| Class / Patent application number | Description | Number of patent applications / Date published |
|---|
| 318495000 | Plural, diverse or diversely controlled, armature or primary windings | 45 |
| 20080278104 | CONTROL CIRCUIT OF SENSORLESS MOTOR AND CONTROL METHOD THEREOF - A control circuit of a sensorless motor includes a first coil, a second coil, a first switch circuit, a second switch circuit and an auxiliary switch circuit. The first switch circuit is electrically connected to the first coil and controls a direction of a current flowing through the first coil. The second switch circuit is electrically connected to the second coil and controls a direction of a current flowing through the second coil. The auxiliary switch circuit is electrically connected to and between the first coil and the second coil and controls the directions of the currents flowing through the first coil and the second coil by cooperating with the first switch circuit and the second switch circuit. A control method of a sensorless motor is also disclosed. | 11-13-2008 |
| 20110101905 | GENERATING ELECTROMAGNETIC FORCES IN LARGE AIR GAPS - An electromagnetic actuator generates electromagnetic forces across large radial gaps to support a body. The actuator has an actuator target having a rotational axis, and a target magnetic element arranged circumferentially around the rotational axis that has inner and outer magnetic poles. A cylindrical soft-magnetic target pole is magnetically coupled to the outer cylindrical magnetic pole of the target magnetic element. An actuator base includes radial poles arranged circumferentially around and radially spaced apart from the cylindrical soft-magnetic target pole. The radial poles and the cylindrical soft-magnetic target pole are magnetically coupled and define a plurality of magnetic control circuits. Control coils around the radial poles are configured to produce magnetic fluxes in the magnetic control circuits. The target magnetic element, the cylindrical soft-magnetic target pole, and the radial poles are magnetically coupled and define a magnetic bias circuit, the magnetic element producing magnetic flux in the magnetic bias circuit. | 05-05-2011 |
| 20120025747 | METHOD OF OPERATING AN ELECTROMECHANICAL CONVERTER, A CONTROLLER AND A COMPUTER PROGRAM PRODUCT - The invention relates to a method of operating an electromechanical converter, in particular an electric variable transmission, provided with a primary shaft having a rotor mounted thereon, a secondary shaft having an interrotor mounted thereon, and a stator, fixedly mounted to the housing of the electromechanical converter, wherein, viewed from the primary shaft in radial direction, the rotor, the interrotor and the stator are arranged concentrically relative to each other. The rotor and the stator are designed with one or more windings. Further, the interrotor forms one whole both mechanically and electromagnetically, and is arranged as a conductor for magnetic flux in an at least tangential direction. The method comprises the step of variably controlling a magnetic rotor flux. | 02-02-2012 |
| 20120306424 | ELECTRIC DRIVE WITH ELECTRONICALLY SCALABLE RECONFIGURABLE WINDING - A stator phase circuit for an electric machine includes a phase winding circuit including a plurality of series coupled sub-winding circuits, each sub-winding circuit includes a respective sub-winding coupled in parallel across a respective first controllable switch. | 12-06-2012 |
| 20130002182 | DYNAMIC RECONFIGURATION-SWITCHING OF WINDINGS IN A BRUSHLESS DC MOTOR - Dynamic reconfiguration-switching of motor windings is optimized between winding-configurations. Acceleration is traded off in favor of higher velocity upon detecting a brushless DC motor is at an optimal angular-velocity for switching to an optimal lower torque constant and voltage constant. The total back electromotive force (BEMF) is prohibited from inhibiting further acceleration to a higher angular-velocity. | 01-03-2013 |
| 20130002183 | DYNAMIC CONFIGURATION OF A CALCULATION FUNCTION THAT OPTIMIZES DYNAMIC RECONFIGURATION-SWITCHING OF WINDINGS IN AN ELECTRIC MOTOR - A calculation function, which optimizes a dynamic reconfiguration-switching of motor windings between winding-configurations, is dynamically configured. Acceleration is traded off in favor of higher velocity upon detecting the electric motor is at an optimal angular-velocity for switching to an optimal lower torque constant and voltage constant. The total back electromotive force (BEMF) is prohibited from inhibiting further acceleration to a higher angular-velocity. | 01-03-2013 |
| 20130002184 | DYNAMIC RECONFIGURATION-SWITCHING OF WINDINGS IN AN ELECTRIC MOTOR IN AN ELECTRIC VEHICLE - Dynamic reconfiguration-switching of motor windings in an electric motor in an electric vehicle is optimized between winding-configurations. Acceleration is traded off in favor of higher velocity upon detecting the electric motor in the electric vehicle is at an optimal angular-velocity for switching to an optimal lower torque constant and voltage constant. The total back electromotive force (BEMF) is prohibited from inhibiting further acceleration to a higher angular-velocity. | 01-03-2013 |
| 20130241458 | MOTOR DRIVING DEVICE AND VEHICLE - This motor driving device includes a motor including a high speed drive coil and a low speed drive coil, a coil switching portion switching connection states of the high speed drive coil and the low speed drive coil of the motor, a power converter connected to the motor, and a single first case portion storing at least the motor, the coil switching portion, and the power converter. | 09-19-2013 |
| 20130264987 | ELECTRIC POWER TOOL - An electric power tool comprising: a motor including, a rotor, a stator including a plurality of teeth, and a coil wound on the teeth; a front-end tool configured to be driven by an output of the motor; a driving circuit configured to supply driving voltage to the coil of the motor; a control unit configured to control operation of the driving circuit; and a trigger switch configured to control activation and rotation of the motor wherein a first coil and a second coil are mounted on the teeth as the coil, and wherein the control unit controls supply of the driving voltage to the first coil and the second coil in accordance with a pulling amount of the trigger switch. | 10-10-2013 |
| 20140197771 | MOTOR CONTROL APPARATUS AND MOTOR CONTROL METHOD - A winding switching signal generator is configured to obtain information indicating a degree of field weakening from at least one of a current command calculator and a constant output controller, and to generate a winding switching signal for switching from a low speed rotation state to a high speed rotation state when the degree of the field weakening exceeds a predetermined condition in the low speed rotation state. | 07-17-2014 |
| 20140265988 | SYSTEM AND METHOD FOR A PROGRAMMABLE ELECTRIC CONVERTER - An electric converter is provided which uses independently controlled field coils to impress a temporary magnetic field on a rotor movable relative to one or more armatures. In some embodiments, the rotor of the programmable electric converter is rotatable with the axis of rotation being on a horizontal or vertical axis. In various embodiments, the electric converter disclosed herein may be adapted for use as a continuous power solution to provide power for a limited period of time in the event of a power outage by absorbing energy and storing it mechanically in the rotor. In some embodiments, the electric converter may be utilized as a generator. In some embodiments, both AC and DC could be simultaneously produced, where AC is generated in one armature coil and DC in another coil. In some embodiments, the programmable electric converter can operate as an AC to AC converter, AC to DC converter, DC to AC converter, or DC to DC converter. In some embodiments, the electro-magnetic converter may be utilized to provide electro-magnetic propulsion to provide precise acceleration profiles and capture regenerative braking energy. | 09-18-2014 |
| 20160190968 | ELECTRIC MOTOR WITH REDUNDANT ELECTRIC CIRCUITS - An electric motor having a stator defining a number N, at least equal to two, of pairs of poles and a rotor mounted to pivot in the stator. The motor has a number n of electric circuits each defining two windings mounted on poles of the stator, the windings of all the circuits being substantially identical to each other, the number n of electric circuits being greater than the number N of pairs of poles and at least first and second electric circuits being mounted on a first of the pairs of poles and a third of the electric circuits being mounted on a second of the pairs of poles. | 06-30-2016 |
| 318496000 | Polyphase windings | 18 |
| 20080218114 | Mixed Device for Controlling Power Transfer Between Two Cores of a Direct Current Network and Supplying an Alternating Current Motor - A combined device for instantaneous control of power transfer between two cores of a direct current network and for powering an alternating current engine. The device includes: an assembly of two three-phase inverters, each including three switching cells connected to the engine, which engine includes three stator windings connected to the two three-phase inverters, and a module for controlling the assembly, which ensures both an adjustable direct current power transfer and enables stabilization of the direct current voltage of one of the two cores if it is not connected, and the control of the engine. | 09-11-2008 |
| 20090134833 | PHASE CURRENT SAMPLING AND REGULATING APPARATUS AND METHODS, AND ELECTRIC MOTOR DRIVE SYSTEMS - In various embodiments, a phase current sampling apparatus ( | 05-28-2009 |
| 20100066295 | TRIGGER MECHANISM FOR CURRENT ACQUISITION USED FOR MOTOR CONTROL APPLICATIONS - A trigger mechanism for starting current acquisition for motor control applications is disclosed. The present invention may generate an edge (ADC trigger) that can be used to start current acquisition by the ADC. The present invention may reduce the overhead involved in synchronizing the current acquisition with PWM generation and also minimize the wait period for software conversions to complete by replacing software-based timing with a hardware-based trigger mechanism. | 03-18-2010 |
| 20110221375 | POWER CONVERTER - In a power converter, a voltage command signal shifting part shifts a first duty command signal such that a first duty center value related to a voltage applied to a first set of windings is shifted downwards than an output center value of a possible duty range. The voltage command signal shifting part also shifts a second duty command signal such that a second duty center value related to a voltage applied to a second set of windings is shifted upwards than the output center value. First and second shift amounts of the first and second duty center values from the output center value are varied depending on amplitude. Accordingly, ripple current of a capacitor can be decreased, and a difference in heat loss between switching elements can be minimized. | 09-15-2011 |
| 20110241591 | DEVICE WITH A POLYPHASE ELECTRICAL MACHINE, AND RELATED ELECTRICAL MACHINE - The invention relates to a device having a polyphase electrical machine, wherein a plurality of inverters ( | 10-06-2011 |
| 20130119914 | METHOD AND CIRCUIT ASSEMBLY FOR CURRENT CONTROL IN 3-PHASE MOTORS - A method and circuit assembly are provided for controlling the motor current in an electric 3-phase motor, in particular in a 3-phase stepper motor, by a chopper process. For at least two of the three motor connections a respective chopper phase is cyclically activated, while a target motor current supplied for the motor connection in question is injected into the motor connection by a chopper process, while the two other motor connections are connected to each other. | 05-16-2013 |
| 20140062375 | CONTROL APPARATUS FOR THREE-PHASE ROTARY MACHINE - An ECU having two inverters outputs AC currents, which have the same amplitude and a phase difference of 30°. When motor magnetic fluxes include distortion component of fifth harmonic, a torque ripple of sixth harmonic is generated in a torque of each drive system. The torque ripples of sixth harmonic are cancelled out in a sum of torques of the two drive systems. A fifth harmonic current having a frequency of fivefold are superimposed on base components of currents so that peak values of the base wave currents are reduced. As a result, heat generation arising from current peak values can be reduced. | 03-06-2014 |
| 20140103850 | REDUNDANT WINDING CONNECTIONS FOR MULTIPHASE ELECTRIC MACHINES - Redundant winding connections for multiphase electric machines are disclosed. According to one aspect, a multiphase machine having redundant winding connections includes: a first set of N coils operating as a first winding group, wherein each coil in the first winding group operates at a different phase from the other coils in the first winding group and wherein N is an integer greater than three; a second set of N coils separate from the first set and operating as a second winding group, wherein each coil in the second winding group operates at a different phase from the other coils in the second winding group and wherein the failure of one of the coils in the first winding group does not affect the function of the second winding group. | 04-17-2014 |
| 20140239869 | Electrical System - An electrical system is provided. The electrical system includes a first 2-pole direct current source and/or sink, a second 2-pole direct current source and/or sink, a first 3-phase direct current/alternating current converter, a second 3-phase direct current/alternating current converter, and an electrical machine. The electrical machine is designed with 6 phases, and has a first 3-phase stator system and a second 3-phase stator system that are electrically isolated from each another. | 08-28-2014 |
| 20140253009 | CONTROL APPARATUS FOR AC ROTATING MACHINE AND ELECTRICALLY-ASSISTED POWER STEERING APPARATUS PROVIDED WITH THE CONTROL APPARATUS - A control apparatus for AC rotating machine includes: a voltage command calculation means for calculating voltage commands on two rotational axes; a first voltage application means for applying voltages to first windings of a multiple-winding AC rotating machine having at least the first windings and second windings based on the voltage commands on two rotational axes output by the voltage command calculation means; and a second voltage application means for applying voltages to the second windings based on the voltage commands on two rotational axes output by the voltage command calculation means, wherein the second voltage application means applies voltages to the second windings based on the deviations between the currents fed to the first windings and the currents fed to the second windings. | 09-11-2014 |
| 20140312823 | Harmonics Suppression in a Power Delivery Device - Embodiments described herein provide a power delivery system, as well as a method of configuring the power delivery system. The power delivery system includes two or more rectifiers electrically coupled to an AC power source and configured to generate a direct current. The power delivery system also includes two or more inverters configured to receive the direct current and generate an alternating current waveform for powering a load. Moreover, the two or more rectifiers and the two or more inverters are coupled in series with each other through an inductor. | 10-23-2014 |
| 20150008859 | POWER CONVERSION APPARATUS AND ELECTRICAL-MECHANICAL ENERGY CONVERSION SYSTEM - A power conversion apparatus includes arms in each of which one or more unit converters each including a capacitor and capable of outputting an arbitrary voltage are connected in series, and a point P as a first node to which one end of the respective arms are Y-connected, and a point N as a second node to which a neutral terminal of the rotary electric machine is connected. The other end of the respective arms are connected to one ends of respective phase windings of a rotary electric machine. | 01-08-2015 |
| 20150069947 | DYNAMIC RECONFIGURATION-SWITCHING OF WINDINGS IN AN ELECTRIC MOTOR - Dynamic reconfiguration-switching of motor windings is optimized between winding-configurations. Acceleration is traded off in favor of higher velocity upon detecting an electric motor is at an optimal angular-velocity for switching to an optimal lower torque constant and voltage constant. The total back electromotive force (BEMF) is prohibited from inhibiting further acceleration to a higher angular-velocity. | 03-12-2015 |
| 20150145461 | INPUT EMI FILTER FOR MOTOR DRIVE INCLUDING AN ACTIVE RECTIFIER - A poly-phase motor drive includes an input EMI filter having a poly-phase filter input and a poly-phase filter output and an active rectifier connected to the filter output. The input EMI filter includes notch filters tuned at active rectifier and motor drive inverter switching frequencies and diverts common-mode current into DC bus. The active rectifier has a DC output. A motor drive inverter is connected to the DC output. The motor drive inverter has a poly-phase motor control output. | 05-28-2015 |
| 20150303857 | CONTROL SYSTEM FOR AN ELECTRIC MOTOR - A control system for an electric motor, the control system comprising a first control device arranged to control current in a first coil set of the electric motor and a second control device arranged to control current in a second coil set of the electric motor; wherein the first control device includes a first interface arrangement for receiving data from a first controller for allowing the first control device to determine a required current flow in the first coil set, wherein the first interface arrangement is arranged to communicate data to the second control device for allowing the second control device to determine a required current flow in the second coil set. | 10-22-2015 |
| 20160049894 | A CONTROL SYSTEM FOR AN ELECTRIC MOTOR - A control system for an electric motor, the control system comprising a first control device arranged to control an operation of a first component of the electric motor; a second control device arranged to control an operation of a second component of the electric motor, wherein the first control device is arranged to transmit to the second control device a first signal for indicating the transmission of data over a first communication link to the second control device, wherein the second control device is arranged to use the timing of the first signal to synchronise the operation of the second component with the operation of the first component. | 02-18-2016 |
| 20160087571 | CIRCUIT ARRANGEMENT HAVING REDUNDANT HALF BRIDGES FOR OPERATING AN ELECTRIC MACHINE - A circuit arrangement for operating an electric machine, which has a plurality of lines, each for one phase of an alternating current to the electric machine, each line having a plurality of series-connected switching elements that form a half bridge, the half bridge having a terminal between two switching elements, and the circuit arrangement being electrically couplable to the electric machine via the terminals of the half bridge. The circuit arrangement is characterized in that each line has a plurality of half bridges, which are electrically connected parallel to each other. | 03-24-2016 |
| 20170237378 | METHOD FOR DRIVING AN AC MOTOR BY TWO-PHASE ELECTRIC POWER AND POWER GENERATION METHOD | 08-17-2017 |
| 318497000 | Series-parallel | 11 |
| 20110057597 | ELECTRICAL MACHINE - The invention relates to an electrical machine and to a method for the operation thereof, particularly as a drive motor for an electrical tool or as starter generator for a motor vehicle. The electrical machine includes a rotor excited by a permanent magnet and a stator carrying a multi-phase winding, and operates in a voltage-controlled, lower rotational speed range via a transformer on a DC voltage source. The electrical machine can also be operated in a higher rotational speed range by field weakening, and the structure of the machine can be changed by reducing the flux linkage between the rotor and the stator in order to weaken the field. Preferably, the change to the structure of the machine is carried out by turning off winding parts or by switching them between series and parallel connections. | 03-10-2011 |
| 20110234139 | Electronically commutated serial-parallel switching for motor windings - A method and a circuit for controlling an ac machine comprises controlling a full bridge network of commutation switches which are connected between a multiphase voltage source and the phase windings to switch the phase windings between a parallel connection and a series connection while providing commutation discharge paths for electrical current resulting from inductance in the phase windings. This provides extra torque for starting a vehicle from lower battery current. | 09-29-2011 |
| 20110241592 | ADAPTIVE WINDING SYSTEM AND CONTROL METHOD FOR ELECTRIC MACHINES - An adaptive winding configurations and control method is disclosed for the electromagnetic poles of electric machines, including motors and generators. Motors utilizing the inventive adaptive winding configuration and control method are able to dynamically adjust their operating characteristics to maintain a constant rated power over a large operating speed range with high efficiency. Generators employing the inventive adaptive winding configuration and control method are able to dynamically adjust their operating characteristics in response to a variable driving force to achieve maximum power conversion efficiency. These generators are also able to dynamically change their output voltage and current (thus charging speed) when charging batteries depending on the charged state of the battery, and on the expected duration of the input power. | 10-06-2011 |
| 20120068656 | SWITCH MODULE FOR AN ELECTRIC MACHINE HAVING SWITCHABLE STATOR WINDINGS - An electric machine including a housing and a stator arranged within the housing. The stator includes a plurality of stator windings that define a number of phases. A switch module is mounted at the housing. The switch module includes a plurality of switch members that are operatively connected to the plurality of stator windings. The plurality of switch members are configured and disposed to selectively establish one of a first electrical connection configuration and a second electrical connection configuration of the plurality of stator windings. | 03-22-2012 |
| 20120086380 | ELECTRIC MOTOR HAVING WINDINGS OPERABLE IN PARALLEL AND/OR SERIES, AND RELATED METHODS - An electric motor for propelling a vehicle includes a stator; a rotor that rotates with respect to the stator; a magnet located on the stator or the rotor; a first winding segment and a second winding segment located on the other of the stator or the rotor; and a controller. The controller is adapted to operate the first winding segment and the second winding segment in series or in parallel as a function of at least the motor current. Methods of controlling an electric motor for propelling a vehicle, and a vehicle incorporating the electric motor, are also described. | 04-12-2012 |
| 20120268053 | ALTERNATING CURRENT MACHINE WITH INCREASED TORQUE ABOVE AND BELOW RATED SPEED FOR HYBRID/ELECTRIC PROPULSION SYSTEMS - The machine in accordance with the present disclosure is an AC machine whose pole numbers can be switched (from pole p | 10-25-2012 |
| 20130020979 | DYNAMIC RECONFIGURATION-SWITCHING OF WINDINGS IN AN ELECTRIC MOTOR - Dynamic reconfiguration-switching of motor windings is optimized between winding-configurations. Acceleration is traded off in favor of higher velocity upon detecting an electric motor is at an optimal angular-velocity for switching to an optimal lower torque constant and voltage constant. The total back electromotive force (BEMF) is prohibited from inhibiting further acceleration to a higher angular-velocity. | 01-24-2013 |
| 20130175966 | DYNAMIC RECONFIGURATION-SWITCHING OF WINDINGS IN A MOTOR USED AS A GENERATOR IN A TURBINE - For a motor used as a generator, employing a dynamic reconfiguration-switching of motor windings upon the generator, used in a turbine, exceeding a maximum usable constraint of a first direct current (DC)-to-alternating current (AC) inverter in order to reduce a voltage constant of the motor thereby limiting one of a produced voltage and a produced power. | 07-11-2013 |
| 20140125269 | WINDING SWITCHING CIRCUIT AND THERMAL PROTECTION FOR DUAL VOLTAGE HERMETIC INDUCTION MOTOR OF HERMETIC COOLING COMPRESSOR - A winding switching circuit and thermal protection for dual voltage hermetic induction motors used in hermetic cooling compressors. The circuit includes two coils of the main winding, an auxiliary winding, three switches that are connected based on desired connections for each of the power arrangements, a start-up relay and thermal protection devices that protect the two main windings from overheating. The circuit is operative in first and second arrangements. In the first arrangement, the first switch and the third switch are connected, the second switch is disconnected, and the first main winding, and second main winding and the auxiliary winding are connected in parallel. In the second arrangement, the first switch and the third switch are disconnected, the second switch is connected, and the first main winding and the second main winding are connected in series and the auxiliary winding is connected in parallel only to the second main winding. | 05-08-2014 |
| 20140217946 | INVERTER DEVICE AND MOTOR DRIVE SYSTEM - An inverter device includes a power supply unit and a switch controller. The power supply unit supplies AC power to an AC motor whose electric characteristics in response to a rotation speed are switchable between low speed characteristics and high speed characteristics. The switch controller switches the electric characteristics of the AC motor. The switch controller executes switching control that alternately switches the electric characteristics of the AC motor between the low speed characteristics and the high speed characteristics on the basis of the rotation speed of the AC motor. | 08-07-2014 |
| 20160141996 | ELECTRIC MOTOR SYSTEM FOR VEHICLES AND METHOD OF ADJUSTING COIL WINDING NUMBER OF ELECTRIC MOTOR FOR VEHICLES - Provided is an electric motor system for vehicles, which adjusts a coil winding number of a vehicle electric motor. The electric motor system for vehicles includes an inverter configured to include a power switching circuit connected to a vehicle battery in parallel and a coil switching circuit connected to the power switching circuit, wherein the coil switching circuit receives and outputs a driving current having different phases which is generated according to a switching operation of the power switching circuit, an electric motor configured to include a plurality of winding coils that receive the driving current and are wound at multi stages, and a controller configured to control a switching operation of the coil switching circuit to adjust a winding number of each of the plurality of winding coils to a maximum coil winding number by serially connecting all of the plurality of winding coils in a low speed driving mode and to adjust the winding number of each of the plurality of winding coils to a minimum coil winding number by serially connecting some of the plurality of winding coils in a high speed driving mode. | 05-19-2016 |
| 318498000 | Energized or controlled in predetermined sequence | 4 |
| 20130127391 | ELECTRICAL MACHINES - An ac synchronous electrical machine includes a stator and a multi-phase stator winding that defines a plurality of stator poles. The stator winding has two or more coil groups, each coil group including a plurality of coils for each phase that are received in winding slots in the stator. The stator winding is connected to a power source/sink. The coil groups are connected in series and each coil group is connected to a power source/sink by a respective switch ( | 05-23-2013 |
| 20150318812 | ELECTRIC MACHINE - An electric machine has a primary mechanical output or input, a plurality of electric sub-machine rotors each having an output or input shaft, a plurality of electric sub-machine stator magnets proximate the rotors, a drive train connecting each of the output or input shafts of the plurality of electric sub-machine rotors to simultaneously drive, or be driven by, the primary output shaft. Each sub-machine is selectively engaged or disengage depending on machine power. | 11-05-2015 |
| 20160126802 | DRIVING DEVICE AND VEHICLE WITH THE SAME - A driving device includes: a motor; a first housing portion housing the motor; a capacitor configured to stabilize a voltage of the DC power input to an input unit; an inverter unit configured to convert DC power into AC power; and a second housing portion housing the input unit, the capacitor, and the inverter unit. The motor includes a motor shaft to be coupled to an external load. The first housing portion and the second housing portion are integrally combined to be arranged along a second direction perpendicular to a first direction in which the motor shaft extends. The input unit, the capacitor, and the inverter unit are arranged in this order along a direction from an end side on a load side to be coupled to an external load toward another end side in the motor shaft. | 05-05-2016 |
| 20160173019 | POWER SUPPLY UNIT AND ELECTRIC MACHINE | 06-16-2016 |
