基于比例重复控制的SVG无功补偿系统研究

The research of SVG reactive compensation with Repetitive-Proportion control strategy

在详细分析SVG无功补偿原理的基础上,针对传统控制策略难以满足SVG系统高性能指标要求,设计采用了引入电压前馈的比例重复复合电流内环控制策略,同时,针对传统的基于瞬时无功理论的无功检测方法不足,设计采用了适合于单相电路的新型无功电流检测方法.文中给出了详细的设计方案,为进一步验证文中策略的有效性,构建了完整的系统仿真模型并进行了实验验证,结果表明文中控制策略性能良好,输出电流质量得到改善、系统动静态特性优良。

In view of the traditional control strategy meets the requirement of SVG system performance index, the introduction of voltage feedforward and proportion ＆ repetitive current inner loop control strategy are adopted, at the same time, to void the insufficient of the traditional reactive power detection method with reactive power theory, a new type of reactive current detection method for single-phase SVG is adopted. The detailed design scheme is given out, to test and verify the effectiveness of the strategy, he completely simulation and experiment prototype platform are built, the results show that the control strategy of good performance, improved the quality of output current, system dynamic and static characteristics.