| 引用本文: | 黄亮,杨雪梅,张锐明,等.基于LLCL滤波器混合阻尼策略设计方法[J].电力系统保护与控制,2020,48(9):150-156. |
| HUANG Liang,YANG Xuemei,ZHANG Ruiming,et al.Design method of hybrid damping strategy based on an LLCL filter[J].Power System Protection and Control,2020,48(9):150-156 |
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| 摘要: |
| 对基于LLCL滤波器的并网逆变器采用有源阻尼法与无源阻尼法相结合的混合阻尼控制，能很好地抑制系统谐振峰处和开关频率处谐波。首先，分析了LLCL滤波器无源阻尼法和有源阻尼法的特性以及两种方法对系统谐振峰处增益与开关频率处增益的影响。其次，将两种方法进行了对比，得出了LLCL滤波器混合阻尼参数的设计方法。最后，通过三相并网逆变器的仿真与实验，对提出的混合阻尼参数设计方法及控制策略进行验证。 |
| 关键词: 并网逆变器 LLCL滤波器 谐振峰 无源阻尼法 有源阻尼法 混合阻尼控制 |
| DOI：10.19783/j.cnki.pspc.190708 |
| 分类号: |
| 基金项目:国家重点研发计划项目资助(2018YFB0105700);武汉市应用基础研究计划项目资助(2017010201010116) |
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| Design method of hybrid damping strategy based on an LLCL filter |
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HUANG Liang1,YANG Xuemei1,ZHANG Ruiming2,QUAN Rui2
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(1. Wuhan University of Technology, Wuhan 430070, China;2. Guangshun New Energy Power Technology Co., Ltd., Foshan 528000, China)
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| Abstract: |
| For a grid-connected inverter based on an LLCL filter, a hybrid damping control method combining active and passive damping methods can well suppress the harmonic at the resonance peak and switching frequency of the system. First, the characteristics of passive and active damping methods of an LLCL filter and the effects of two methods on the gain at resonant peak and switching frequency of the system are analyzed. Secondly, the design method of hybrid damping parameters of LLCL filter is obtained by comparing the two methods. Finally, through simulation and experiment with a three-phase grid-connected inverter, the hybrid damping parameter design method and proposed control strategy are verified. This work is supported by National Key Research and Development Program of China (No. 2018YFB0105700) and Plan of Applied Basic Research Programs of Wuhan (No. 2017010201010116). |
| Key words: grid-connected inverter LLCL filter resonant peak passive damping method active damping method hybrid damping control |
