无互联线逆变器并联系统中并机控制系统的设计  

Design of Cut-in System of the Parallel Inverters without Control Interconnection Based on Droop Characteristic

作　　者：阚加荣[1] 吴云亚[1] 

机构地区：[1]盐城工学院电信学院,江苏盐城224051

出　　处：《盐城工学院学报（自然科学版）》2008年第4期50-53,共4页Journal of Yancheng Institute of Technology:Natural Science Edition

摘　　要：介绍了逆变器无互联线并联系统中单台逆变器切入交流母线的工作原理。设计了基于DSP控制的并联切入系统的整体框架,在此框架内比较了几种判断交流母线有无电压方法,并分别分析了这几种方法的优点和缺点,在此基础上提出了一种全新的判别方法,此方法与数字锁相环结合控制,大大节约了逆变器并联系统硬件成本和软件资源,取得了良好的控制效果。Judging whether the AC generatrix has electrification or not must be done before inverter unit cut in the parallel system. If there is voltage in the AC generatrix, then the inverter unit can parallel with other inverters directly; if there is no voltage in the AC generatrix, the working of phase - lock between the inverter unit and the system must be done before inverter unit cut in the parallel system. In this paper, based on the analysis of the traditional method that judges the AC generatrix whether has electrification or not, a new way is proposed. The new way combines with the DPLL（ digital phase - locked loop）, which is greatly saved hardware cost and software resource.

关 键 词：逆变器 并联 切入控制 数字锁相环 

分 类 号：TM464[电气工程—电器] TN86[电子电信—信息与通信工程]