电源学报

一种改进的五电平逆变器电流平衡开环控制方法

PDF下载

魏华 ¹ , 李敏 ¹ , 陈柯蒙 ² , 肖曦 ²

电源学报 | DC-AC逆变器 2025,23(4): 100-110

收起

电源学报 |DC-AC逆变器 2025 , 23 (4) : 100 -110

一种改进的五电平逆变器电流平衡开环控制方法

全屏

魏华¹, 李敏¹, 陈柯蒙², 肖曦²

作者信息

^1.北京ABB电气传动系统有限公司，北京　100015

^2.清华大学电机工程与应用电子技术系，北京　100084

通讯作者:

魏华（1977—　），男，通信作者，硕士，高级工程师。研究方向：高压大容量变频器。E-mail：hua.wei@cn.abb.com。

作者简介:

李敏（1977—　），女，硕士，高级工程师。研究方向：高压大容量变频器。E-mail：min.li@cn.abb.com。

陈柯蒙（1999—　），女，博士研究生。研究方向：微电网及变频器。E-mail：ckm22@mails.tsinghua.edu.cn。

肖曦（1973—　），男，博士，教授。研究方向：电力储能与微电网技术，高性能电机控制，机器人驱动控制技术，海浪发电技术。E-mail：xiao_xi@tsinghua.edu.cn。

Improved Current Balance Open-loop Control Method for Five-level Inverter

Hua WEI¹, Min LI¹, Kemeng CHEN², Xi XIAO²

Affiliations

^1.ABB Beijing Drive Systems Co., Ltd., Beijing 100015, China

^2.Department of Electrical Engineering, Tsinghua University, Beijing 100084, China

出版时间: 2025-07-30 doi: 10.13234/j.issn.2095-2805.2025.4.100

文章导航

摘要

收起

五电平逆变器被广泛应用于储能与电气传动领域，特别是高压大功率场合。随着功率等级提升，单个逆变单元的容量已无法满足需求，因此需要逆变器并联运行。相比于两电平或三电平拓扑，由于悬浮电容的存在，五电平逆变器并联运行时单相各模块间的环流问题更加突出。针对公共直流母线结构，提出1种改进的电流平衡开环控制方法。通过比较各个功率模块输出电流的大小，设置时间戳记，对矢量切换进行时移控制，从而人为引入1个正向或负向的不平衡电流以达到快速消除原有环流的效果。对1台6 kV并联高压逆变器进行实验，实验结果验证了所提方法的有效性及悬浮电容电压差对环流的影响，校正过程仅需0.1 ms，能够快速精确地完成电流平衡。

关键词

五电平逆变器 / 环流抑制 / 时移控制 / 电流平衡

Abstract

收起

Five-level inverters are widely used in the fields of energy storage and electric drive systems, especially in the high-voltage and high-power applications. As the power level increases, the capacity of one single inverter unit cannot meet the demand. Therefore, inverters need to be operated in parallel. Compared with the two-level or three-level topology, the circulating current between single-phase modules of parallel five-level inverters is more prominent due to the existence of floating capacitors. An improved current balance open-loop control method for a public DC bus structure is proposed. With a comparison of output current from each power module, a time stamp is set and the time shift control for vector switching is implemented, so that a positive or negative unbalanced current is artificially introduced to quickly eliminate the original circulating current. A set of 6 kV parallel high-voltage inverters were tested, and experimental results validated the effectiveness of the proposed method and the impact of voltage difference of the floating capacitor on the circulating current. The correction process only took 0.1 ms, and the current balance can be quickly and accurately completed.

Key words

Five-level inverter / circulating current suppression / time shift control / current balance

引用本文

魏华, 李敏, 陈柯蒙, 肖曦. 一种改进的五电平逆变器电流平衡开环控制方法. 电源学报, 2025 , 23 (4) : 100 -110 . DOI: 10.13234/j.issn.2095-2805.2025.4.100

Hua WEI, Min LI, Kemeng CHEN, Xi XIAO. Improved Current Balance Open-loop Control Method for Five-level Inverter[J]. Journal of Power Supply, 2025 , 23 (4) : 100 -110 . DOI: 10.13234/j.issn.2095-2805.2025.4.100

参考文献

收起

文献

收起

参考文献引证文献

排序方式：

[1]

叶满园, 喻生铭, 刘文芳, 等. 不对称级联九电平逆变器线性功率均衡控制策略[J]. 电工技术学报, 2024, 39(14): 4495-4507. Ye Manyuan, Yu Shengming, Liu Wenfang, et al. Linear power balance strategy for asymmetric cascaded H-bridge nine-level inverter[J]. Transactions of China Electrotechnical Society, 2024, 39(14): 4495-4507. (in Chinese)

[2]

Strache S, Wunderlich R, Heinen S. A comprehensive, quantitative comparison of inverter architectures for various PV systems, PV cells, and irradiance profiles[J]. IEEE Transactions on Sustainable Energy, 2014, 5(3): 813-822.

[3]

叶少茜, 张希, 朱翀. 兼顾共模电压抑制与中性点电压平衡的T型三电平逆变器DPWM策略[J]. 电源学报, 2024, 22(5): 133-142. Ye Shaoqian, Zhang Xi, Zhu Chong. DPWM strategy for T-type three-level inverter considering common-mode voltage reduction and neutral-point voltage balance[J]. Journal of Power Supply, 2024, 22(5): 133-142. (in Chinese)

[4]

Park J D, Candelaria J. Fault detection and isolation in low-voltage DC-bus microgrid system[J]. IEEE Transactions on Power Delivery, 2013, 28(2): 779-787.

[5]

吴翔宇, 张晓红, 尚子轩, 等. 基于频域阻抗网络建模分析的交直流微电网振荡问题研究[J]. 电工技术学报, 2024, 39(8): 2294-2310. Wu Xiangyu, Zhang Xiaohong, Shang Zixuan, et al. Research on the oscillation problem of AC-DC microgrids based on frequency domain impedance network modeling and analysis[J]. Transactions of China Electrotechnical Society, 2024, 39(8): 2294-2310. (in Chinese)

[6]

江风云. 考虑环流抑制的微网并联多逆变器稳定运行控制研究[J]. 电源学报, 2023, 21(3): 41-47. Jiang Fengyun. Research on stable operation control of parallel multi-inverter in microgrid considering circulating current suppression[J]. Journal of Power Supply, 2023, 21(3): 41-47. (in Chinese)

[7]

Bella S, Houari A, Djerioui A, et al. Robust model predictive control (MPC) for large-scale PV plant based on paralleled three-phase inverters[J]. Solar Energy, 2020, 202: 409-419.

[8]

范必双, 魏国强, 李泽扬, 等. 基于动态虚拟复阻抗的微网下垂控制策略[J]. 电气工程学报, 2020, 15(1): 48-54. Fan Bishuang, Wei Guoqiang, Li Zeyang, et al. Droop control method based on dynamic virtual complex impedance for microgrid[J]. Journal of Electrical Engineering, 2020, 15(1): 48-54. (in Chinese)

[9]

任碧莹, 张锐翔, 孙向东, 等. 基于虚拟电容的并联逆变器无功环流抑制策略[J]. 电气传动, 2020, 50(3): 28-36. Ren Biying, Zhang Ruixiang, Sun Xiangdong, et al. Control strategy of reactive circulating current suppression in parallel inverters based on virtual capacitance[J]. Electric Drive, 2020, 50(3): 28-36. (in Chinese)

[10]

施家博, 苗虹, 曾成碧. 新型并联逆变器功率均分与环流抑制策略[J]. 电力电容器与无功补偿, 2022, 43(4): 153-160. Shi Jiabo, Miao Hong, Zeng Chengbi. Power sharing and current-circulation suppression strategy of new shunt inverter[J]. Power Capacitor & Reactive Power Compensation, 2022, 43(4): 153-160. (in Chinese)

[11]

Wei Baoze, Marzàbal A, Ruiz R, et al. DAVIC: A new distributed adaptive virtual impedance control for parallel-connected voltage source inverters in modular UPS system[J]. IEEE Transactions on Power Electronics, 2019, 34(6): 5953-5968.

[12]

樊晨曦, 李海锋, Houari A, 等. 三相逆变器并联系统中环流抑制的研究[J]. 智慧电力, 2018, 46(5): 15-21. Fan Chenxi, Li Haifeng, Houari A, et al. Study on circulating current suppression in three-phase inverter parallel system[J]. Smart Power, 2018, 46(5): 15-21. (in Chinese)

[13]

易映萍, 鲁旭, 石伟. 新能源并网三电平逆变器并联系统中点电位平衡及环流抑制[J]. 可再生能源, 2019, 37(3): 386-392. Yi Yingping, Lu Xu, Shi Wei. Neutral point potential balance and circulating current suppression of the parallel connection system for a new energy grid-connected three-level inverter[J]. Renewable Energy Resources, 2019, 37(3): 386-392. (in Chinese)

[14]

Issa W, Al-Naemi F, Konstantopoulos G, et al. Stability analysis and control of a microgrid against circulating power between parallel inverters[J]. Energy Procedia, 2019, 157: 1061-1070.

[15]

姚修远, 金新民, 杨捷, 等. 三电平逆变器并联系统的零序环流抑制技术[J]. 电工技术学报, 2014, 29(S1): 192-202. Yao Xiuyuan, Jin Xinmin, Yang Jie, et al. Suppression technology of zero-sequence circulating current in three-level inverter parallel system[J]. Transactions of China Electrotechnical Society, 2014, 29(S1): 192-202. (in Chinese)

[16]

陈甜甜, 苏建徽, 汪海宁, 等. 三电平逆变器并联系统零序环流分析与抑制[J]. 电测与仪表, 2022, 59(3): 163-168. Chen Tiantian, Su Jianhui, Wang Haining, et al. Analysis and suppression of zero-sequence circulating current in parallel system of three-level inverters[J]. Electrical Measurement & Instrumentation, 2022, 59(3): 163-168. (in Chinese)

[17]

摆世彬, 田志浩, 王峰, 等. 基于准PR调节器的模块化多电平变流器输电控制方法[J]. 电源学报, 2023, 21(1): 74-80. Bai Shibin, Tian Zhihao, Wang Feng, et al. Transmission control method for modular multilevel converter based on quasi PR regulator[J]. Journal of Power Supply, 2023, 21(1): 74-80. (in Chinese)

[18]

Kerrouche S, Djerioui A, Zeghlache S, et al. Integral backstepping-ILC controller for suppressing circulating currents in parallel-connected photovoltaic inverters[J]. Simulation Modelling Practice and Theory, 2023, 123: 102706.

[19]

Kumar Gupta R, Mohan Mishra V, Singh N K. Elimination of circulating current in parallel operation of single phase inverter using droop controller[J]. Engineering Science and Technology, an International Journal, 2022, 28: 101025.

[20]

郭寅远, 王龙, 李宗原, 等. 多模块三电平逆变器并联系统环流谐振抑制[J]. 电力电子技术, 2020, 54(11): 121-124. Guo Yinyuan, Wang Long, Li Zongyuan, et al. Circulation resonance suppression of multi-module three-level inverter parallel system[J]. Power Electronics, 2020, 54(11): 121-124. (in Chinese)

[21]

王付胜, 邵章平, 张兴, 等. 多机T型三电平光伏并网逆变器的环流抑制[J]. 中国电机工程学报, 2014, 34(1): 40-49. Wang Fusheng, Shao Zhangping, Zhang Xing, et al. Circulating current reduction for T-type three-level grid-connected photovoltaic inverters[J]. Proceedings of the CSEE, 2014, 34(1): 40-49. (in Chinese)

[22]

Giang H, 王孝洪, 潘志峰, 等. 并联逆变器系统的环流分析与抑制技术[J]. 自动化技术与应用, 2018, 37(2): 83-88. Giang H, Wang Xiaohong, Pan Zhifeng, et al. Circulation analysis and suppression technology of parallel inverter system[J]. Techniques of Automation and Applications, 2018, 37(2): 83-88. (in Chinese)

[23]

Hou C C. A multi-carrier PWM for parallel three-phase active front-end converters[C]//2011 IEEE Energy Conversion Congress and Exposition. Phoenix, AZ, USA, 2011: 4081-4086.

[24]

阚加荣, 谢少军, 吴云亚. 无互联线并联逆变器的功率解耦控制策略[J]. 中国电机工程学报, 2008, 28(21): 40-45. Kan Jiarong, Xie Shaojun, Wu Yunya. Research on decoupling droop characteristic for parallel inverters without control interconnection[J]. Proceedings of the CSEE, 2008, 28(21): 40-45. (in Chinese)

2025年第23卷第4期

PDF下载

引用本文

BibTeX

文章信息

doi: 10.13234/j.issn.2095-2805.2025.4.100

接收时间：2023-03-17
首发时间：2026-10-26
出版时间：2025-07-30

补充材料

相关文章

文章信息

作者

出版历史

收稿日期：2023-03-17
修回日期：2023-05-11
录用日期：2023-08-07

基金

作者信息

^1.北京ABB电气传动系统有限公司，北京　100015

^2.清华大学电机工程与应用电子技术系，北京　100084

通讯作者:

魏华（1977—　），男，通信作者，硕士，高级工程师。研究方向：高压大容量变频器。E-mail：hua.wei@cn.abb.com。

参考文献

分享链接

https://castjournals.cast.org.cn/joweb/dyxb/CN/10.13234/j.issn.2095-2805.2025.4.100

分享至

全文二维码

扫描看全文

引用本文

BibTeX

本文的引用情况

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

关闭全屏

BibTeX
EndNote
RefWorks
TxT