数字锁相技术在逆变器并联系统中的应用  

Digital Phase-lock Technology applied to Inverter Parallel System

作　　者：刘爱忠[1] 刘俊华 肖岚[1] 

机构地区：[1]南京航空航天大学,江苏南京210016 [2]南京工程高等职业学校,江苏南京210016

出　　处：《电力电子技术》2007年第7期80-82,共3页Power Electronics

摘　　要：逆变器并联系统中各模块输出电压的频率、相位应时刻保持一致,这样才能保证并联系统的安全运行。针对输出母线电压频率可变(300-500Hz)的并联系统,研究了采用TMS320F240型数字信号处理器(DSP)实现锁相的锁相环原理和方法;给出了硬件实现电路及算法流程图。实验结果验证了该方案的可行性和有效性。In order to realize the safe operation of inverter parallel system,the frequency and phase of each module＇ s output voltage should be the same at any moment.The digital phase-locked loop was used for the parallel system whose output commom bus voltage frequency is variable.The principle and the technique based on TMS320F240 DSP are studied.Both the pratical circuit and software arithmetic are given.The experimental results prove the scheme is feasible and effective.

关 键 词：逆变器 并联 锁相环控制/数字信号处理器 

分 类 号：TM464[电气工程—电器]