光伏并网系统中的数字锁相环  

DPLL based on DSP applied to solar grid-connection system

作　　者：李玲[1] 谢利理[1] 脱秀林[1] 秦旭[1] 

机构地区：[1]西北工业大学自动化学院,陕西西安710129

出　　处：《电源技术》2010年第8期845-847,共3页Chinese Journal of Power Sources

基　　金：研究生创业种子基金项目(Z2010051)

摘　　要：针对光伏分布式电源并网系统中光伏输出电流的调频调相问题,给出了一种基于DSP的数字锁相技术。利用DSP内部的捕获单元、通用定时器和比较单元,方便地实现了对电网电压和光伏发电输出电流的信号捕获,从而达到调频调相的目的,达到并网条件。通过实验表明,此方法精度高,锁相速度快,保证了并网系统的可靠性和高效性。The technology about digital phase lock loop（DPLL） based on DSP was introduced for regulating frequency and phase of current from grid-connection of solar distributed power supply.The voltage of grid and current of solar generation were easily collected by capture unit,general timer and compare unit of DSP.The conditions of grid-connection about regulation of frequency and phase were achieved.This method was proved to be having high accuracy and high lock speed.And the reliability and high efficiency ccould be ensured.

关 键 词：DSP 数字锁相 光伏 并网 调频调相 

分 类 号：TM914.4[电气工程—电力电子与电力传动]