Análise teórica de bobinas integradas com foco em transmissão de energia sem fio Near-Field

Abstract

The present work consists of a theoretical analysis of integrated coils for wireless energy transmission, with emphasis on near-field transmission technology. The main objective is to understand the operation of these coils and explore the characteristics and properties that influence the efficiency of energy transmission. The study begins with an in-depth discussion of the concepts of inductance, capacitance and resonant frequency, highlighting their importance in wireless power transmission. In addition, the characteristics and properties of the coils are discussed, such as their geometry, number of turns, resistance and quality factor Q. The coil geometry, such as shape and size, influences the surface area and the distribution of the magnetic field, affecting the transfer capacity. The material used in the construction of the coil must have high electrical conductivity and good magnetic properties. The number of coil turns influences its inductance, and a greater number of turns generally results in higher transmission efficiency. The electrical resistance of the coil is a factor to be considered, as it affects the energy loss due to heating. The Q factor, on the other hand, is a measure of the efficiency of the coil, and it is desirable that it have a high value to minimize energy losses. In addition to discussing the characteristics of the coils, the work also presents methodologies for evaluating these devices. The study shows that integrated coils play a key role in the development of efficient and viable wireless power transmission systems. Understanding these concepts and properties offers insights and guidelines for the design and improvement of these devices, contributing for the advancement of wireless power transmission technology.