摘要
传统的有源电力滤波器Active PowerFilter,简称APF)用于电网电压波动较小的大电网系统时具有良好的补偿性能,但用于电压波动比较剧烈的独立小电网时会产生一些问题。对此,文中分析了电网电压波动对APF 的影响,提出了将电流调节器由传统的P 调节器改为PI调节器的控制策略。把电流环调节器改为PI调节器,基本不影响APF 跟踪补偿指令的性能,却能大大降低电压波动对APF 的影响。通过实验验证,把电流环调节器改为PI调节器的APF 具有较好的静态补偿效果,且对电网电压波动不敏感,完全可用于电压波动比较剧烈的独立小电网系统。
As voltage fluctuating is serious in the independent small rating power system,so the traditional Active Power Filter (APF) which is used in the large rating power system no longer performs well.In this paper,the influence on APF caused by the voltage fluctuating is analyzed,and a PI current regulator instead of P current regulator is proposed.As analyzed,it can well restrain the influence on APF caused by the voltage fluctuating.The experimental results also demonstrate the APF with PI current regulator has good steady-state performance,and is not sensitive to the voltage fluctuating.
出处
《电力电子技术》
CSCD
北大核心
2005年第2期15-17,55,共4页
Power Electronics
基金
国家自然科学基金资助(59737140)
关键词
滤波器
调节器
变换器
filter
regulator
convertorFoundation Project:Supported by National Natural Science Foundation of China(No.59737140)
