脉冲跨周期调制连续导电模式Buck变换器低频波动现象研究

钟曙; 沙金; 许建平; 许丽君; 周国华

doi:10.7498/aps.63.198401

摘要

揭示了脉冲跨周期调制（pulse skipped modulation，PSM）电感电流连续导电模式（continuous conduction mode，CCM）Buck变换器中存在的低频波动现象，分析了PSM调制CCM Buck变换器的能量转换过程，阐述了低频波动的产生机理，给出了低频波动的判断条件. 建立了PSM调制CCM Buck变换器的同步开关映射模型，基于该模型给出了电感电流与输出电压随输出电容等效串联电阻（equivalent series resistance，ESR）变化的分岔图，分析了ESR 对低频波动的影响. 为消除PSM调制CCM Buck中存在的低频波动，提出了电容电流脉冲跨周期调制（capacitor current pulse skipped modulation，CC-PSM ）方法. 研究结果表明：在ESR较小时，CC-PSM调制CCM Buck变换器消除了PSM调制CCM Buck变换器存在的低频波动. 仿真与实验结果验证了理论分析的正确性.

关键词:

Abstract

Low-frequency oscillation phenomenon in pulse skipped modulation (PSM) buck converter operating in continuous conduction mode (CCM) is reported in this paper. Energy transfer difference between the PSM-controlled buck converter operating in discontinuous conduction mode (DCM) and that in CCM is studied. The mechanism of low-frequency phenomenon in PSM-controlled CCM buck converter is revealed, and a discrete-time model of PSM-controlled buck converter operating in CCM is established. Based on this model, the border collision bifurcation with variations of the ESR is studied; meanwhile, the inhibition effect of output capacitor equivalent series resistance (ESR) on low-frequency oscillation is presented. Based on the above analysis, a capacitor current pulse skipped modulation (CC-PSM) technology is proposed; the energy transfer principle of CC-PSM controlled buck converter is analyzed. The control pulse of CC-PSM is generated by the comparison between the sampled capacitor current and preset peak reference current, and thus the range of inductor current ripple is limited. Results show that CC-PSM effectively eliminates the low-frequency oscillation in CCM buck converter under classical PSM when the ESR is low. Finally, the experimental results validate the correctness of theory and simulation analysis

Keywords:

作者及机构信息

1.
磁浮技术与磁浮列车教育部重点实验室, 西南交通大学电气工程学院, 成都 610031

基金项目: 国家自然科学基金（批准号：51177140，61371033）、四川省青年科技基金（2013JQ0033）和中央高校基本科研业务费专项资金（批准号：2682013ZT20）资助的课题.

Authors and contacts

1.
Key Laboratory of Magnetic Suspension Technology and Maglev Vehicle Ministry of Education, School of Electrical Engineering, Southwest Jiaotong University, Chengdu 610031, China

Funds: Project supported by the National Natural Science Foundation of China (Grant Nos. 51177140, 61371033), the Sichuan Provincial Youth Science and Technology Fund, China(Grant No. 2013JQ0033), and the Fundamental Research Funds for the Central Universities, China(Grant 2682013ZT20).

参考文献

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[16]	Kapat S, Patra A, Banerjee S 2011 IEEE Trans. on Circuits and Systems 58 1958
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[19]	Niu Q M, Zhang B, Luo P, Li Z J 2006 Proceeding of the CSEE 26 62(in Chinese) [牛全民, 张波, 罗萍, 李肇基 2006 中国电机工程学报 26 62]
[20]	Niu Q M, Zhang B, Li Z J 2008 Proceeding of the CSEE 28 32(in Chinese) [牛全民, 张波, 李肇基 2008 中国电机工程学报 28 32]
[21]	Kapat S, Banerjee S, Patra A 2010 IEEE Trans. on Industrial Electronics 57 1793
[22]	Zhou G H, Xu J P, Bao B C, Wang J P, Jin Y Y 2013 Acta Phys. Sin. 62 010503(in Chinese) [周国华, 许建平, 包伯成, 王金平, 金艳艳 2013 62 010503]
[23]	Ma Z H, Xia J F, Bao B C, Wang G Y 2013 Power Electronics 47 86(in Chinese) [马正华, 夏建锋, 包伯成, 王国云 2013 电力电子技术 47 86]
[24]	Banerjee S, Ranjan P, Grebogi C 2000 IEEE Trans. on Circuits Syst. I 47 633
[25]	Sha J, Bao B C, Xu J P, Gao Y 2012 Acta Phys. Sin. 61 120501(in Chinese) [沙金, 包伯成, 许建平, 高玉 2012 61 120501]

施引文献

[1]	Wang F Q, Zhang H, Ma X K 2012 Chin. Phys. B 21 020505
[2]	Zhou Y F, Chen J N, Iu H H C, Tse C K 2008 Int. J. Bifurc. Chaos 18 121
[3]	Yang N N, Liu C X, Wu C J 2012 Chin. Phys. B 21 080503
[4]	Liu F 2008 Chin. Phys. B 17 2394
[5]	Xie F, Yang R, Zhang B 2011 IEEE Trans. Circuits Syst. I 58 2269
[6]	Kavitha A, Uma G 2008 IEEE Trans. Power Electronics. 23 2878
[7]	Zhou G H, Bao B C, Xu J P, Jin Y Y 2010 Chin. Phys. B 19 050509
[8]	Wang F Q, Zhang H, Ma X K 2008 Acta Phys. Sin. 57 2842(in Chinese) [王发强, 张浩, 马西奎 2008 57 2842]
[9]	Wang F Q, Zhang H, Ma X K 2008 Acta Phys. Sin. 57 1522(in Chinese) [王发强, 张浩, 马西奎 2008 57 1522]
[10]	Wang J P, Xu J P, Bao B C 2011 IEEE Trans. Industrial Electronics. 58 5406
[11]	Zhang X, Bao B C, Wang J P, Ma Z H, Xu J P 2012 Acta Phys. Sin. 61 160503(in Chinese) [张希, 包伯成, 王金平, 马正华, 许建平 2012 61 160503]
[12]	Wang J P, Xu J P, Zhou G H, Mi C B, Qin M 2011 Acta Phys. Sin. 60 048402(in Chinese) [王金平, 许建平, 周国华, 米长宝, 秦明 2011 60 048402]
[13]	Milan P S, Marcallo con Casone M R B, Cigliano L R 1998 United States Patent 5745352
[14]	Luo P, Luo L Y, Li Z J, Chen G 2002 IEEE 2002 International Conference on Communications, Circuits and Systems and West Sino Expositions 2 1716
[15]	Ma Z H, Xia J F, Bao B C, Sha J 2013 Proceeding of the CSEE 33 24(in Chinese) [马正华, 夏建锋, 包伯成, 沙金 2013 中国电机工程学报 33 24]
[16]	Kapat S, Patra A, Banerjee S 2011 IEEE Trans. on Circuits and Systems 58 1958
[17]	Luo P, Xiong F G, Li Z J 2004 Chinese Journal of Electronics 32 1829(in Chinese) [罗萍, 熊富贵, 李肇基 2004 电子学报 32 1829]
[18]	Luo P, Li Z J, Xiong F G 2004 Journal of Electronics & Information Technology 26 984(in Chinese) [罗萍, 李肇基, 熊富贵 2004 电子与信息学报 26 984]
[19]	Niu Q M, Zhang B, Luo P, Li Z J 2006 Proceeding of the CSEE 26 62(in Chinese) [牛全民, 张波, 罗萍, 李肇基 2006 中国电机工程学报 26 62]
[20]	Niu Q M, Zhang B, Li Z J 2008 Proceeding of the CSEE 28 32(in Chinese) [牛全民, 张波, 李肇基 2008 中国电机工程学报 28 32]
[21]	Kapat S, Banerjee S, Patra A 2010 IEEE Trans. on Industrial Electronics 57 1793
[22]	Zhou G H, Xu J P, Bao B C, Wang J P, Jin Y Y 2013 Acta Phys. Sin. 62 010503(in Chinese) [周国华, 许建平, 包伯成, 王金平, 金艳艳 2013 62 010503]
[23]	Ma Z H, Xia J F, Bao B C, Wang G Y 2013 Power Electronics 47 86(in Chinese) [马正华, 夏建锋, 包伯成, 王国云 2013 电力电子技术 47 86]
[24]	Banerjee S, Ranjan P, Grebogi C 2000 IEEE Trans. on Circuits Syst. I 47 633
[25]	Sha J, Bao B C, Xu J P, Gao Y 2012 Acta Phys. Sin. 61 120501(in Chinese) [沙金, 包伯成, 许建平, 高玉 2012 61 120501]

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