© The Institution of Engineering and Technology
In this work, the massive modelling and computation costs required by the calculation of the magnetic leakage coefficient were avoided by using the threedimensional finite element method (3DFEM) in the initial design and optimisation of hybrid magnetic couplers (HMCs). The equivalent magnetic circuit network model of HMCs was established, and the equivalent reluctance of the model was calculated to obtain the analytic expression of the magnetic leakage coefficient of HMCs. A set of 1:2 prototypes was designed and manufactured. Simulation analysis and experimental tests were conducted to verify the correctness of the calculation of magnetic leakage. The calculated and experimental values of the magnetic leakage coefficient and the 3DFEM were in good agreement. The output torque value of the HMC was analysed and calculated by considering that the airgap leakage was closer to the test value and was more accurate than the value calculated without considering the airgap leakage effect. This study provided a theoretical reference for the design and investigation of HMCs.
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