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Computationally efficient models for simulation of non-ideal DC–DC converters operating in continuous and discontinuous conduction modes

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Abstract

This paper discusses dynamic modeling of non-isolated DC–DC converters (buck, boost and buck–boost) under continuous and discontinuous modes of operation. Three types of models are presented for each converter, namely, switching model, average model and harmonic model. These models include significant non-idealities of the converters. The switching model gives the instantaneous currents and voltages of the converter. The average model provides the ripple-free currents and voltages, averaged over a switching cycle. The harmonic model gives the peak to peak values of ripple in currents and voltages. The validity of all these models is established by comparing the simulation results with the experimental results from laboratory prototypes, at different steady state and transient conditions. Simulation based on a combination of average and harmonic models is shown to provide all relevant information as obtained from the switching model, while consuming less computation time than the latter.

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Acknowledgement

This work was supported by the Department of Heavy Industry, Government of India, under the project entitled “Development of offline and real time simulators for electric vehicle/hybrid electric vehicle systems”.

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  1. Department of Electrical Engineering, Indian Institute of Science Bangalore, Bangalore, 560012, India

    CHALLA MOHANA KRISHNA, SARITHA B & NARAYANAN G

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  1. CHALLA MOHANA KRISHNA
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  2. SARITHA B
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  3. NARAYANAN G
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Correspondence to CHALLA MOHANA KRISHNA.

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KRISHNA, C.M., B, S. & G, N. Computationally efficient models for simulation of non-ideal DC–DC converters operating in continuous and discontinuous conduction modes. Sadhana 40, 2045–2072 (2015). https://doi.org/10.1007/s12046-015-0436-9

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  • DOI: https://doi.org/10.1007/s12046-015-0436-9

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