电气传动2012，Vol.42Issue(6)：13-16,4.
一种单相锁相环的数字实现
Digital Implementation of Single Phase PLL
摘要
Abstract
The fundamental principle and performance of phase-locked loop for single-phase grid-connected system was analyzed. The method of constructing voltage vectors,in the a.j? Stationary reference based on second order generalized integrator (SOGI) was proposed. According to the principle of the digital phase-locked loop (DPLL) by means of the transformation from a,/? Stationary reference to d,q synchronously rotating reference for a three-phase system,a DPLL on the basis of a fictitious two-phase transformation for single-phase grid-connected conversion system was implemented. In order to restrain the influence of the grid frequency changes and improve the frequency range of DPLL operating. The synchronously sampling technique is used. Taking several line disturbances such as phase angle jump,frequency step,and harmonics content into consideration,the proposed method is simulated in Matlab software. Real time experiments based on a TMS32OF28O15 DSP platform are conducted for the proposed DPLL. Simulation experiment verify that phase lock loop system can measure the instantaneous frequency and phase of power system.关键词
数字锁相环/二阶广义积分器/同步采样Key words
digital PLLisecond order generalized integrator/ simultaneous sampling分类
信息技术与安全科学引用本文复制引用
吴春华,许富强,周笛青,付立..一种单相锁相环的数字实现[J].电气传动,2012,42(6):13-16,4.基金项目
上海市优秀青年教师科研专项基金(shu09019) （shu09019）
国家自然科学基金(51107079) （51107079）
