摘要
介绍了一种双向储能变流器(PCS)主电路拓扑结构。针对变流器并网电流谐波问题,提出一种基于复合控制技术的电流谐波抑制策略。由于受到电网谐波及调制的影响,双向储能变流器的并网电流中含有一定谐波,降低了装置输出电能质量。采用结合比例积分(PI)和重复控制的复合控制策略,能有效抑制双向PCS并网电流的谐波含量,并保证了系统双向控制的动态响应速度。在此基础上,研制了一台100 kW双向PCS样机。实验结果验证了所提变流器并网控制方法的有效性和可行性。
A main circuit topological structure of bi-directional power conversion system（PCS） is given.In order to solve the problem of grid-connected harmonic current of PCS, a novel harmonic current suppression strategy is proposed based on a hybrid controller.Due to the reasons of grid harmonics and modulation,plenty of harmonic currents exist in the output current of PCS, which will worsen the power quality.Through the proposed hybrid control strategy based on proportional-integral（H） controller and repetitive controller, the harmonic content of PCS can be effectively sup- pressed,and the dynamic bi-directional response speed is still guaranteed.On this basis,a 100 kW bi-directional PCS is developed.The effectiveness and feasibility of the proposed method are verified by experimental results.
出处
《电力电子技术》
CSCD
北大核心
2013年第6期41-43,共3页
Power Electronics
基金
江苏省科技支撑计划(SBE201200486)~~
关键词
储能变流器
并网
谐波抑制
power conversion system
grid-connected
harmonic suppression
