新能源发电系统中并网逆变装置的锁相技术研究  

Research on Phase Locked Technique of Grid Inverter in New Energy System

作　　者：刘乐[1] 冉成科[2,3] 张贵涛[3] 

机构地区：[1]河南省电力公司漯河供电公司,河南漯河462000 [2]湖南机电职业技术学院,长沙410151 [3]长沙理工大学电气与信息工程学院,长沙410076

出　　处：《微电机》2014年第6期61-64,共4页Micromotors

基　　金：湖南省自然科学基金项目(2011JJ5027)

摘　　要：针对电网中出现瞬态过冲电流和谐波等问题会导致传统的锁相技术具有较大的误差,本文通过相关理论分析提出一种新型锁相技术,该方法根据滤波电路会使检测电路产生相位偏移,在程序中添加一个相角就能消除这个相位偏移,从而不会影响锁相精度的技术,提高并网逆变器的性能,增强新能源的利用效率。仿真结果验证所提出的锁相技术的正确性与可行性。In view of fact the traditional phase locked technique has great error caused by the transient overshoot current and harmonic,this paper put forward a new phase locked technique through the theoretical analysis. This new technique can eliminate the phase shift which filter circuit produces through a method that a phase analysis is added in the process. This new technique not only guaranteed the accuracy of phase locked technique,but also improved the performance of grid inverter and strengthened the utilization efficiency of new energy. Simulations verify the validity and feasibility.

关 键 词：锁相技术 新型 相位偏移 仿真结果 

分 类 号：TM315[电气工程—电机]