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公开(公告)号：US20190097560A1
公开(公告)日：2019-03-28
申请号：US16043983
申请日：2018-07-24
发明人： Hirokazu TAJIMA
CPC分类号： H02P21/10 , H02P21/141 , H02P21/24
摘要： A controller for an induction motor includes a proportional gain setter that sets a magnitude of a proportional gain of a current regulator, and the proportional gain setter sets the magnitude of the proportional gain based on the leakage inductance in response to the primary current.
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公开(公告)号：US10236814B2
公开(公告)日：2019-03-19
申请号：US15429810
申请日：2017-02-10
发明人： Takahiro Saeki
摘要： A motor controller includes an inverter including circuitry which supplies power to a motor, and a controller including circuitry which controls the inverter such that the circuitry of the inverter supplies an AC current to a first axis of a stationary orthogonal coordinate system in the motor while changing a frequency of the AC current. The first axis has a predetermined phase relationship with a phase voltage of the motor.
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公开(公告)号：US10218301B1
公开(公告)日：2019-02-26
申请号：US15865419
申请日：2018-01-09
发明人： Yebin Wang
摘要： A motor drive of an induction motor includes a motion controller to provide a reference signal and a memory to store a transformed model relating dynamics of a transformed state of the motor with measurements through parameters of transformed model including unknown parameters. The transformed state is a function of an electromagnetic state of the motor and parameters of transformed model. The dynamics of the transformed state is defined by a sum of components, each component is a linear function of the transformed state and at least one of the unknown parameters of the transformed model. The motor drive also include a motor controller to produce an estimate of speed and flux of the motor based on measurements and the transformed model, and to produce a reference voltage to track the reference signal based on the estimate of the speed and the flux of the motor.
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44.发明授权公开(公告)号：US10181812B2
公开(公告)日：2019-01-15
申请号：US14904901
申请日：2014-07-24
申请人： THALES
发明人： Arnaud Dal
摘要： A modular power bay for an aircraft comprises a plurality of electric machines, a plurality of inverters, and a control member configured to assign to at least one machine one or more inverters, according to the operational requirements of the plurality of machines. The control member comprises: an observer, able to measure phase currents and phase-neutral voltages of an electrical power supply signal of the machine, an estimator, able to determine a rotor position, based on the measurements of at least one observer, means for communicating, to each of the inverters: a control instruction for each of the inverters for responding to the operational requirement of said machine, measurements of at least one observer, or of the estimated rotor position.
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公开(公告)号：US10135373B2
公开(公告)日：2018-11-20
申请号：US15320354
申请日：2014-12-29
发明人： Myung Bok Kim , Sung Ho Lee , Bong Woo Kwak
摘要： An apparatus and a method for controlling a permanent magnet motor are provided. An apparatus for controlling a permanent magnet motor, according to an embodiment of the present invention, comprises: a current control unit for generating a control current so as to drive a motor according to an initial set current or a current corresponding to an estimated magnetic flux; a motor driving unit for driving the motor according to the control current of the current control unit; a measurement unit for measuring a driving voltage and current of the motor; and a magnetic flux estimation unit preliminarily driving the motor with the initial set current or the current corresponding to the estimated magnetic flux, so as to estimate the magnetic flux of the motor on the basis of the current measured when the motor is preliminarily driven and a voltage model of the motor according to the measured voltage, and adaptively controlling the magnetization current or demagnetization current of the motor such that the estimated magnetic flux is within an error range.
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公开(公告)号：US10103667B2
公开(公告)日：2018-10-16
申请号：US15162000
申请日：2016-05-23
发明人： Prerit Pramod , Julie A. Kleinau
IPC分类号： H02P21/24 , H02P21/00 , H02P29/024 , B62D5/04
摘要： A system for preventing controller windup in an electric motor includes a limiting module that determines a limited voltage command in response to a commanded voltage exceeding an available voltage of a motor power source, the limited voltage command is applied to an electric motor, a saturation parameter module that determines a saturation parameter based on the limited voltage command, the saturation parameter indicates a magnitude of the commanded voltage exceeding the available voltage, a non-linear processing module that processes the saturation parameter to generate a processed saturation parameter, and a reference current modifier module that generates a modified current command based on the processed saturation parameter, the modified current command is applied to the control system to improve the current command tracking.
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公开(公告)号：US10097120B2
公开(公告)日：2018-10-09
申请号：US15280204
申请日：2016-09-29
发明人： Prerit Pramod , Zhe Zhang , Nayeem Mahmud
摘要： An embodiment of a control system includes a pulse modulation module configured to generate a modulation signal controlling application of voltages to an electric motor, the modulation signal having a series of one or more successive pulses corresponding to a control cycle. The system also includes a current prediction module configured to receive a sampled electric current value from the electric motor taken at a sample time during a first control cycle n, predict a value of the electric current at a subsequent time related to an immediately following control cycle n+1 based on the sampled electric current value and a voltage applied to the motor during the first control cycle n, and output the predicted electric current value to the pulse modulation module. The system further includes a converter module configured to receive the modulation signal and output a voltage signal to the motor based on the modulation signal.
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公开(公告)号：US10079562B2
公开(公告)日：2018-09-18
申请号：US15565646
申请日：2016-03-21
发明人： Julian Roesner
CPC分类号： H02P1/46 , H02P21/0085 , H02P21/24 , H02P21/34 , H02P27/085
摘要： A method for switching on a multi-phase electrical machine in a motor vehicle, the multi-phase electrical machine having a rotor having a rotor winding, and a stator having a multi-phase stator winding; a phase voltage having a phase voltage vector being applied, in a PWM operating mode, to the stator winding, said vector corresponding in terms of absolute magnitude and direction to a pole wheel voltage vector of a pole wheel voltage; the rotor winding being energized by an excitation current; and the PWM operating mode being deactivated, and a block operating mode for application of the phase voltage being activated, when at least one parameter influencing the pole wheel voltage reaches a threshold value.
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公开(公告)号：US20180198397A1
公开(公告)日：2018-07-12
申请号：US15916945
申请日：2018-03-09
摘要： A method of determining angular position (0) of a rotor of an N-phase permanent magnet motor (PMM). A processor having an associated stored angular position determination (APD) algorithm is programmed to implement the algorithm to cause an associated motor controller to execute steps including forcing one vector at a time a phase vector set of current or voltage vectors to stator terminals of windings for the N-phases a positive and negative magnitude vector, wherein the vector magnitude is sufficiently small to not move the rotor, and a time duration for the forcing current or voltage vectors is essentially constant. The resulting stator current or voltage levels are measured for each current or voltage vector. An N-dimension current vector or voltage vector is generated from superposition of the resulting stator current levels or resulting stator voltage levels. The N-dimension current vector or voltage vector is used to determine angular position.
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公开(公告)号：US20180076749A1
公开(公告)日：2018-03-15
申请号：US15804825
申请日：2017-11-06
摘要： A method of controlling an electric motor (motor) includes providing a processor having an associated memory storing a stator resistance (Rs) estimation (RSE) algorithm that is programmed to implement the RSE algorithm to execute steps including injecting a current waveform at an arbitrary frame of reference into the stator using a field-oriented-control (FOC) motor controller including an Id controller and an Iq controller, and measuring current and voltage values from the motor responsive to the injecting. The measured current and voltage values are then transformed into transformed current and voltage values in a d/q coordinate system. The transformed current and voltage values are low pass filtered to generate filtered d/q current and voltage values, and a value for Rs is estimated from the filtered d/q current and voltage values. The arbitrary frame of reference can be a time-varying frame of reference.
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