-shaped rotor component of the disk armature, and comprising an input-side connection for a gearbox wherein the sun gear thereof, which extends coaxially with the rotation axis of the disk armature, is coupled to at least one ring- or disk-shaped rotor component of the disk armature, wherein a rolling bearing associated with a ring- or disk-shaped rotor component of the disk armature is configured as a selected one of an angular contact ball bearing and angular contact ball bearings, having a contact angle of between 40° and 50° relative to the rotation axis, comprising a double-row angular contact ball bearing in an o arrangement.. .
05/01/14
20140121054
Powertrain for a vehicle and method for controlling a powertrain
A propulsion device (2) for a vehicle includes an output shaft (14) of a combustion engine (4), an input shaft (27) of a gearbox (8), an electrical machine (6) having a stator (24) and a rotor (26), and a planetary gear (10) movable components (18, 20, 22). A locking mechanism (38) is movable between a first position wherein the engine output shaft (14) and the gearbox input shaft (27) are allowed to rotate at different speeds via the planetary gear (10), and a second position wherein the locking mechanism (38) firmly connects the engine output shaft (14) to the gearbox input shaft (27) via the planetary gear (10).
05/01/14
20140118865
Disconnection detecting device for rotating electrical machine, method for detecting disconnection of rotating electrical machine
A disconnection detecting device that can be applied to a control system of a motor-generator is provided. A disconnection detecting section judges whether logical conjunction (i.e.
05/01/14
20140118746
Equipment and method for diagnosing sliding condition of rotating electrical machine
Disclosed are equipment and method for diagnosing the sliding condition of a rotating electrical machine that make it possible to achieve early detection of abnormal sliding with a simple configuration containing flexibly arranged elements and reduce the downtime and maintenance cost of the rotating electrical machine. The equipment for diagnosing the sliding condition of a rotating electrical machine includes a light source that emits light onto the sliding surface of a collecting brush relative to the surface of a rotating body of the rotating electrical machine, a light-receiving section that receives the light reflected from the sliding surface, and a determination section that processes a signal from the light-receiving section.
05/01/14
20140117794
Cooling assembly for electrical machines and methods of assembling the same
An assembly for cooling an electrical coil winding having a first coil, a second coil, a first end turn and a second end turn is provided. The assembly includes a supply header; a return header; and a plurality of flow members coupled in flow communication to the supply header and the return header.
05/01/14
20140117790
Rotating electrical machine
An electrical machine having high torque and reliability and low cost, has a stator and rotor facing each other via an air gap, and a bracket at each of both shaft-direction end surfaces of the stator and rotor. The stator core is formed of a dust core, and a stator side guide portion projecting in the shaft direction concentrically with an inner peripheral portion of the stator, is provided on each of both side surface portions of the stator core, a bracket side guide portion, which is fitted to the stator side guide portion, is provided at each of the brackets, and the air gap is secured by making the stator side guide portion fitted to the bracket side guide portion..
05/01/14
20140116201
Drive train of a motor vehicle that can be driven in a purely electric manner
A drive train (6) is provided for a motor vehicle which can be driven in a purely electric manner. A gear mechanism (7, 15) has a standardized housing (8) for accommodating an electrical machine (16) or two electrical machines (10, 11) and for accommodating two gear mechanism output shafts (9) which are associated with a vehicle axle (2, 4).
04/24/14
20140112037
Electronic power circuit, electric motor, and procedure for checking the operability of an electronic power circuit
An electronic power circuit, electrical machine and a method for verifying the functionality of an electronic power circuit. The invention relates to an electronic power circuit, an electrical machine with the electronic power circuit and a method for verifying the functionality of the electronic power circuit.
04/24/14
20140111053
Rotating electrical machine
The disclosure discloses a rotating electrical machine including a stator and a rotor. The rotor includes a cylindrical iron core that is fixed to a shaft and comprises a radial direction and an axial direction, a plurality of permanent magnets that is embedded in the iron core, a plurality of air gaps that are respectively provided in a portion on an inner side of the iron core in the radial direction, a wedge portion that is provided along the axial direction so as to protrude within the air gap, and a non-magnetic reinforcing member that is filled in the air gap..
04/24/14
20140111043
Thin-walled housing having force transmission elements that guide cooling fluid
A double-walled cooling housing (1) for an electrical machine (13). The cooling housing (1) comprises an inner housing (3), an outer housing (5) and a force transmission element (7).
04/24/14
20140109679
Method for identifying a fault in an electrical machine
For identifying a fault in an electrical machine vibration is measured in a plurality of radial directions of the stator. On the basis of the vibration measurements a vibration frequency and a mode shape of the vibration at this frequency is determined.


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Electrical Machine topics: Electrical Machine, Stator Core, Liquid Cooling, Lock Assembly, Wind Turbine, Longitudinal Axis, Secondary Structure, Machine Element, Flow Control, Magnetic Field, Magnetic Pole Position, Internal Combustion Engine, Radial Direction, Longitudinal Direction, Combustion

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