不对称半桥变换器的建模与仿真  

Model and Simulation of an Asymmetrical Half Bridge Converter

作　　者：杨帆 YANG Fan(Lianyungang JARI Electronics CO.,LTD,Lianyungang 222000,Chin)

机构地区：[1]连云港杰瑞电子有限公司,江苏连云港222000

出　　处：《通信电源技术》2018年第5期21-23,共3页Telecom Power Technology

摘　　要：不对称半桥变换器利用自身寄生器件实现了开关管的零电压操作,在不影响电路整体结构,不增加成本的前提下达到了很好的输入、输出特性。文章采用状态空间平均法建立不对称半桥变换器功率级的平均电路模型及控制电路小信号模型,进而对整个变换器的动态特性和稳定性进行了分析,并设计了补偿器。最后,用MATLAB软件和PSPICE软件进行仿真,验证该变换器的稳定性能和动态性能。Asymmetrical Half Bridge Converter （AHBC） can take use of the parasitic components in the circuit and realize Zero-Voltage Switching （ZVS） of power devices. The AHBC can get good input and output performances without much change in the whole circuit or large increasing in the costs. In the paper, the average circuit model of the power stage and the small signal model of control circuit for AHBC are established by means of state-space-averaging method, the dy- namic characteristic and stability of the converter are analyzed, and the compensator is designed. Using MATLAB software and PSPICE software to imitate, verify the stability and dynamic performance of the converter.

关 键 词：不对称半桥 状态空间平均法 仿真 

分 类 号：TM46[电气工程—电器]