Control circuit, electric driving system, inverter system and control method thereof

• Main Authors: LI CHENGZHE, MINESAWA RYUTARO
• Format: Patent
• Language: Chinese; English
• Published: 30.06.2020
• Subjects: APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC,OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWERSUPPLY SYSTEMS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORSOR DYNAMO-ELECTRIC CONVERTERS; CONTROL OR REGULATION THEREOF; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUTPOWER; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER; ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR; ELECTRICITY; EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS; GENERATION; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS; PRINTED CIRCUITS

The invention relates to a control circuit, an electric driving system, an inverter system and a control method thereof. The temperature of inverters and power semiconductor devices is detected at high speed and with high accuracy. The electronic control circuit includes a vector instruction circuit for calculating an efficiency value of an inverter corresponding to a torque instruction value, anda temperature estimation circuit for estimating a temperature of the power semiconductor element based on the efficiency value of the inverter and a duty cycle for driving the power semiconductor element constituting the inverter. 本公开涉及控制电路、电驱动系统、逆变器系统及其控制方法，用于高速且高准度地检测逆变器和功率半导体器件的温度。电子控制电路包括：矢量指令电路，用于计算与转矩指令值相对应的逆变器的效率值；以及温度估计电路，用于基于逆变器的效率值和用于驱动构成逆变器的功率半导体元件的占空比，来估计功率半导体元件的温度。