Three-Level ZCS Converter Suitable for Medium Voltage DC Distribution Network

被引：0

作者：

Azeem, Syed Waqar ^{[1
]}

Zhang, Haifeng ^{[2
]}

Zheng, Lin ^{[2
]}

Lin, Zhiguang ^{[2
]}

Chen, Wu ^{[1
]}

Ning, Guangfu ^{[1
]}

机构：

[1] Southeast Univ, Sch Elect Engn, Nanjing, Jiangsu, Peoples R China

[2] Global Energy Interconnect Res Inst, Beijing, Peoples R China

来源：

2018 IEEE INTERNATIONAL POWER ELECTRONICS AND APPLICATION CONFERENCE AND EXPOSITION (PEAC) | 2018年

基金：

国家高技术研究发展计划(863计划);

关键词：

distributed photovoltaic power; dc distribution network; NPC three-level; zero-current-switching (ZCS);

D O I：

暂无

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

A novel three-level zero-current-switching (ZCS) converter, operating in discontinuous current mode, is proposed for the application of distributed photovoltaic power accessing the medium voltage dc distribution network. The proposed converter is composed of a traditional neutral point clamped (NPC) three-level (TL) circuit and an auxiliary circuit, owning 6 switches and 2 transformers. By controlling the auxiliary circuit with Pulse width modulation (PWM), ZCS can be reached for the basic TL circuit, which delivers most of the power, with the switching loss of the converter remarkably reduced. The influence of turn's ratio the auxiliary transformer on the switch current is discussed in detail, and the parameters design principles are put forward, which is verified with PLECS simulation results. Finally, a prototype of 300 V-1500 V/1500 W is built to verify the performance of the proposed converter.

引用

页码：559 / 564

页数：6

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