The invention discloses a motor active short circuit control circuit and a driving method thereof. The circuit comprises a driving power supply, an active short-circuit driving circuit, a first driving circuit, a second driving circuit, a first bridge arm circuit, a second bridge arm circuit, a first detection circuit and a second detection circuit, the driving power supply provides low-voltage voltage signals for the first driving circuit and the second driving circuit; the first detection circuit obtains first state information of each transistor in the first bridge arm circuit; the second detection circuit obtains second state information of each transistor in the second bridge arm circuit; the active short-circuit driving circuit obtains a voltage signal of a three-phase bus of the motor and a power-down signal of a low-voltage power supply, and respectively provides a driving control signal for the first driving circuit and the second driving circuit according to the voltage signal and the electric signal; the first driving circuit drives each transistor in the first bridge arm circuit to be switched on or switched off according to the driving control signal and the first state information; and the second driving circuit drives each transistor in the second bridge arm circuit to be switched on or switched off according to the driving control signal and the second state information.
本发明公开了一种电机主动短路控制电路及其驱动方法。该电路包括驱动电源、主动短路驱动电路、第一及第二驱动电路、第一及第二桥臂电路、第一及第二检测电路;驱动电源为第一及第二驱动电路提供低压电压信号;第一检测电路获取第一桥臂电路中各晶体管的第一状态信息;第二检测电路获取第二桥臂电路中各晶体管的第二状态信息;主动短路驱动电路获取电机三相母线的电压信号以及低压电源的掉电信号,并根据电压信号和电信号分别向第一及第二驱动电路提供驱动控制信号;第一驱动电路根据驱动控制信号和第一状态信息,驱动第一桥臂电路中各晶体管的导通或断开;第二驱动电路根据驱动控制信号和第二状态信息,驱动第二桥臂电路中各晶体管的导通或断开。
Motor active short circuit control circuit and driving method thereof
一种电机主动短路控制电路及其驱动方法
2021-10-08
Patent
Electronic Resource
Chinese
IPC: | B60L PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES , Antrieb von elektrisch angetriebenen Fahrzeugen |
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