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)：
- [1]Qiao C M,Smedley K M.Three-phase grid-connected inverters interface for alternative energy sources with unifiedconstant-frequency integration control[C].Thirty-sixth IEEE Industry Applications Conference,2001,4:2675-2682.
- [2]彭容,杜雄,周雒维.可调节有功无功的双Buck逆变器控制算法[J].电力电子技术,2004,38(6):44-47.
- [3]Gopinath R,et al.Development of a low cost fuel cell inverter system with DSP control[C].Proceedings of IEEE Power Electronics Specialists Conference,Cairns,Qld.,Australia,2002,1:309-314.
- [4]Schenck M E,Jih-Sheng Lai,Stanton K.Fuel cell and power conditioning system interactions[C].Twentieth Annual IEEE Applied Power Electronics Conference and Exposition,2005,1:114-120.
- [5]Xue Yaosuo,Chang Liuchen,Kjaer Sren Baekhj,et al.Topologies of single-phase inverters for small distributed power generators:an overview[J].IEEE Trans on Power Electronics,2004,19(5):1305-1314.
- [6]Smedley K M,Cuk S.One-cycle control of switching converters[C].22nd Annual IEEE Power Electronics Specialists Conference,1991:888-896.
- [7]Lai Z,Smedley K M.A general constant frequency pulse-width modulator and its applications[C].HFPC’96,Las Vegas,NV,1996:386-396.