电源学报

一种SiC/Si混合五电平逆变器及其优化调制策略

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莫文逸中国电源学会学生会员 ¹ , 张犁中国电源学会高级会员 ¹ , 邹宇航中国电源学会会员 ²

电源学报 | 电力电子变换器拓扑 2026,24(1): 40-50

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电源学报 |电力电子变换器拓扑 2026 , 24 (1) : 40 -50

一种SiC/Si混合五电平逆变器及其优化调制策略

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莫文逸中国电源学会学生会员¹, 张犁中国电源学会高级会员¹, 邹宇航中国电源学会会员²

作者信息

^1.河海大学电气与动力工程学院，南京　211100

^2.新型电力系统运行与控制全国重点实验室（清华大学电机工程与应用电子技术系），北京　100080

通讯作者:

张犁（1985—　），男，中国电源学会高级会员，通信作者，博士，教授。研究方向：新能源电能变换与控制技术。E-mail：zhanglinuaa@hhu.edu.cn。

作者简介:

莫文逸（1999—　），男，中国电源学会学生会员，硕士研究生。研究方向：多电平变流器调制技术。E-mail：221306080025@hhu.edu.cn。

邹宇航（1998—　），男，中国电源学会会员，博士，助理研究员。研究方向：新能源电力变换与控制。E-mail：zouyuhang@mail.tsinghua.edu.cn。

SiC/Si Hybrid Five-level Inverter and Its Optimized Modulation Strategy

Wenyi MO Student Member, CPSS¹, Li ZHANG Senior Member, CPSS¹, Yuhang ZOU Member, CPSS²

Affiliations

^1.School of Electrical and Power Engineering, Hohai University, Nanjing 211100, China

^2.State Key Laboratory of Power System Operation and Control (Department of Electrical Engineering, Tsinghua University), Beijing 100080, China

出版时间: 2026-01-30 doi: 10.13234/j.issn.2095-2805.2026.1.40

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摘要

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提出了1种SiC/Si混合五电平逆变器拓扑及其优化调制策略，所提拓扑由4支SiC MOSFET和4支Si IGBT组成，通过直流侧分裂电容构成五电平结构；所提调制策略中所有高频开关损耗由4支SiC MOSFET承担，4支Si IGBT仅承担通态损耗与部分结电容充放电损耗。损耗建模分析表明，所提SiC/Si混合调制策略能够优化器件损耗分布，充分发挥SiC MOSFET的低开关损耗优势与Si IGBT在大电流条件下的低通态损耗优势。相比于全-Si方案，所提SiC/Si混合方案在大幅提高变换效率的同时仅少量增加硬件成本；相比于全-SiC方案，所提SiC/Si混合方案在实现相近效率性能的同时大幅降低硬件成本，且SiC/Si混合方案在重载工况下的效率优于全-SiC方案。最后，搭建4 kW SiC/Si混合五电平逆变器实验平台，验证所提SiC/Si混合五电平逆变器拓扑及其优化调制策略的可行性与有效性。

关键词

五电平逆变器 / SiC/Si混合 / 脉宽调制 / 损耗分析 / 效率

Abstract

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A SiC/Si hybrid five-level inverter and its optimized modulation strategy are proposed. The proposed topology consists of four SiC MOSFETs and four Si IGBTs, and it utilizes DC-link split capacitors to achieve a five-level structure. Under the proposed modulation strategy, all the high-frequency switching loss is distributed to the four SiC MOSFETs, while the four Si IGBTs only generate conduction losses and part of the junction capacitor charging and discharging losses. The analysis results of loss modeling show that the proposed SiC/Si hybrid modulation strategy can optimize the loss distribution, fully utilize the low-switching-loss advantage of SiC MOSFET and the low-conduction-loss advantage of Si IGBT under large current conditions. Compared with the full Si scheme, the proposed SiC/Si hybrid scheme significantly improves the conversion efficiency while only slightly adding the hardware cost. Compared with the full SiC topology, the proposed SiC/Si hybrid scheme achieves a similar efficiency while obviously reducing the hardware cost. In addition, under heavy load conditions, the proposed SiC/Si hybrid scheme achieves a higher efficiency than the full SiC scheme. An experimental platform of 4 kW SiC/Si hybrid five-level inverter was built to validate the feasibility and effectiveness of the proposed SiC/Si hybrid five-level inverter topology and its optimized modulation strategy.

Key words

Five-level inverter / SiC/Si hybrid / pulse-width modulation / loss analysis / efficiency

引用本文

莫文逸中国电源学会学生会员, 张犁中国电源学会高级会员, 邹宇航中国电源学会会员. 一种SiC/Si混合五电平逆变器及其优化调制策略. 电源学报, 2026 , 24 (1) : 40 -50 . DOI: 10.13234/j.issn.2095-2805.2026.1.40

Wenyi MO, Li ZHANG, Yuhang ZOU. SiC/Si Hybrid Five-level Inverter and Its Optimized Modulation Strategy[J]. Journal of Power Supply, 2026 , 24 (1) : 40 -50 . DOI: 10.13234/j.issn.2095-2805.2026.1.40

基金

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国家自然科学基金优秀青年科学基金资助项目(52322705)

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2026年第24卷第1期

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文章信息

doi: 10.13234/j.issn.2095-2805.2026.1.40

接收时间：2025-02-06
首发时间：2026-10-26
出版时间：2026-01-30

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出版历史

收稿日期：2025-02-06
修回日期：2025-03-02
录用日期：2025-03-07

基金

National Natural Science Foundation of China(52322705)

国家自然科学基金优秀青年科学基金资助项目(52322705)

作者信息

^1.河海大学电气与动力工程学院，南京　211100

^2.新型电力系统运行与控制全国重点实验室（清华大学电机工程与应用电子技术系），北京　100080

通讯作者:

张犁（1985—　），男，中国电源学会高级会员，通信作者，博士，教授。研究方向：新能源电能变换与控制技术。E-mail：zhanglinuaa@hhu.edu.cn。

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https://castjournals.cast.org.cn/joweb/dyxb/CN/10.13234/j.issn.2095-2805.2026.1.40

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2种不同金属材料的力学参数

科 Family	属数 Number of genus	种数 Number of species	占总种数比例 Percentage of total species (%)	属 Genus	种数 Number of species	占总种数比例 Percentage of total species (%)
鹅膏菌科Amanitaceae	2	11	5.26	鹅膏菌属 Amanita	10	4.78
小菇科 Mycenaceae	2	12	5.74	丝盖伞属 Inocybe	5	2.39
多孔菌科 Polyporaceae	8	14	6.70	蜡蘑属 Laccaria	5	2.39
红菇科 Russulaceae	3	23	11.00	小皮伞属 Marasmius	6	2.87
				小菇属 Mycena	11	5.26
				光柄菇属 Pluteus	5	2.39
				红菇属 Russula	17	8.13
				栓菌属 Trametes	5	2.39

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