摘要
针对大容量非线性负载谐波补偿问题,提出了基于自适应谐波检测算法的有源电力滤波器(APF)模块化控制策略。自适应谐波检测算法不仅可以抑制非正弦电压对电流检测的影响,而且能够快速跟踪谐波电流。基于容量的比例均流控制策略具有补偿灵活,易于实现冗余控制的优点;当补偿量超过装置容量时,根据自身容量对谐波进行补偿。最后对模块化并联系统进行了稳定性分析。理论分析和仿真结果表明,所提出的APF模块化控制策略适合于大容量谐波补偿,并且可以提高系统的稳定性和安全性。
A multi-modular control strategy and an adaptive harmonic detection algorithm are proposed for shunt active power filters（APFs） to compensate for harmonic currents of high-power nonlinear loads.The adaptive harmonic detection algorithm can effectively suppress the impacts of harmonic voltages as well as efficiently track the referenced harmonic current.Compared with other approaches,the capacity-based proportional current-sharing control strategy provides flexible compensation and is easy to implement redundant controls.This means that when the compensation level is higher than the total APF capacity,more harmonic currents can be compensated with the proposed control strategy.Finally,the stability of the multi-modular APF is studied.Theoretical analysis and simulation results verify that the proposed control strategy is suitable for compensating high-power harmonic currents and can improve the stability and security of the multi-modular APF system.
出处
《电力系统自动化》
EI
CSCD
北大核心
2013年第8期117-122,共6页
Automation of Electric Power Systems
基金
国家自然科学基金资助项目(60635040)~~
关键词
有源电力滤波器
自适应谐波检测
模块化
均流控制
active power filter（APF）
adaptive harmonic detection
multi-modular
current-sharing control
