电力系统自动化Issue(23)：126-131,6.DOI:10.7500/AEPS20141221011
模块化多电平变换器全电平产生原理及电容均压策略
Study on Full Level Generation and Capacitor Voltage Balance Strategy of the Modular Multilevel Converter
陈耀军 1陈柏超 2钟炎平 1赖向东 1吴克玲1
作者信息
- 1. 空军预警学院黄陂士官学校，湖北省武汉市 430345
- 2. 武汉大学电气工程学院，湖北省武汉市 430072
- 折叠
摘要
Abstract
There are N sub-modules in a multilevel converter,and according to different modulation rules,N +1 levels (basic levels) or 2N +1 levels (full levels) can be achieved.The working mechanism and effects on the arm inductor of the two output levels is proposed,and the relationship between level generation and circulating current and capacitor voltage control is studied.Based on which,for the carrier phase position pulse width modulation(PWM),a capacitor balance strategy based on PWM signals rotating is presented.With this strategy,the time of implementing the algorithm can be adjusted according to the need to reduce the change in the switching frequency caused by capacitor voltage balance.The conclusions and the strategy are verified with a 500 V dc input experimental platform.关键词
模块化多电平变换器/电容均压/脉宽调制Key words
modular multilevel converter(MMC)/capacitor voltage balance/pulse width modulation(PWM)引用本文复制引用
陈耀军,陈柏超,钟炎平,赖向东,吴克玲..模块化多电平变换器全电平产生原理及电容均压策略[J].电力系统自动化,2015,(23):126-131,6.
