摘要
介绍一种基于超导储能(SMES)的动态电压补偿系统,该系统是一种电力电子控制装置,保证负载端的电压稳定。根据装置的结构特点和工作原理,提出基于SPWM的控制算法。该算法既能补偿三相对称电压凹陷,也能补偿单相电压凹陷。正常时针对三相不平衡,该算法也能严格控制负载侧的电压。样机实验结果验证了基于超导储能DVR的基本结构和控制方法的有效性。
A superconducting magnetic energy storage （SMES） based dynamic voltage restorer （DVR）, which is a powerelectronic controller that can protect sensitive loads from disturbances in the supply system, is described. In accordance with the structural feature and working principle of the device, Comprehensive algorithm of DVR based on the voltage pulsewidth-modulation is presented. It is demonstrated that this device can tightly regulate the voltage at the load terminal against segs （including 3-phase symmetry and asymmetry） and imbalance in the source side. Experiment results are included to illustrate the operating principles of a DVR.
出处
《电气应用》
北大核心
2005年第9期84-86,93,共4页
Electrotechnical Application
基金
国家杰出青年基金资助项目(50225723)
