亓才;王萍;贝太周;王慧慧;李楠;

• 1:智能电网教育部重点实验室(天津大学)

摘要(Abstract)：

同步旋转坐标系下的PI控制已经在三相系统中得到了广泛的应用。然而,对于单相并网逆变器,由于主电路缺少一个自由度,无法直接通过传统坐标变换将交流量转换成直流量。传统的解决方案是通过将实际物理量延时1/4个电网周期构造虚拟正交量,该方法会恶化系统的动态响应。通过分析并网电流交流量与直流量之间的关系,构建了一种基于变步长最小均方算法的静止/旋转坐标变换策略,无需构造虚拟正交量。在所提策略的基础上增加了预测环节,提高了系统的动态响应速度。仿真与样机试验验证了所提控制策略的有效性。

关键词(KeyWords)： 单相逆变器;矢量控制;幅值检测;变步长最小均方算法;坐标变换

Abstract:

Keywords:

基金项目(Foundation): 高等学校博士学科点专项科研基金资助项目(2012 0032110070)~~

作者(Author): 亓才;王萍;贝太周;王慧慧;李楠;

Email:

DOI: 10.13335/j.1000-3673.pst.2015.12.021

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