基于双dq锁相技术的三电平SVG研究

刘国海; 刘云龙; 李俊杰; 刘贺; 陈兆岭

刘国海,刘云龙,李俊杰,刘贺,陈兆岭.基于双dq锁相技术的三电平SVG研究[J].电测与仪表,2016,53(6):.
liuguohai,liuyunlong,lijunjie,liuhe,chenzhaoling.Study of three-level SVG based on the dual-dq phase locked technology[J].Electrical Measurement & Instrumentation,2016,53(6):.

基于双dq锁相技术的三电平SVG研究

Study of three-level SVG based on the dual-dq phase locked technology

DOI：

中文关键词: 静止无功发生器三电平双dq锁相环负序电压前馈 SVPWM

英文关键词:SVG three-level dual-dq PLL negative voltage feedforward control SVPWM

基金项目:国家高技术研究发展计划（863计划）

作者中文名	作者英文名	单位
刘国海	liuguohai	江苏大学
刘云龙	liuyunlong	江苏大学
李俊杰	lijunjie	上海交通大学
刘贺	liuhe	上海交通大学
陈兆岭	chenzhaoling	江苏大学

摘要点击次数: 2103

中文摘要:

本文研究了基于三电平NPC技术的静止无功发生器（SVG），针对电网不平衡，设计了双dq变换锁相方法，得到精确的电网电压相位角及电网电压正负序矢量，采用了负序电压前馈控制策略，实现了SVG在电网不平衡条件下的稳定运行。采用基于60°坐标系的SVPWM算法，该方法计算简单，易于数字化实现。本文在DSP与FPGA结构的三电平SVG数字控制系统上进行算法实现，实验结果表明：采用双dq锁相技术的SVG具有良好的动态响应性能和稳定性。

英文摘要:

The static var generator (SVG) based on three-level NPC converter is studied. The dual-dq PLL is proposed in unbalanced gird conditions to obtain accurate phase, positive and negative vector. The negative voltage feedforward control strategy is adopted to achieve SVG stable operation in unbalanced gird conditions. Space vector modulation (SVPWM) algorithm based on 60° coordinate system is proposed, which is simple in calculation and easy digital realization. The proposed algorithms are realized in digital control system of three-level SVG based on the structure of DSP and FPGA. The experimental results validate that the system has good dynamic response performance and stability.

查看全文查看/发表评论下载PDF阅读器

关闭