Compensating Resonant Frequency via Adjusting Adjustable Coil Automatically

Author(s): Jin Xu*, Yuting Zhao

Journal Name: Recent Advances in Electrical & Electronic Engineering
Formerly Recent Patents on Electrical & Electronic Engineering

Volume 12 , Issue 5 , 2019

Become EABM
Become Reviewer

Graphical Abstract:


Background: Detuning is the main problem that affects the efficiency and transmission distance of the resonant coupling Wireless Power Transmission (WPT). The distance of load and the offset of the load position could cause serious detuning.

Methods: This paper presents an adjustable coil in which inductance can be adjusted. Then a model of WPT was established that could compensate resonant frequency automatically using the adjustable coil. Next, the relationship between the primary resonant frequency and the transmission efficiency is analyzed from the circuit. The analysis proved that the design of the adjustable coil could improve the transmission efficiency of the WPT system. Finally, a prototype of WPT system was built.

Results: The experimental results showed that WPT system with adjustable coil can improve the transmission efficiency which proves the theoretical research. At the same time, it has essential reference value for the future research of WPT.

Conclusion: In this paper, aiming at the system detuning caused by some other factors, such as the position shift of the load during the wireless power transmission, an adjustable coil is proposed.

Keywords: Adjustable coil, frequency compensation automatically, frequency tracking, WPT system detuning, LC resonant resonant frequency.

Y. Liu, W. Wang, and N. Ghadimi, "Electricity load forecasting by an improved forecast engine for building level consumers", Energy, vol. 139, pp. 18-30, 2017.
A.R. Gollou, N. Ghadimi, and A.R. Gollou, "A new feature selection and hybrid forecast engine for day-ahead price forecasting of electricity markets", J. Intell. Fuzzy Syst., vol. 32, no. 6, pp. 1-15, 2017.
N. Ghadimi, and M. Firouz, "Short-term management of hydro-power systems based on uncertainty model in electricity markets", J. Power Technol, vol. 95, no. 4, pp. 265-272, 2015.
H. Leng, X. Li, J. Zhu, H. Tang, Z. Zhang, and N. Ghadimi, "A new wind power prediction method based on ridgelet transforms, hybrid feature selection and closed-loop forecasting", Adv. Eng. Inform., vol. 36, pp. 20-30, 2018.
H. Ebrahimian, S. Barmayoon, and M. Mohammadi, "The price prediction for the energy market based on a new method’", Econ. Res. Ekon. Istraz., vol. 31, no. 1, pp. 313-337, 2018.
M. Hamian, A. Darvishan, and M. Hosseinzadeh, "A framework to expedite joint energy-reserve payment cost minimization using a custom-designed method based on mixed integer genetic algorithm", Eng. Appl. Artif. Intell., vol. 72, pp. 203-212, 2018.
M. Fu, H. Yin, and M. Liu, "Loading and power control for a high-efficiency class E PA-driven megahertz WPT System", IEEE Trans. Ind. Electron., vol. 63, no. 11, pp. 6867-6876, 2016.
A. Mohamed, A. Berzoy, and O. Mohammed, "Experimental validation of comprehensive steady-state analytical model of bidirectional WPT System in EVs applications", IEEE Trans. Vehicular Technol., vol. 66, no. 1, pp. 5584-5594, 2017.
H. Dai, Y. Huang, and C. Li, "Energy-efficient resource allocation for device-to-device communication with WPT", IET Commun., vol. 11, no. 3, pp. 326-334, 2017.
B. Suzhi, Y. Zeng, and R. Zhang, "Wireless powered communication networks: An overview", IEEE Wirel. Commun., vol. 23, no. 2, pp. 10-18, 2015.
F. Wenzhen, Z. Bo, and Q. Dongyuan, "Research on frequency tracking resonance coupled power wireless transmission system", DVDE, pp. 41-46, 2009.
N.Y. Kim, K.Y. Kim, Y.H. Ryu, J. Choi, D.Z. Kim, and C. Yoon, "K. Park and S. Kwn, Automated adaptive frequency tracking system for efficient mid-range wireless power transfer via magnetic resonanc coupling In:", 2012 42nd European Microwave Conference. Amsterdam, Netherlands, 2013, 221-224.
P. Tan, H. He, and X. Gao, "A frequency-tracking method based on a SOGI-PLL for wireless power transfer systems to assure operation in the resonant state", J. Power Electron., vol. 16, no. 3, pp. 1056-1066, 2016.
R. Mai, Y. Liu, and Y. Li, "An active rectifier based maximum efficiency tracking method using an additional measurement coil for wireless power transfer", IEEE Trans. Power Electron., vol. 33, no. 1, pp. 716-728, 2017.
J.A. Kolmer, D.F. Garvin, and Y. Jin, "Expression of a thatcher wheat adult plant stem rust resistance QTL on chromosome arm 2BL is Enhanced by", Crop Sci., vol. 51, no. 2, pp. 526-533, 2015.
M. Xia, and S. Aissa, "On the efficiency of far-field wireless power transfer", IEEE Trans. Signal Process., vol. 63, no. 11, pp. 2835-2847, 2015.
Y. Zeng, B. Clerckx, and R. Zhang, "Communications and signals design for wireless power transmission", IEEE Transact. Communicat., vol. 65, no. 5, pp. 2264-2290, 2017.

Rights & PermissionsPrintExport Cite as

Article Details

Year: 2019
Page: [432 - 438]
Pages: 7
DOI: 10.2174/2352096511666180705114908
Price: $25

Article Metrics

PDF: 15