吕超,武宇喆,王鑫龙

• 1:内蒙古电力科学研究院
• 2:内蒙古电力(集团)有限责任公司鄂尔多斯电业局
• 3:内蒙古电力经济技术研究院

摘要(Abstract)：

高频逆变器具有响应速度快、重量轻等优势,随着配电网大量电力电子设备接入,其应用将越来越广。为克服传统H桥式并网逆变器存在的桥臂直通隐患,提出一种适用于高频应用的交错并联双Buck逆变器。该高频并网逆变器采用SiC作为功率器件,在双Buck电路的基础上使用了LCL 3阶滤波器,建立该系统的波特图并分析系统不稳定的原因,通过引入1对零极点来补偿谐振尖峰。最后搭建了一台5 kW双Buck逆变器实验样机,对所提拓扑和补偿控制算法的有效性进行了实验验证。实验结果表明,基于SiC功率器件的新型拓扑结构大幅提升了变换器的工作频率,降低了滤波器的体积;补偿控制算法改善了系统的频域特性、有效提高了系统性能。

关键词(KeyWords)： 配电网;逆变器;高频;SiC;LCL滤波器;补偿控制

Abstract:

Keywords:

基金项目(Foundation):

作者(Author): 吕超,武宇喆,王鑫龙

DOI: 10.19635/j.cnki.csu-epsa.000472

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