摘要
针对大部分基于LCL滤波的有源电力滤波器控制策略需要阻尼环节的问题,提出一种基于LCL滤波器离散模型的预测电流控制方法,与重复预测器结合,得出超前一拍的控制量,无需谐振阻尼环节,控制器结构简单。最后建立了仿真模型并与采用预测电流控制的基于L滤波的有源电力滤波器进行了对比,结果表明所提出的方法可以使基于LCL滤波的有源电力滤波器实现高性能的补偿,补偿后的电源侧电流总谐波畸变率低,且动态性能优良。
Damping is needed in most control methods of LCL-based active power filter,aiming at this problem,a predictive current control method was proposed i＇or LCL-based active power filter based on its discrete model. One step ahead control law is deduced combining with repetitive predictor. Without resonance damping, the controller structure is simple. The whole system was modeled and simulated, and then comparison was made with L-based active power filter with predictive current control. The results show that the proposed control scheme makes the LCL-based active power filter achieve high performance compensation,the grid side currents have low total harmonic distortion. The system also has good dynamic performance.
出处
《电气传动》
北大核心
2011年第9期30-33,共4页
Electric Drive
基金
广东高校优秀青年创新人才培育项目(LYM09109)
