High efficiency and high performance motor for energy saving in systems

Author

Sakai, K. ; Hattori, T. ; Takahashi, N. ; Arata, M. ; Tajima, T.

Author_Institution

Rotating Machine Technol. R&D Dept., Toshiba Corp., Yokohama, Japan

Volume

3

fYear

2001

fDate

2001

Firstpage

1413

Abstract

Recently, increasing importance has been placed on energy saving in various systems. This has created a need for a motor with high efficiency that is capable of operation over a wide range of speeds. The authors have developed a novel permanent magnet reluctance motor (PRM) that has permanent magnets embedded in the isotropic rotor to increase the power density and the power factor. The PRM produces reluctance torque and torque by permanent magnet (PM) flux. The reluctance torque is 1 to 1.5 times larger than the PM torque. It is clarified that the PRM operates at a wide variable-speed range (1:5) and at high efficiency (92-97%). With an output power of 8 to 250 kW, the motor is suitable for application to electric vehicles, railway systems and elevator systems

Keywords

energy conservation; magnetic flux; permanent magnet motors; reluctance motors; rotors; torque; 8 to 250 kW; 92 to 97 percent; efficiency; electric vehicles; elevator systems; energy saving motor; isotropic rotor; performance; permanent magnet flux torque; permanent magnet reluctance motor; power density; power factor; railway systems; reluctance torque; wide speed range operation; Electric vehicles; Elevators; Permanent magnet motors; Permanent magnets; Power generation; Rail transportation; Reactive power; Reluctance motors; Rotors; Torque;

fLanguage

English

Publisher

ieee

Conference_Titel

Power Engineering Society Winter Meeting, 2001. IEEE

Conference_Location

Columbus, OH

Print_ISBN

0-7803-6672-7

Type

conf

DOI

10.1109/PESW.2001.917304

Filename

917304