Abstract
Aiming at the power supply problem of high-speed rotating equipment, a wireless power transfer system based on U-shaped core coupling mechanism with a primary coil is proposed. Firstly, the transfer model of the U-type coupling mechanism wireless power transfer system is established. The expressions of transfer power and transfer efficiency are obtained by theoretical calculation, and the factors affecting the transfer characteristics of the system are analyzed. At the same time, the magnetic field distribution of the system and the coupling parameters change when the relative position of the primary and secondary coils changes through simulation analysis. Finally, an experimental platform is established for experimental verification. The results show that the system can obtain 1.72 w output power with 51.19% transfer efficiency when the distance between the secondary coil and U-core is 15 mm and 30 mm, respectively. The transmission efficiency and power of the primary coil and secondary coil under different misalignments are tested and compared. It is proved that the wireless power transfer system based on U-type coupling mechanism can effectively realize the stable power supply of the rotating equipment monitoring system.
Highlights
As a new type of power transmission mode, wireless power transfer (WPT) technology has been widely developed in different working environment and application fields with the deepening of its research
I-core track has the advantages of narrow width, large air gap, higher output power, and low construction cost. e U-core track is smaller than the I-type track, with the maximum efficiency reaching 91%, and the power is 9.5 kW [4, 5]
In 2020, in order to solve the problem of wireless power supply for equipment on rotating shaft, University of Science and Technology Beijing designed a high-frequency induction power supply system with the primary coil composed of aluminum ring and secondary coil made of PCB. e eddy current loss caused by the central drive shaft of the coil was studied and analyzed. e system has been applied stably in the field with good operation effect [12, 13]
Summary
As a new type of power transmission mode, wireless power transfer (WPT) technology has been widely developed in different working environment and application fields with the deepening of its research. In 2020, in order to solve the problem of wireless power supply for equipment on rotating shaft, University of Science and Technology Beijing designed a high-frequency induction power supply system with the primary coil composed of aluminum ring and secondary coil made of PCB. Aiming at the problem of wireless power supply for rotating equipment, this paper proposes a WPT system based on U-core coupling mechanism in the primary side. Based on the circuit topology of U-type coupling mechanism WPT system, the expressions of system transmission efficiency and power are derived, the system simulation model is established, the spatial magnetic field distribution of the system is analyzed, and the feasibility of the system is verified by setting up an experimental platform. When the coil moves 15 mm, the mutual inductance increases by 4.28 μH and 25.90%. erefore, the maximum efficiency and output power of the system can be improved by moving the secondary coil up and down to make the system mutual inductance to the maximum value
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Free) 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
