(Stellenbosch : Stellenbosch University, 2018-03) Agenbach, Charles Johannes; Els, D. N. J.; Wang, R-J.; Stellenbosch University. Faculty of Engineering. Dept. of Mechanical and Mechatronic Engineering.
ENGLISH ABSTRACT: Unbalanced magnetic forces (UMFs) in magnetic gears (MG) were investigated
and a criterion for identifying gear ratios with a minimum UMF was derived. The proposed criterion was assessed by developing a prototype MG in conjunction with the criterion. More specifically, a vibrational analysis was
done on the MG and showed a significant decrease in UMFs and vibrations.
An evaluation of the final MG showed a no-load loss of 180W relative to 2.8 kW rated power. Furthermore, the no-load losses for the MG were reduced by 36.8%, compared to a previous MG prototype. An efficiency of 95% was achieved and a large spectrum of high efficiency operating conditions was obtained.
The measured vs. simulated torque ripple had a difference of 9.5% and a percentage torque ripple of 14.4% was measured, thus indicating an MG
with stable power transmission and low UMF was achieved in the presented research.