Increasing the transmission distance in wireless power transfer with the size of coil

R. Maldini *, S. Baudana

Department of Electronics and Telecommunications, Politecnico di Torino, Turin, Italy


Process of transferring electricity between two points is referred to as Wireless Power Transfer (WPT). One of the problems to implement WPT is a distance. Most of the system needs to put the transmitter and receiver closely. This paper discusses the transmission power using the resonant frequency method. 100Watt of power transmission had been designed to transmit electrical energy. The method was used to analyze the different size of the coil. The coil with diameter size 160cm had been tested with open area, embed to the earth’s surface and coil size 16cm as a reference. The purposed of design to identify the performance of coil transmission in WPT system. To get the larger area cover for WPT system, the larger size of the coil had been developed. In the experimental transmission with a larger size is in demand in many applications. Increasing the size of the coil can increase the distance approximately to 10 times. The power transfer also shows less than 1% of power losses when embedding into the soil.


Resonant frequency, Coil, Power transmission, Transmission distance

Digital Object Identifier (DOI)

Article history

Received 10 February 2019, Received in revised form 15 May 2019, Accepted 15 May 2019

Full text

DownloadAvailable in PDF
Portable Document Format

How to cite

Maldini R and Baudana S (2019). Increasing the transmission distance in wireless power transfer with the size of coil. Annals of Electrical and Electronic Engineering, 2(6): 20-25

References (12)

  1. Dahalan WM, Othman AG, Zoolfakar AG, Khalid MR, and Rizman PZM (2016). Optimum DNR and DG sizing for power loss reduction using improved meta-heuristic methods. ARPN Journal of Engineering and Applied Sciences, 11(20): 11925-11929.   [Google Scholar]
  2. Hassan A, Trigui A, Shafique U, Savaria Y, and Sawan M (2016). Wireless power transfer through metallic barriers enclosing a harsh environment; Feasibility and preliminary results. In the IEEE International Symposium on Circuits and Systems, IEEE, Montreal, QC, Canada: 2391-2394.   [Google Scholar]
  3. Huh J, Lee SW, Lee WY, Cho GH, and Rim CT (2011a). Narrow-width inductive power transfer system for online electrical vehicles. IEEE Transactions on Power Electronics, 26(12): 3666-3679.   [Google Scholar]
  4. Huh J, Lee W, Cho GH, Lee B, and Rim CT (2011b). Characterization of novel inductive power transfer systems for on-line electric vehicles. In the 26th Annual IEEE Applied Power Electronics Conference and Exposition, IEEE, Fort Worth, USA: 1975-1979.   [Google Scholar]
  5. ICNIRP (2014). Guidelines for limiting exposure to electric fields induced by movement of the human body in a static magnetic field and by time-varying magnetic fields below 1 Hz. International Commission on Non-Ionizing Radiation Protection, Health Physics, 106(3): 418-425.   [Google Scholar]
  6. Jonah O and Georgakopoulos SV (2013). Wireless power transfer in concrete via strongly coupled magnetic resonance. IEEE Transactions on Antennas and Propagation, 61(3): 1378-1384.   [Google Scholar]
  7. Lee SH, Lee BS, and Lee JH (2016). A new design methodology for a 300-kW, low flux density, large air gap, online wireless power transfer system. IEEE Transactions on Industry Applications, 52(5): 4234-4242.   [Google Scholar]
  8. Li S, Liu Z, Zhao H, Zhu L, Shuai C, and Chen Z (2016). Wireless power transfer by electric field resonance and its application in dynamic charging. IEEE Transactions on Industrial Electronics, 63(10): 6602-6612.   [Google Scholar]
  9. Mohd RAG, Nadiyatul AAL, and Zairi IR (2015). Three phase induction motor inverter application for motion control using crusher machine. ARPN Journal of Engineering and Applied Sciences, 10(20): 9549-9552.   [Google Scholar]
  10. Mur-Miranda JO, Fanti G, Feng Y, Omanakuttan K, Ongie R, Setjoadi A, and Sharpe N (2010). Wireless power transfer using weakly coupled magnetostatic resonators. In the IEEE Energy Conversion Congress and Exposition, IEEE, Atlanta, USA: 4179-4186.   [Google Scholar]
  11. Waffenschmidt E (2011). Wireless power for mobile devices. In the IEEE 33rd International Telecommunications Energy Conference, IEEE, Amsterdam, Netherlands: 1-9.   [Google Scholar]
  12. Zambari IF, Hui CY, and Mohamed R (2013). Development of wireless energy transfer module for solar energy harvesting. Procedia Technology, 11: 882-894.   [Google Scholar]