Overview on Permanent Magnet Motor Trends and Developments
Vasileios I. Vlachou,
Georgios K. Sakkas,
Fotios P. Xintaropoulos,
Maria Sofia C. Pechlivanidou,
Themistoklis D. Kefalas,
Marina A. Tsili,
Antonios G. Kladas
Affiliations
Vasileios I. Vlachou
Laboratory of Electrical Machines and Power Electronics, School of Electrical and Computer Engineering, National Technical University of Athens, 15780 Athens, Greece
Georgios K. Sakkas
Laboratory of Electrical Machines and Power Electronics, School of Electrical and Computer Engineering, National Technical University of Athens, 15780 Athens, Greece
Fotios P. Xintaropoulos
Laboratory of Electrical Machines and Power Electronics, School of Electrical and Computer Engineering, National Technical University of Athens, 15780 Athens, Greece
Maria Sofia C. Pechlivanidou
Laboratory of Electrical Machines and Power Electronics, School of Electrical and Computer Engineering, National Technical University of Athens, 15780 Athens, Greece
Themistoklis D. Kefalas
Hellenic Electricity Distribution Network Operator HEDNO S.A., 10434 Athens, Greece
Laboratory of Electrical Machines and Power Electronics, School of Electrical and Computer Engineering, National Technical University of Athens, 15780 Athens, Greece
The extreme environmental issues and the resulting need to save energy have turned attention to the electrification of energy applications. One of the key components involved in energy efficiency improvements is the appropriate conception and manufacturing of electric machines. This paper overviews the electromagnetic analysis governing the behavior of permanent magnets that enable substantial efficiency gains in recent electric machine developments. Particular emphasis is given to modeling the properties and losses developed in permanent magnets in emerging high speed applications. In addition, the investigation of properties and harmonic losses related to ferromagnetic materials constituting the machine magnetic circuits are equally analyzed and discussed. The experimental validation of the implemented methodologies and developed models with respect to the obtained precision is reported. The introduction of mixed numerical techniques based on the finite element method intended to appropriately represent the different physical phenomena encountered is outlined and discussed. Finally, fast and accurate simulation techniques including aggregated lumped parameter models considering harmonic losses associated with inverter supplies are discussed.
