무선 유도 및 공진 충전방식의 전송효율 연구
A Study on Transmission Efficiency of Wireless Power Induction and Resonant Charging Methodologies
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초록
웨어러블 디바이스는 일상생활에서 실질적으로 필수적이며 사용자들에게 편리하게 이용되고 건강관리와 의학 분야 등에활용되고 있다. 전력분야에서 전원 배터리의 사용시간의 한계를 극복하고 효율적인 충전방법에 관한 많은 연구가 진행되고있다. 무선전력전송은 전선을 사용하지 않고 무선으로 전기장을 부하에 전력을 전달하는 기술이다. 이 전송기술은 저 전력의스마트폰에서부터 고 전력을 사용하는 철도 충전시스템까지 응용분야가 다양하다. 충전방식은 유도방법과 자기공진방법의 2종류로 나누는데 자기공진주파수는 13.45 Mhz를 사용하였다. 본 연구에서는 전송효율을 측정 비교하기 위하여 2 종류의 하드웨어를 구현한 후 비교하는데 있다.
Abstract
Wearable devices have become practically indispensable to daily life and helped people track and manage fitness,health, and medical functions etc. As these wearable devices become smaller and more comfortable for the user, thedemand for longer run time and charging ways presents new challenges for the power management engineer. Wirelesspower transfer (WPT) is the technology that forces the power to transmit electromagnetic field to an electrical loadthrough an air gap without interconnecting wires. This technology is widely used for the applications from low powersmart phone to high power electric railroad and main electrical grid. There are two kinds of WPT methods: Inductivecoupling and magnetic resonant coupling. The model using magnetic resonant coupling method is designed for a resonantfrequency of 13.45 MHz. In this study, the hardware implementations of these two coupling methods are carried out, andthe efficiencies are compared.
참고문헌 (6)
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