电测与仪表2018，Vol.55Issue(4)：34-39,6.
二阶广义积分锁相环在三电平SVG中的应用
Application of the second-order generalized integrator phase locked loop in three-level SVG
摘要
Abstract
According to the operating characteristic of the three-level SVG of NPC converter,the grid-connected control model based on the dual second-order generalized integrator phase locked loop (DSOGI-PLL) is designed.The second-order generalized integrator (SOGI) is used to detect the positive-sequence component and the negative-sequence component of the grid voltage under unbalanced conditions.Combining with the characteristics of the frequency-adaptive SOGI and the characteristics of the synchronous reference frame phased-lock loop (SRF-PLL),the design of the phase-locked loop under unbalanced conditions is designed.From the results of the simulation,it can be concluded that the DSOGI-PLL is frequency-adaptive and can track the frequency and the phase of the grid voltage accurately and quickly.Finally,the practicability of the DSOGI-PLL is verified on a DSP and FPGA controlled SVG equipment.关键词
静止无功发生器/二阶广义积分器/锁相环/三相电压不平衡Key words
static var generator/second-order generalized integrator/phase-locked loop/unbalanced three-phase voltage分类
信息技术与安全科学引用本文复制引用
徐晟灏,姜建国,刘贺,刘云龙..二阶广义积分锁相环在三电平SVG中的应用[J].电测与仪表,2018,55(4):34-39,6.基金项目
国家高科技研究发展计划(863计划)资助项目(2014AA052602) （863计划）
