改进Y源并网逆变器的能量成型控制策略Energy-Shaping Control Strategy of Improved Y-Source Inverter
冉岩;刘鸿鹏;刘宽;王卫;
摘要(Abstract):
改进型Y源并网逆变器作为非线性系统,在并网控制中若采用传统PI控制则存在鲁棒性较差、调节速度慢等问题。为此提出采用端口受控哈密顿(port-controlled Hamiltonian,PCH)模型和能量成型的控制方法,从能量的角度研究改进型Y源并网逆变器的控制问题。通过状态平均法将改进型Y源并网逆变器模型转化为PCH模型,同时根据功率等级确定系统的平衡点,进而设计系统的控制器参数;并引入自适应控制,补偿耦合电感漏感带来的直通占空比损耗问题。最终,为了验证所提能量成型控制方法的有效性,搭建了一台200W的基于TMS320F2812的实验样机。
关键词(KeyWords): 改进Y源逆变器;哈密顿系统;能量成型控制;自适应控制
基金项目(Foundation): “台达环境和教育基金(DREG2016001)”的资助
作者(Author): 冉岩;刘鸿鹏;刘宽;王卫;
Email:
DOI: 10.13335/j.1000-3673.pst.2018.0940
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