Pedro Pascoal

Abstract
In recent years, technologies related to the electrification of transportation have attracted significant attention. Among these, wireless charging stands out, even facing numerous challenges concerning design and parameter optimization. Consequently, this article introduces a novel design methodology to improve the performance of inductive power transfer (IPT) systems for wireless charging applications in electric vehicles. The methodology considers operational limits of switches and passive components. By using a combination of Newton-Raphson and Particle Swarm Optimization (PSO) algorithms, the proposed approach efficiently determines both electrical and physical parameters of converters and coils to achieve maximum efficiency at a chosen operational point. Furthermore, a Maximum Efficiency Point Tracking (MEPT) algorithm is employed for optimal system operation. The proposed methodology is validated through experimental analysis using a 3.6 kW setup. Results demonstrate a power transfer efficiency around 89.4 %, while ensuring that current and voltage levels remain within safe operating areas for the components.

Abstract
Technologies related to the transportation electrification have been gaining attention in recent years. One technology that stands out is wireless charging, which still presents numerous challenges in terms of design and optimization of parameters. This article proposes a design methodology for optimizing the performance of an inductive power transfer (IPT) for wireless charging of electric vehicles, taking into account operating limits. The proposed methodology uses a PSO (Particle Swarm Optimization) algorithm to find the design variables that maximize the eficiency. The methodology and the development of a 3.6 kW experimental setup are presented, resulting in a power transfer efficiency of 89.4 %. © 2023 IEEE.

Abstract

Abstract
O uso de meios de transporte elétricos está em plena expansão. Esse fato nos leva a implementação de novas tecnologias relacionadas ao seu método de carregamento. Atualmente, o carregamento sem fio, conhecido como sistema WPT (Wireless Power Transfer), está sendo amplamente estudado e implementado. Assim, este trabalho apresenta uma revisão bibliográfica dos principais aspectos e características desse sistema, além de seus estágios de operação. Com base nessas informações, é proposto o projeto de um carregador WPT de 5 kW operando em 85 kHz, respeitando os padrões previstos na norma SAE J2954. Por fim, o circuito é simulado para validação da metodologia de projeto.

Abstract