宽输入电压范围Buck型变流器小信号环路

摘要
图/表
参考文献
相关文章 (15)

全文: PDF (605 KB)
输出: BibTeX | EndNote (RIS)

摘要 Buck型变流器的功率级小信号传递函数会随输入电压变化而变化, 对于宽输入电压范围的应用, 会出现稳定性和动态不能兼顾的问题。详细分析了Buck型变流器小信号特性, 总结了通常的设计方法, 并且提出了采用输入电压作为补偿量去影响PWM锯齿波斜率的方案, 从而抵消功率级中输入电压的影响。给出了一次侧控制和二次侧控制时具体的输入电压补偿电路。采用补偿电路的Buck型变流器在不同输入电压下环路增益的博德图一致性非常好, 变换器能够取得较好的稳定性和动态。该方案解决了宽输入电压范围Buck型变流器的小信号设计问题, 使得Buck型变流器更加适合于系统集成。

	服务

	把本文推荐给朋友
	加入我的书架
	加入引用管理器
	E-mail Alert
	RSS
	作者相关文章

关键词 ：小信号, 半桥, 动态特性, 相位裕量

Abstract：Buck type converters are widely used, however the power stage transfer function will be changed with the change of input voltage. The stability and dynamic performance are hardly designed to a perfect result simultaneously in wide input voltage range applications. Small signal characteristic of Buck converter is analyzed in detailed, and design considerations are introduced. Input voltage is applied as a compensation signal to change the slope of the sawtooth wave and the effect of input voltage in the power stage is eliminated. The concrete compensation circuits are presented for primary side control application and secondary side control application. The Buck type converter with compensation circuit owns the accordant bode plots of the loop gain and performs the good stability and dynamic under wide range input voltages. This method solves the small signal design issue for Buck type converters under wide range input voltages, and makes Buck type converter more suitable for system integration applications.

Key words： Small signal half bridge dynamic performance phase margin

收稿日期: 2009-03-21 出版日期: 2014-03-04

PACS:	TM46
	TM13

基金资助:中央高校基本科研业务费专项资金资助

作者简介: 顾亦磊男, 1978年生, 博士后, 研究方向为电源模块标准化和电源系统集成。吕征宇男, 1957年生, 教授, 博士生导师, 研究方向为电力电子中的电磁兼容, 智能控制, 功率变换器和电力电子器件等。

引用本文:

顾亦磊, 吕征宇, 陈世杰. 宽输入电压范围Buck型变流器小信号环路[J]. 电工技术学报, 2010, 25(12): 97-102. Gu Yilei, Lü Zhengyu, Chen Shijie. Small Signal Loop for Buck Type Converters UnderWide Input Voltage Range. Transactions of China Electrotechnical Society, 2010, 25(12): 97-102.

链接本文:

http://dgjsxb.ces-transaction.com/CN/Y2010/V25/I12/97

[1] 钱照明, 张军明, 吕征宇. 电力电子系统集成 [J]. 中国集成电路, 2003(50): 39-45.
Qian Zhaoming, Zhang Junming, Lü Zhengyu. Power electronics system integration[J]. China Integrated Circuit, 2003(50): 39-45.
[2] 王兆安, 杨旭, 王晓宝. 电力电子集成技术的现状及发展方向[J]. 电力电子技术, 2003, 37(5): 90-94.
Wang Zhaoan, Yang Xu, Wang Xiaobao. State-of-art and development trends of power electronics integration technology[J]. Power Electronics, 2003, 37(5): 90-94.
[3] 陈文洁, 杨旭, 杨栓科, 等. 分立元件构成的电力电子集成功率模块的设计[J]. 中国电机工程学报, 2003, 23(12)：104-110.
Chen Wenjie, Yangxu, Yang Shuanke, et al. A design of discrete components based integrated power modules [J]. Proceedings of the CSEE, 2003, 23(12)：104-110.
[4] 顾亦磊, 杭丽君, 吕征宇, 等. 磁放大后级调整技术在LLC谐振型变换器中的应用[J]. 电工技术学报, 2006, 21(9): 93-98.
Gu Yilei, Hang Lijun, Lü Zhengyu, et al. Application of magamp post regulation in LLC resonant converter[J]. Transactions of China Electrotechnical Society, 2006, 21(9): 93-98.
[5] 顾亦磊, 杭丽君, 吕征宇, 等. 一种适用于高压输出的软开关多谐振直流变流器[J]. 电工技术学报, 2006, 21(4): 102-106.
Gu Yilei, Hang Lijun, Lü Zhengyu, et al. Soft- switching multi-resonant DC/DC converter for high voltage output applications[J]. Transactions of China Electro-technical Society, 2006, 21(4): 102-106.
[6] 潘尚志, 钱照明, 雷娜. 一种通用的新型单/双正激型直流变换器电路仿真平均模型[J]. 中国电机工程学报, 2001, 21(6)：58-62.
Pan Shangzhi, Qian Zhaoming, Lei Na. An average model for unified forward DC-DC converter[J]. Proceedings of the CSEE, 2001, 21(6)：58-62.
[7] 张方华, 王慧贞, 严仰光. 推挽正激整流及其应用[J]. 中国电机工程学报, 2004, 24(4)：168-173.
Zhang Fanghua, Wang Huizhen, Yan Yangguang. The push-pull forward rectifier and its application[J]. Proceedings of the CSEE, 2004, 24(4)：168-173.
[8] Yungtaek Jang, Jovanovic M M. A new family of full-bridge ZVS converters[C]. IEEE APEC 2003, 2003: 622-628.
[9] Rozman A F. Low loss synchronous rectifier for application to clamped-mode forward: US Patent, 5303138[P]. 1994.
[10] Tan F D. The forward converter: from the classic to the contemporary[C]. IEEE APEC, 2002: 857-863.
[11] 许峰, 徐殿国, 柳玉秀. 具有最优动态响应的PWM型DC-DC变换器非线性控制新策略[J]. 中国电机工程学报, 2003, 23(12): 133-139.
Xu Feng, Xu Dianguo, Liu Yuxiu. A novel nonlinear control method for PWM DC-DC converter with optimizing transient response[J]. Proceedings of the CSEE, 2003, 23(12): 133-139.
[12] 欧阳长莲, 严仰光, 章宝国. 同步整流Buck变换器断续工作模式建模分析[J]. 电工技术学报, 2002, 17(6)：53-58.
Ouyang Changlian, Yan Yangguang, Zhang Baoguo. Modling analysis of synchronous rectifier Buck converter in discontinuous conduction mode[J]. Transactions of China Electro-technical Society, 2002, 17(6)：53-58.
[13] Yuri P, Milan M J. Small-signal analysis and control design of isolated power supplies with optocoupler feedback[J]. IEEE Transactions on Power Electronics, 2005, 20(4): 823-832.
[14] Robert W E, Dragan M. Fundamentals of power electronics[M]. Colorado USA: Kluwer Academic Publishers, 2001.
[15] 顾亦磊, 吕征宇, 钱照明. DC/DC拓扑的分类和选择标准[J]. 浙江大学学报(工学版), 2004, 38(10): 1375-1379.
Gu Yilei, Lü Zhengyu, Qian Zhaoming. DC/DC topology classification and selection criterion[J]. Journal of Zhejiang University(Engineering Science), 2004, 38(10): 1375-1379.