Research on a Single-stage Three-phase Cuk Three-level Inverter

被引：0
|
作者：
Wang L. [1 ]
Han X. [1 ]
Shi S. [1 ]
机构：
[1] Key Lab of Power Electronics for Energy Conservation and Motor Drive of Hebei Province, Yanshan University, Qinhuangdao, 066004, Hebei Province
来源：
Zhongguo Dianji Gongcheng Xuebao/Proceedings of the Chinese Society of Electrical Engineering | 2020年 / 40卷 / 13期
基金：
中国国家自然科学基金;
关键词：
Cuk converter; Phase-shifted carrier modulation; Renewable energy power generation; Step-up/; down; Three-level inverter;
D O I：
10.13334/j.0258-8013.pcsee.190439
中图分类号：
学科分类号：
摘要：
A single-stage three-phase Cuk three-level inverter was proposed. The inverter was constructed by three-phase expansion of the Cuk flying-capacitor three-level DC-DC converter. Benefiting from the voltage step-up/down ability of the Cuk converter, the proposed inverter can realize the step-up/down of the input voltage, and also has the advantages to be used in the medium and high power applications owing to its three-level output characteristic. In addition, the phase-shifted carrier modulation method was applied to realize the voltage self-balancing of the flying capacitor. Firstly, this paper introduced the topology and modulation mode of the inverter, and then analyzed the working mode and working characteristics of the inverter in the carrier phase shift modulation mode. Based on this, the steady-state mathematical relationship of the circuit and the input-output voltage gain were derived. Finally, the closed-loop control strategy was determined, simulation and experimental results proved that the proposed inverter has a wide range output voltage gain to realize single-stage voltage step-up/down invention, thus it is suitable for the application of renewable energy power generation field. © 2020 Chin. Soc. for Elec. Eng.
引用
收藏
页码：4290 / 4300
页数：10
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