Journal
ENERGIES
Volume 12, Issue 4, Pages -Publisher
MDPI
DOI: 10.3390/en12040607
Keywords
wireless power transfer; electric vehicles; static-dynamic hybrid; segmented transmitting coils; power stabilization
Categories
Funding
- State Grid Corporation Science and Technology Project Funding (Selection of Wireless Charging Frequency for Electric Vehicles and Its Impact on Environment)
- National key RD project [2018YFB0106300]
- National Natural Science Foundation of China [51777028]
- Scientific Research Foundation of Graduate School of Southeast University [YBJJ1728]
- Postgraduate Research & Practice Innovation Program of Jiangsu Province [KYCX17-0088]
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In order to promote the driving range of the electric vehicles (EVs), decrease the demand for large capacity battery and create more charging opportunities for the EVs, the static-dynamic hybrid wireless charging system is presented to utilize waiting time of traffic lights at intersections to replenish electricity in this paper. Firstly, the topology and principle of the proposed static-dynamic hybrid wireless charging system with short-segmented coils at traffic lights are introduced. Secondly, the general circuit model of the static-dynamic hybrid wireless charging system with multi-coupling between the primary and secondary sides is developed. The design method of the compensation circuit in primary side based on the number and the positions of the energized primary coils is investigated. After analyzing the characteristics of the system varying with the position of the single load, the control conceptions of the energizing mode alternating in primary side and the combination of the primary compensation capacitors are put forward. Then the power stabilization control strategy of the static-dynamic hybrid wireless charging system with multi short-segmented coils and multi loads is proposed. Finally, the theoretical analyses are verified with the experiments.
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