Research of Magnetic Coupler Array for IPT System
- 1 School of Automation, Chongqing University, Chongqing, China
- 2 School of Automation, Chongqing University, Chongqing, China
- 3 School of Automation, Chongqing University, Chongqing, China
- 4 School of Automation, Chongqing University, Chongqing, China
Abstract
The advance of Inducive Power Transfer (IPT) system is capable to transfer large power across an air gap of sufficient distance, but the power level and charging area of receiver are limited by the magnetic coupler of IPT system. This paper analyses the correlative factors which effect maximum output power ( P m ), it reveal s P m is inversely proportional with magnetic flux of power receiving coils. New ferrite array structure is proposed as the basic part of magnetic coupler that focusing on enhancing the equilibrium of magnetic flux distribution at charging area and increasing power transfer distance. The method of winding on ferrite array is quite flexible and the power transmission distance can be increased by changing the mode of ferrite array windings while magnetic field uniform is reduced, users can chose the suitable mode of winding for different IPT system. Finally the validity of theory analysis is tested by a 3D finite element modeling tool.
- Mickel Budhia, G. A. Covic, J. T. Boys, “Design and Optimisation of Magnetic Structures for Lumped Inductive power Transfer Systems,” IEEE Energy Conversion Congress and Exposition, 2009, pp. 2081-2088.
- Aristeidis Karalis, J. D. Joannopoulos, Marin Soljacic, “Efficient Wireless Non-radiative Mid-range Energy Transfer,” Annals of Phisics, 2007, pp. 34-48.
- André Kurs, Aristeidis Karalis, Robert Moffatt, et al., “Wireless Power Transfer via Strongly Coupled Magnetic Resonances,” Science, Vol. 317, No.5834, 2007, pp. 83-86. doi:10.1126/science.1143254
- C. S. Tang, Y. Sun, Y. G. Su, “Determining Multiple Steady-state ZCS Operating Points of a Switch-mode Contactless Power Transfer System,” IEEE Transactions Power Electronics, Vol. 24, No.2, 2009, pp. 416-425. doi:10.1109/TPEL.2008.2007642
- Mickel Budhia, G. Covic, J. Boys, “A New IPT Magnetic Coupler for Electric Vehicle Charging Systems,” IEEE Industrial Electronics Society, 2010, pp.2487-2492.
- C. S. Tang, X. Dai, Z. H. Wang, Y. Sun and A. P. Hu, “Frequency Bifurcation Phenomenon Study of a Soft Switched Push-pull Contactless Power Transfer System,” in Proc. IEEE Conf. Ind. Electron, 2011, pp. 1981-1986.
- Y. G. Su, Z. H. Wang, Y. Sun, et al., “Research of Phase Shift Control System Modeling Based on IPT,” Transactions of China Electrotechnical Society, Vol. 23, No. 7, 2008, pp. 92-97.
- W. X. Zhong, C. K. Lee and S. Y. Hui, “Wireless Power Domino-resonator Systems with Noncoaxial Axes and Circular Structures,” IEEE Transactions Power Electronics, Vol. 27, No. 11, 2012, pp. 4750-4762. doi:10.1109/TPEL.2011.2174655
- S. Y. R. Hui, W. C. H. Wing, “A New Generation of Universal Contactless Battery Charging Platform for Portable Consumer Electronic Equipment,” IEEE Transactions on Power Electronics, Vol. 20, No. 3, 2005, pp. 620—627. doi:10.1109/TPEL.2005.846550
- J. Huh, S. W. Lee, W. Y. Lee, G. H. Cho and C. T. Rim, “Narrow-width Inductive Power Transfer System for Online Electrical Vehicles,” IEEE Transactions Power Electronics, Vol. 26, No. 12, 2011, pp. 3666-3679. doi:10.1109/TPEL.2011.2160972
- H. A. Haus, “Waves and Fields in Optoelectronics,” Prentice-Hall, New Jersey, 1984.