Improved Efficiency of Inductive Power Transfer in Misalignment Conditions with Multi Coil Design
Main Article Content
Abstract
In charging process of electric vehicle, a misalignment between the transmitter (Tx) and receiver (Rx) coupling structure decreases the efficiency of the wireless power transfer. In inductive power transfer system, misalignment reduces the effective coupling between the Tx and Rx coils. In this work, based on previous multiple coil structures, a new multi coil design in proposed to increase the efficiency of the power transfer. Here, a multi coil structure with two rectangular and four spiral coils is designed with the overall dimension of the coil structure 26.5 cm x 36.5 cm. The measurement shows, that for coil distance below 10.3 cm and a lateral misalignment of maximal 10 cm (27.4%), the efficiency of the designed multi coil structure is better compared to previous coil structures. However for larger coil distance or larger misalignment, the efficiency of the new coil structure deteriorates significantly.
Downloads
Article Details
Authors who publish with this journal agree to the following terms:
- Authors retain copyright and grant the journal right of first publication with the work simultaneously licensed under a Creative Commons Attribution License that allows others to share the work with an acknowledgement of the work's authorship and initial publication in this journal.
- Authors are able to enter into separate, additional contractual arrangements for the non-exclusive distribution of the journal's published version of the work (e.g., post it to an institutional repository or publish it in a book), with an acknowledgement of its initial publication in this journal.
- Authors are permitted and encouraged to post their work online (e.g., in institutional repositories or on their website) prior to and during the submission process, as it can lead to productive exchanges, as well as earlier and greater citation of published work (See The Effect of Open Access).
References
L. Zhao, D. Thrimawithana, and U. Madawala, "A Hybrid Bi-directional Wireless EV Charging System Tolerant to Pad Misalignment," IEEE Trans. Ind. Electron., vol. 64, no. 99, pp. 7079–7086, 2017.
K. Fotopoulou and B. W. Flynn, "Wireless Power Transfer in Loosely Coupled Links : Coil Misalignment Model," IEEE Journals Mag., vol. 47, no. 2, pp. 416–430, 2011.
X. Mou and H. Sun, "Wireless Power Transfer : Survey and Roadmap," in 2015 IEEE 81st Vehicular Technology Conference (VTC Spring), 2015, no. 2, pp. 1–5.
K. A. Kalwar, S. Mekhilef, M. Seyedmahmoudian, and B. Horan, "Coil Design for High Misalignment Tolerant Inductive Power Transfer System for EV Charging," MDPI (Multidisciplinary Digit. Publ. Institute)- Energies, vol. 9, no. 11, pp. 12–17, 2016.
M. L. Ferraro, "Design and Control of Inductive Power Transfer System for Electric Vehicle Charging," Universite de Toulouse, Laplace,France, 2017.
X. Wei, Z. Wang, and H. Dai, "A Critical Review of Wireless Power Transfer via Strongly Coupled Magnetic Resonances," MDPI (Multidisciplinary Digit. Publ. Institute)- Energies, vol. 7, no. 7, pp. 4316–4341, 2014.
C. Carretero, "Coupling Power Losses in Inductive Power Transfer Systems with Litz-Wire Coils," IEEE Trans. Ind. Electron., vol. 64, no. 6, pp. 4474–4482, 2017.
X. Lu, P. Wang, D. Niyato, D. I. Kim, Z. Han, and C. Engineering, "Wireless Charging Technologies : Fundamentals, Standards, and Network Applications," IEEE Commun. Surv. Tutorials, vol. 18, no. 2, pp. 1413–1452, 2016.
Lu,Xiao, D. Nyato, P. Wang, D. In Kim, and Z. Han, "Wireless Charger Networking For Mobile Device: Fundamentals,Standards, and Applications," IEEE Wirel. Commun., vol. 22, no. 2, pp. 126–135, 2015.
M. Budhia, J. T. Boys, and G.A. Covic, "Development of a Single-Sided Flux Magnetic Coupler for Electric Vehicle IPT Charging Systems," IEEE Trans. Ind. Electron., vol. 60, no. 1, pp. 318– 328, 2013.
X. Qu, Y. Jing, H. Han, S. C. Wong, and C. K. Tse, "Higher Order Compensation for Inductive-Power- Transfer Converters with Constant-Voltage or Constant-Current Output Combating Transformer Parameter Constraints," IEEE Trans. Power Electron., vol. 32, no. 1, pp. 394–405, 2017.
M. Dehghanian, A. Namadmalan, and M. Saradarzadeh, "Optimum Design for Series-Series Compensated Inductive Power Transfer Systems," in 8th Power Electronics, Drive Systems & Technologies Conference (PEDSTC 2017), 2017, no. 2.
P. Raval, D. Kacprzak, and A. Hu, "Computational Finite Element Software Assisted Development of a 3D Inductively Coupled Power Transfer System," Adv. Electromagn., vol. 2, no. 3, pp. 11–17, 2013.
S. Kuzey, S. Balci, and N. Altin, "Design and analysis of a wireless power transfer system with alignment errors for electrical vehicle applications," Int. J. Hydrog. Energy xxx Elsevier, pp. 1–12, 2017.
C. Nataraj, S. Khan, M. H. Habaebi, and A. G. A. Muthalif, "Analysis of Mutual Inductance and Coupling Factor of," ARPN J. Eng. Appl. Sci., vol. 12, no. 13, pp. 4007–4012, 2017.
B. H. Waters, B. J. Mahoney, G. Lee, and J. R. Smith, "Optimal Coil Size Ratios for Wireless Power Transfer Applications," in IEEE International Symposium on Circuits and Systems (ISCAS), 2014, vol. 1, no. 1, pp. 2045–2048.
Z. Luo and X. Wei, "Analysis of Square and Circular Planar Spiral Coils in Wireless Power Transfer System for Electric Vehicles," IEEE Trans. Ind. Electron., vol. 65, no. 1, pp. 331–341, 2018.