The invention relates to an inverter (10) for an electric machine (100), said inverter (10) having a half-bridge circuit (20) with switches (22) and a control unit (30) for actuating the switches (22) of the half-bridge circuit (20), wherein the control unit (30) is designed to detect a fault situation of the electric machine (100) and/or the inverter (10). One aspect of the invention is that the control unit (30) is designed to switch the half-bridge circuit (20) to a multiple short-circuit in the event of a fault, wherein the inverter (30) further has an isolation switch (40) for isolating the inverter (10), in particular the half-bridge circuit (20), from a supply voltage (50), and the control unit (30) is set up to open the isolation switch (40) before the multiple short circuit of the switching half-bridge circuit (20). The invention also relates to the electric machine (100) having the inverter (10) according to the invention and to a steering system having the electric machine (100) according to the invention.
本发明涉及用于电机(100)的逆变器(10),其中逆变器(10)具有带开关(22)的半桥电路(20)和用于操控半桥电路(20)的开关(22)的控制单元(30),且其中控制单元(30)被设立为识别电机(100)和/或逆变器(10)的故障情况。本发明的一个方面在于:控制单元(30)被设立为在故障情况下将半桥电路(20)切换到多重短路,且其中逆变器(30)还具有隔离开关(40),用于将逆变器(10)、尤其半桥电路(20)与供电电压(50)隔离,且其中控制单元(30)被设立为在切换半桥电路(20)的多重短路之前将隔离开关(40)断开。本发明还涉及具有按照本发明的逆变器(10)的电机(100)以及具有按照本发明的电机(100)的转向系统。
Inverter for electric machine, electric machine having such inverter, and steering system having such electric machine
用于电机的逆变器、具有这种逆变器的电机及具有这种电机的转向系统
2021-12-28
Patent
Electronic Resource
Chinese
IPC: | H02H EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS , Schutzschaltungsanordnungen / B62D MOTOR VEHICLES , Motorfahrzeuge / H02M APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS , Anlagen zur Umformung von Wechselstrom in Wechselstrom, von Wechselstrom in Gleichstrom oder umgekehrt, oder von Gleichstrom in Gleichstrom und zur Verwendung in Netzen oder ähnlichen Stromversorgungssystemen / H02P CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS , Steuern oder Regeln von elektrischen Motoren, elektrischen Generatoren, dynamoelektrischen Umformern |
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Inverter for an electric machine and method for operating an inverter for an electric machine
European Patent Office | 2017
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