基于TMS320F2812的光伏并网系统新型锁相技术  

A novel technology of software phase-locked for solar grid-connection system based on TMS320F2812

作　　者：夏向阳[1,2] 彭振江[1] 

机构地区：[1]长沙理工大学电气与信息工程学院,湖南长沙410077 [2]长沙理工大学智能电网运行与控制湖南省重点实验室,湖南长沙410114

出　　处：《电源技术》2013年第7期1180-1183,共4页Chinese Journal of Power Sources

基　　金：2010年广东省科技厅重大科技专项(2010A08080-4023);2011年湖南省科技计划项目(2011GK3118)

摘　　要：为了满足光伏并网系统输出电流锁相快速、稳定和高精度的要求,提出了一种新的基于TMS320F2812的软件锁相算法和硬件电路结构。这种算法是对周期寄存器值进行PI调节的同时对调制正弦表的指针变量进行比例调节,提高了锁相的快速性和稳定性。在自制的样机上验证了该算法的实用性,能较好地满足光伏并网和单位功率因数的要求。In order to achieve the speediness,stability and high precision of phase-locked current from grid-connection solar distributed power supply,a new software phase lock algorithm and the hardware circuit structure based on TMS320F2812 was put forward.This algorithm proceeded PI adjustment of period registers values,had a proportional control to the variable of the modulation sine table pointer in the meantime,and improved the phase lock efficiency.A prototype was used to verify this algorithm.The results show that the algorithm is effective and feasible to meet the requirements of the photovoltaic grid and unity power factor.

关 键 词：光伏 TMS320F2812 并网 软件锁相 

分 类 号：TM615[电气工程—电力系统及自动化]