WO2015031878A1 - Système de commande pour transformation d'énergie dans une machine électrique - Google Patents

Système de commande pour transformation d'énergie dans une machine électrique Download PDF

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Publication number
WO2015031878A1
WO2015031878A1 PCT/US2014/053633 US2014053633W WO2015031878A1 WO 2015031878 A1 WO2015031878 A1 WO 2015031878A1 US 2014053633 W US2014053633 W US 2014053633W WO 2015031878 A1 WO2015031878 A1 WO 2015031878A1
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WO
WIPO (PCT)
Prior art keywords
coils
magnetic field
rotor
high intensity
coil
Prior art date
Application number
PCT/US2014/053633
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English (en)
Inventor
Norbert H. Wank
Original Assignee
Infinirel Corporation
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Publication date
Application filed by Infinirel Corporation filed Critical Infinirel Corporation
Publication of WO2015031878A1 publication Critical patent/WO2015031878A1/fr

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Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K3/00—Details of windings
    • H02K3/04—Windings characterised by the conductor shape, form or construction, e.g. with bar conductors
    • H02K3/28—Layout of windings or of connections between windings
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K11/00—Structural association of dynamo-electric machines with electric components or with devices for shielding, monitoring or protection
    • H02K11/30—Structural association with control circuits or drive circuits
    • H02K11/33—Drive circuits, e.g. power electronics
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
    • H02P25/00—Arrangements or methods for the control of AC motors characterised by the kind of AC motor or by structural details
    • H02P25/16—Arrangements or methods for the control of AC motors characterised by the kind of AC motor or by structural details characterised by the circuit arrangement or by the kind of wiring
    • H02P25/22—Multiple windings; Windings for more than three phases
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K2213/00—Specific aspects, not otherwise provided for and not covered by codes H02K2201/00 - H02K2211/00
    • H02K2213/12—Machines characterised by the modularity of some components

Definitions

  • the present disclosure relates generally to electrical machines, such as motors, generators, etc. and, in
  • electromagnetic coils in an electrical machine such as a Lorentz type motor or generator, thereby improving an efficiency of converting from electrical to kinetic energy, and/or from kinetic to electrical energy.
  • SRM reluctance motors
  • an electrical machine may include a stator and a rotor, each with multiple segments, and the rotor rotates relative to the stator.
  • Multiple electromagnetic coils may be selectively connected, via multiple coil controllers, to one or more power buses.
  • a master controller may be connected to the multiple coil controllers by a
  • a system for controlling multiple electromagnetic coils may include multiple coil controllers, a master controller that transfers control and status signals to and from the coil controllers.
  • the control signals may indicate a rotational direction of a rotor.
  • a communication network may be operatively connected to the master controller and the coil controllers. Power switches may selectively increase current flow in some of the coils by selectively connecting the coils to a power bus.
  • a system for controlling multiple coils may include a rotor that rotates relative to a stator, multiple coil controllers, a master controller that transfers control signals to and from the coil controllers, and at least one serial communication network operatively connected to the power and coil
  • Power switches may selectively connect some of the coils to a power bus, where information transferred between the controllers may indicate an azimuthal
  • a method for controlling multiple electromagnetic coils may include generating a magnetic field around a rotor by positioning multiple magnetic devices on the rotor, where the magnetic field includes a high intensity region that is oriented in a predetermined azimuthal orientation relative to a rotational axis of the rotor.
  • FIGS, la-lc are representative block diagrams of an electrical machine which may benefit from the principles of the present disclosure.
  • FIG. 2 is a representative block diagram of a control system for energy conversion in the electrical machine of FIGS, la-lc.
  • FIG. 3 is a table of logic signal relationships for the control system of FIG. 2 operating counterclockwise.
  • FIG. 4 is a table of logic signal relationships for the control system operating clockwise.
  • FIG. 5 is a representative schematic diagram of a coil controller of the control system.
  • FIG. 6 is a representative block diagram of a daisy- chain communication network of the control system.
  • FIG. 7 is a representative block diagram of a serial communication network of the control system.
  • the control system may control an electrical current associated with a series of coils that is currently exposed to a high intensity region of a magnetic field, where the magnetic field may be generated by magnetic components on a rotor or stator of the electrical machine.
  • the series may include a various number of coils, depending on the design, physical size, and power requirements.
  • control system may control a current associated with individual ones of multiple coils that are exposed to the high intensity region of the magnetic field, whether the coils are arranged in a series or not.
  • the high intensity region refers to a region of the magnetic field that has a higher concentration of magnetic flux lines than a region of the magnetic field that is outside of the high intensity region. In other words, this high intensity region is an area of high magnetic intensity in the magnetic field. This region may provide a
  • the low intensity regions generally are adjacent to high intensity regions, such that as the magnetic field is displaced past individual coils in the electric machine, the coils will alternatively experience a low intensity region followed by a high intensity region followed by a low intensity region, and so on.
  • This "edge” in the magnetic field that indicates a transition between low and high intensity regions, where a “leading edge” indicates a transition from a low to a high intensity region, and a “trailing edge” indicates a
  • Each coil in the electrical machine may be selectively enabled to allow increased electrical current flow in the coil during a time that the coil is entering a high
  • the coil may be enabled when the high intensity region at least partially overlaps the coil.
  • Each coil may also be selectively disabled to cause decreased electrical current flow in the coil when the coil is positioned outside the high intensity region. In other words, the coil may be disabled when the high
  • the coil be at least partially overlapped by the high intensity region to be enabled or that the coil is not overlapped by the high intensity region to be disabled. It is within the
  • the coil may be enabled prior to or after the high intensity region begins to overlap the coil, and/or that the coil is disabled prior to or after the coil is exiting the high intensity region.
  • the coils are selectively enabled and disabled to maximize energy transfer between the
  • the electrical machine is a motor
  • current may flow from one or more power buses to the coils to energize the coils, thereby selectively producing stronger magnetic fields in selected coils and driving the motor.
  • the electrical machine is a generator
  • current may be selectively generated in the coils when the magnetic field passes the coils, where kinetic energy (e.g. rotating shaft, reciprocating linear displacement, etc.) displaces the magnetic field relative to the coils, thereby generating current in selected ones of the coils and transferring the generated current to one or more power buses in the
  • the electrical machine that utilizes the control system of the present disclosure may be used for either motor or generator applications, by reprogramming the control system, but without physical changes to the mechanical structure of the electrical machine.
  • physical changes may be made to configure the electrical machine between a motor and a generator.
  • it may not be required to reprogram the control system to configure the electrical machine to be either a motor or a generator, since a power control program of the system may include separate functions needed to control the electrical machine as a motor or as a generator.
  • the power control program may automatically switch between the two configurations based on a logic indication the control system generates, a logic input from another controller, a logic input given by an operator, etc.
  • While some traditional controllers may be concerned with the current flow control of each phase or one winding at a time, based on a unique position of the rotor with respect to the stator, the present control system uses multiple relative positions of coil elements to a magnetic field produced by moving elements of the electrical machine. Any number of coils and apertures of a magnetic flux field may be supported by the present control system. While other control systems may rely on pulse-width modulation (PWM) schemes, which emit noise through electromagnetic interference (EMI) at high frequencies, the present control system that embodies principles of the present disclosure may operate as a state-machine only. However, the present control system may also accommodate low- frequency PWM schemes for current or speed control as desired, allowing a low PWM frequency to minimize switching losses and interference.
  • PWM pulse-width modulation
  • EMI electromagnetic interference
  • FIG. la Representatively illustrated in FIG. la is an
  • the electrical machine 100 which can benefit from the principles of this disclosure.
  • the electrical machine 100 may be configured to be either a motor or generator, or the machine 100 may be configured to switch between the motor and generator configurations.
  • the electrical machine 100 may include a motor control unit (MCU) 200 that may include a master controller 240 and multiple electromagnetic coil controllers, henceforth called coil controllers.
  • MCU motor control unit
  • the coil controllers 202, 204, 206 are shown in FIGS, la-lc, but the number of coil controllers are generally dependent upon the number of electromagnetic coils in the electrical machine. Therefore, there may be more or less coil controllers than the coil controllers 202, 204, 206 shown in FIGS, la-lc.
  • the electrical machine 100 may also include an energy conversion device 101 that converts kinetic energy to electrical energy and/or electrical energy to kinetic energy.
  • the energy conversion device 101 may include a rotor 102 and a stator 103, where the rotor rotates relative to the stator, and where the stator 103 generally remains stationary relative to the other components of the
  • the rotor 102 rotate relative to the stator 103.
  • the rotor 102 may instead displace linearly with respect the stator in keeping with the principles of this disclosure.
  • the energy conversion device 101 may include multiple electromagnetic coils 412, 414, 416, 418, henceforth called coils, which are shown in FIGS, la-lc. However, more coils may be included in the device 101, as is clearly shown in these figures. It will be appreciated that any number of coils may be included in the energy conversion device 101.
  • coils 412, 414, 416, 418 are arranged in a series configuration as shown in FIGS, la-lc. However, it is not a requirement that these coils be configured in a series configuration.
  • the coils 412, 414, 416, 418 may be arranged circumferentially, but not in series with each other. For example a pair of coils 412, 414 may be arranged in parallel to each other and another pair of coils 416, 418 may be arranged in parallel to each other with the two pairs arranged in series. Therefore, it is clearly understood that the coils in the conversion device 101 may be arranged in several configurations in keeping with the principles of the present disclosure.
  • the electrical machine 100 may include a power matrix, such as an array of power switches 300 (see FIG. 2) that may include power switches 302, 304, 306.
  • the array 300 may include more or less power switches than these shown in the figures in keeping with the principles of this disclosure .
  • the power switches 302, 304, 306 selectively connect and disconnect high and low terminals of at least one power bus across various ones of the coils 412, 414, 416, 418 as seen in FIGS, la-lc, via connection points 402, 404, 406, 408.
  • FIGS, la-lc show these connection points in a series configuration, where, when the high (positive "+") and low (negative "-") terminals of the power bus are connected to separate connection points 402, 404, 406, 408, two current paths are formed.
  • a first current path is carrying a greater amount of the current that is traveling between the high and low terminal connections, with a second current path carrying a lesser amount of the current that is
  • the first current path may be seen as the path from the low terminal "-" to the high terminal "+” that passes through coils 416, 414.
  • the second path may be seen as the path from the low terminal "-" to the high terminal "+” that passes through the remainder of the coils including coils 418, 412.
  • the configuration of the coils 412, 414, 416, 418 may be accomplished using coil configurations other than the series configuration shown in FIGS, la-lc.
  • the coils may be individually connected to the high and low terminals of the power bus, thereby restricting the current flow from the high to low terminals to only one coil or multiple coils. Therefore, the coils may be arranged and configured in various ways in keeping with the principles of this disclosure .
  • the coil controllers 202, 204, 206 may control the connections of the coils 412, 414, 416, 418 to the high and low terminals of one or more power buses via the selectable power switches 302, 304, 306. Referring again to FIG. la, a coil controller and a power switch (not shown) have
  • connection point 408 to the low "-" terminal of the power bus.
  • the coil controller 204 and power switch 304 have connected connection point 404 to the high "+” terminal of the power bus.
  • the first (or high) current path then includes coils 416, 414 with the second current path including the remainder of the coils.
  • connection points 408, 404 are disconnected from the power bus, connection point 406 is connected to the low "-" terminal of the power bus and connection point 402 is connected to the high "+” terminal. This reconfiguration of these connection points is done in response to the movement of the high intensity region 104 of the magnetic field as it progresses around the series configuration of the coils.
  • an azimuthal reference point is arbitrarily indicated by the vertical line 108 and represents an azimuthal position of zero degrees
  • a trailing edge of the high intensity region is shown in FIG. la as being offset from the line 108 by theta 1 (" ⁇ 1") degrees
  • FIG. lb shows that the high intensity region has rotated to an offset from the line 108 of theta 2 (" ⁇ 2") degrees, which is greater than theta 1 degrees.
  • the magnetic field rotates with the rotor 102 and, therefore, rotates relative to the stator 103 and coils 412, 414, 416, 418.
  • the electromagnetic coils 412, 414, 416, 418 of the stator 103 is most efficient if only the coils that are entering the high intensity region 104 and the coils that are within the high intensity region (i.e. either partially or completely overlapped by the high intensity region 104) are connected into the first (or high) current path. Those coils that do not overlap the high intensity region 104 are connected in the second (or low) current path.
  • the coils are connected in a series configuration. If the coils are individually connected to the power bus(es), then the first current path may include only the coils that at least partially overlap the high intensity region 104, with the remainder of the coils disconnected from the power bus(es). In this case, the second current path would have zero current, which is also lower than the current in the first current path.
  • the high intensity region 104 is indicated as being contained within a
  • the high intensity region 104 also rotates thereby selectively overlapping (at least partially) various coils in the stator 103.
  • the position of the high intensity region as well as its size may be determined by multiple magnetic field sensors (hereafter “sensors”) that are disposed at multiple predetermined azimuthal locations in the stator, where the azimuthal locations are relative to an axis of rotation 106 of the rotor 102 and to the arbitrary reference line 108. Each sensor is generally associated with one of the coils.
  • the sensors 212, 214, 216 are associated with 412, 414, 416, respectively, with each of the sensors 212, 214, 216 being positioned at a predetermined azimuthal location in the stator 103.
  • the predetermined location of each sensor is known by the master and coil controllers. Therefore, a magnetic field intensity detected by a
  • particular sensor may be used to determine the azimuthal orientation of the leading and trailing edges 109, 110 of the high intensity region 104 in real-time, and thus determine the size of the high intensity region in realtime.
  • a single sensor may be used to detect the high intensity region, but it is preferred to distribute multiple sensors (e.g. sensors 212, 214, 216) around the stator 103 to provide better accuracy in locating the azimuthal orientation of the high intensity region 104 as it rotates with the rotor 102. There may be more or less sensors than the sensors 212, 214, 216 shown in FIGS, la-lc.
  • leading and trailing edges 109 Please note that the leading and trailing edges 109,
  • the leading and trailing designations are reversed with 110 indicating the leading edge and 109 indicating the trailing edge.
  • the leading edge indicates a transition from a low to a high intensity region
  • the trailing edge is a transition from a high to a low intensity region.
  • FIGS, la-lc show only one high intensity region 104.
  • various rotor configurations may create a varying number of multiple high intensity regions 104. This control system 105 may easily accommodate
  • the control system 105 includes at least one
  • This communication network that provides a transmission medium for sending and receiving data, command and status messages on the network to and from the master controller 240 and the multiple coil controllers (e.g. coil controllers 202, 204, 206).
  • This communication network is described more fully below, but the network is not restricted to any particular type of network, such as a serial digital bus (e.g. CAN, I2C, etc.), a daisy-chain network configuration, etc.
  • the motor control unit 200 may include a master controller 240, one or more coil
  • a solid-state coil controller 204 is adapted to control at least one coil 414 of a stator coil assembly 400, which interacts with the high intensity region 104 of the magnetic field. There may be multiple stator segments, each
  • the magnetic field of the rotor 102 may be static during stall conditions and start-up, and rotating during operation.
  • the magnetic coupling between magnetic devices on the rotor and stator may cause mechanical energy to energize the coils and convert into electrical energy, and/or electrical energy to convert to mechanical energy. Maximizing a duration, intensity, and vector product of the magnetic coupling between the rotor's magnetic devices and the coils in the stator segments improves efficiency.
  • a communications network establishes data sharing between one or more coil controllers, and a master
  • the communications network can be a daisy chain connecting one coil controller to an adjacent coil
  • the electrical machine 100 be a motor or a generator that includes a rotor that rotates relative to a stator.
  • the electrical machine 100 may be a linear motor, where magnetic flux field move linearly, but follow the same principals disclosed in this disclosure.
  • the control system 105 may include a magnetic field sensor S(n) 214, a state-defined logic circuit(n) 224, a communication network 220, and a power switch driver (n) 234 for each coil controller (n) .
  • the power switch driver 234 may be a half-bridge driver 304, consisting of a high-side power switch 312 and a low-side power switch 316.
  • the output 314 of the power switch 304 is connected to a current injection terminal 404, which may be connected to two adjacent coils 412, 414. All power switches 302, 304, 306 are supplied with at least one high current power source (“power source”) 330, connected through a power bus 320.
  • the power switch 304 output connects the current injection point 404 to a first power switch ("high-side") 312 to either positive supply, or a second power switch ("low-side") 316 to the negative voltage 312 of the power source, often referred to as Ground (GND) or return.
  • each coil may be controlled individually.
  • Each coil controller 202, 204, 206 is connected to the communication network 220, to send and receive data to and from the logic block 224, half-bridge driver, magnetic field sensors 212, 214, 216.
  • the controller may be programmed to receive magnetic field intensity data from the sensors 212, 214, 216 to determine the exact position of each coil relative to a rotating magnetic field which the coils 412, 414, 416, 418 interact with.
  • the sensors detect the leading and trailing edges of the magnetic field, thereby detecting the high intensity region 104.
  • Examples of data shared on the communication network includes the position of the coil associated with the controller relative to the flux field, the position of at least one adjacent coil supplied by the adjacent position sensor, such as S(n-l) 204, providing its relative position to the same flux field, indication of the direction of rotation, speed, torque, temperature, flux flied strength, current the flows through each coil, supply voltage, output voltage .
  • the coil controllers 202, 204, 206 may utilize position data to determine a turn-on timing and turn-off timing of the high-side and the low-side power switches, respectively. This turn-on and turn-off timing may be determined in relation to the actual detected
  • the turn-on and turn-off timing for each coil may be determined without regard for manufacturing tolerances of the rotor 102, bearings, stator 103, temperature variations, etc. that normally effect efficiencies in electrical machines 100 that do not directly detect the azimuthal position of the high intensity region 104.
  • data describing the momentary operating parameters of the electrical machine 100 can be used to determine (or calculate via a computing device such as a micro-controller, digital signal processor, FPGA, or PLD), the time to wait (delay), extend (sustain), accelerate or decelerate the electrical current ramp.
  • the control system 105 receives sensor data from the magnetic field sensor 214 that indicates the current position (or location) of the high intensity region 104. Based on this indication, the control system 105 determines that coil 414 is about to enter, or has already entered, the high intensity region 104 and relays this information to the coil controller 214, which also receives information over the communication network 220 from preceding coil controller 212, indicating its
  • associated coil 412 is not in the high intensity region 104.
  • FIG. 3 illustrates the logic signal relationships for high-side power switch (e.g. 312) and low-side power switch (e.g. 316) control signals
  • eleven coil segments are listed, each describing its relative position to the high intensity region 104, and the power bus connection to an associated power injection point 402, 404, 406, 408 through either an active or inactive high-side power switch (e.g. 312) or low-side power switch (e.g. 316) activation.
  • the number of coils has been arbitrarily chosen and can be extended or reduced to fit the specific requirements of the applications in keeping with the principles of this disclosure. If a single coil is being driven, a traditional H-bridge instead of a half-bridge configuration may be used.
  • a high intensity region 104 or active power switch is indicated by a "1".
  • the high current path for the coil configuration shown in FIG. la is the lesser number of coils that are between the positive (+) and negative (-) injection points.
  • coil 11 (coil 416) and coil 10 (coil 414) are by machine design exposed to a high magnetic field, indicated by magnetic field sensor "S" signal 1.
  • the coil controller 204 associated with coil 10 (coil 414) activates the high-side power switch 312 of its power switch 304, effectively connecting a first coil terminal to the high current power source 330. Simultaneously, logic unit of coil 1 with two coil positions in the counter-clockwise direction,
  • coil 412 enters the high intensity region 104.
  • a high-side power switch connected to one terminal of coil 414
  • This method can be applied to one or more coils
  • FIG. 5 illustrates a non-limiting example of utilizing a hard-wired logic block 500 that may include a logic inverter circuit 510, a logic gate circuit 520 and a
  • Inverter 511 provides both a buffered input signal as well as an inverted input signal from magnetic field sensor 204.
  • the input signal from preceding controller 202 is also conditioned with both inverted and buffered logic using inverter 512.
  • a coil controller can also be configured for both active-high and active-low input signal processing.
  • active-low logic from the magnetic field sensor the logic function for both high-side drive H and low-side drive L signals used for clockwise operation are derived from equations 1 and 2 given below:
  • An active-low Enable signal will disable an active high output for both high-side and low-side control signal and is also connected to the AND gates 521 and 522.
  • the Enable signal can be strobed to provide a PWM function to the power switch control signal, which may be used to provide further control of current to the coil assembly, and effectively control torque or speed of the motor.
  • FIG. 5 also illustrates a communication network 220 and power bus 230 connections for digital power 324 and analog power 328.
  • the communication network may include control signals for enabling or strobing terminal 502, or other control signals for direction 504 and amplitude control of current flow, which will determine clockwise or counter-clockwise rotation of the electrical machine 100. It also may include a daisy-chain signal from magnetic field sensor 212 of the preceding coil controller 202, and a buffered digital output signal 508 from the associated magnetic field sensor 204 to the succeeding coil controller 206.
  • the clockwise control signal 504 controls a single-pole double-throw (SPDT) switch circuit 530 configured as a 2-to-l multiplexer.
  • SPDT single-pole double-throw
  • a positive digital value of the control signal 504 connects the output of the AND gate 521 to the SPDT switch output of 531, which is connected to the high-side control logic terminal of the half-bridge driver 234, and output of the AND gate 522 to the SPDT switch output of 532, which is connected to the low-side control logic terminal of the half-bridge driver 234, which controls the high-side H 312 and low-side L power-switch 316 respectively to inject or return current to and from the associated injection point 404.
  • FIG. 4 illustrates those conditions for all coil drivers as a function of the high intensity region position.
  • the logic implementation is given as equations 3 and 4 below:
  • a communication network interface structure more clearly illustrates a daisy chain configuration of a magnetic field sensor signaling, which may be integrated into the communication network 220.
  • FIG. 7 illustrates another example of a communication network interface, which uses a serial bus (e.g. Controller Area Network (CAN), SPI, I2C), which provide individual addressability of coil controllers 202, 204, 206.
  • serial bus e.g. Controller Area Network (CAN), SPI, I2C
  • the logic controller may also be implemented in software for a microcontroller, or programmed into a serial bus (e.g. Controller Area Network (CAN), SPI, I2C), which provide individual addressability of coil controllers 202, 204, 206.
  • the logic controller may also be implemented in software for a microcontroller, or programmed into a
  • PLD programmable logic device
  • FPGA field-programmable gate array
  • the serial bus communication network may be configured in a token-ring configuration to establish communication from one coil controller to another, master system controller to coil controller broadcast, and a coil controller to Master System controller messaging to exchange pertinent performance and timing information.
  • the communication network may also include wireless or optical physical layer connections, each with their own advantages such as assembly cost reduction and isolation barrier, and disadvantages such as complexity and poor noise immunity.

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Control Of Ac Motors In General (AREA)

Abstract

L'invention concerne un système de commande pour commander un procédé de transformation de l'énergie d'une machine électrique, telle qu'un moteur ou un générateur, qui peut comprendre un rotor qui tourne par rapport à un stator. Une matrice de commutation de puissance est commandée par de multiples contrôleurs de bobine pour connecter sélectivement de multiples bobines à un ou plusieurs bus de puissance en réponse à une indication en temps réel d'une position azimutale d'une région haute intensité de champ magnétique qui tourne avec le rotor. Les bobines qui recouvrent au moins partiellement la région haute intensité sont activées, tandis que les bobines restantes sont désactivées. Un réseau de communications peut fournir des trajets de communication entre les contrôleurs pour transférer des messages de commande, d'état et de données.
PCT/US2014/053633 2013-08-31 2014-09-01 Système de commande pour transformation d'énergie dans une machine électrique WO2015031878A1 (fr)

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US61/872,662 2013-08-31

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT201700059015A1 (it) * 2017-06-02 2018-12-02 Mario Burigo Configurazione elettrica innovativa e modulare per motori/generatori brushless dc con elettromagneti indipendenti e controllati singolarmente

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20090058335A1 (en) * 2004-12-17 2009-03-05 Kascak Peter E Control system for bearingless motor-generator
US20100244599A1 (en) * 2006-10-27 2010-09-30 Saban Daniel M Electromechanical energy conversion systems
US20120091832A1 (en) * 2009-09-21 2012-04-19 Soderberg Rod F Matrix material comprising magnetic particles for use in hybrid and electric vehicles
WO2012167316A1 (fr) * 2011-06-10 2012-12-13 Axiflux Holdings Pty Ltd Moteur/générateur électrique
US20130127391A1 (en) * 2010-03-17 2013-05-23 GE ENERGY POWER CONVERSION TECHNOLOGY LTD. (formerly Converteam Technology Ltd.) Electrical machines

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20090058335A1 (en) * 2004-12-17 2009-03-05 Kascak Peter E Control system for bearingless motor-generator
US20100244599A1 (en) * 2006-10-27 2010-09-30 Saban Daniel M Electromechanical energy conversion systems
US20120091832A1 (en) * 2009-09-21 2012-04-19 Soderberg Rod F Matrix material comprising magnetic particles for use in hybrid and electric vehicles
US20130127391A1 (en) * 2010-03-17 2013-05-23 GE ENERGY POWER CONVERSION TECHNOLOGY LTD. (formerly Converteam Technology Ltd.) Electrical machines
WO2012167316A1 (fr) * 2011-06-10 2012-12-13 Axiflux Holdings Pty Ltd Moteur/générateur électrique

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT201700059015A1 (it) * 2017-06-02 2018-12-02 Mario Burigo Configurazione elettrica innovativa e modulare per motori/generatori brushless dc con elettromagneti indipendenti e controllati singolarmente

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