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个人信息Personal Information
教授 博士生导师
招生学科专业：
电气工程 -- 【招收博士、硕士研究生】 -- 自动化学院
能源动力 -- 【招收博士、硕士研究生】 -- 自动化学院
性别：女
学历：南京航空航天大学
学位：工学博士学位
所在单位：自动化学院
办公地点：南航将军路校区自动化学院
联系方式：xiaolan@nuaa.edu.cn
电子邮箱：
An Insight on the Unbalance Phenomenon Caused by the Low Switching Frequency in an MMC System
点击次数：
所属单位：自动化学院
发表刊物：2018 IEEE TEXAS POWER AND ENERGY CONFERENCE (TPEC)
关键字：PWM strategy unbalance phenomenon low switching frequency capacitor voltage balancing strategy
摘要：Carrier phase-shift PWM strategy is widely used in the MMC system to satisfy the drive demands of numerous switches in submodules. However, an unbalance phenomenon in the submodules' capacitor voltages occurs when the PWM strategy is used in the system that has a low switching frequency, badly deteriorating the system working performance. This study first analyses the relation between the unbalance phenomenon, PWM strategy and switching frequency. The change trends of capacitor voltages in different submodules are then obtained to provide an accurate description for the cause of the unbalance phenomenon in a low switching frequency. Based on the analysis above, an improved capacitor voltage balancing strategy is subsequently proposed to effectively decrease the magnitudes of the unbalance phenomenon. The efficiency of the unbalance phenomenon in a low switching frequency and improved capacitor voltage balancing strategy are finally demonstrated via experiments.
是否译文：否
发表时间：2018-01-01
合写作者：Wang Chuyang,Jia Heping
通讯作者：Wang Chuyang,肖岚