Series-Parallel Multiple Integrated Modular Multilevel DC-DC Converter for All-DC Offshore Wind Power System

被引：5

作者：

Zhao, Peiqi ^{[1
]}

Meng, Yongqing ^{[1
]}

Ge, Mengwei ^{[1
]}

Duan, Ziyue ^{[1
]}

Wang, Xiuli ^{[1
]}

Wang, Jianxue ^{[1
]}

机构：

[1] Xi An Jiao Tong Univ, State Key Lab Elect Insulat & Power Equipment, Shaanxi Prov Key Lab Smart Grid, Xian 710049, Peoples R China

来源：

IEEE TRANSACTIONS ON POWER DELIVERY | 2024年 / 39卷 / 04期

基金：

国家重点研发计划;

关键词：

DC-DC power converters; Power transformer insulation; Topology; Voltage; High-voltage techniques; Wind power generation; Harmonic analysis; All-dc wind power system; series-parallel multiple; large step ratio; harmonic suppression; MMC dc-dc converter; HVDC; MVDC; COLLECTION; CONVERSION; OPERATION; TOPOLOGY;

D O I：

10.1109/TPWRD.2024.3419087

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：

All-dc offshore wind power system is a promising solution for long distance and high power transmission. This paper proposes a series-parallel multiple integrated modular multilevel dc-dc converter (SPMI-MMC) for all-dc offshore wind power systems to meet its demand for high voltage, high power, and large-step ratio dc voltage transmission. Different from the traditional isolated dc-dc converter, the submodules (SMs) of the SPMI-MMC adopt the input-parallel-output-series (IPOS) arrangement to achieve a large step ratio. The symmetrical parallel multiple submodule (SPM-SM) is proposed to realize parallel multiple of SMs through coupling reactors (CRs), which not only can enhance the large current operation ability but also can cancel out the nonzero-sequence high frequency harmonics. Considering the cost factor, the simplified full-bridge double submodule (S-FBDSM) is first introduced in dc-dc converter. It is economical and has good bidirectional dc-fault blocking ability. Digital simulation and real time hard-in-loop (HIL) simulation tests are conducted to verify the effectiveness and superiority of the proposed SPMI-MMC.

引用

页码：2482 / 2494

页数：13

共 31 条

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