峰值电流控制DC-DC Boost变换器优化斜坡补偿
Optimal Slope Compensation for Peak-current Controlled DC-DC Boost Converter
中文关键词: DC-DC Boost变换器 次谐波振荡 斜坡补偿 峰值电流控制
作者 单位 E-mail
程为彬 西安石油大学电子工程学院，西安 710065
李璐 西安石油大学电子工程学院，西安 710065 784471374@qq.com
郭颖娜 西安石油大学电子工程学院，西安 710065
宋久旭 西安石油大学电子工程学院，西安 710065
中文摘要:
非线性现象在DC-DC开关变换器中普遍存在，具体表现为次谐波振荡和混沌等不稳定现象。针对此，研究了峰值电流控制下的DC-DC Boost变换器，通过采取固定斜坡补偿可消除其电路中的非线性现象，但降低了参考电流和输入功率。为解决上述问题，提出了一种优化的斜坡补偿方案来解决固定斜坡补偿带来的参考电流和输入功率降低的问题，同时推导出其参考电流和电感电流平均值的表达式，通过仿真和实验验证了理论分析的正确性及所提优化补偿策略的有效性。
内容节选：By adopting nonlinear switches and multipliers in DC-DC boost converters, a prominent nonlinear behaviors within the system is observed. Due to st-rong nonlinearity of switching DC-DC converters, they can exhibit complex dynamical behaviors, such as sub-harmonics oscillation, chaos and et al[4]. Any sub-harmonics as well as chaotic behaviors that appears in DC-DC converters are deemed as being undesir-able and should be removed. There have been many reported studies to overcome the instabilities associ-
ated with the DC-DC Boost converters[5], such as app-lying various control methods. The peak-current-mode controlled method is one of the most popular control methods used for achieving good dynamic response and over-current protection in switching converter.However, other studies shows that the DC-DC boost converter under peak-current-mode（PCM） with the du-ty D>0.5 exhibits unstable characteristics of the open-loop[9]. Therefore, a slope compensation scheme is nec-essary to alleviate those instabilities, as this is re-garded as one of the most effective methods. Con-versely, due to its open-loop control characteristic, the slope compensation method could reduce the peak value of the inductor current at the switching moments in the PCM boost converter. Therefore, by introduc-ing an appropriate slope compensation current or volt-age in the switching feedback circuit, it can effectively broaden the stabilizing range of the system and elimi-nate sub-harmonics oscillation as well as chaos.Moreover it can also achieve steady state in the con-verter circuit.
This paper is organized as follows, a schematic circuit diagram is shown in Section Ⅱ for DC-DC boost converters under PCM, and the stability condi-tion is subsequently discussed. Furthermore, the an-alysis of constant slope compensation is investigated in Section Ⅲ followed by optimization of slope com-pensation strategy presented in Section Ⅳ with a proposed optimized scheme put forward, in which it demonstrated a good degree of stability. In Section Ⅳ, a series of contrast experiments is tested to verify
the simulation results. Finally, the paper presents a conclusion in Section Ⅴ.
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参考文献(共16条):
[1] Deane J H B. Chaos in a current-mode controlled boost DC-DC converter[J]. IEEE Transactions on Circuits and Syste-ms I:Fundamental Theory and Applications, 1992, 39(8):680-683.
[2] Tse C K. Flip bifurcation and chaos in three-state boost switching regulators[J]. IEEE Transactions on Circuits and Systems I:Fundamental Theory and Applications, 1994, 41(1):16-23.
[3] 黄贺, 付金波, 孟涛, 等. 具有PFC功能的90 W开关电源的设计与实验研究[J]. 电源学报, 2012, 10(5):5-9. Huang He, Fu Jinbo, Meng Tao, et al. Design and experiment of 90 W switching power supply with PFC function[J]. Journal of Power Supply, 2012, 10(5):5-9(in Chine-se).
[4] Aroudi A E, Calvente J, Giral R., et al. Effects of non-ideal current sensing on subharmonic oscillation boundary in DC-DC switching converters under CMC[C]//IECON 2013-39th Annual Conference of the IEEE Industrial Electronics Society. Vienna, Austria, 2013:8367-8372.
[5] Yang Yidi, Lu Weiguo, Lu H H C, et al. Stabilization of fast-scale instabilities in PCM boost PFC converter with dynamic slope compensation[C]//2015 IEEE International Symposium on Circuits and Systems. Lisbon, Portugal, 2015:2481-2484.
[6] Taeed F, Nymand M. A new simple and high performance digital peak current mode controller for DC-DC converters[C]//2014 IEEE Applied Power Electronics Conference and Exposition-APEC 2014. Fort Worth, TX, USA, 2014:1213-1218.
[7] Song B M, Abedi M R. Dynamic modeling and performance of a current-mode controlled boost DC-DC Converter with slope compensation[C]//2012 IEEE Transportation Electri-fication Conference and Expo, ITEC. Dearborn, MI, USA, 2012:1-5.
[8] Prakash K S, Barai M. Time-variant slope compensation for peak current mode control (PCMC) of boost converter with point-of-load applications[C]//2016 IEEE 6th International Conference on Power Systems, ICPS. New Delhi, India, 2016:1-6.
[9] 胡水根, 邹雪城, 张兢, 等. 一种用于Boost DC-DC转换器的新型动态斜坡补偿电路[J]. 计算机与数字工程, 2007, 35(10):159-162. Hu Shuigen, Zou Xuecheng, Zhang Jing, et al. A new dynamic slope compensation circuit to boost DC-DC converter[J]. Computer and Digital Engineering, 2007, 335(10):159-162.
[10] Zamani N, Niroomand M, Ataei M. Modeling and chaos control of current mode controlled switching converter with ramp compensation[C]//The 5th Annual International Pow-er Electronics, Drive Systems and Technologies Conference(PEDSTC 2014). Tehran, Iran, 2014:360-365.
[11] Zamani N, Niroomand M, Ataei M. Bifurcation and chaos control in power-factor-correction boost converter[C]//2014 22nd Iranian Conference on Electrical Engineering, ICEE. Tehran, Iran, 2014:1307-1312.
[12] Lu Weiguo, Lang Shuang, Zhou Luowei, et al. Improvement of stability and power factor in PCM controlled boost PFC converter with hybrid dynamic compensation[J]. IEEE Transactions on Circuits and Systems I:Regular Papers, 2015, 62(1):320-328.
[13] Ling Chaodong, Wen Changqing, Huang Weiwei, et al. Design of a novel nonlinear slope compensation circuit for peak current-mode boost DC-DC converter[C]//2010 Inter-national Conference on Anti-Counterfeiting, Security and Identification. Chengdu, China, 2010:63-66.
[14] Cheng Weibin, Song Jiuxu, Li Hong, et al. Time-varying compensation for peak current control PFC Boost converter[J]. IEEE Transactions on Power Electronics, 2015, 30(6):3431-3437.
[15] Bao Bocheng, Xu Jianping, Liu Zhong. Bifurcation of Boost converter with two boundaries and its stability control by ramp compensation[J]. Acta Physica Sinica, 2010, 58(5):2949-2956.
[16] Bao Bocheng, Xu Jianping, Liu Zhong. Study on stability control of ramp compensation for switched DC-DC converter[J]. Journal of the University of Electronic Science and Technology of China, 2008, 37(3):397-400.
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