滞环电流控制双Buck逆变器建模及分析  

Modeling and Analysis of Hysteretic Current Controlled Dual Buck Inverter

作　　者：朱琦[1] 王慧贞[1] 

机构地区：[1]南京航空航天大学,航空电源航空科技重点实验,江苏南京210016

出　　处：《电力电子技术》2012年第2期63-65,共3页Power Electronics

摘　　要：通过分析滞环电流控制工作原理,建立了电感电流连续状态下滞环电流控制方式小信号模型。证明了滞环电流控制环在开关频率较高时带来的相位延迟较小,可等效为比例环节。将该结论应用于大信号分析,基于双Buck逆变器建立了半周期滞环电流控制单相逆变器的大信号模型,通过分析,进一步得出了单相逆变器外环补偿电路的设计准则,使其能很好地兼顾系统的动态及稳态性能。设计制作了一台115 V/400 Hz,2 kVA逆变器原理样机,实验结果验证了文中分析的正确性。The operation principle of hysteresis current controlled inverter is presented.And a small signal model in continuous current mode of hysteretic current mode control is derived.This model reveals that hysteretic current control under high frequency has relatively small lag,which makes current loop can be considered as a proportional component.Then larger signal model of hysteretic current controlled single-phase dual Buck inverter is presented.Further the compensation principles of single phase inverter are proposed,which can obtain a good comprise between static and dynamic performance.Finally,a 115 V/400 Hz,2 kVA inverter prototype is built,and experimental results verify the correctness and feasibility of the analysis.

关 键 词：逆变器 滞环电流控制 建模 

分 类 号：TM464[电气工程—电器]