中国电机工程学报2011，Vol.31Issue(27)：14-20,7.
有源电力滤波器选择性谐波电流控制策略
Selective Harmonic Current Control Strategy in Active Power Filters
摘要
Abstract
In this paper, one conventional proportional integral （PI） control and one new current control, for shunt active power filters design, were compared. Because of the system stability constrained, the system loop gain of the PI control is restricted. Hence, in order to improve the system compensation performance, a new current control scheme for selective harmonics compensation was proposed for shunt active power filters. Based on the conventional PI control, the new method extracts the main harmonics （the 5th and 7th harmonics mainly） respectively, which are controlled by different PI controllers independently. Simultaneously, another PI controller is employed to deal with the other harmonics all together. The design method is provided, which increases the system loop gain to follow the main harmonics, improves the compensation capability of APFs, and achieves the control system an perfect frequency response. Conclusions are supported by both simulations and experimental results on a 30-kVA laboratory APF, indicating a reduction in line current THD factor from 23.21% to 3.75%.关键词
有源电力滤波器/PI控制/闭环增益/系统稳定性/选择性谐波电流控制Key words
active power filters/PI control/loop gain/system stability/current control scheme for selective harmonics分类
信息技术与安全科学引用本文复制引用
刘威葳,丁洪发,段献忠..有源电力滤波器选择性谐波电流控制策略[J].中国电机工程学报,2011,31(27):14-20,7.基金项目
“十一五”国家科技支撑计划重大项目（2007BAA12B03). （）
