Yuan Zhang with his adviser Dr. Longya Xu, Department of Electrical and Computer Engineering, The Ohio State University The project is to seek an optimized design of a large-diameter outer-rotor PM machine. We report three results for the project: a) the structural model of the surface PM outer-rotor machine, b) the finite element analysis method […]
Advanced Transverse Flux Permanent Magnet Linear Generator for Ocean Wave Energy Extraction
Joe Prudell, David Elwood, Ken Rhinefrank, Ted Brekken, Annette von Jouanne, et al., Oregon State University Grainger CEME funding has contributed to the research and development of a permanent magnet synchronous tubular linear generator (PMSTLG), as shown in Figure 6. The purpose of this PMSTLG is to directly convert the linear motion of ocean waves […]
Mathematical Field Computation as an Analytical Tool for Electric Machines
Tim O’Connell with adviser Philip T. Krein We have continued to investigate alternative mathematical field computation methods for electric machines diverging from the well-known finite element method. In particular, Schwarz-Christoffel (SC) mapping theory has been implemented using the SC Toolbox for Matlab® to conduct electric machine simulation studies. The long-term goal of this project is […]
Knowledge Based Permanent Magnet Machine Design – Literature Survey
Ari Zachas, Yao Duan, Ronald G. Harley, and Thomas G. Habetler at Georgia Institute of Technology, Atlanta, GA This report is a summary of a literature evaluation completed from 1 July, 2006, to 30 June, 2007, under a grant from the Grainger Center for Electrical Machinery and Electromechanics. The use of permanent magnet (PM) machines […]
Induction Machine Performance Improvements – Design-Oriented Approaches
Marco Amrhein with adviser Philip T. Krein New developments in power electronics technology, materials, and changing application requirements are driving advances in permanent-magnet and switched-reluctance machines. But special-purpose induction machines, due to of their low power density and low efficiency, are often not considered, particularly in the traction and aerospace community. Because induction machines need […]