1. Two-Phase, Dual Interleaved Buck–Boost DC–DC Converter for Automotive Applications.
- Author
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Granados-Luna, Teresa-Raquel, Araujo-Vargas, Ismael, Forsyth, Andrew J., Cano-Pulido, Kevin, Velazquez-Elizondo, Pedro-Enrique, Cervantes, Ilse, Gomez-Olguin, Francisco, and Villarruel-Parra, Alejandro
- Subjects
POWER density ,DC-to-DC converters ,AC DC transformers ,SECOND harmonic generation ,SWITCHING circuits ,MAGNETIC materials ,AMORPHOUS substances - Abstract
A two-phase buck–boost converter utilizing dual interleaving is presented in this article. The dual interleaving consists of an interphase transformer (IPT) that doubles the ripple frequency together with two conventional buck–boost switching arms, mitigating the inductor ripple current and aiding to increase the power density of the converter. A description of the design and selection of the power devices is presented for a 32-kW, 75-kHz dual interleaved SiC prototype with an IPT, such that a power density of 7.4 kW/kg is achieved. The operation of the circuit is verified experimentally using a prototype with 315–385 V supply range and 350-V output voltage, achieving 97.1% peak efficiency at 32 kW. The experiments reveal that the interleaved coupled currents are equalized without an active balancer. [ABSTRACT FROM AUTHOR]
- Published
- 2020
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