Author, as appears in the article.: Erni IR; Vidal E; Calvente J; Guasch-Pesquer L

Department: Enginyeria Electrònica, Elèctrica i Automàtica

URV's Author/s: Calvente Calvo, Francisco Javier / GRIS JEREMIAS, FERRAN / Guasch Pesquer, Luis / Ruiz Erni, Iván / Vidal Idiarte, Enric

Keywords: Voltage control Mathematical model Inductance Harmonic analysis Gssam Frequency control Dual-active-bridge Dual active bridge Digital control Bridge circuits voltage control system modulation mathematical model input inductance harmonic analysis gssam frequency control dual active bridge digital control dc-dc converter

Abstract: Dual active bridge (DAB) converters have experienced a boom thanks to the demands of new applications where bidirectional energy transfer, galvanic isolation and high efficiency are essential. In order to improve the efficiency of the stage without losing sight of the converter advantages, previous works have proposed complex forms of control that are not always applicable. This paper proposes the use of a variable frequency control strategy plus an additional control loop to find the point of maximum efficiency. Therefore, in this paper, the generalized state space average model is developed in depth to obtain in an analytical way a new small-signal model between the switching frequency and the output voltage, which is used to design the digital variable frequency control. In addition, to increase efficiency, reduce losses and ensure zero voltage switching, a second loop based on perturb and observe methodology is presented. The results obtained in the analysis of this control are validated and contrasted by simulation and experimentally with a 1kW prototype.

Thematic Areas: Telecommunications Materials science (miscellaneous) Materials science (all) General materials science General engineering General computer science Engineering, electrical & electronic Engineering (miscellaneous) Engineering (all) Engenharias iv Engenharias iii Electrical and electronic engineering Computer science, information systems Computer science (miscellaneous) Computer science (all) Ciência da computação

licence for use: https://creativecommons.org/licenses/by/3.0/es/

Author's mail: luis.guasch@urv.cat enric.vidal@urv.cat javier.calvente@urv.cat ivan.ruize@estudiants.urv.cat

Author identifier: 0000-0002-0037-7698 0000-0002-6016-4096 0000-0001-8012-1889 0000-0003-2113-5660

Record's date: 2023-02-23

Papper version: info:eu-repo/semantics/publishedVersion

Link to the original source: https://ieeexplore.ieee.org/document/9443176

Licence document URL: http://repositori.urv.cat/ca/proteccio-de-dades/

Papper original source: Ieee Access. 9 85289-85299

APA: Erni IR; Vidal E; Calvente J; Guasch-Pesquer L (2021). Small signal modelling for variable frequency control with maximum efficiency point tracking of DAB converter. Ieee Access, 9(), 85289-85299. DOI: 10.1109/ACCESS.2021.3084630

Article's DOI: 10.1109/ACCESS.2021.3084630

Entity: Universitat Rovira i Virgili

Journal publication year: 2021

Publication Type: Journal Publications