PWM型谐振直流环逆变器的建模与仿真*

作者：张双文,张德华 日期：2008-02-25/span> 浏览：3990 查看PDF文档

PWM型谐振直流环逆变器的建模与仿真*

张双文,张德华
(浙江大学 电气工程学院，浙江 杭州 310027)

摘要：传统的状态空间平均模型不能对电压、电流纹波大的变换器或存在交流电压、电流的变换器进行建模，给有源箝位谐振直流环节逆变器的建模带来了很大的困难。深入分析了有源箝位谐振直流环节逆变器的工作原理，采用双幅控制的脉宽调制控制方案，提出了一种新的适用于有源箝位谐振直流环节逆变器的建模方法。仿真实验显示，该模型不仅具有良好的输出波形，而且控制精度高,能够实现连续脉宽调制的要求。
关键词：谐振直流环节逆变器；双幅控制;脉宽调制;建模;仿真
中图分类号：TM464文献标识码：A文章编号：1001-4551(2008)02-0077-04

Modeling and simulation of PWM resonant DClink inverter
ZHANG Shuangwen, ZHANG Dehua
(College of Electrical Engineering, Zhejiang University, Hangzhou 310027, China)
Abstract: Modeling the active clamped resonant DClink inverter is very difficult. It has big voltage and current ripple, and AC voltage and current as well. So the traditional statespace averaged model can not be used to model the converter. The principle of active clamped resonant DClink inverter was analyzed in detail. A pulse width modulation (PWM) control strategy based on twoamplitude control technology was given. A new modeling method was presented. Simulation and experiment results verify that the proposed scheme realizes the continuous pulse width modulation, and has good output performance.
Key words: resonant DC link inverter (RDCLI); twoamplitude control; pulse width modulation (PWM); modeling; simulation