| BUCK—BOOST DC／DC变换器RHP零点研究 |
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| 引用本文： | 周习祥.BUCK—BOOST DC／DC变换器RHP零点研究[J].四川轻化工学院学报,2010(1):110-112. |
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| 作者姓名： | 周习祥 |
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| 作者单位： | 益阳职业技术学院,湖南益阳413049 |
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| 摘 要： | 对于BUCK—BOOSTDC／DC变换器，如何获得较大的稳定裕度和良好的高频瞬态性能一直以来都是令研究人员棘手的问题。要使这种变换器稳定工作，往往需要在一个很低的频率下就滑离控制电路的增益，文章基于变换器的占空比控制方式与电流控制公式分析了右半平面零点的动态特性，为提高电源系统的稳定性提供了理论依据。
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| 关 键 词： | RHP零点 占空比控制 电流控制 小信号 |
Right Half Plane Zero Spot Research of BUCK-BOOST DC/DC Converter |
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| ZHOU Xi-xiang.Right Half Plane Zero Spot Research of BUCK-BOOST DC/DC Converter[J].Journal of Sichuan Institute of Light Industry and Chemical Technology,2010(1):110-112. |
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| Authors: | ZHOU Xi-xiang |
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| Affiliation: | ZHOU Xi-xiang ( Yiyang Vocational Technical College, Yiyang 413049, China) |
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| Abstract: | As for the BUCK-BOOST DC/DC converter, transient state performance is the researchers＇ thorny question. how to obtain the bigger stability margin and high frequency In order to make this kind of converter work normally, it often needs to slide away the control circuit＇S gain under a very low frequency to control circuit＇s gain, this paper has analyzed which right half plane zero spot dynamic characteristic based on converter＇s dutyfactor control mode and the current control formula. The theory basis for enhance electrical power system＇s stability is provided. |
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| Keywords: | fight half plane zero spot dutyfactor control current control small signal |
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