Maximum efficiency point tracking algorithm for dual active bridge converters

Väisänen, Vesa; Hiltunen, Jani

doi:10.1109/ecce.2015.7309747

Cited by 3 publications

(1 citation statement)

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“…There is a substantial amount of academic research on modifying circuit topology or control of the LLC resonant converters by adding auxiliary components to increase the converter efficiency [14,15]. As an example, the high efficiency operation of the LLC resonant converter can be satisfied by tracking the converter efficiency with the help of the perturb and observe method [16,17].…”

Section: Introductionmentioning

confidence: 99%

Smart Efficiency Tracking for Novel Switch—LLC Converter for Battery Charging Applications

Çalışkan

Üstün

2022

Energies

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In this study, a novel smart efficiency tracking (SET) algorithm for GaN-based LLC resonant converter for quick battery charging of light electric vehicles is proposed. Conventional frequency modulation (FM) method, single pulse width modulation method (S-PWM) and discontinuous operation mode method (DOM) are used to track the converter efficiency which varies for different loading conditions during the battery charging process. First, the charging modes are explained to define the efficiency variation clearly. Then, the theoretical background of GaN-based LLC resonant converter is presented and the details of design study are given. Third, the principles of three different switching control strategies, the modeling study and the simulation results are put forward. Finally, the details of the implementation of three different switching strategies are presented for the validation of the study. Furthermore, the implementation of the design and its impact on battery charging are discussed. The proposed efficiency tracking method is validated with a 20% efficiency increase for the low loading conditions of GaN-based LLC converter.

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