PWM整流器EL模型无源性控制策略

Controller Designing of PWM Rectifier Based on the EL Passivity Model

建立了PWM整流器基于开关状态函数的电磁暂态数学模型,设计了改进后的基于EL模型的PWM整流器无源控制器。为消除系统参数变化对控制性能的影响,将整流器直流侧电压实时反馈至控制系统,利用微调PI调节后对计算出来的有功分量进行补偿,得到最终d轴有功参考分量,从而消除系统稳态误差。最后在Matlab中建立了仿真系统,仿真结果验证了本文所设计的无源控制器的正确性。

The electromagnetic transient mathematical model of the PWM rectifier based on the switch state function is established and modified PWM rectifier passive controller based on EL is designed in this paper. To eliminate the influence of system parameters variations on the control performance, real-time feedback the DC voltage of the rectifier to the control system and then compensate the active power which has been calculated by fine tuning PI regulation, so the final active power reference component of the d axis is get, thereby eliminating the system steady-state error. Finally, the simulation system is established in the MATLAB, and the simulation results verify the validity of the passive controller designed in this paper.