Research of Modeling and Control of Non-Ideal Buck Converter

doi:10.16628/j.cnki.2095-8188.2020.07.004

Abstract

Abstract:

Buck converter is a basic DC-DC converter.Considering parasitic parameters,the working principle of non-ideal Buck converter was analyzed.The dynamic mathematical model from control to output under non-ideal model was established by using state space average method.To eliminate zero point from control to output mathematical model,the corresponding inertial integral compensation network was designed in control circuit.The performance of whole closed-loop control system was analyzed.Through the simulation analysis and prototype test,the designed inertia integral compensation network was verified with strong anti-interference ability and good dynamic performance in the whole Buck converter.The mathematical model based on non-ideal Buck converter provides theoretical basis for analysis of other circuits,with certain practical value.

Key words: Buck converter, non-ideal model, state space average method, compensation

CLC Number:

TM911

ZHANG Weilin, LIU Dongli, ZHANG Yaochang. Research of Modeling and Control of Non-Ideal Buck Converter[J]. LOW VOLTAGE APPARATUS, 2020, 592(7): 25-28.

Figures/Tables 6

References 11

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