摘要
有源电力滤波器(APF)直流侧电压的波动状态直接影响到系统的补偿效果。将模糊控制理论与传统的PI控制相结合,通过判断误差和误差变化率的所属模糊范围,输出比例和积分的调整因子,从而实现对PI参数的自整定。这种方法可以大大提高系统的鲁棒性、动态特性,并降低超调,同时保留PI控制对系统静态误差的解决能力。Matlab中的仿真结果证明了该控制策略的正确性与高效性。
The fluctuations in state of active power filter DC voltage directly affect the compensation effect in the system. By combining the fuzzy control theory with conventional PI control, the propor- tional and integral factor is the output by judging the fuzzy range of error and its changing rate in or- der to achieve the PI parameters tuning. This method can greatly improve the robustness of the sys- tem and its dynamic characteristics, and reduce the overshoot, while retaining the PI control to solve the system static error. The Matlab simulation results verify the correctness and efficiency of the con- trol strategy.
出处
《辽宁科技大学学报》
CAS
2012年第3期276-280,共5页
Journal of University of Science and Technology Liaoning
