A Quasi-Resonant Switched-Capacitor Multilevel Inverter With Self-Voltage Balancing for Single-Phase High-Frequency AC Microgrids

doi:10.1109/TII.2017.2672733

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	A Quasi-Resonant Switched-Capacitor Multilevel Inverter With Self-Voltage Balancing for Single-Phase High-Frequency AC Microgrids
	Zeng, Jun 1; Wu, Jialei 1; Liu, Junfeng 2; Guo, Huafang 3
刊名	IEEE TRANSACTIONS ON INDUSTRIAL INFORMATICS
	2017-10-01
卷号	13 期号:5 页码:2669-2679
关键词	High-frequency Ac (hfAc) Microgrids Multilevel Inverter (Mli) Quasi-resonant Switched-capacitor (Qrsc) Self-voltage Balancing
DOI	10.1109/TII.2017.2672733
文献子类	Article
英文摘要	In this paper, a quasi-resonant switched-capacitor (QRSC) multilevel inverter (MLI) is proposed with self-voltage balancing for single-phase high-frequency ac (HFAC) microgrids. It is composed of a QRSC circuit (QRSCC) in the frontend and an H-bridge circuit in the backend. The input voltage is divided averagely by the series-connected capacitors in QRSCC, and any voltage level can be obtained by increasing the capacitor number. The different operational mechanism and the resulting different application make up for the deficiency of the existing switched-capacitor topologies. The capacitors are connected in parallel partially or wholly when discharging to the load, thus the self-voltage balancing is realized without any high-frequency balancing algorithm. In other words, the proposed QRSC MLI is especially adapted for HFAC fields, where fundamental frequency modulation is preferred when considering the switching frequency and the resulting loss. The quasi-resonance technique is utilized to suppress the current spikes that emerge from the instantaneous parallel connection of the series-connected capacitors and the input source, decreasing the capacitance, increasing their lifetimes, and reducing the electromagnetic interference, simultaneously. The circuit analysis, power loss analysis, and comparisons with typical switched-capacitor topologies are presented. To evaluate the superior performances, a nine-level prototype is designed and implemented in both simulation and experiment, whose results confirm the feasibility of the proposed QRSC MLI.
WOS关键词	REDUCED NUMBER ; CONVERTERS ; SYSTEM ; COMPONENTS
语种	英语
WOS记录号	WOS:000412361900055
资助机构	National Natural Science Foundation of China(61573155) ; Guangdong Natural Science Foundation(2016A03031358) ; Guangdong Science and Technology Planning Project(2016A010102007) ; Science and Technology Program of Guangzhou(201607010209)
内容类型	期刊论文
源URL	[http://ir.giec.ac.cn/handle/344007/16304]
专题	中国科学院广州能源研究所
作者单位	1.South China Univ Technol, New Energy Res Ctr, Guangzhou 510640, Guangdong, Peoples R China 2.South China Univ Technol, Sch Automat Sci & Engn, Guangzhou 510640, Guangdong, Peoples R China 3.Chinese Acad Sci, Guangzhou Inst Energy Convers, Guangzhou 510640, Guangdong, Peoples R China
推荐引用方式 GB/T 7714	Zeng, Jun,Wu, Jialei,Liu, Junfeng,et al. A Quasi-Resonant Switched-Capacitor Multilevel Inverter With Self-Voltage Balancing for Single-Phase High-Frequency AC Microgrids[J]. IEEE TRANSACTIONS ON INDUSTRIAL INFORMATICS,2017,13(5):2669-2679.
APA	Zeng, Jun,Wu, Jialei,Liu, Junfeng,&Guo, Huafang.(2017).A Quasi-Resonant Switched-Capacitor Multilevel Inverter With Self-Voltage Balancing for Single-Phase High-Frequency AC Microgrids.IEEE TRANSACTIONS ON INDUSTRIAL INFORMATICS,13(5),2669-2679.
MLA	Zeng, Jun,et al."A Quasi-Resonant Switched-Capacitor Multilevel Inverter With Self-Voltage Balancing for Single-Phase High-Frequency AC Microgrids".IEEE TRANSACTIONS ON INDUSTRIAL INFORMATICS 13.5(2017):2669-2679.