Wide speed operation of a sensorless brushless DC motor having an interior permanent magnet rotor

Author

Shinkawa, O. ; Tabata, K. ; Uetake, A. ; Shimoda, T. ; Ogasawara, S. ; Akagi, H.

Author_Institution

Seiko Epson Corp., Tokyo, Japan

fYear

1993

fDate

19-21 April 1993

Firstpage

364

Lastpage

370

Abstract

A PM motor drive system without position sensors has been developed, a so-called sensorless motor. Rare earth permanent magnets are not mounted on the surface of the rotor but buried in the rotor for high speed applications. The wide speed-torque range from 1000 to 5000 r/min at 4 Nm and from 500 to 10,000 r/min at no-load is realized by precisely shifting the phase angle of commutation. The system reduces vibration at starting time to 10%, compared with a conventional system. This paper describes its starting and driving characteristics to verify the validity of the theory.<>

Keywords

DC motors; commutation; electric drives; machine control; permanent magnet motors; position control; rotors; starting; torque control; velocity control; PM motor drive; commutation; high speed applications; interior permanent magnet rotor; machine control; phase angle; position control; sensorless brushless DC motor; speed-torque range; starting; torque control; velocity control; vibration; Brushless DC motors; Brushless motors; DC motors; Detectors; Permanent magnet motors; Phase detection; Reluctance motors; Rotors; Sensorless control; Synchronous motors;

fLanguage

English

Publisher

ieee

Conference_Titel

Power Conversion Conference, 1993. Yokohama 1993., Conference Record of the

Conference_Location

Yokohama, Japan

Print_ISBN

0-7803-0471-3

Type

conf

DOI

10.1109/PCCON.1993.264156

Filename

264156