电工技术学报  2017, Vol. 32 Issue (4): 58-65    DOI:
电力电子 |
恒定导通时间控制Buck变换器的间隔周期斜率补偿方案
徐杨, 钱挺
同济大学电气工程系 上海 201804
Every Other Cycle Ramp Compensation for Buck Converters with Constant On-Time Control
Xu Yang, Qian Ting
Department of Electrical Engineering Tongji University Shanghai 201804 China
全文: PDF (519 KB)  
输出: BibTeX | EndNote (RIS)      
摘要 提出一种改进的斜率补偿方式,用以改善恒定导通时间控制模式Buck变换器的稳定性。与传统方法相比,所提方法以数字化控制的方式间隔周期提供斜率补偿信号,能更加有效地消除次谐波振荡。此外,该方法可根据相邻周期关断时间的偏差来自适应地调节补偿信号的斜率。这使得系统在稳态时仅需少量的斜率补偿,有效地降低了补偿信号对恒定导通时间控制快速响应能力的影响。通过理论量化分析和实验对比验证了所提方法的可行性。
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
徐杨
钱挺
关键词 恒定导通时间控制 数字化控制 Buck变换器 次谐波振荡 斜率自适应补偿    
Abstract:A novel adaptive ramp compensation scheme is proposed to improve stability for Buck converters with ripple-based constant on-time control. Compared with traditional compensation approaches, the new method eliminates sub-harmonic oscillation more effectively by using digital control approach to generate "every other cycle" ramp compensation signal. Furthermore, the slope of ramp compensation is adaptively adjusted according to the off-time difference between two consecutive cycles. These features minimize the required ramp amplitude at steady state and effectively avoid over-compensation, and thus, reduce the impact on transient response performance of constant on-time control. Theoretical analysis and experimental results are provided to verify the proposed scheme.
Key wordsConstant on-time control    digital control    Buck converters    sub-harmonic oscillation    adaptive ramp compensation   
收稿日期: 2016-05-16      出版日期: 2017-03-01
PACS: TM46  
通讯作者: 钱 挺 男,1977年生,教授,博士生导师,研究方向为电力电子及其相关控制方法的新技术。E-mail: tqian@tongji.edu.cn   
作者简介: 徐 杨 男,1992年生,硕士研究生,研究方向为功率变换器拓扑和控制策略、电力电子领域数字化控制技术等。E-mail: 2014xuyang@tongji.edu.cn
引用本文:   
徐杨, 钱挺. 恒定导通时间控制Buck变换器的间隔周期斜率补偿方案[J]. 电工技术学报, 2017, 32(4): 58-65. Xu Yang, Qian Ting. Every Other Cycle Ramp Compensation for Buck Converters with Constant On-Time Control. Transactions of China Electrotechnical Society, 2017, 32(4): 58-65.
链接本文:  
https://dgjsxb.ces-transaction.com/CN/Y2017/V32/I4/58