公开(公告)号：WO2014048284A1

公开(公告)日：2014-04-03

申请号：PCT/CN2013/083977

申请日：2013-09-23

Applicant: SHENZHEN BYD AUTO R&D COMPANY LIMITED ,  BYD COMPANY LIMITED

Inventor： LUO, Hui ,  DU, Zhiyong ,  ZHOU, Xuguang ,  ZHANG, Xinxin ,  CHEN, Xing ,  XIAO, Kai ,  CHENG, Lipin

IPC: H02P6/18

CPC classification number: H02P6/12 ,  H02P6/182 ,  H02P6/34

Abstract: A method for checking an out-of-step of a synchronous motor includes: detecting electric degrees of the synchronous motor, in which the electric degrees comprise at least a first electric degree and a second electric degree detected at a preset interval, and the second electric degree is detected after the first electric degree; comparing the first electric degree with the second electric degree to obtain a comparing result; and determining that the synchronous motor is out of step when the comparing result satisfies a preset requirement. It is determined that the synchronous motor is out of step when the electric degree keeps unchanged or decreases progressively, or an increment of the electric degree is very small.

Abstract translation: 用于检查同步电动机的失步的方法包括：检测同步电动机的电度，其中电度至少包括以预设间隔检测的第一电度和第二电度，第二 在第一电度之后检测电度; 将第一电度与第二电度进行比较以获得比较结果; 并且当比较结果满足预设要求时，确定同步电动机不合格。 当电度保持不变或逐渐减小时，同步电动机不合格，或者电度的增量非常小。

公开(公告)号：WO2013143439A1

公开(公告)日：2013-10-03

申请号：PCT/CN2013/073189

申请日：2013-03-26

Applicant: SHENZHEN BYD AUTO R&D COMPANY LIMITED ,  BYD COMPANY LIMITED

Inventor： DU, Zhiyong ,  CHEN, Xing ,  XIAO, Kai

IPC: H02P6/06 ,  H02P6/08 ,  H02P6/04 ,  H02P21/00

CPC classification number: H02P21/0035 ,  H02P21/0003 ,  H02P21/0021 ,  H02P21/22

Abstract: A method for controlling a rotation rate of an electric motor is provided. The method comprises following steps: judging whether an absolute value of a difference between an objective rotation rate of the electric motor and an actual rotation rate of the electric motor is greater than or equal to a predetermined value; and if yes, compensating a q axis current of the electric motor to adjust the rotation rate.

Abstract translation: 提供了一种用于控制电动机的转速的方法。 该方法包括以下步骤：判断电动机的目标转速与电动机的实际转速之差的绝对值是否大于或等于预定值; 如果是，则补偿电动机的q轴电流来调整转速。