| 基于有效占空比的ZVZCS全桥变换器建模与仿真 |
| |
| 引用本文： | 解光军,刘海平,徐慧芳,程心.基于有效占空比的ZVZCS全桥变换器建模与仿真[J].电子器件,2011,34(2):194-198. |
| |
| 作者姓名： | 解光军 刘海平 徐慧芳 程心 |
| |
| 作者单位： | 合肥工业大学电子科学与应用物理学院,合肥,230009 |
| |
| 基金项目： | 安徽省高等学校省级自然科学研究重点项目 |
| |
| 摘 要： | 分析了零电压-零电流开关(ZVZCS)全桥脉宽调制(PWM)变换器的工作原理,引入变压器副边电压有效占空比的概念并考虑电路元件的寄生参数,在Buck变换器的PWM开关等效模型的基础上,建立了ZVZCS全桥软开关变换器的小信号等效模型,该方法通用于任何可以计算出有效占空比的全桥变换器.通过对小信号传递函数的幅频和相频特性...
|
| 关 键 词： | ZVZCS全桥变换器 有效占空比 寄生参数 小信号等效模型 |
Model and Simulation of ZVZCS Full-Bridge Converter Based on Effective Duty Cycle |
| |
| XIE Guangjun,LIU Haiping,XU Huifang,CHENG Xin.Model and Simulation of ZVZCS Full-Bridge Converter Based on Effective Duty Cycle[J].Journal of Electron Devices,2011,34(2):194-198. |
| |
| Authors: | XIE Guangjun LIU Haiping XU Huifang CHENG Xin |
| |
| Affiliation: | (School of Electronic Science and Applied Physics,Hefei University of Technology,Hefei 230009,China) |
| |
| Abstract: | The principle of zero-voltage zero-current switching(ZVZCS)full-bridge PWM converter is analyzed.By introducing the effective duty cycle of the transformer’s secondary side voltage,considering the parasitic parameters of the circuit elements,and basing on the switching equivalent model of Buck PWM converter,the small-signal equivalent model of ZVZCS full-bridge converter is established.This method can be used in any full-bridge converter of which the effective duty cycle can be calculated.The small-signal transfer function’s amplitude-frequency and phase-frequency as well as the step function in the open-loop are analyzed.The results not only prove that the method has definite physical meaning,simple calculation and high precision,but also reveal that the ZVZCS full-bridge soft-switching converter has a higher stability comparing with conventional Buck converter. |
| |
| Keywords: | ZVZCS full-bridge converter effective duty cycle parasitic parameters small-signal equivalent model |
| 本文献已被 CNKI 万方数据 等数据库收录！ |
| 点击此处可从《电子器件》浏览原始摘要信息 |
|
点击此处可从《电子器件》下载全文 |
|
