王海松;王晗;张建文;蔡旭;

• 1:风力发电研究中心(上海交通大学)

摘要(Abstract)：

采用电容支路串联电阻的无源阻尼方案能够较好解决LCL型并网逆变器存在的电流谐振问题,但其存在阻尼电阻功率损耗较大的缺点。为此,提出了分裂电容无源阻尼方案。该方案将LCL的电容支路均分为2部分,只在其中一半电容上串联阻尼电阻。分析了该方案下LCL滤波器在固有谐振峰值的阻尼效果,并对比了不同阻尼电阻下其与传统方案的功率损耗情况。结果表明,相比传统的完全电容阻尼方案,选择合适的阻尼电阻后,采用所提方案能够获得几乎相同的阻尼效果,且能够降低阻尼电阻功率损耗。仿真结果验证了理论分析的正确性。

关键词(KeyWords)： LCL滤波器;并网逆变器;无源阻尼控制;完全电容;分裂电容

Abstract:

Keywords:

基金项目(Foundation): 国家863高技术基金项目(003 2011AA05A104);; 国家电网科技项目(风电场聚合模型研究)资助~~

作者(Author): 王海松;王晗;张建文;蔡旭;

Email:

DOI: 10.13335/j.1000-3673.pst.2014.04.012

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