基于单极倍频前馈解耦的STATCOM输出谐波抑制  

Output Harmonic Suppression of STATCOM Based on Monopole Frequency Doubling Feedforward Decoupling

作　　者：邢超 何鑫 奚鑫泽 刘明群 李胜男 XING Chao;HE Xin;XI Xinze;LIU Mingqun;LI Shengnan(Yunnan Electric Power Research Institute,Yunnan Power Grid Co.,Ltd.,Kunming 650217,China)

机构地区：[1]云南电网有限责任公司电力科学研究院,云南昆明650217

出　　处：《智慧电力》2020年第10期86-91,共6页Smart Power

基　　金：国家自然科学基金资助项目(51707026)。

摘　　要：基于单极倍频的STATCOM谐波治理方法,首先根据逆变级联参数推导出谐波成分,针对基波与边带谐波在单极倍频载波移相调制技术加以应用,具有三电平特性的单极倍频使得逆变输出接近正弦波。进一步地,为了提高补偿器输出的电压和电流质量在dq坐标系下加入电压前馈与电流解耦控制技术,实现参数的独立控制与追踪,控制电网电流的稳定。通过仿真与实验结果表明,在加入该控制技术后,谐波治理有明显改善,且电网电流稳定。Based on the harmonic control method of STATCOM with monopole frequency doubling,the harmonic components are derived from cascade inverter parameters,mainly targeting the application of fundamental harmonics and sideband harmonics in the monopole frequency doubling carrier phase-shifted modulation technology.The monopole frequency doubling with three-level characteristics makes the inverter output close to sine wave.Furthermore,in order to improve the output voltage and current quality of the compensator,the voltage feedforward and current decoupling control technology is added in the dq frame to realize the independent control and tracking of the parameters and the stability control of power grid current.The simulation and experimental results show the significant improvement in the harmonic control and the current stability after adding the control technology.

关 键 词：链式STATCOM 单极倍频CPS-SPWM调制 前馈解耦 

分 类 号：TM712[电气工程—电力系统及自动化]