An Efficiency-Optimized Modulation Strategy for Dual-Active-Bridge DC-DC Converters Using Dual-Pulse-Width-Modulation in the Low Power Region

Byeng-Joo Byen; Chung-Hwan Ban; Young-Bae Lim; Gyu-Ha Choe

An Efficiency-Optimized Modulation Strategy for Dual-Active-Bridge DC-DC Converters Using Dual-Pulse-Width-Modulation in the Low Power Region

Vol. 17, No. 6, pp. 1413-1421, Nov. 2017

10.6113/JPE.2019.17.6.1413

Bidirectional converter

DC-DC converter

Dual-PWM

Modulation scheme

PDF

Abstract

In order to control the output voltage in a dual active bridge converter, this paper establishes a theoretical inductor current equation for a dual-pulse-width-modulation scheme that ensures low switching loss. It also proposes a modulation strategy that minimizes conduction loss. When compared to the conventional single-pulse-width-modulation strategy, the proposed approach can reduce the inductor current RMS and improve efficiency in the low power region, as verified through simulation and experimental results.

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Cite this article

[IEEE Style]

B. Byen, C. Ban, Y. Lim, G. Choe, "An Efficiency-Optimized Modulation Strategy for Dual-Active-Bridge DC-DC Converters Using Dual-Pulse-Width-Modulation in the Low Power Region," Journal of Power Electronics, vol. 17, no. 6, pp. 1413-1421, 2017. DOI: 10.6113/JPE.2019.17.6.1413.

[ACM Style]

Byeng-Joo Byen, Chung-Hwan Ban, Young-Bae Lim, and Gyu-Ha Choe. 2017. An Efficiency-Optimized Modulation Strategy for Dual-Active-Bridge DC-DC Converters Using Dual-Pulse-Width-Modulation in the Low Power Region. Journal of Power Electronics, 17, 6, (2017), 1413-1421. DOI: 10.6113/JPE.2019.17.6.1413.