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典型HEV逆变器中的全桥式驱动器能将直流电池电压转换为三相交流电压,以驱动与传动系连接的交流电机(见图1)。测量逆变器的相电流后,可使用测量结果来控制脉宽调制(PWM)逆变器开关(通常为IGBT)。逆变器控制回路需要具有高精度和高带宽的电流传感器IC,以最大限度提高电机扭矩
A full-bridge driver in a typical HEV inverter converts the DC battery voltage into a three-phase AC voltage to drive the AC motor connected to the driveline (see Figure 1). After measuring the phase current of the inverter, the measurement results can be used to control the PWM inverter switch (usually IGBT). Inverter control loops require current sensor ICs with high accuracy and high bandwidth to maximize motor torque