Novel High-Voltage High-Power DC-DC Converter for Offshore Wind Farms

被引：0

作者：

Ishibashi, Takaharu ^{[1
]}

Jimichi, Takushi ^{[1
]}

Sato, Yukihiko ^{[2
]}

机构：

[1] Mitsubishi Electr Corp, Kobe, Hyogo, Japan

[2] Chiba Univ, Chiba, Japan

来源：

2018 20TH EUROPEAN CONFERENCE ON POWER ELECTRONICS AND APPLICATIONS (EPE'18 ECCE EUROPE) | 2018年

关键词：

Dual-Active Bridge converter; HVDC; Medium-Frequency transformer; DC collector grid; SYSTEM; HVDC;

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：

This paper deals with offshore wind system with DC collector grid, in which a high-voltage (HV) DCDC converter is utilized between the DC collector gird and HVDC transmission line. This study is focused on the circuit configuration of the HV DC-DC converter. Conventionally, a modular multilevel converter (MMC) is used for AC-DC conversion in HVDC systems. However, adopting the MMC topology for the HV DC-DC converter cannot achieve high efficiency because of hard switching. This paper proposes a novel configuration of a 1-GW +/- 25-kV/+/- 350-kV dual-active bridge DC-DC converter for offshore wind system, which comprises two series-connected IGBTs to reduce the transformer weight and increase the efficiency. The proposed configuration can achieve the efficiency of 98.5%.

引用

页数：8

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