Wireless Charging System for Autonomous Underwater Vehicle Based on Dynamic Traveling Wave Magnetic Field
Wireless charging technology is a kind of technology that realizes energy transmission through non-contact method,with the advantages of high safety and strong environmental adaptability,which is one of the key technologies to enhance the unattended capability of underwater autonomous vehicles(AUV).To meet the special requirements of anti-mis-alignment and miniaturization design of receiving device in wireless charging system,an AUV wireless charging system based on dynamic traveling wave magnetic field is proposed in this paper.Firstly,a new magnetic coupling device consis-ting of orthogonal transmitting and dipole receiving overlapping is designed.The two layers of transmitting windings are de-coupled from each other to form a constant amplitude traveling wave under the space-time coordination mechanism to sup-press output fluctuation.Then,a wireless charging system circuit based on current doubler is proposed and analyzed.Fi-nally,an experimental platform is built to verify the feasibility of the proposed system.The results show that the system can deliver1.2 kW to the load with a system efficiency of 87.04%,and especially the proposal achieves stable output in the range of rotational misalignment of[-30°,30°]and axial misalignment of[-30 mm,30 mm].
autonomous underwater vehicle(AUV)wireless power transfermagnetic couplingtraveling wave magnetic field
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