Journal of Advanced Navigation Technology (한국항행학회논문지)

The Korean Navigation Institute (한국항행학회)
권호 표지
DOI QR코드

DOI QR Code

Performance Measurement of the Wireless Charging Devices Using Eletromagnetic Induction Techniques

전자기유도방식을 이용한 무선 충전 기기의 구현 및 성능 측정

  • Ryu, Daun (Department of Electronics Engineering, Incheon National University) ;
  • Kim, Young Hyun (Department of Electronics Engineering, Incheon National University) ;
  • Koo, Kyung Heon (Department of Electronics Engineering, Incheon National University)
  • Received : 2015.05.27
  • Accepted : 2015.06.22
  • Published : 2015.06.30
Download PDF
⟨ Previous Next ⟩

Abstract

This paper presented the design of wireless power transfer (WPT) system using electromagnetic induction techniques and analysed WPT efficiency. Also, we presented the optimum coil condition by measuring the efficiency variation according to some receiving coil parameter changes. Voltage change is measured by receiving coil position for the designed transmitting and receiving circuit. Voltage change according to inductance variation at the same position and charging time are compared at the same environment by using a developed application program to realize an optimum WPT system. Developed wireless power transfer system using electromagnetic induction techniques uses 125 kHz. It takes 16 minutes by using wired charger, and 23 minutes by using wireless charger for charging from 50% to 60% charging status.

본 논문에서는 전자기 유도 방식을 이용하여 무선전력전송 시스템을 구현하고 전송 효율을 측정하였다. 또한 수신부 코일의 세부 조건 변화에 따른 효율 변화를 확인하고 최적의 코일 조건을 제시하였다. 제작한 송수신부 회로를 이용하여 수신 코일 위치에 따른 전압 변화를 측정하고, 같은 위치에서 인덕턴스 값 변화에 따른 전압변화를 측정하였으며, 휴대폰 충전 시간을 측정하는 앱을 개발하여 충전 상태에 따른 무선전력전송 충전 시간을 비교하여 이를 통해 최적의 무선전력전송 시스템을 구현하고자 하였다. 개발된 전자기 유도방식을 이용한 무선전력전송 시스템은 주파수 125 kHz를 사용하며, 핸드폰 50%에서 60%까지 충전 시 유선 충전기는 16분, 무선충전기는 23분의 충전시간을 가졌다.

Keywords

References

  1. Y. Moon, S. Kang, G. Kim, and S. Im, "Technology trend and implementations for mobile WPT," The Journal of Electronics and Information Engineers, Vol. 38, No. 10, pp. 26-34, Oct. 2011.
  2. Y. Won, and S. Im, "Technology trend and standard for WPT," The Journal of the Korean Institute of Communication Sciences, Vol. 30, No. 11, pp. 52-59, Oct. 2013.
  3. J. Park, "Enhancement of efficiency for WPT," The Journal of Electronics and Information Engineers, Vol. 39, No. 8, pp. 44-50, Aug. 2012.
  4. D. K. Park, "A study on improvement of conversion efficiency of rectifying circuit for wireless power transmission," The Journal of Korea Navigation Institute, Vol. 14, No. 5, pp. 655-660, Oct. 2010.
  5. J. H. Lim, K.D. Han, and D. K. Park, "Battery charging system using magnetic induction," Journal of the Korea Institute of Information and Communication Engineering, Vol. 17, No. 10, pp. 2239-2244, Oct. 2013. https://doi.org/10.6109/jkiice.2013.17.10.2239
  6. J. W. Kim, H. C. Son, S. H. Jung, and S. G. Kim, "A planer spiral antenna of multi-tabs for wireless power transmission of inductive coupling," The Journal of Korean Institute of Electromagnetic Engineering Sciences, Vol. 20, No. 8, pp. 753-760, Sept. 2009. https://doi.org/10.5515/KJKIEES.2009.20.8.753
  7. J. K. Kim, H. H. Ji, Y. G. Choi, Y. H. Yun, K. H. Kim, and Y. J. Park, "Study on arrangement of self-resonant coils on wireless power transfer system based on magnetic resonance," The Journal of Korean Institute of Electromagnetic Engineering Sciences, Vol.21, No. 6, pp. 564-572, June. 2010. https://doi.org/10.5515/KJKIEES.2010.21.6.564
  8. H. C. Son, J. W. Kim, Y. J. Park, and K. H. Kim, "Efficiency analysis and optimal design method of a circular loop resonant coil for wireless power transfer," The Institute of Electronics and Information Engineers Proceedings of the IEIE Conference, Jeju:, Korea, Vol. 33, No. 1, pp. 1069-1071, June. 2010.

Cited by

  1. 1m 거리에서 최적화된 안테나를 통한 공진방식 무선전력전송 vol.20, pp.3, 2015, https://doi.org/10.12673/jant.2016.20.3.246
  2. 이형코일을 이용한 무선전력전송 시스템 송신 코일 최적화 vol.21, pp.6, 2015, https://doi.org/10.12673/jant.2017.21.6.614
  3. 부하 임피던스 변화를 고려한 복수 수신기 무선전력전송 구현 vol.22, pp.2, 2015, https://doi.org/10.12673/jant.2018.22.2.148