| 开关DC-DC变换器斜坡补偿的稳定性控制研究 |
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| 引用本文： | 包伯成,许建平,刘中. 开关DC-DC变换器斜坡补偿的稳定性控制研究[J]. 电子科技大学学报(自然科学版), 2008, 37(3): 397-400 |
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| 作者姓名： | 包伯成 许建平 刘中 |
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| 作者单位： | 1.南京理工大学电子工程系 南京 210094; |
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| 摘 要： | 从混沌稳定性控制的角度研究了采用斜坡补偿的buck、boost和buck-boost开关DC-DC变换器的稳定性控制机理,建立了采用补偿斜坡的开关变换器的离散映射迭代模型,得到了开关变换器电路的稳定性判据和补偿斜坡斜率的表达式。利用分叉图、Lyapunov指数谱和时域波形图,清晰地描绘出补偿斜坡电流(或电压)对开关变换器的电路稳定性能的影响。研究结果表明,采用斜坡补偿技术能有效地改善开关DC-DC变换器的稳定性。
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| 关 键 词： | 离散映射模型 斜坡补偿 稳定性控制 开关DC-DC变换器 |
| 收稿时间： | 2007-11-16 |
| 修稿时间： | 2007-11-16 |
Study on Stability Control of Ramp Compensation for Switched DC-DC Converter |
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| BAO Bo-cheng,XU Jian-ping,LIU Zhong. Study on Stability Control of Ramp Compensation for Switched DC-DC Converter[J]. Journal of University of Electronic Science and Technology of China, 2008, 37(3): 397-400 |
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| Authors: | BAO Bo-cheng XU Jian-ping LIU Zhong |
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| Affiliation: | 1.Department of Electronic Engineering,Nanjing University of Science and Technology Nanjing 210094;2.College of Electrical Engineering,Southwest Jiaotong University Chengdu 610031 |
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| Abstract: | Regarding to the chaos stability control, the mechanism of stability control caused by ramp compensation in buck, boost, and buck-boost converters is studied. The corresponding discrete map models are built, and the circuit stability criterions and the slope expressions of compensating ramp are achieved. With their bifurcation diagram, Lyapunov exponent spectrum, and time-domain waveform, the performance of switching converter circuit by utilizing compensating ramp current (or voltage) are given. The research results indicate that the ramp compensation technique can effectively improve stability of switched DC-DC converter. |
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