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Abstract(s)
Os sistemas de transferĂȘncia de energia sem ïŹos (Wireless Power Transfer - WPT) sĂŁo muito eïŹcientes quando se deseja alimentar um ou dois dispositivos localiza-dos em uma ĂĄrea 2D especĂïŹca. No entanto, estes mĂ©todos nĂŁo sĂŁo adequados aos casos em que se necessita carregar uma maior quantidade de aparelhos situados em diversas localizaçÔes de um volume 3D. Assim, neste trabalho, propĂ”em-se o desenvolvimento de um algoritmo em linguagem MATLAB capaz de simular uma tĂ©cnica de transferĂȘncia de energia sem ïŹos ainda pouco conhecida, a WPT ativada por cavidade ressonante. Neste mĂ©todo, utilizam-se os modos eletro-magnĂ©ticos naturais de uma cĂąmara metĂĄlica, preenchida com ar, para produzir campos magnĂ©ticos uniformes, e assim alimentar pequenas bobinas recetoras contidas no interior desta cĂąmara. A cavidade pode apresentar dimensĂ”es bastante variadas, tratando-se desde uma caixa de brinquedos atĂ© a sala de uma casa. O cĂłdigo desenvolvido permite prever o coeïŹciente de acoplamento e a mĂĄxima eïŹciĂȘncia possĂvel deste tipo de sistema para uma pequena bobina recetora, diversos tamanhos de cĂąmara e um grande nĂșmero de modos eletromagnĂ©ticos.
Wireless power transfer (WPT) systems are very eïŹcient for powering one or two devices located in a speciïŹc 2D area. However, these methods are not appropriate in cases where it is necessary to load a greater amount of devices located in several parts of a 3D volume. Thus, in this work, it is proposed the development of an algorithm, in MATLAB language, capable of simulating a still little known WPT technique, the resonant cavity enabled wireless power transfer. In this method, the natural electromagnetic modes of an air-ïŹlled metal chamber are used to produce uniform magnetic ïŹelds, and therefore feed small coils contained within this chamber. The cavity can present quite varied dimensions, from a box of toys to the room of a house. The developed code allows to predict the coupling coeïŹcient and maximum possible eïŹciency of this type of system for a small receiver coil, several chamber sizes and a large number of electromagnetic modes.
Wireless power transfer (WPT) systems are very eïŹcient for powering one or two devices located in a speciïŹc 2D area. However, these methods are not appropriate in cases where it is necessary to load a greater amount of devices located in several parts of a 3D volume. Thus, in this work, it is proposed the development of an algorithm, in MATLAB language, capable of simulating a still little known WPT technique, the resonant cavity enabled wireless power transfer. In this method, the natural electromagnetic modes of an air-ïŹlled metal chamber are used to produce uniform magnetic ïŹelds, and therefore feed small coils contained within this chamber. The cavity can present quite varied dimensions, from a box of toys to the room of a house. The developed code allows to predict the coupling coeïŹcient and maximum possible eïŹciency of this type of system for a small receiver coil, several chamber sizes and a large number of electromagnetic modes.
Description
Keywords
TransferĂȘncia de energia sem ïŹos Cavidade ressonante MatLabÂź CoeïŹciente de acoplamento Wireless Power Transfer Resonant cavity Coupling coefficient