双缘COT调制数字电压型控制Buck变换器分析

doi:10.3969/j.issn.0258-2724.2015.01.003

基金项目:

国家自然科学基金资助项目(61371033)

高等学校博士学科点专项科研基金资助项目(20130184120011)

霍英东教育基金会高等院校青年教师基金资助项目(142027)

四川省青年科技基金资助项目(2014JQ0015,2013JQ0033)

中央高校基本科研业务费专项资金资助项目(SWJTU11CX029)

详细信息

作者简介:
周国华(1983-), 男, 副教授, 硕士生导师, 研究方向为开关变换器调制与控制技术、数字控制技术、动力学建模与分析, E-mail:ghzhou-swjtu@163.com

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出版历程
- 收稿日期:2014-05-09
- 刊出日期:2015-02-25

Analysis of Digital Voltage-Mode Controlled Buck Converter with Dual-Edge Constant on-Time Modulation

摘要

摘要:为了提高恒定导通时间(constant on-time, COT)调制开关变换器的输出电压稳压精度,基于COT调制和双缘脉冲宽度调制的特点,提出了一种工作于电感电流连续导电模式(continuous conduction mode, CCM)的开关变换器双缘恒定导通时间(dual-edge constant on-time, DCOT)调制方法.介绍了DCOT调制数字电压型控制Buck变换器的工作原理,对比分析了COT调制和DCOT调制数字电压型控制Buck变换器的稳态性能和瞬态性能.结果表明:相比于COT调制,采用DCOT调制的数字电压型控制Buck变换器提高了输出电压的稳压精度,其大小为输出电压纹波峰峰值的50%,且瞬态调节时间减少了1个开关周期.最后,通过仿真和实验结果证明了理论分析的正确性.
- 恒定导通时间/
- 双缘恒定导通时间/
- 数字控制/
- Buck变换器
Abstract:To improve the accuracy of output regulation in a switching converter with constant on-time (COT) modulation, dual-edge constant-on time (DCOT) modulation scheme for the switching converter in continuous conduction mode was proposed, based on the characteristics of COT modulation and dual-edge pulse-width modulation. The principle of digital voltage-mode controlled Buck converter with DCOT modulation was introduced. Moreover, its steady-state and transient performances were analyzed and compared with those of digital voltage-mode controlled Buck converter with COT modulation. The results show that digital voltage-mode controlled Buck converter with DCOT modulation improves output-regulation accuracy by 50% of peak-to-peak value of output voltage ripple and reduces the transient regulation time by one switching cycle. Finally, the simulation and experimental results validate the correctness of the theoretical analysis.
- constant on-time/
- dual-edge constant on-time/
- digital control/
- Buck converter

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参考文献 (33)

周涛. 高频开关电源数字控制技术研究. 成都:江南娱乐网页版入口官网下载安装,2006.

周国华,许建平. 开关变换器数字控制技术

[M]. 北京:科学出版社,2011: 6-7.

王凤岩,许峻峰,许建平. 开关电源控制方法综述

[J]. 机车电传动,2006(1): 6-10. WANG Fengyan, XU Junfeng, XU Jianping. Survey on control methods of switching power supply

[J]. Electric Drive for Locomotives, 2006(1): 6-10.

陈亚爱,张卫平,周京华,等. 开关变换器控制技术综述

[J]. 电气应用,2008,27(4): 4-10.CHEN Yaai, ZHANG Weiping, ZHOU Jinghua, et al. A review of control techniques for switching converters

[J]. Electrotechnical Application, 2008, 27(4): 4-10.

周国华,许建平. 开关变换器调制与控制技术综述

[J]. 中国电机工程学报,2014,34(6): 815-831. ZHOU Guohua, XU Jianping. A review of modulation and control techniques for switching converters

[J]. Proceedings of the CSEE, 2014, 34(6): 815-831.

秦明,许建平,牟清波. 脉冲序列Buck变换器的控制规律及特性

[J]. 江南娱乐网页版入口官网下载安装学报,2009,44(5): 660-666. QIN Ming, XU Jianping, MU Qingbo. Control laws and characters of pulse train controlled Buck converters

[J]. Journal of Southwest Jiaotong University, 2009, 44(5): 660-666.

吴松荣,钟曙,许建平,等. 变脉宽脉冲序列控制DCM Buck变换器

[J]. 江南娱乐网页版入口官网下载安装学报,2014,49(3): 455-461. WU Songrong, ZHONG Shu, XU Jianping, et al. Variable width pulse train controlled DCM Buck converter

[J]. Journal of Southwest Jiaotong University, 2014, 49(3): 455-461.

PRIEWASSER R,AGOSTINELLI M, UNTERRIEDER C, et al. Modeling,control and implementation of DC-DC converters for variable frequency operation

[J]. IEEE Transactions on Power Electronics, 2014, 29(1): 287-301.

CHENG K Y, YU F, LEE F C, et al. Digital enhanced V2-type constant on-time control using inductor current ramp estimation for a Buck converter with low-ESR capacitors

[J]. IEEE Transactions on Power Electronics, 2013, 28(3): 1241-1252.

YU F, LEE F C. Design oriented model for constant on-time V2 control

[C]//Energy Conversion Congress and Exposition (ECCE). Atlanta: IEEE, 2010: 3115-3122.

金艳艳. 开关电源脉冲频率调制数字V2控制技术研究. 成都:江南娱乐网页版入口官网下载安装,2011.

ZHOU Guohua, CHEN Xing, CUI Hengfeng, et al. High output-regulation accuracy and fast transient response of dual constant on-time controlled switching converter

[J]. Electronics Letters, 2014, 50(7): 543-545.

WANG Jinping, XU Jianping, BAO Bocheng. Analysis of pulse bursting phenomenon in constant-on-time-controlled Buck converter

[J]. IEEE Transactions on Industrial Electronics, 2011, 58(12): 5406-5410.

ERICKSON R W, MAKSIMOVIC D. Fundamentals of Power Electronics

[M]. 2nd ed. Norwell: Kluwer, 2001: 15-22.

ZHOU Guohua, XU Jianping, ZHANG Fei. Unified pulse-width modulation scheme for improved digital-peak-voltage control of switching DC-DC converters

[J]. International Journal of Circuit Theory and Applications, 2014, 42(7): 671-686.

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文章访问数:1432
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