新型全数字锁相环在无功补偿系统中的应用

Application of AADPLL Technology in SVC System

在无功补偿控制系统中,采用了新型全数字锁相环技术,其在传统全数字锁相环的基础上加入了自适应模值控制模块;该系统在采样中采用该新技术进行倍频锁相,对采样电压设计了同步6倍频,提供6相触发脉冲,同时设计了同步128倍频,以保证ad在每周期采样128点;给出了该装置的硬件实现方法,同时给出了软件设计的程序流程;仿真与试验结果表明新型全数字锁相环技术可以大大提高锁相速度和精度,进一步提高无功补偿系统的功率因数。

It introduees the SVC system based on the AADPLL （Advanced All Digital Phase-locked Loop） which adds self-adaptive mode control module to the traditional ADPLL. The system uses the technology for frequency multiplication phase-locked on the sampling. It multiplies by frequency of 6 on the sampling voltage to provide of the 6 trigger pulse, and multiplies by frequency of 128 to Sampling at 128 points per cycle. It gives the principle of the device hardware and the process of software. Simulations and physical experiments prove that it can greatly enhance the speed and accuracy of the phase-locked and greatly improve the system power factor of SVC.