In order to solve the problem of complex computation and slow response of the grid voltage lock algorithms currently,this paper proposed the grid voltage synchronous signal detection algorithm based on the amplitude calculation.Its aim is to accelerate the response speed of the algorithm and achieve a fast track to grid voltage synchronous signal when the grid voltage is good.Firstly,this paper introduced the principle of the grid synchronous signal detection algorithm to meet the requirement of speediness.Then,three kinds of grid voltage amplitude calculation algorithms were given,and they were compared and analyzed in detail.Finally,the simulation and experiment have verified the effectiveness of the three algorithms to detect the grid voltage synchronous signal.%针对目前电网电压锁相算法计算复杂、响应速度慢的缺陷,本文提出了基于幅值计算的电网电压同步信号检测算法,该算法的设计思路是当电网电压波形畸变较小时,得到一种快速跟踪电网电压同步信号的算法.本文首先介绍了满足快速性要求的电网电压同步信号检测算法原理,然后给出了三种计算电网电压幅值的算法,并对它们进行了对比分析,最后通过仿真和实验分别验证了本文提出的三种电网同步信号检测算法在检测电网电压同步信号上的有效性.
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