A Parameter Design Method for a Wireless Power Transmission System with a Uniform Magnetic Field

Li Ji, Chi Zhang, Fuchen Ge, Buren Qian and Hongjun Sun ()
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Li Ji: College of Information Science and Engineering, China University of Petroleum-Beijing, Beijing 102249, China
Chi Zhang: College of Information Science and Engineering, China University of Petroleum-Beijing, Beijing 102249, China
Fuchen Ge: College of Information Science and Engineering, China University of Petroleum-Beijing, Beijing 102249, China
Buren Qian: College of Information Science and Engineering, China University of Petroleum-Beijing, Beijing 102249, China
Hongjun Sun: College of Information Science and Engineering, China University of Petroleum-Beijing, Beijing 102249, China

Energies, 2022, vol. 15, issue 23, 1-15

Abstract: In a wireless power transfer (WPT) system, misalignment on the transceiver side has a major impact on the transmission efficiency. However, a uniform magnetic field can mitigate the detrimental impact of offsets on the system performance. In this paper, an optimized double-D (DD) coil is proposed by dividing the wires into two groups. The parametric design approach proceeds from the outside to the inside of the coil. The uniformity of the magnetic field of the improved design is increased by 20.7% compared to that of a regular DD coil. The average transmission efficiency of the final test prototype can reach 85%, and the offset rates in the X and Y directions are only 3.21% and 3.43%, respectively, when misalignment occurs. This design can effectively improve the anti-offset ability of the system and can be generalized to the design of other types of coils.

Keywords: wireless power transfer; coupling mechanism; uniform magnetic field; double-D coil (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2022
References: View complete reference list from CitEc
Citations: View citations in EconPapers (1)

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