In the first part of this thesis, analysis of magnetic gears which includes operation analysis and loss analysis is introduced. With these... Show moreIn the first part of this thesis, analysis of magnetic gears which includes operation analysis and loss analysis is introduced. With these analysis, the behavior of magnetic gears are deeply studied for their advantages and disadvantages. Their performance in terms of torque transfer, speed transfer, and the loss are the main focus. With different properties setting for magnetic gear, the influence of these properties to the final performance are also studied. By comparing results from different simulation software and different methods, the results are analyzed more accuracy and detailed. For loss analysis, FFT are utilized for harmonics analysis. This analysis was done by Matlab. All these analysis processes and results lead to the next part of this thesis which is optimization for magnetic gear. The second portion of this thesis focuses on core loss reduction in magnetic gears. Pole shaping similar to what is used in electric machines to reduce electromagnetic torque ripple is introduced to attempt to reduce higher order harmonic flux components in the magnetic gears without reducing power density. In this part, lots of simulation shows the work analysis of magnetic gear to verify the working principle and optimizations results. Large ripple problems of magnetic gear are also found during this part. M.S. in Electrical Engineering, December 2015 Show less
