Abstract
Inductively coupled power transfer (ICPT) technology realizes energy transfer across relatively large air gap with magnetic coupling. However, the flexibility of traditional ICPT system is limited because only one-degree freedom is allowed. This paper proposes the design, simulation, and implementation of a novel multi-degree of freedom power pickup mechanism for ICPT system, which can receive power at arbitrary angle in space. The pickup mechanism is designed of regular tetrahedron structure, and the pickup coils are fixed on its six edges. An optimal winding strategy of the six coils is proposed to increase the output power capacity through theoretical analysis and Maxwell simulation. The experimental results show that the pickup mechanism has a good power pickup capacity, and system efficiency is relatively high at any angle of the pickup mechanism.
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