Sistema de transferência de energia sem fio
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Tipo
TCC
Data de publicação
2019-06
Periódico
Citações (Scopus)
Autores
Chaubet, Allan Seiti Sassaqui
Orientador
Santos, Edson Tafeli Carneiro dos
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Os sistemas de transferência de energia sem fio baseiam-se no acoplamento magnético de bobinas e permitem que diversos dispositivos sejam alimentados sem o uso de cabos. Após estudar alguns trabalhos realizados na área e conceitos teóricos que influenciam estes sistemas, como o efeito da ressonância, a indução magnética e o efeito pelicular, foi possível desenvolver o protótipo completo apresentado neste trabalho. O sistema apresentado neste trabalho é composto por um oscilador simples, responsável por gerar um sinal alternado a partir de uma fonte de alimentação de corrente contínua, que alimenta a bobina transmissora, que está acoplada magneticamente à bobina receptora, que coleta a energia emitida, seguida de um circuito retificador com um regulador de tensão de 5V, possibilitando alimentar uma carga. Os circuitos foram montados em matriz de contato e foram confeccionadas 4 bobinas em circuito impresso, sendo 2 modelos de bobinas transmissoras e 2 modelos de bobinas receptoras, que permitiram a realização de testes com diferentes configurações de bobinas. Observou-se o impacto da variação da frequência, da tensão na bobina transmissora, da variação da distância entre as bobinas e do número de espiras das bobinas. A análise destes testes permitiu também observar a eficiência das configurações propostas e também a capacidade de alimentar cargas resistivas, resultando em possibilidades para diversas aplicações.
Wireless power transfer systems are based on the magnetic coupling of coils, allowing several electronic devices to be supplied without using cables. After studying related works, as well as theoretical concepts, such as the resonance effect, the magnetic induction and the skin effect, it was possible to elaborate the complete prototype presented in this paper. The system proposed in this work is compounded of a simple oscillator, which is responsible to generate an alternated signal from the direct current power supply, connected to the transmitting coil, which is magnetically coupled to the receiving coil that collects the energy, followed by a rectifier and a 5V voltage regulator, which can supply energy to a final load. The circuits were assembled on a breadboard and 4 coils were produced using PCB technology, considering 2 different transmitting coils and 2 receiving coils, which allowed several tests to be conducted, with different configurations of coils. These tests observed the impact of the change on the operating frequency, the voltage supplied to the transmitting coil, the distance between the coils and the number of turns of the coils. The analysis of these tests allowed to observe the efficiency of the proposed configurations, as well as their capability to provide enough power for certain resistive loads, resulting in several possibilities of applications.
Wireless power transfer systems are based on the magnetic coupling of coils, allowing several electronic devices to be supplied without using cables. After studying related works, as well as theoretical concepts, such as the resonance effect, the magnetic induction and the skin effect, it was possible to elaborate the complete prototype presented in this paper. The system proposed in this work is compounded of a simple oscillator, which is responsible to generate an alternated signal from the direct current power supply, connected to the transmitting coil, which is magnetically coupled to the receiving coil that collects the energy, followed by a rectifier and a 5V voltage regulator, which can supply energy to a final load. The circuits were assembled on a breadboard and 4 coils were produced using PCB technology, considering 2 different transmitting coils and 2 receiving coils, which allowed several tests to be conducted, with different configurations of coils. These tests observed the impact of the change on the operating frequency, the voltage supplied to the transmitting coil, the distance between the coils and the number of turns of the coils. The analysis of these tests allowed to observe the efficiency of the proposed configurations, as well as their capability to provide enough power for certain resistive loads, resulting in several possibilities of applications.
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Palavras-chave
transferência de energia sem fio , acoplamento magnético ressonante , bobina em circuito impresso , wireless power transfer , resonant magnetic coupling , PCB coils