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所属单位：自动化学院

发表刊物：Diangong Jishu Xuebao

摘要：To improve the reliability of the modular multilevel converters (MMC), a new submodule (SM) topology with shoot-through ability is proposed, which is composed of the clamping circuit, energy transfer circuit and half-bridge circuit. The clamping circuit ensures the stability of the SM voltage, and the energy transfer circuit guarantees the energy balance flowing into and out the SM. The new topology not only has the shoot-through ability and the self-balancing ability, but also does not require a capacitor voltage balance control strategy. It greatly improves the reliability, simplifies the system structure, and reduces the calculation. The circuit topology, operation principle and control method of the novel SM are presented. Based on a five-level single-phase MMC prototype, the feasibility of the proposed SM topology is verified. It has been demonstrated that some SMs are shoot-through and the AC circulate current is small without suppression strategy. © 2019, Electrical Technology Press Co. Ltd. All right reserved.

ISSN号：1000-6753

是否译文：否

发表时间：2019-04-25

合写作者：Xu, Kunshan

通讯作者：谢少军