低压/大电流输出两级DC-DC变换器的快速瞬态响应

2003 IEEE International Symposium on Industrial Electronics ( Cat. No.03TH8692) Pub Date : 2003-06-09 DOI:10.1109/ISIE.2003.1267285

S. Abe, J. Yamamoto, T. Zaitsu, T. Ninomiya

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引用次数: 7

摘要

提出了利用电流反馈控制快速改善两级DC-DC变换器暂态响应的方法。两级变换器由用作第一级的降压变换器和用作第二级的半桥变换器组成。对采用一级电感电流的控制系统和传统的电压反馈控制系统进行了分析比较。结果表明，通过在反馈控制回路中加入第一级电感电流，交频变高。实验结果与实验结果吻合较好，验证了所提控制策略的有效性。

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Fast transient response of two-stage DC-DC converter with low-voltage/high-current output

This paper presents the fast transient response improvement of two-stage DC-DC converter by using the current feedback control. The two-stage converter consists of a buck converter used as the first-stage and a half-bridge converter used as the second-stage. The proposed control system using the first-stage inductor current and the conventional voltage-feedback control system are analyzed and compared. As a result, it is analytically clarified that the crossover frequency becomes higher by adding the first-stage inductor current in the feedback control loop. The experimental confirmation was obtained with a good agreement, and the effectiveness of the proposed control strategy was verified.

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2003 IEEE International Symposium on Industrial Electronics ( Cat. No.03TH8692)

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