Analysis of the Magnetic Field and the Magnetic Force in a Magnetic Clutch of the Automotive Air Conditioner 970115
This paper investigated the characteristics of the magnetic field and the attractive magnetic force in a magnetic clutch of the automotive air conditioner. The magnetic force was calculated by using the finite element method, the principle of virtual work and the Maxwell stress tensor, and it was measured by experiment. Magnetic field is not affected by the pulley groove and the attractive magnetic force is also not significantly affected by the bearing because the total magnetic field in the airgap is not changed. The magnetic force increases rapidly as the airgap decreases. The bridges in the disk and the pulley decrease the magnetic force because they create the radial flux to saturation and reduce the effective axial magnetic flux in the airgap to the amount of the radial magnetic flux flowing in the bridges. Also the magnetic force is decreased proportionally as the increase of the cross-sectional area of bridge.
Citation: Jang, G., Lee, K., Kim, K., Cha, Y. et al., "Analysis of the Magnetic Field and the Magnetic Force in a Magnetic Clutch of the Automotive Air Conditioner," SAE Technical Paper 970115, 1997, https://doi.org/10.4271/970115. Download Citation
Gunhee Jang, Kyungho Lee, Kwangil Kim, Yongkil Cha, Taeyoung Park, Kihyo Kim, Minsoo Han
Hanyang Univ., Halla Climate Control Corp.
SAE International Congress and Exposition
Automotive Climate Control Design Elements-SP-1239, SAE 1997 Transactions - Journal of Passenger Cars-V106-6