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Design and Validation of a Control Algorithm for a SAE J2954-Compliant Wireless Charger to Guarantee the Operational Electrical Constraints

José Manuel González-González (), Alicia Triviño-Cabrera () and José Antonio Aguado ()
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José Manuel González-González: Department of Electrical Engineering, Universidad de Málaga, 29016 Málaga, Spain
Alicia Triviño-Cabrera: Department of Electrical Engineering, Universidad de Málaga, 29016 Málaga, Spain
José Antonio Aguado: Department of Electrical Engineering, Universidad de Málaga, 29016 Málaga, Spain

Energies, 2018, vol. 11, issue 3, 1-17

Abstract: Wireless power transfer is foreseen as a suitable technology to provide charge without cables to electric vehicles. This technology is mainly supported by two coupled coils, whose mutual inductance is sensitive to their relative positions. Variations on this coefficient greatly impact the electrical magnitudes of the wireless charger. The aim of this paper is the design and validation of a control algorithm for an Society of Automotive Engineers (SAE) J2954-compliant wireless charger to guarantee some operational and electrical constraints. These constraints are designed to prevent some components from being damaged by excessive voltage or current. This paper also presents the details for the design and implementation of the bidirectional charger topology in which the proposed controller is incorporated. The controller is installed on the primary and on the secondary side, given that wireless communication is necessary with the other side. The input data of the controller helps it decide about the phase shift required to apply in the DC/AC converter. The experimental results demonstrate how the system regulates the output voltage of the DC/AC converter so that some electrical magnitudes do not exceed predefined thresholds. The regulation, which has been tested when coil misalignments occur, is proven to be effective.

Keywords: inductive power transfer (IPT); wireless charger; control; electric vehicle; protection (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2018
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