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Analysis and Design of Self-Oscillating Resonant Converters with Loss-Free Resistor Characteristics

Author

Listed:
  • Ricardo Bonache-Samaniego

    (Department of Electrical, Electronic, and Automatic Control Engineering (DEEEA), Universitat Rovira i Virgili, 43007 Tarragona, Spain)

  • Carlos Olalla

    (Department of Electrical, Electronic, and Automatic Control Engineering (DEEEA), Universitat Rovira i Virgili, 43007 Tarragona, Spain)

  • Hugo Valderrama-Blavi

    (Department of Electrical, Electronic, and Automatic Control Engineering (DEEEA), Universitat Rovira i Virgili, 43007 Tarragona, Spain)

  • Luis Martínez-Salamero

    (Department of Electrical, Electronic, and Automatic Control Engineering (DEEEA), Universitat Rovira i Virgili, 43007 Tarragona, Spain)

Abstract

A general approach for the analysis and design of self-oscillating resonant converters is presented in this paper, for a particular class of circuits in which the change of input voltage polarity is caused by the zero-crossings of the input inductor current. The key features of the method are an analytical description in the time-domain of a spiral that eventually converges into an ellipse, and a frequency–domain analysis that explains the behavior of the ellipse as a limit cycle. On a theoretical basis, this class of circuits behaves as loss-free resistors (LFR) because in steady-state the input inductor current is in phase with the first harmonic of the input voltage. The proposed analytical procedure predicts accurately the amplitude and frequency of the limit cycle and justifies the stability of its generation. This accuracy is reflected in the close agreement between the theoretical expressions and the corresponding simulated and measured waveforms. Third and fourth order resonant converters are designed following simple guidelines derived from the theoretical analysis.

Suggested Citation

  • Ricardo Bonache-Samaniego & Carlos Olalla & Hugo Valderrama-Blavi & Luis Martínez-Salamero, 2020. "Analysis and Design of Self-Oscillating Resonant Converters with Loss-Free Resistor Characteristics," Energies, MDPI, vol. 13(14), pages 1-24, July.
  • Handle: RePEc:gam:jeners:v:13:y:2020:i:14:p:3743-:d:387227
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    Cited by:

    1. Aaron Shmaryahu & Nissim Amar & Alexander Ivanov & Ilan Aharon, 2021. "Sizing Procedure for System Hybridization Based on Experimental Source Modeling for Electric Vehicles," Energies, MDPI, vol. 14(17), pages 1-21, August.

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