电工技术学报2016，Vol.31Issue(11)：13-21,9.
一种星接H桥级联型SVG直流侧电压均衡控制方法研究
Research on DC Voltage Balancing Control Method of Star Connection Cascaded H Bridge Static Var Generator
摘要
Abstract
The in-depth study of the DC voltage balancing of the star connection cascaded H bridge multilevel static var generator( SVG)has been made in this paper. And the control system with three layers of the DC voltage balance has been established. The first layer is the total DC side voltage control,which is maintained to be constant through generating the fundamental positive sequence active current. The second layer is the balancing control between three phases. Through the injection of the zero sequence voltage into the command voltage,we can make the redistribution of the three-phase power,so as to realize the DC voltage balance between three phases. In this method,through feeding forward the power generated by the grid voltage and the output current,the rapid dynamic regulation can be achieved. The third layer is the balancing control among modules in each phase. Through fine tuning the command voltage of each module in each phase along the direction of the current,we can make the redistribution of the power absorbed by each module,so as to ensure that the DC side voltage of each module in each phase is equal to the given value. Experimental results verify the correctness and reliability of the proposed control method in the end.关键词
星接/H桥级联型SVG/直流侧电压控制Key words
Star connection/cascaded H bridge SVG/DC side voltage control分类
信息技术与安全科学引用本文复制引用
何英杰,付亚斌,段文岩..一种星接H桥级联型SVG直流侧电压均衡控制方法研究[J].电工技术学报,2016,31(11):13-21,9.基金项目
国家自然科学基金（50907052）、陕西省自然科学基金（2014JQ7271）和输配电装备及系统安全与新技术国家重点实验室访问学者项目（2007DA10512714405）资助。 （）
