公开(公告)号：US20150207444A1

公开(公告)日：2015-07-23

申请号：US14159963

申请日：2014-01-21

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Yo Chan Son ,  Bon Ho Bae ,  Steven E. Schulz ,  Leah Dunbar

IPC: H02P6/16

CPC classification number: H02P6/16 ,  B60L3/0038 ,  B60L50/15 ,  B60L2240/421 ,  B60L2270/145 ,  Y02T10/642 ,  Y02T10/7077 ,  Y02T10/7258

Abstract: A vehicle includes a motor having a rotor shaft, a transmission having a gear set directly or selectively connected to the motor, a resolver circuit, and a controller. The resolver circuit includes a resolver that measures an absolute position of the shaft, and a resolver-to-digital converter (RDC) which receives the absolute position and generates, via a tracking loop, a raw position signal. The controller includes recorded predetermined frequency characteristics of the RDC and method instructions which cause the controller to receive the raw position signal from the RDC and create a lookup table describing position wobble. The controller compensates for the position wobble at all rotational speeds of the rotor shaft by applying the predetermined frequency characteristics to the position wobble to derive a compensated position signal. The controller also uses the compensated position signal to control an operation of the electric motor.

Abstract translation: 车辆包括具有转子轴的电动机，具有直接或选择性地连接到电动机的齿轮组的变速器，旋转变压器电路和控制器。 解算器电路包括测量轴的绝对位置的解算器和接收该绝对位置的分解器 - 数字转换器（RDC），并且经由跟踪环路产生原始位置信号。 控制器包括记录的RDC的预定频率特性和方法指令，使得控制器从RDC接收原始位置信号并创建描述位置摆动的查找表。 控制器通过将预定的频率特性施加到位置摆动来补偿转子轴的所有转速下的位置摆动，以导出补偿位置信号。 控制器还使用补偿位置信号来控制电动机的操作。

公开(公告)号：US10340819B2

公开(公告)日：2019-07-02

申请号：US15142416

申请日：2016-04-29

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Daniel J. Berry ,  Wei D. Wang ,  Bon Ho Bae ,  Brian A. Welchko ,  Wesley G. Zanardelli ,  Melissa R. McNeely

IPC: B60L3/00 ,  B60L3/04 ,  H02H3/02 ,  H02H7/08 ,  H02H7/09 ,  H02P3/12 ,  H02P29/024

Abstract: A torque system includes a DC power device, a polyphase electric machine, a contactor pair, a power inverter module (PIM), and a controller. The PIM connects to the power device via the contactor pair and directly connects to the electric machine. The controller executes a method to control a fault response under a fault condition resulting in opening of the contactor pair and a polyphase short condition. The controller calculates a back EMF of the electric machine and transmits switching control signals to semiconductor switches of the PIM to transition from the polyphase short condition to a polyphase open condition only when the calculated back EMF is less than a calibrated value and a voltage rise on a DC side of the PIM is less than a calibrated voltage rise. A vehicle includes the DC power device, road wheels, electric machine, PIM, and controller.

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：US20160141983A1

公开(公告)日：2016-05-19

申请号：US14541177

申请日：2014-11-14

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Jung Sik Yim ,  Jihoon Jang ,  Bon Ho Bae ,  Milan A. Vadera

IPC: H02P6/00

CPC classification number: H02P27/08 ,  H02P21/0089

Abstract: A voltage source inverter controller for controlling an inverter electrically connected to an electric machine includes a current command generator, a six-step flux controller and a current regulator. The six-step flux controller generates a flux modifier to regulate flux in a flux-weakening speed/load operating region of the electric machine when operating the electric machine in a six-step mode. The current command generator converts a desired torque to three-phase desired currents that are input to a dq0-dq transformer and combined with the flux modifier to determine a modified-flux direct-quadrature (dq) current request. The current regulator includes a proportional-integral feedback controller, anti-windup elements, a dq voltage limit element and a voltage magnitude limiter. The proportional-integral feedback controller and the anti-windup elements perform closed-loop current control on the modified-flux dq current request to determine commanded dq voltages.

Abstract translation: 用于控制与电机电连接的逆变器的电压源逆变器控制器包括电流指令发生器，六级通量控制器和电流调节器。 六步磁通控制器在六步模式下操作电机时产生磁通量调节器，以调节电机的磁通弱化速度/负载运行区域内的通量。 电流指令发生器将期望的转矩转换为输入到dq0-dq变压器的三相期望电流，并与磁通调节器组合以确定修正磁通直接正交（dq）电流请求。 电流调节器包括比例积分反馈控制器，防饱和元件，dq限压元件和电压幅度限制器。 比例积分反馈控制器和防饱和元件对修正磁通dq电流请求执行闭环电流控制，以确定指令的dq电压。