公开(公告)号：US20160276969A1

公开(公告)日：2016-09-22

申请号：US14664448

申请日：2015-03-20

Applicant: DELPHI TECHNOLOGIES, INC.

Inventor： RONALD J. KREFTA

IPC: H02P21/00 ,  H02P29/00

CPC classification number: H02P29/032 ,  G01R31/343 ,  G01R35/005 ,  H02P27/06 ,  H02P29/68

Abstract: A system configured to operate an electric motor and correct for current measurement errors present in current sensors used by the system includes a plurality of voltage drivers, a plurality of current sensors, and a controller. Each of the plurality of voltage drivers is electrically coupled to each phase of a motor. Each of the plurality of current sensors is each configured to measure current in each phase of the motor. The controller is configured to sample a current-signal from each current sensor, and determine a baseline-offset error of each current sensor based on a plurality of samples of the current-signal from each current sensor while the motor is rotating.

Abstract translation: 配置为操作电动机并且校正由系统使用的电流传感器中存在的当前测量误差的系统包括多个电压驱动器，多个电流传感器和控制器。 多个电压驱动器中的每一个电耦合到电动机的每个相。 多个电流传感器中的每一个被配置成测量电动机每相中的电流。 控制器被配置为从每个电流传感器采样当前信号，并且在马达旋转时，基于来自每个电流传感器的当前信号的多个采样来确定每个电流传感器的基线偏移误差。

公开(公告)号：US20140350871A1

公开(公告)日：2014-11-27

申请号：US13899065

申请日：2013-05-21

Applicant: Delphi Technologies, Inc.

Inventor： RONALD J. KREFTA

IPC: G01R19/25 ,  G01R21/133

CPC classification number: G01R19/2513 ,  G01R21/133 ,  H02M7/5387 ,  H02M2001/327

Abstract: A method to estimate power dissipation of an inverter configured to control electric energy to an electric machine. The method can estimate both conductive power losses and switched power losses of a transistor or a diode in a power switch or driver stage of the inverter. The estimation includes applying a correction factor (CF) to power dissipation calculations if the modulation index of the inverter is greater than a threshold indicating that the inverter is being over-driven or operated in a non-linear region.

Abstract translation: 一种用于估计被配置为向电机控制电能的逆变器的功率消耗的方法。 该方法可以估计逆变器的功率开关或驱动级中的晶体管或二极管的导通功率损耗和开关功率损耗。 如果逆变器的调制指数大于指示逆变器在非线性区域中被过驱动或操作的阈值，则估计包括对功率耗散计算应用校正因子（CF）。