零扰动补偿控制电流模式Buck变换器

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摘要针对峰值电流模式开关功率变换器系统普遍存在的次谐波和混沌不稳定行为,本文提出了一类零扰动补偿抑制新思路。结合峰值电流模式Buck变换器中输入和输出量之间的稳态关系,给出了简化的零扰动补偿控制条件,构建出相应的控制方程及模拟实现电路,基于傅里叶级数分解导出了系统分岔边界方程,确定出控制参数的可控范围。最后,给出了零扰动补偿控制效果的仿真和实验结果,验证了理论分析的正确性和所提零扰动补偿控制思路的有效性。

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	卢伟国
	栗安鑫
	周雒维
	毕凯

关键词 ： Buck变换器, 峰值电流模式, 零扰动补偿, 非线性行为

Abstract：As to the sub-harmonic and chaos instabilities which commonly exist in the peak-current mode power converter systems, a new zero-perturbation control method is proposed in this paper. Combining with the steady state relationship between the input and output of the peak current-mode Buck converter, a simplified zero-perturbation compensation condition is given and the corresponding control equation as well as its simple analog-circuit realization is constructed out. At the same time the system bifurcation boundary equation is derived based on Fourier transform method, and hence the range of control parameter is obtained. With the application of the zero-perturbation compensation control to Buck converter, the simulation and experimental results presented in the last part verify the correctness of the theoretical analysis and the validness of the proposed control idea.

Key words： Buck converter peak current mode zero-perturbation compensation nonlinear behavior

收稿日期: 2012-03-05 出版日期: 2014-11-05

PACS:

TM461

基金资助:国家自然科学基金（51377185）,国家重点实验室自主研究项目（2007DA10512711210）和研究生创新基金（CDJXS11151151）资助项目

作者简介: 卢伟国男,1977年生,博士,副教授,研究方向为开关功率变换器的稳定性分析与控制等；栗安鑫男,1984年生,硕士研究生,研究方向为开关功率变换器的控制策略。

引用本文:

卢伟国, 栗安鑫, 周雒维, 毕凯. 零扰动补偿控制电流模式Buck变换器[J]. 电工技术学报, 2014, 29(8): 90-96. Lu Weiguo, Li Anxin, Zhou Luowei, Bi Kai. Zero-Perturbation Compensation Control of Current-Mode Buck Converter. Transactions of China Electrotechnical Society, 2014, 29(8): 90-96.

链接本文:

http://dgjsxb.ces-transaction.com/CN/Y2014/V29/I8/90

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