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CSEE Journal of Power and Energy Systems 2023, 9(5): 1765-1773 https://doi.org/10.17775/CSEEJPES.2020.03750
Regular Paper | Open Access | Issue | Published: 25 June 2021

Stability Analysis of DC-DC Converters with Energy Balance Control

Show Author's Information Lei Wang1,  Yang Liu1,  Yongliang Guo1,  Qing-Hua Wu1( ),  Guangfu Tang2
School of Electric Power Engineering, South China University of Technology, Guangzhou 510641, China
State Grid Smart Grid Research Institute Co., Ltd., Beijing 102209, China
Keywords:
DC-DC converter, energy balance control, average model, slow-scale stability
Cite this article:
Wang L, Liu Y, Guo Y, et al. Stability Analysis of DC-DC Converters with Energy Balance Control. CSEE Journal of Power and Energy Systems, 2023, 9(5): 1765-1773. https://doi.org/10.17775/CSEEJPES.2020.03750
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Abstract Full text About this article

With variation of parameters, DC-DC converters may change from a stable state to an unstable state, which severely degrades the performances of the converter system. In this article, by establishing the state-space average model, the stability and bifurcation of a boost and a buck-boost converter with energy balance control (EBC) is studied, respectively. Then the stability boundary and stable parameter domains are accurately predicted. The obtained stability region provides a parameter regulating range for converter design. Furthermore, compared with the one-cycle control (OCC) method, the EBC possesses an extended stable parameter domain, while avoiding unstable behaviors such as Hopf bifurcation, Quasi-periodic Oscillation even chaos, etc. The theoretic analysis is well validated through simulation and experiment.


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About this article

Stability Analysis of DC-DC Converters with Energy Balance Control

Show Author's information Lei Wang1, Yang Liu1, Yongliang Guo1, Qing-Hua Wu1( ), Guangfu Tang2
School of Electric Power Engineering, South China University of Technology, Guangzhou 510641, China
State Grid Smart Grid Research Institute Co., Ltd., Beijing 102209, China

Abstract

With variation of parameters, DC-DC converters may change from a stable state to an unstable state, which severely degrades the performances of the converter system. In this article, by establishing the state-space average model, the stability and bifurcation of a boost and a buck-boost converter with energy balance control (EBC) is studied, respectively. Then the stability boundary and stable parameter domains are accurately predicted. The obtained stability region provides a parameter regulating range for converter design. Furthermore, compared with the one-cycle control (OCC) method, the EBC possesses an extended stable parameter domain, while avoiding unstable behaviors such as Hopf bifurcation, Quasi-periodic Oscillation even chaos, etc. The theoretic analysis is well validated through simulation and experiment.

Keywords: DC-DC converter, energy balance control, average model, slow-scale stability

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Publication history

Received: 08 September 2020
Revised: 20 October 2020
Accepted: 04 December 2020
Published: 25 June 2021
Issue date: September 2023

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© 2020 CSEE.

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This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/).

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