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Modeling and Estimation of DC-DC Buck Converter Dynamics Using Relay Feedback Output With Performance Evaluation
, S. Majhi, A.K. Gogoi
Published in Institute of Electrical and Electronics Engineers Inc.
Volume: 66
Issue: 3
Pages: 427 - 431
In this brief, the dynamics of a DC-DC buck converter is modeled using the limit cycle oscillations (LCO) induced by relay feedback test. The mathematical modeling of the converter is done based on sustained oscillatory output conditions and measurements made on LCO. The method is capable of identifying the model in presence of parameter variations. With the precise information of losses of the components available in the LCO, it is possible to get an accurate dynamic model of the converter. The identified dynamic model is validated with the step response. Also, the performance of the model is tested under different parameter perturbations. The proposed method is verified by simulation and experimental results. © 2004-2012 IEEE.
About the journal
JournalData powered by TypesetIEEE Transactions on Circuits and Systems II: Express Briefs
PublisherData powered by TypesetInstitute of Electrical and Electronics Engineers Inc.