新型单相Buck-Boost型并网逆变器的研究Study on A Novel Single-Phase Buck-Boost Grid-Connected Inverter
张荣;周雒维;罗全明;
摘要(Abstract):
针对可再生能源的并网问题,在已知功率单向流动、交流侧为有源网络的情况下,从降低系统成本的角度出发,提出了一种经济合理的新型单相Buck-Boost型并网逆变器,该逆变器由一个Buck-Boost变换器和一个工频逆变桥组成。文章首先分析了主电路并推导出控制方程,采用单周控制使输出电流跟踪输出电压,实现单位功率因数。常见的单周控制方程为一元一次方程,文中的控制方程为一元二次方程,因此设计了二阶的单周控制器。最后通过仿真验证了文中所提逆变器的有效性。
关键词(KeyWords): 并网逆变器;Buck-Boost变换器;单周控制;单位功率因数
基金项目(Foundation):
作者(Author): 张荣;周雒维;罗全明;
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参考文献(References):
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