建立了基于功率变换器的有源式超级电容器-蓄电池混合储能系统的模型，并对控制环节进行了设计，提出了一种在脉动负载下蓄电池恒流输出的控制策略。
A mathematical model of the actively controlled battery-ultracapacitor hybrid energy storage system based on a power converter was set up, and the control loop was designed.
为了可靠运行，必须降低转速的波动，即必须有效抑制负载转矩脉动和电机电磁转矩脉动带来的转速波动。
In order to have a reliable operation, must reduce the speed fluctuation, namely must effectively restrain the load torque ripple and motor electromagnetic torque ripple of speed fluctuation bring.
设计电压型PW M变频器时死区时间的设定会造成输出谐波增加、负载电动机转矩脉动，严重时甚至引起电动机震荡。
In the design of voltage PWM inverter, the existence of dead-time will arouse the in-crease of output harmonic, the pulsation of the motor torque, and even the oscillation of the motor.
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