高速实时网络控制微电网逆变器并联技术  

HIGH-SPEED,REAL-TIME NETWORK CONTROLLED INVERTER PARALLEL TECHNOLOGY FOR MICROGRID PURPOSE

作　　者：郑伟锋[1] 马皓[1] 何湘宁[1] 

机构地区：[1]浙江大学电气工程学院,杭州310027

出　　处：《太阳能学报》2015年第9期2138-2145,共8页Acta Energiae Solaris Sinica

基　　金：国家自然科学基金(51177149)

摘　　要：提出一种应用于新能源分布式供电系统的高速、实时网络控制微电网逆变器并联技术。系统中网络通讯线上速度百倍于CAN通讯,大量采样信号与控制信号以数据帧的形式在主站控制器与从站控制器间交互。为了在非线性负载时输出电压有较优异的总谐波失真THD值,该文讨论单机基于重复控制及其改进方法的瞬时均流算法,比较不同重复控制方法下系统均流控制器的设计方法和性能效果。实验表明:非线性负载条件下输出电压具有较优异的THD值,且在负载切换时,可保证优良的动态均流效果。A new kind of high-speed, real-time network Ethercat is used in inverter parallel system to facilitate communication between inverters in a microgrid, which guarantees more long-distance inverters to be connected to provide current to a common load. Moreover, the repetitive controller is employed to regulate inverter output voltage. Several kinds of repetitive controller are compared, and the design procedures of corresponding current sharing controller are provided. Experimental results showed that this kind of inverter parallel technology achieves satisfactory THD value of output voltage under nonlinear load, and at the same time, guarantees excellent current sharing under load transition.

关 键 词：分布式供电 网络控制 改进的重复控制 THD 非线性负载 

分 类 号：TM464[电气工程—电器]