Parameter Optimization of a Compact High-voltage High-ratio DC-DC Converter for Offshore Wind Power DC Collection

CHAO Xueming; WANG Jinyu; CI Song

doi:10.20204/j.sp.2026.02011

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Parameter Optimization of a Compact High-voltage High-ratio DC-DC Converter for Offshore Wind Power DC Collection

更新时间：2026-02-28

- Parameter Optimization of a Compact High-voltage High-ratio DC-DC Converter for Offshore Wind Power DC Collection
- Vol. 54, Issue 2, Pages: 88-97(2026)
- 作者机构：
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- DOI：10.20204/j.sp.2026.02011
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- Published：2026
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晁雪茗,王金玉,慈松.面向海上风电直流汇集的紧凑型高压高变比直流变换器参数优化[J].智慧电力,2026,54(2):88-97.

doi:10.20204/j.sp.2026.02011
晁雪茗,王金玉,慈松.面向海上风电直流汇集的紧凑型高压高变比直流变换器参数优化[J].智慧电力,2026,54(2):88-97. DOI： 10.20204/j.sp.2026.02011.

doi:10.20204/j.sp.2026.02011 DOI：

摘要

面向深远海上风电直流汇集的应用需求，旨在设计一种兼具紧凑化、高电压增益、大容量及低损耗的高压直流变换器。首先，提出一种基于模块化多电平中点钳位（输入串联输出串联）MMC-NPC（ISOS）结构的新型模块化拓扑，通过一次侧NPC电路与二次侧单相MMC阀串相结合，并采用输入-输出串联级联方式，实现高压隔离与高变比功率变换；然后，设计了相应的功率均衡控制与交错移相纹波抑制策略，并基于准两电平模型与软开关条件对关键参数进行协同优化；最后，在PSCAD/EMTDC平台搭建了双极系统仿真模型，验证了其双向功率传输与动态均衡性能。仿真与技术经济性对比结果表明，所提拓扑在体积、重量与运行损耗方面均优于传统方案，更适合海上风电直流汇集的应用场景。

Abstract

To meet the application requirements of DC collection for far-reaching offshore wind power

this paper aims to design a high-voltage DC converter that combines compact structure

high voltage gain

large capacity

and low loss. First

a novel modular topology based on the modular multilevel converter-neutral point clamped （input-series output-series）（MMC-NPC）（ISOS） structure is proposed

which integrates a primary-side NPC circuit with a secondary-side single-phase MMC valve string in an input-output series cascade configuration to achieve high-voltage isolation and high-ratio power conversion. Then

corresponding power balancing control and interleaved phase-shift ripple suppression strategies are designed

and key parameters are collaboratively optimized based on a quasi-two-level model and soft-switching conditions. Finally

a bipolar system simulation model is built on the PSCAD/EMTDC platform to verify its bidirectional power transfer and dynamic balancing performance. Simulation and techno-economic comparison results show that the proposed topology outperforms traditional solutions in terms of volume

weight

and operational loss

making it more suitable for offshore wind power DC collection applications.

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references

章浅诺，张哲任，金砚秋，等. 适用于超大规模海上风电并网的直流送出系统 [J ] .电力自动化设备，2025，45（1）：106-114.

程启明，张梁，渠博岗，等. 面向海上风电的M3C双频环流注入桥臂均压控制策略 [J ] .智慧电力，2025，53（5）：73-81.

NAMI A，LIANG J，DIJKHUIZEN F，et al. Modular multilevel converters for HVDC applications：review on converter cells and functionalities [J ] .IEEE Transactions on Power Electronics，2015，30（1）：18-36.

FU Y，LIU Y，HUANG L，et al. Collection system topology for deep-sea offshore wind farms considering wind characteristics [J ] .IEEE Transactions on Energy Conversion，2022，37（1）：631-642.

孙均磊，贾科，李再男，等. 基于故障分量时频突变特征的海上风电直流升压送出线路纵联保护 [J ] .电力系统保护与控制，2024，52（18）：1-11.

刘乃皓，高厚磊，徐彬，等. 经柔性高压直流输电并网的海上风电送出线路拟功率和、差波形比较式纵联保护 [J ] .电力自动化设备，2024，44（8）：62-69.

CHEN W，HUANG A，LI C，et al. Analysis and comparison of medium voltage high power dc /dc converters for offshore wind energy systems[J ] .IEEE Transactions on Power Electronics，2013，28（4）：2014-2023.

李晓博，冯定腾，姚辰昊，等. 基于基频调制电流源换流器的海上风电送出系统的启动控制策略 [J ] .电力自动化设备，2024，44（9）：65-72.

HU P，YIN R，HE Z，et al. A modular multiple DC transformer based DC transmission system for PMSG based offshore wind farm integration [J ] .IEEE Access，2020，8：15736-15746.

ZANG H，GRUSON F，RODRIGUEZ D，et al. Overvoltage limitation method of an offshore wind farm with dc series-parallel collection grid [J ] .IEEE Transactions on Sustainable Energy，2019，10（1）：204-213.

陆地，李玉，武文广，等. 大功率电力电子技术在我国直流输配电领域的应用 [J ] .智慧电力，2017，45（8）：1-8.

SARKAR S，DAS A. An isolated reduced arm modular multilevel converter with fault blocking capability for MVDC rail traction [J ] .IEEE Transactions on Transportation Electrification，2025，11（1）：86-96.

张钥朗，钱锐，欧阳广泽，等. 不平衡条件下柔性配电网SOP故障穿越控制策略 [J ] .电网与清洁能源，2025，41（5）：30-40.

ABDOLI I，ESHKEVARI A，AHMED H. A nonisolated single-output bipolar buck-boost DC-DC converter with reduced components [J ] .IEEE Journal of Emerging and Selected Topics in Industrial Electronics，2025，6（4）：1459-1468.

翟佳榆，周建萍，陈亮华，等. 非理想条件下混合型MMC连续控制集模型预测控制方法 [J ] .智慧电力，2025，53（8）：88-94.

朱博，徐攀腾，崔远卓，等. 连接无源网络的LCC-FHMMC混合直流输电系统送端交流故障穿越控制策略 [J ] .高压电器，2024，60（3）：151-160.

CHEN W，RUAN X，YAN H，et al. DC / DC conversion systems consisting of multiple converter modules：stability，control，and experimental verifications[J ] .IEEE Transactions on Power Electronics，2009，24（6）：1463-1474.

LAGIER T，LADOUX P. A comparison of insulated dc-dc converters for hvdc off-shore wind farms [C ] .International Conference on Clean Electrical Power.Taormina，Italy，2015.

DING H，ZOU G，WANG F，et al. Modelling and control strategies of dc offshore wind farm [C ] 8th Asia Conference on Power and Electrical Engineering.Tianjin，China，2023.

郭宛鑫，孙毅超，鄢寅宇，等. 基于钳位子模块的开关对复用型模块化多电平固态变压器 [J ] .电力工程技术，2024，43（6）：33-42.

QIAO Y，ZHANG X，XIANG，et al. Trapezoidal current modulation for bidirectional high-step-ratio modular dc-dc converters [J ] .IEEE Transactions on Power Electronics，2020，35（4）：3402-3415.

ZHANG X，TIAN M，XIANG X，et al. Large step ratio input-series-output-parallel chain-link dc-dc converter [J ] .IEEE Transactions on Power Electronics，2019，34（5）：4125-4136.

陈继开，王润灏，初壮，等. 风电直流外送系统的故障恢复分析与控制优化策略 [J ] .智慧电力，2025，53（5）：82-89.

JAFARISHIADEH S，DARGAHI V，KHOSHKBAR S，et al. Novel multi-terminal MMC-based dc /dc co nverter for MVDC grid interconnection[J ] .IET Power Electronics，2018，11（7）：1266-1276.

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