基于新型双闭环与SVPWM控制策略的三相整流器研究

电压、电流双闭环控制方案在三相PWM整流器中得到了广泛的应用,但是由于网侧的电感参数值在使用过程中会有变化,以及传统的PWM控制策略下直流侧电压与功率存在波动较大的缺点,使得控制系统的性能提升受到限制,因此提出了基于一种新的电压电流双闭环和SVPWM调制的控制策略,该策略实现了在同步旋转dq坐标系下无电感L的电流解耦控制,仿真结果表明了该策略的正确性和可行性。

A Novel Double Closed Loops Control based SVPWM of the Three-phase Voltage-sourced Rectifier

The double closed loop control based current loop and outer voltage loop is a relatively common control strategy of the three-phase voltage-sourced PWM rectifier, In fact because of the variety of the input inductor and DC voltage and power fluctuations in the presence of the traditional disadvantages of larger PWM control strategy,So that improved the control performance is the limited. This paper proposed a novel double closed loop control strategy with SVPWM modulation module, which consists of decoupling current controller without exact value of inductance in d-q synchronous frame.The simulation analysis results demonstrate the validity of the proposed method and the feasibility of the control strategy.