采用电流滞环调节器的电压矢量控制PWM整流器系统

提出了一种性能良好的电压矢量控制PwM整流器方法.根据dq坐标系下整流器数学模型,用控制整流器系统中有功和无功功率的方法间接控制相互有耦合的输入有功和无功电流分量.控制系统电压外环用PI调节器输出有功指令电流分量,反馈输入电流与指令电流的误差作为两个电流滞环调节器的输入.滞环输出经过开关逻辑表选择出合适的电压矢量,不需计算开关作用时间,控制整流器输入电压和电流同相位,输入电流正弦化.仿真和实验结果证明了该控制方法简单,动态性能好,易实现.

Voltage Vector-Controlled PWM Rectifier System with Current Hysteresis Regulators

The method of voltage vector-controlled PWM rectifier system with hysteresis current regulators is presented. According to mathematical model of rectifier under dq coordinates. This method can indirectly control the active current and reactive current components by using active power and reactive pewer. The output of voltage external loop with PI regulator is considered as current component of active power, and the error of feedback input current and instruction current is considered as input of two inner loops current hysteresis regulators. The output of hysteresis regulator selects the correct vector by voltage vector switch logic table, not to calculate switch operation time to make input voltage and input current of rectifier in phase, input current be sine. The simulation and experimental results prove that it is simple and has good dynamic characteristics.