| 不连续导电模式V2控制Buck变换器分析 |
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| 引用本文： | 王凤岩,许建平.不连续导电模式V2控制Buck变换器分析[J].电工技术学报,2005,20(10):35-40. |
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| 作者姓名： | 王凤岩 许建平 |
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| 作者单位： | 西南交通大学电气工程学院,成都,610031;西南交通大学电气工程学院,成都,610031 |
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| 基金项目： | 中国科学院资助项目，高等学校博士学科点专项科研项目 |
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| 摘 要： | 采用平均开关模型方法建立了不连续导电模式(DCM)V2控制Buck变换器的小信号模型,得到了相应的交流小信号传递函数,进行了DCM模式V2控制、电流型控制和电压型控制Buck变换器的频域特性和时域特性仿真分析、比较和研究,仿真结果验证了在DCM模式下V2控制方法比电流型控制方法和电压型控制方法具有更好的负载动态响应特性;但是V2控制对输入电压扰动的抑制能力介于电流型和电压型控制之间.
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| 关 键 词： | V2控制方法 不连续导电模式 DC/DC变换器 数学模型 |
| 修稿时间： | 2005年1月12日 |
Analysis of V2 Controlled Buck Converter in Discontinuous Conduction Mode |
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| Wang Fengyan,Xu Jianping.Analysis of V2 Controlled Buck Converter in Discontinuous Conduction Mode[J].Transactions of China Electrotechnical Society,2005,20(10):35-40. |
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| Authors: | Wang Fengyan Xu Jianping |
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| Affiliation: | Southwest Jiaotong University Chengdu 610031 China |
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| Abstract: | The V2 controlled Buck converter, in discontinuous conduction mode (DCM) ,is deduced by using averaging model of PWM switch. The output impedance, input-to-output and control-to-output transfer functions are derived. The frequency domain simulation and time domain simulation of V2 controlled, current mode controlled and voltage mode controlled Buck converters in DCM are performed separately. The simulation results are analyzed and compared with each other. The results verify that the dynamic characteristic when load changing of the V2 control is better than that of current mode control and voltage mode control. The dynamic characteristic when input voltage changing of the V2 control is better than that of voltage mode control and worse than current mode control in DCM. |
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| Keywords: | V~2 control technique DCM DC/DC converter model |
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