电源学报

一种减小共模电压的级联H桥逆变器容错运行策略

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杨柳 , 黄海中国电源学会学生会员 , 邱荣禄 , 王涵宇中国电源学会会员 , 张兴中国电源学会高级会员

电源学报 | 电磁干扰与电磁兼容 2026,24(9): 351-359

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电源学报 |电磁干扰与电磁兼容 2026 , 24 (9) : 351 -359

一种减小共模电压的级联H桥逆变器容错运行策略

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杨柳（2001—　），女，硕士研究生。研究方向：电力电子变换器的容错运行。E-mail：2023110391@mail.hfut.edu.cn。

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杨柳（2001—　），女，硕士研究生。研究方向：电力电子变换器的容错运行。E-mail：2023110391@mail.hfut.edu.cn。

黄海（2001—　），男，中国电源学会学生会员，硕士研究生。研究方向：电力电子变换器的故障诊断。E-mail：2023170528@mail.hfut.edu.cn。

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黄海（2001—　），男，中国电源学会学生会员，硕士研究生。研究方向：电力电子变换器的故障诊断。E-mail：2023170528@mail.hfut.edu.cn。

邱荣禄（2000—　），男，硕士研究生。研究方向：多电平电力电子装置。E-mail：2022170499@mail.hfut.edu.cn。

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邱荣禄（2000—　），男，硕士研究生。研究方向：多电平电力电子装置。E-mail：2022170499@mail.hfut.edu.cn。

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张兴（1963—　），男，中国电源学会高级会员，博士，教授。研究方向：新能源发电及其电力电子技术。E-mail：honglf@ustc.edu.cn。

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张兴（1963—　），男，中国电源学会高级会员，博士，教授。研究方向：新能源发电及其电力电子技术。E-mail：honglf@ustc.edu.cn。

杨柳, 黄海中国电源学会学生会员, 邱荣禄, 王涵宇中国电源学会会员, 张兴中国电源学会高级会员

作者信息

可再生能源接入电网技术国家地方联合工程实验室（合肥工业大学），合肥　230009

通讯作者:

王涵宇（1990—　），男，中国电源学会会员，通信作者，博士，副教授。研究方向：电力电子变换器的故障诊断及容错运行。E-mail：hywang@hfut.edu.cn。

作者简介:

杨柳（2001—　），女，硕士研究生。研究方向：电力电子变换器的容错运行。E-mail：2023110391@mail.hfut.edu.cn。

黄海（2001—　），男，中国电源学会学生会员，硕士研究生。研究方向：电力电子变换器的故障诊断。E-mail：2023170528@mail.hfut.edu.cn。

邱荣禄（2000—　），男，硕士研究生。研究方向：多电平电力电子装置。E-mail：2022170499@mail.hfut.edu.cn。

张兴（1963—　），男，中国电源学会高级会员，博士，教授。研究方向：新能源发电及其电力电子技术。E-mail：honglf@ustc.edu.cn。

A Fault-tolerant Operation Strategy for Cascaded H-bridge Inverters Aimed at Reducing Common-mode Voltage

Liu YANG, Hai HUANG Student Member, CPSS, Ronglu QIU, Hanyu WANG Member, CPSS, Xing ZHANG Senior Member, CPSS

Affiliations

National and Local Joint Engineering Laboratory for Renewable Energy Access to Grid Technology (Hefei University of Technology), Hefei 230009, China

出版时间: 2026-09-30 doi: 10.13234/j.issn.2095-2805.2026.9.351

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摘要

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级联H桥CHB（cascaded H-bridge）逆变器的容错运行需注入共模电压CMV（common-mode voltage），可在不增加硬件成本的条件下使逆变器在故障后保持平衡线电压，但这会导致三相功率存在显著差异，甚至发生功率回流，造成不利影响。对此，提出了一种三次谐波与交替钳位算法相结合的CMV注入方式，以实现最大程度减小CMV的基频分量FCMV（fundamental common-mode voltage）。首先，通过交替钳位取值确定CMV，增大故障相输出电压以减小CMV；随后，注入三次谐波扩大CMV的线性调制区域，提高无需注入CMV的线电压极限值，以改善该方法所需线电压越小注入CMV越大的局限性。所提出的容错运行策略计算简单，FCMV小，提升了容错之后的变换器运行性能，仿真和实验证明了该方法的有效性。

关键词

级联H桥 / 故障容错 / 共模电压 / 三次谐波

Abstract

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Cascaded H-bridge (CHB) inverters require common-mode voltage (CMV) injection for fault-tolerant operation, which enables the inverter to maintain balanced line-to-line voltage after a fault without additional hardware costs. However, it can potentially lead to unbalanced power in a three-phase system, leading to reverse power flow, which is unwanted in applications. To mitigate these side-effects, a method for injecting CMV that combines the third harmonic and an alternating clamping algorithm is proposed to minimize the fundamental common-mode voltage (FCMV). The approach starts by using alternating clamping to determine CMV, thereby increasing the output voltage of the faulty phase and reducing CMV. Subsequently, the third harmonic is injected to expand the linear modulation region of the CMV, thereby increasing the maximum line-to-line voltage limit achievable without CMV injection. This optimization mitigates the limitation that smaller line-to-line voltages require larger CMV injection of the proposed method. The proposed fault-tolerant operation strategy demonstrates simple calculations and a reduced FCMV, enhancing converter performance after a fault. Simulations and experiments confirm the effectiveness of this method.

Key words

Cascaded H-bridge (CHB) / common-mode voltage (CMV) / fault-tolerant operation / third harmonic

引用本文

杨柳, 黄海中国电源学会学生会员, 邱荣禄, 王涵宇中国电源学会会员, 张兴中国电源学会高级会员. 一种减小共模电压的级联H桥逆变器容错运行策略. 电源学报, 2026 , 24 (9) : 351 -359 . DOI: 10.13234/j.issn.2095-2805.2026.9.351

Liu YANG, Hai HUANG, Ronglu QIU, Hanyu WANG, Xing ZHANG. A Fault-tolerant Operation Strategy for Cascaded H-bridge Inverters Aimed at Reducing Common-mode Voltage[J]. Journal of Power Supply, 2026 , 24 (9) : 351 -359 . DOI: 10.13234/j.issn.2095-2805.2026.9.351

基金

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国家自然科学基金资助项目(52107187)

参考文献

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2026年第24卷第9期

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文章信息

doi: 10.13234/j.issn.2095-2805.2026.9.351

接收时间：2024-11-28
首发时间：2026-10-29
出版时间：2026-09-30

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出版历史

收稿日期：2024-11-28
录用日期：2025-02-05

基金

National Natural Science Foundation of China(52107187)

国家自然科学基金资助项目(52107187)

作者信息

可再生能源接入电网技术国家地方联合工程实验室（合肥工业大学），合肥　230009

通讯作者:

王涵宇（1990—　），男，中国电源学会会员，通信作者，博士，副教授。研究方向：电力电子变换器的故障诊断及容错运行。E-mail：hywang@hfut.edu.cn。

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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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