公开(公告)号：US20240034297A1

公开(公告)日：2024-02-01

申请号：US18484628

申请日：2023-10-11

申请人： ZHEJIANG GEELY HOLDING GROUP CO., LTD. ,  GEELY AUTOMOBILE RESEARCH INSTITUTE (NINGBO) CO., LTD

发明人： Xianjun YE ,  Ou RUAN

IPC分类号： B60W10/08 ,  B60W30/188 ,  H02P21/30

CPC分类号： B60W10/08 ,  B60W30/188 ,  H02P21/30 ,  B60W2710/085

摘要： Disclosed are a bus current control method, a device, a system and a storage medium. The method includes: obtaining a data set including a motor speed corresponding to a current time point, an actual current and an actual torque; determining a limit current at the current time point according to the motor speed; in response to the limit current being less than the actual current, determining a deviation value at the current time point according to the limit current and the actual current; determining a target requested torque based on the deviation value and the actual torque; and determining the bus current according to the target requested torque.

公开(公告)号：US11296634B2

公开(公告)日：2022-04-05

申请号：US15682202

申请日：2017-08-21

申请人： Lakeview Innovation Ltd.

发明人： Damian Frick ,  Sébastien Mariéthoz ,  Marko Tanaskovic ,  David Lehmann

IPC分类号： H02K17/16 ,  H02P6/10 ,  H02P21/18 ,  H02P6/182 ,  H02P21/13 ,  H02P21/30 ,  H02P6/08 ,  H02P21/34

摘要： A method and system for sensorless determination of the orientation of the rotor of an ironless PMSM motor from a known rotor angle is described. The method and system include: specifying a rotor system according to the rotor angle; applying voltage pulses to the phases of the motor in the torque-forming direction of the rotor system; measuring the current in the phases of the motor; determining the expected back EMF along the flux-forming axis, based on the measured current; forming an integral of the expected back EMF by time integration of the expected back EMF along the flux-forming axis and/or a filter-based accumulation function; and determining the orientation of the rotor from the algebraic sign of the integral of the expected back EMF and/or the accumulation function.

公开(公告)号：US10978985B2

公开(公告)日：2021-04-13

申请号：US15998901

申请日：2017-02-14

申请人： VALEO SYSTEMES DE CONTROLE MOTEUR

发明人： Pierre-Alexandre Chauvenet

IPC分类号： H02P27/12 ,  H02P21/30 ,  H02P21/00

摘要： The control device includes: a unit for receiving, for a time period, phase voltage setpoints forming a setpoint vector in vector space; a unit for selecting at least N+1 states of the inverter which are associated, respectively, with at least N+1 predetermined vectors (M1 . . . M27) defining a volume in the vector space (Esp) containing the setpoint vector; a unit for controlling the inverter, over the time period, in order to place it successively in the selected states so that it substantially applies, on average over the time period, the phase voltage setpoints. The at least N+1 states of the inverter are selected from among groups of at least N+1 states of the inverter, the at least N+1 states of the inverter of at least one of the groups being associated, respectively, with at least N+1 predetermined vectors (M1 . . . M27), at least N of which are formed by predetermined zero-sum phase voltages and at least one of which is formed by predetermined nonzero-sum phase voltages.

公开(公告)号：US20200186071A1

公开(公告)日：2020-06-11

申请号：US16691784

申请日：2019-11-22

申请人： TRW Limited ,  TRW Automotive GmbH

发明人： David Moule ,  Luis Ayala ,  Albert Schwinn

IPC分类号： H02P21/30 ,  H02P21/00 ,  H02P21/22 ,  H02P27/12 ,  B62D5/04

摘要： A method of controlling a motor, for example of an electric power steering system, includes receiving a motor torque demand signal indicative of a torque required from the motor. A current demand signal indicative of the currents to be applied to each phase to meet the torque demand is generated from the motor torque demand signal. One or more operational values from the motor are determined. The current demand signal is set as a function of one or more parameters of the motor obtained by fitting a flux linkage model to the measured operational values. A motor circuit having the permanent magnet electric motor includes a control stage arranged to generate the current demand signal in response to a torque demanded of the motor. A modifying means modifies the magnitude and/or the phase of the current demanded for each phase of the motor by the controller.

公开(公告)号：US20200059184A1

公开(公告)日：2020-02-20

申请号：US16484926

申请日：2018-01-09

申请人： Nidec Corporation

发明人： Ahmad GHADERI

IPC分类号： H02P21/30 ,  B62D5/04

摘要： A motor controlling method includes a step of obtaining an armature magnetic flux, a resultant magnetic flux, a stator current, and a stator voltage, which are represented by a phasor, with respect to an α-β fixed coordinate system or a d-q rotating coordinate system, a step of calculating an angle (Φ) between the stator current and the stator voltage, a step of calculating a torque angle (δ) according to: δ=cos−1[(ψmψs−ψmLIs sin(Φ))/(ψs2+(LIs)2−2ψLIssin(ψ))], where L is an armature inductance, ψm indicates a magnetic flux of a rotor magnet, ψs indicates a magnitude of the resultant magnetic flux, and Is indicates a magnitude of the stator current, and a step of controlling the surface permanent magnet motor based on the torque angle (δ).

公开(公告)号：US20190341867A1

公开(公告)日：2019-11-07

申请号：US16511779

申请日：2019-07-15

申请人： DENSO CORPORATION

发明人： Makoto TANIGUCHI ,  Yuuki TAKAHASHI

IPC分类号： H02P21/30 ,  H02P27/12 ,  H02K21/04

摘要： A rotary electric machine is equipped with a stator and a rotor. The rotor has a d-axis magnetic circuit that is produced by a magnetomotive force of a field winding, and magnet magnetic circuits that are produced by a magnetic force of permanent magnets. The d-axis magnetic circuit and a q-axis magnetic circuit have at least a part thereof that is common to both. The permeance of the d-axis magnetic circuit is smaller than the permeance of the q-axis magnetic circuit, when a load is being applied to the rotor. A control apparatus of the rotary electric machine has a switching circuit that controls the field current in the field winding, and a control section that makes the switching frequency of the switching circuit become higher when the field current is above a threshold value than when the field current is less than or equal to the threshold value.

公开(公告)号：US20190319567A1

公开(公告)日：2019-10-17

申请号：US16385556

申请日：2019-04-16

申请人： THE REGENTS OF THE UNIVERSITY OF MICHIGAN

发明人： Heath F. HOFMANN

IPC分类号： H02P21/30 ,  H02P21/22

摘要： A brushless, self-excited synchronous field winding machine is presented. The AC stator is configured with four or more phases to produce independent magnetic fields at different spatial harmonics. Windings in the rotor are configured to magnetically couple to the different spatial harmonics produced by the AC stator. More specifically, an oscillating field generated by the stator magnetically couples to the excitation winding on the rotor. This induces an AC voltage which results in current flowing through the field winding of the rotor. The magnitude of the field current is therefore controlled by the magnitude of the oscillating field. The AC stator also produces a magnetic field at a different spatial harmonic which magnetically couples to field winding of the rotor. This component will interact with the field current to produce torque. With this approach, the power density of the electric machine is significantly increased as compared to conventional field winding designs.

公开(公告)号：US20190149079A1

公开(公告)日：2019-05-16

申请号：US16097361

申请日：2016-11-30

申请人： SEG Automotive Germany GmbH

发明人： Julian ROESNER

IPC分类号： H02P27/12 ,  H02P21/22 ,  H02P21/30 ,  H02P25/22

CPC分类号： H02P27/12 ,  H02P3/18 ,  H02P21/22 ,  H02P21/30 ,  H02P23/0027 ,  H02P23/20 ,  H02P25/024 ,  H02P25/22 ,  H02P27/06 ,  H02P27/08

摘要： The invention relates to a method for switching off a multi-phase electric machine (110) in a motor vehicle, the multi-phase electric machine (110) comprising a rotor having a rotor winding (101) and a stator having a multi-phase stator winding (110a), wherein in a block mode (210) of the electric machine (110) a parameter influencing a pole wheel voltage vector (Up) of a pole wheel voltage is adjusted such that the pole wheel voltage reaches a first threshold value (S1), wherein the block mode (210) is deactivated when the first threshold value (S1) is reached and a PWM mode (220) for applying a phase voltage with a phase voltage vector (Us) is activated, wherein the phase voltage vector (Us) and the pole wheel voltage vector (Up) are varied in PWM mode (220) until the parameter influencing the pole wheel voltage reaches a further threshold value (S2), wherein the phase voltage is switched off when the further threshold value (S2) is reached. Furthermore, the invention relates to a computing unit (112) configured to carry out the method.

公开(公告)号：US4918367A

公开(公告)日：1990-04-17

申请号：US306167

申请日：1989-02-06

申请人： Pasi Pohjalainen

发明人： Pasi Pohjalainen

IPC分类号： H02P20060101 ,  H02P21/30 ,  H02P23/30

CPC分类号： H02P23/30 ,  H02P21/30

摘要： The present invention relates to a method for controlling an ac motor supplied by an inverter having several switches. In order that the torque can be adjusted to be as desired as rapidly as possible both with maximum voltage and in the vicinity thereof, one proceeds in accordance with the invention in such a way that a value (.DELTA..gamma.) representing the difference between the reference value and actual value of the angle between the stator flux and rotor flux of the motor is determined on the basis of a value representing the requirement for torque change of the motor, e.g. by means of the difference (.DELTA.T) between the reference valve (T*) and actual valve (T) of the torque, and a quantity representing the magnetic state of the motor, the next switching moment of the switches of the inverter, i.e. the so called limit between flux sectors (.DELTA..phi.), is shifted with a first quantity (k.sub.1 .DELTA..gamma.) proportional to the determined differential value to change the angle (.gamma.) between the stator flux and the rotor flux, i.e. the torque of the motor, in a stepwise manner to be as desired, and that switching moment of the switches of the inverter which is next in turn is shifted with second quantity (k.sub.2 .DELTA..gamma.) proportional to the determined differential value and reverse to the first quantity (k.sub.1 .DELTA..gamma.) to change the rotating speed of the stator flux.

摘要翻译： 本发明涉及一种用于控制由具有多个开关的逆变器提供的交流电动机的方法。 为了使扭矩能够尽可能快地按最大的电压及其附近尽可能快地进行调节，根据本发明，转矩可以以表示参考值之间的差值（DELTA gamma）的方式进行 基于表示电动机转矩变化要求的值来确定电动机的定子磁通和转子磁通之间的角度的值和实际值，例如 通过转矩的参考阀（T *）和实际阀（T）之间的差（DELTA T）和表示电动机磁状态的量，逆变器开关的下一个转换时刻，即 磁通扇区（DELTA phi）之间的所谓限制以与所确定的微分值成比例的第一量（k1 DELTA gamma）移位，以改变定子磁通和转子磁通之间的角度（γ），即 电动机，按照期望的逐步方式，并且接下来的逆变器的开关的开关力矩随着与所确定的差分值成比例并与第一量（k1）成反比的第二量（k2 DELTA伽马）而偏移 DELTA伽马）来改变定子磁通的转速。

公开(公告)号：US20240291410A1

公开(公告)日：2024-08-29

申请号：US18589010

申请日：2024-02-27

申请人： Tula eTechnology, Inc.

发明人： Paul CARVELL ,  Benjamin M. WOLK ,  Matthew A. YOUNKINS

IPC分类号： H02P21/30 ,  H02P21/18 ,  H02P27/06

CPC分类号： H02P21/30 ,  H02P21/18 ,  H02P27/06 ,  H02P2207/05

摘要： An electric machine is provided. A polyphase machine comprising at least one of an induction machine and an externally excited synchronous machine is provided. A power inverter is electrically connected to the polyphase machine. An inverter controller is electrically connected to the power inverter, wherein the inverter controller is configured to provide a torque command, wherein the torque command provides a torque signal to provide a plurality of pulses that pulse between a first demand torque level and a second demand torque level, wherein the second demand torque level is lower in amplitude than an amplitude of the first demand torque level and control an id provided by the power inverter, so that when the torque signal is at the first demand torque level, rotor flux strictly increases and when the torque signal is at the second demand torque level, rotor flux strictly decreases.