基于旋转坐标变换的单相电压型PWM整流器系统仿真

为了抑制网侧电流静差，改善调制波输出质量，文章讨论了一种基于旋转坐标变换的单相电压型PWM整流器d—q轴电流矢量控制策略。采用单极性SPWM调制方式，并考虑单相系统的特殊性，通过构建正交虚拟电流完成网侧电流的旋转坐标变换，以实现对网侧电流的矢量控制。在Matlab2007a／Simulink环境下建立了控制系统的仿真模型，详细讨论了各主要模块的搭建方法，并在此基础上给出了仿真结果。仿真结果表明，基于旋转坐标变换的单相PWM整流器d—q轴电流矢量控制策略的可行性，以及其对交流量误差调节的有效性。

Simulation of Single-Phase PWM VSR with Synchronous Reference Rotating Frame

To restrain the static error of AC current and improve the modulation output, this paper presents a current vector control algorithm based on d-q synchronous reference rotating frame for single-phase PWM VSR. Considering the characteristics of single-phase system, the rotating transformation has been completed with the construction of orthogonal virtual current vector. Single-polar SPWM is also used in the control system. The simulation of the control system is con structed in Matlab2007a/Simulink and the construction methods of main modules are discussed in detail. The simulation results show that the current vector control algorithm based on d - q synchronous rotating frame is effective and feasible.