公开(公告)号：WO2013068158A3

公开(公告)日：2013-08-22

申请号：PCT/EP2012067967

申请日：2012-09-13

Applicant: BOSCH GMBH ROBERT ,  MERTEN MARKUS ,  RAICHLE DANIEL

Inventor： MERTEN MARKUS ,  RAICHLE DANIEL

IPC: B60L15/00 ,  B60L3/00 ,  B60L3/04 ,  B60L7/00 ,  B60L11/18 ,  B60L15/12 ,  H02P27/06

CPC classification number: H02P6/18 ,  B60L3/0061 ,  B60L3/04 ,  B60L7/003 ,  B60L11/14 ,  B60L11/1803 ,  B60L15/007 ,  B60L15/12 ,  B60L2210/42 ,  B60L2240/421 ,  B60L2240/429 ,  B60L2240/529 ,  B60L2260/24 ,  H02P6/28 ,  H02P27/06 ,  H02P29/02 ,  Y02T10/645 ,  Y02T10/70 ,  Y02T10/7005 ,  Y02T10/7077 ,  Y02T10/7241

Abstract: The invention relates to a method for controlling an electrical machine (10) by means of an inverter (12), in particular for use in a motor vehicle, wherein the inverter (12) has a plurality of controllable circuit breakers (14) which are designed to convert a DC voltage from a voltage source (22), which is coupled to the circuit breakers (14), into an AC voltage for supplying electrical energy to the electrical machine (10), wherein the electrical machine (10) is then switched to a freewheeling mode (32) by opening all the circuit breakers (14) of the inverter (12), wherein a phase current of the electrical machine (10) is detected, wherein the electrical machine (10) is switched from the freewheeling mode (32) to a short-circuit mode (36) as a function of a comparison (34) of the phase current, or of a first variable which is derived from the phrase current, with a first reference value, wherein the circuit breakers (14) which are associated with a first potential of the voltage source (22) are closed in the short-circuit mode (32) and wherein the circuit breakers (14) which are associated with a second potential of the voltage source (22) are opened, and wherein the electrical machine (10) is switched from the short-circuit mode (36) to the freewheeling mode (32) as a function of a comparison (38) of the phrase current, or of a second variable which is derived from the phrase current, with a second reference value.

Abstract translation: 本发明涉及一种由逆变器（12）的装置驱动电动机（10），特别是用于在机动车辆的方法，其特征在于，具有多个适于将直流电压可控电源开关（14）的逆变器（12） 一个与所述断路器（14），耦合到电压源（22）到用于所述电机（10）的供给的交流电压为在最初由逆变器（12）的打开所有电源开关（14）转换为电能，其特征在于，所述电机（10） 一个自由运行模式（32）进行切换，其中，检测所述电机（10）的相电流，其特征在于，从在短路操作（36）的自由运行模式（32）或在一个相电流的比较（34）的功能的电动机（10） 首先从相电流幅度导出的电流被切换到第一参考值，其中在短路中 操作（32），其被分配到所述电压源（22）的一个第一电势的电源开关（14），闭合时，并且其中，与所述电压源（22）的第二电势相关联的功率开关（14）被打开，且其中所述 从在相电流或者与第二参考值的相电流值的二阶导数的比较（38）的功能的自由运行模式（32）的短路操作（36）的电机（10）被切换。