公开(公告)号：US20180358916A1

公开(公告)日：2018-12-13

申请号：US15618573

申请日：2017-06-09

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Yo Chan Son ,  Si-hyung Lee ,  Aayush Gupta

IPC: H02P27/08 ,  H02M7/5395 ,  H02M1/08 ,  G10K9/12

CPC classification number: H02P27/08 ,  G10K9/12 ,  H02M1/08 ,  H02M7/5395

Abstract: A motor drive system for controlling operation of an electric machine is described. An inverter includes paired power transistors that are electrically connected to the electric machine, wherein the inverter is electrically connected to a DC power source via a high-voltage electrical power bus. A motor controller includes a first controller and an acoustic signal generator, wherein the first controller is disposed to control the paired power transistors of the inverter. The first controller determines an initial output voltage based upon a torque command and the acoustic signal generator is disposed to generate a sound injection voltage. The motor controller combines the initial output voltage and the sound injection voltage. The motor controller generates PWM commands to control the paired power transistors of the inverter, wherein the PWM commands are determined based upon the initial output voltage and the sound injection voltage.

公开(公告)号：US09774287B1

公开(公告)日：2017-09-26

申请号：US15210179

申请日：2016-07-14

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Dwarakanath V. Simili ,  Bon Ho Bae ,  Aayush Gupta

IPC: H02P21/00 ,  H02K1/14 ,  H02K1/27

CPC classification number: H02P21/0089

Abstract: An electric machine assembly includes an electric machine having a stator configured to have a stator current and a controller configured to receive a torque command (T). The controller has a processor and tangible, non-transitory memory on which is recorded instructions for executing a method of modifying the stator current for enhanced flux weakening. The controller is programmed to obtain a base stator current [IdLU, IqLU] from a look-up table based at least partially on the torque command (T). The controller is programmed to obtain a characteristic angle (θi, i=1, 2, 3) based at least partially on a value of the torque command (T) and the base stator current [IdLU, IqLU]. A stator current modifier [ΔId, ΔIq] is obtained based at least partially on the characteristic angle (θi, i=1, 2, 3) and a flux weakening factor (ΔIS) such that: ΔId=(ΔIS*cosine (θi)) and ΔIq=(ΔIS*sine (θi)).

公开(公告)号：US20170077854A1

公开(公告)日：2017-03-16

申请号：US14854171

申请日：2015-09-15

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Yo Chan Son ,  Brian A. Welchko ,  Dwarakanath V. Simili ,  Mohammad Faizul Momen ,  Aayush Gupta ,  Chia-Chou Yeh

IPC: H02P21/00 ,  H02P27/08 ,  H02P6/10

CPC classification number: H02P6/10 ,  H02P21/22

Abstract: A multi-phase electric machine electrically connected to an inverter is described. A method for controlling the electric machine includes determining an initial current command responsive to a torque command for the electric machine and determining an expected torque ripple associated with operation of the electric machine. A mitigation current command is determined based upon the torque command and the expected torque ripple, and the electric machine is dynamically controlled responsive to the initial current command and the mitigation current command.

Abstract translation: 描述了电连接到逆变器的多相电机。 一种用于控制电机的方法包括：响应于电机的转矩指令确定初始电流指令，并确定与电机操作相关的预期转矩脉动。 根据转矩指令和预期的转矩波动来确定减轻电流指令，并且响应于初始电流指令和缓解电流指令动态控制电机。

公开(公告)号：US10193489B2

公开(公告)日：2019-01-29

申请号：US15618573

申请日：2017-06-09

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Yo Chan Son ,  Si-hyung Lee ,  Aayush Gupta

IPC: H02P27/08 ,  H02M7/5395 ,  H02M1/08 ,  G10K9/12

Abstract: A motor drive system for controlling operation of an electric machine is described. An inverter includes paired power transistors that are electrically connected to the electric machine, wherein the inverter is electrically connected to a DC power source via a high-voltage electrical power bus. A motor controller includes a first controller and an acoustic signal generator, wherein the first controller is disposed to control the paired power transistors of the inverter. The first controller determines an initial output voltage based upon a torque command and the acoustic signal generator is disposed to generate a sound injection voltage. The motor controller combines the initial output voltage and the sound injection voltage. The motor controller generates PWM commands to control the paired power transistors of the inverter, wherein the PWM commands are determined based upon the initial output voltage and the sound injection voltage.