电源学报

LCL型并网逆变器电容电流反馈有源阻尼特性通用图形化评估方法及应用

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李智 ¹ , 曾垂辉 ¹ , 谢俊 ¹ , 王伟 ²^,³ , 姚俊 ²^,³ , 张杰 ²^,³

电源学报 | DC-AC逆变器 2025,23(8): 60-69

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电源学报 |DC-AC逆变器 2025 , 23 (8) : 60 -69

LCL型并网逆变器电容电流反馈有源阻尼特性通用图形化评估方法及应用

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李智¹, 曾垂辉¹, 谢俊¹, 王伟²^,³, 姚俊²^,³, 张杰²^,³

作者信息

^1.国家电网公司华中分部，武汉　430077

^2.南瑞集团有限公司（国网电力科学研究院），南京　211106

^3.国网电力科学研究院武汉南瑞有限责任公司，武汉　430074

通讯作者:

王伟（1982—　），男，通信作者，硕士，高级工程师。研究方向：储能监控系统，储能优化调度。E-mail：47178146@qq.com。

作者简介:

李智（1981—　），男，本科，高级工程师。研究方向：电网一次设备管理，设备带电监测。E-mail：4514330@qq.com。

曾垂辉（1989—　），男，硕士，工程师。研究方向：电网资产管理/运行管理。E-mail：wangwei9580@126.com。

谢俊（1980—　），男，博士，教授级高级工程师。研究方向：电网一二次设备原理研究及运行管理。E-mail：xjvhj@163.com。

姚俊（1983—　），男，硕士，高级工程师。研究方向：全钒液流电池储能。E-mail：290988064@qq.com。

张杰（1979—　），男，博士，教授级高级工程师。研究方向：全钒液流电池储能。E-mail：11831009@qq.com。

General Graphical Evaluation Method for Capacitor Current Feedback Active Damping Characteristics of LCL Grid-connected Inverter and Its Applications

Zhi LI¹, Chuihui ZENG¹, Jun XIE¹, Wei WANG²^,³, Jun YAO²^,³, Jie ZHANG²^,³

Affiliations

^1.Central China Branch of State Grid Corporation of China, Wuhan 430077, China

^2.NARI Group Co., Ltd. (State Grid Electric Power Research Institute), Nanjing 211106, China

^3.Wuhan NARI LLC, State Grid Electric Power Research Institute, Wuhan 430074, China

出版时间: 2025-12-30 doi: 10.13234/j.issn.2095-2805.2025.8.60

文章导航

摘要

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电容电流反馈有源阻尼广泛用于LCL谐振峰抑制。控制延时会引起有源阻尼等效的虚拟阻抗表现为负阻尼效应，导致系统的稳定性降低。为削弱负阻尼效应，需根据LCL谐振频率合理选择和设计反馈函数。基于此，提出了1种通用的图形化评估方法，可直观界定出不同反馈函数的正阻尼频率范围，为选择合适的有源阻尼反馈函数提供指导。运用该方法，提出对LCL谐振频率波动具有强鲁棒性的相位滞后补偿器。在1台6 kW单相LCL型并网逆变器上进行实验，实验结果验证了理论分析的正确性。

关键词

并网逆变器 / LCL滤波器 / 电容电流反馈 / 有源阻尼 / 评估方法

Abstract

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The capacitor-current feedback active damping is widely applied to attenuate the LCL resonance. Due to the control delay, the virtual impedance equivalence of active damping may exhibit a negative-damping effect, challenging the system stability. To address this issue, the feedback function should be well selected and designed according to the LCL resonance frequency. On the basis, a general graphical evaluation method is proposed, which can intuitively identify the positive-damping frequency ranges of different feedback functions and thus provide guidance for selecting a reasonable active damping feedback function. Using the proposed method, a phase-lag compensator with strong robustness against the fluctuation of LCL resonant frequency is put forward. Experiments were carried out on a 6 kW single-phase LCL grid-connected inverter, and results verified the theoretical analysis.

Key words

Grid-connected inverter / LCL filter / capacitor current feedback / active damping / evaluation method

引用本文

李智, 曾垂辉, 谢俊, 王伟, 姚俊, 张杰. LCL型并网逆变器电容电流反馈有源阻尼特性通用图形化评估方法及应用. 电源学报, 2025 , 23 (8) : 60 -69 . DOI: 10.13234/j.issn.2095-2805.2025.8.60

Zhi LI, Chuihui ZENG, Jun XIE, Wei WANG, Jun YAO, Jie ZHANG. General Graphical Evaluation Method for Capacitor Current Feedback Active Damping Characteristics of LCL Grid-connected Inverter and Its Applications[J]. Journal of Power Supply, 2025 , 23 (8) : 60 -69 . DOI: 10.13234/j.issn.2095-2805.2025.8.60

基金

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国家电网有限公司科技项目(SGHZ0000JSJS2310361)

参考文献

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2025年第23卷第8期

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文章信息

doi: 10.13234/j.issn.2095-2805.2025.8.60

接收时间：2024-01-26
首发时间：2026-10-26
出版时间：2025-12-30

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收稿日期：2024-01-26
修回日期：2024-05-13
录用日期：2024-06-19

基金

Scientific and Technological Project of State Grid Corporation of China(SGHZ0000JSJS2310361)

国家电网有限公司科技项目(SGHZ0000JSJS2310361)

作者信息

^1.国家电网公司华中分部，武汉　430077

^2.南瑞集团有限公司（国网电力科学研究院），南京　211106

^3.国网电力科学研究院武汉南瑞有限责任公司，武汉　430074

通讯作者:

王伟（1982—　），男，通信作者，硕士，高级工程师。研究方向：储能监控系统，储能优化调度。E-mail：47178146@qq.com。

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https://castjournals.cast.org.cn/joweb/dyxb/CN/10.13234/j.issn.2095-2805.2025.8.60

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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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