摘要
在此提出一种基于改进时域变换检测电路(TTA)的控制策略,能够有效降低负载异常条件下纹波电压宽度,减小所需电容容量。所提方法通过将TTA检测出的基波负序叠加到指令电流来抵消由3次谐波引起的有功功率纹波,并通过公式推导验证其正确性。仿真与实验结果表明,该方法能够消除直流侧电压二倍频振荡,降低有源电力滤波器(APF)电容容量并保持良好的补偿特性。
A control strategy based on improved time-domain transformation algorithm(TTA)is proposed,which can effectively reduce ripple voltage width and capacitance required under abnormal conditions of load.The proposed method detects the fundamental negative sequence current by TTA,and the active power oscillation caused by the third harmonic is eliminated by adding the detected negative sequence fundamental current to the instruction current.The correctness of the method is verified by formula derivation.The simulation and experiment results show that the proposed method can eliminate DC voltage doubling oscillation,reduce active power filter(APF)capacitance and maintain good compensation characteristics.
作者
刘鹏飞
杨剑锋
LIU Peng-fei;YANG Jian-feng({Lanzhou Jiaotong University,Lanzhou 730070,China)
出处
《电力电子技术》
CSCD
北大核心
2020年第4期49-52,共4页
Power Electronics
基金
国家自然科学基金(61863023)。
