| 用符号法分析PWM开关功率变换器闭环系统的稳态 |
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| 引用本文： | 陈艳峰,丘水生. 用符号法分析PWM开关功率变换器闭环系统的稳态[J]. 电子学报, 2000, 28(7): 8-11 |
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| 作者姓名： | 陈艳峰 丘水生 |
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| 作者单位： | 华南理工大学电子与通信工程系,广州 510640 |
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| 基金项目： | 广东省自然科学基金!(No.940 0 89)，国家教委高校博士点专项基金!(No.94561 0 2 ) |
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| 摘 要： | 本文将等效小参量法推广到PWM开关功率变换器闭环系统的稳态分析中,着重阐述了其基本原理及求解过程.该方法可获得闭环系统稳态直流解、占空比及输出纹波解析解的符号表达式,并能直接说明纹波对占空比的影响及其同开关频率的关系.文中实例表明,此方法计算过程简单,准确性较高,具有明显的实用价值.
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| 关 键 词： | 开关功率变换器 闭环系统 符号分析 |
| 收稿时间： | 1999-04-05 |
Steady-State Analysis of Closed-Loop PWM Switching Power Converter Systems Using Symbolic Method |
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| CHEN Yan-feng,QIU Shui-sheng. Steady-State Analysis of Closed-Loop PWM Switching Power Converter Systems Using Symbolic Method[J]. Acta Electronica Sinica, 2000, 28(7): 8-11 |
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| Authors: | CHEN Yan-feng QIU Shui-sheng |
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| Affiliation: | Dept.of Electronic Engineering,South China Univ.of Tech.,Guangzhou 510640,China |
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| Abstract: | An extension of Equivalent Small Parameter(ESP) method to analysis of PWM feedba ck controlled power converter systems,together with its basic principle and deri vation of solutions,is presented in detail.The symbolic expressions of steady-s tate DC outputs,duty cycle and output ripples are given,which can be used to exp lain the relationships among duty cycle,ripples and switching frequency.It is co nfirmed by the examples that the proposed method offers the advantages of both s implicity and accuracy. |
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| Keywords: | switching power converter closed-loop systems symbolic analysis |
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