Axial type flat PM motor with large air gap

Author

Sanada, Masayuki ; Morimoto, Shigeo ; Takeda, Yoji

Author_Institution

Dept. of Electr. & Electron. Syst., Osaka Prefecture Univ., Japan

Volume

2

fYear

1997

fDate

3-6 Aug 1997

Firstpage

643

Abstract

An axial type flat permanent magnet motor (AFPM motor) is used for audio visual equipment, information actuators, etc. However it is limited to a small capacity with a small air gap. In this paper, the characteristics of the AFPM motor with a large air gap to protect and/or separate between the rotor and the stator for new applications are examined. The tested motor has an 8 mm air gap length and a 170 W output capacity. Maximum efficiency of the tested motor is about 80%, and if the air gap length is spread to 12 mm, the tested motor keeps 66% efficiency. Moreover, it is shown that the steady-state characteristics of the AFPM motor driven by a 6-step inverter can be estimated using d-q coordinates modeling

Keywords

machine testing; machine theory; permanent magnet motors; rotors; stators; 12 mm; 170 W; 66 percent; 8 mm; 80 percent; air gap length; axial-type flat permanent magnet motor; d-q coordinates modeling; large air gap; motor characteristics; output capacity; rotor; six-step inverter; stator; steady-state characteristics; Equations; Magnetic flux; Permanent magnet motors; Permanent magnets; Pulse width modulation inverters; Reluctance motors; Steady-state; Testing; Torque; Voltage control;

fLanguage

English

Publisher

ieee

Conference_Titel

Power Conversion Conference - Nagaoka 1997., Proceedings of the

Conference_Location

Nagaoka

Print_ISBN

0-7803-3823-5

Type

conf

DOI

10.1109/PCCON.1997.638263

Filename

638263