单相升降压型五电平逆变器拓扑及控制

doi:10.19595/j.cnki.1000-6753.tces.L80323

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Abstract In this paper, a new single-phase five-level inverter topology with buck-boost capability is proposed by analyzing the advantages and disadvantages of the existing five-level inverter topology. Compared with the traditional multilevel inverter topology, the new Buck-Boost five-level inverter has the advantages of enabling buck-boost, simple topology, easy control, less power devices, and low switching losses. Under the carrier cascade modulation strategy, an open loop simulation was performed on the new inverter to verify the Buck-Boost capability. Based on the PR control, the closed-loop design of the new inverter was performed and verified by simulation. In order to improve the quality of the grid-connected current, the model predictive control algorithm was used to control the inverter, and Matlab simulation was performed to verify the correctness of the theoretical analysis. Compared with the traditional PR control methods, this control method has the advantage of model prediction. Finally, the open-loop and closed-loop experiments have verified the new inverter topology.

Key words： Five-level single-phase inverter Buck-Boost topology model predictive control

Received: 30 June 2018 Published: 29 July 2019

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TM464

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	Yang Guoliang
	Zhang Yuna
	Chen Taiyu
	Jia Yanxiao
	Fang Yiming

Cite this article:

Yang Guoliang,Zhang Yuna,Chen Taiyu等. Topology and Control Strategy of a Single-Phase Buck-Boost Five-Level Inverter[J]. Transactions of China Electrotechnical Society, 2019, 34(14): 2922-2935.

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https://dgjsxb.ces-transaction.com/EN/10.19595/j.cnki.1000-6753.tces.L80323 OR https://dgjsxb.ces-transaction.com/EN/Y2019/V34/I14/2922

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