一种具有阻感负载的三相混合电压型整流器及其控制

A Three-phase Hybrid Voltage Source Rectifier with Resistance-inductance Load and Its Control

对一种三相混合电压型PWM整流器进行了研究。根据拓扑结构分别建立了Boost变换器和PWM整流器的EL(Euler-Lagrange)数学模型,基于三相混合电压型整流器的无源性,采用一种外环采用PI控制,内环采用无源控制的无源混合控制方案。该无源混合控制器具有更好动静性能,更优秀的电流跟踪效果,鲁棒性好,易于实现的特点,优于现行的其他控制策略。仿真验证了该无源混合控制器在整流器带阻感负载情况下运行的可行性。

In this paper a three-phase hybrid voltage source rectifier with resistance-inductance load is studied. According to the topology, the Euler-Lagrange mathematical models of the boost type DC-DC convertor and PWM rectifier are designed. Based on the models’ passivity, a hybrid control strategy based on PI control on the voltage loop and passivity-based control on the current loop is proposed. The hybrid control strategy has good current tracking ability, strong robustness and is easy to implement. The hybrid control strategy is proved feasible by the simulation result in the situation of running with resistance-inductance load.