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Volume 28 Issue 2
Apr.  2015
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Article Contents
Journal of Southwest Jiaotong University  > 2015  >  28(2): 218-225.
HE Shengzhong, ZHOU Guohua, XU Jianping, WU Songrong, XU Yinglei, CHEN Li. Frequency-Domain and Time-Domain Characteristics of Valley V2 Controlled Boost Converter[J]. Journal of Southwest Jiaotong University, 2015, 28(2): 218-225. doi: 10.3969/j.issn.0258-2724.2015.02.003
Citation: HE Shengzhong, ZHOU Guohua, XU Jianping, WU Songrong, XU Yinglei, CHEN Li. Frequency-Domain and Time-Domain Characteristics of Valley V2 Controlled Boost Converter[J]. Journal of Southwest Jiaotong University, 2015, 28(2): 218-225. doi: 10.3969/j.issn.0258-2724.2015.02.003
shu

Frequency-Domain and Time-Domain Characteristics of Valley V2 Controlled Boost Converter

doi: 10.3969/j.issn.0258-2724.2015.02.003
  • Received Date: 22 Jan 2014
  • Publish Date: 25 Apr 2015
    Abstract
  • Based on the analysis of the output voltage ripple characteristics of boost converter, the V2 control technique was applied to Boost converter. The principle of operation of valley V2 controlled Boost converter was analyzed in detail and a small-signal model was established. Based on this model, the control-to-output, input-to-output, and output impedance transfer functions were deduced. The characteristics of valley V2 controlled Boost converter in time-domain and frequency-domain was analyzed, and it was also compared with valley current mode (VCM) controlled Boost converter. The results show that valley V2 controlled Boost converter has faster input and load transient response speed than VCM controlled Boost converter. The time domain simulation results show that, compared with the valley current control, when the input voltage increases and decreases, transient response time of valley V2 control is reduced by about 530 s and 800 s respectively, and when the load increases and decreases, it is reduced about 650 s and 1 330 s respectively. Experimental results are in agreement with simulation ones, demonstrating that the theoretical analysis is correct.

     

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