电工技术学报  2018, Vol. 33 Issue (4): 856-864    DOI: 10.19595/j.cnki.1000-6753.tces.161008
电力电子与电力传动 |
具有快速负载瞬态响应的开关变换器数字均值电压控制方法
章伟, 周国华, 刘啸天, 徐顺刚
西南交通大学电气工程学院 成都 610031;
Digital Average Voltage Control Technique for Switching Converter with Fast Load Transient Response
Zhang Wei, Zhou Guohua, Liu Xiaotian, Xu Shungang
School of Electrical Engineering Southwest Jiaotong University Chengdu 610031 China;
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摘要 提出一种具有快速负载瞬态响应的开关变换器数字均值电压(DAV)控制方法。以Buck变换器为例,介绍DAV控制开关变换器的工作原理,建立变换器的z域模型,由此分析变换器的稳定性。对比分析DAV控制和数字V2控制Buck变换器的稳定性与负载瞬态性能。研究结果表明:相比于数字V2控制,DAV控制Buck变换器具有更好的稳定性,在全占空比范围内都能够稳定工作;DAV控制Buck变换器的负载瞬态响应比数字V2控制更快。最后,通过仿真和实验验证了理论分析的正确性。
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章伟
周国华
刘啸天
徐顺刚
关键词 均值电压控制数字控制负载瞬态响应z域建模    
Abstract:A novel digital average voltage (DAV) control technique for switching converter with fast load transient response is proposed. Taken Buck converter as an example, the principle of DAV controlled switching converter is introduced, and its z-domain model is established to investigate system stability. Moreover, its stability and load transient performance are analyzed, and the comparisons with digital V2 controlled buck converter are carried out. The results show that DAV controlled buck converter has better stability, which can work stably in the whole range of duty ratio. Moreover, the load transient performance of DAV control is better than that of digital V2 control. Finally, the correctness of the theoretical analysis is proved by simulation and experimental results.
Key wordsAverage voltage control    digital control    load transient response    z-domain modeling   
收稿日期: 2016-07-06      出版日期: 2018-03-05
PACS: TM46  
基金资助:国家自然科学基金(61371033),全国优秀博士学位论文作者专项资金(201442)和四川省杰出青年基金(2014JQ0015)资助项目
作者简介: 章伟 男,1992年生,硕士研究生,研究方向为开关电源数字控制技术。E-mail: zhangwei_pece@163.com;周国华 男,1983年生,教授,博士生导师,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(通信作者);
引用本文:   
章伟, 周国华, 刘啸天, 徐顺刚. 具有快速负载瞬态响应的开关变换器数字均值电压控制方法[J]. 电工技术学报, 2018, 33(4): 856-864. Zhang Wei, Zhou Guohua, Liu Xiaotian, Xu Shungang. Digital Average Voltage Control Technique for Switching Converter with Fast Load Transient Response. Transactions of China Electrotechnical Society, 2018, 33(4): 856-864.
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