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Title: Sensor-less control of a half-wave rectified brushless synchronous motor

Abstract

The goal of this research is to realize a complete sensorless system which can operate in whole speed range, from standstill to rated speed, using the half-wave rectified brushless synchronous motor the authors proposed as a novel servo motor. An emf with bias frequency is induced in the rotor winding of this motor by the mmf which rotates at synchronous speed and pulsates at bias frequency. The field poles are excited by the field current obtained by rectifying this emf with a diode inserted into the field winding. This motor has simple and robust brushless structure and is maintenance free. This motor also provides them with the torque control operation over the speed range from zero to the rated speed. If there is any displacement between the axis of rotating mmf and the axis of the rotor, the impedance of the field circuit varies. Therefore, the rotor position can be detected only by measuring bias frequency components of armature voltage. This method provides them with the whole sensorless control (position and speed sensorless) over the speed range from zero to the rated speed.

Authors:
; ; ;  [1];
  1. Nagasaki Univ. (Japan). Dept. of Electrical Engineering and Computer Science
Publication Date:
OSTI Identifier:
419487
Report Number(s):
CONF-9510203-
Journal ID: ISSN 0197-2618; TRN: IM9706%%31
Resource Type:
Conference
Resource Relation:
Conference: IEEE/Industrial Application Society conference, Orlando, FL (United States), 8-12 Oct 1995; Other Information: PBD: 1995; Related Information: Is Part Of Conference record of the 1995 IEEE Industry Applications Society, thirtieth IAS annual meeting. Volume 1; PB: 977 p.
Country of Publication:
United States
Language:
English
Subject:
44 INSTRUMENTATION, INCLUDING NUCLEAR AND PARTICLE DETECTORS; ELECTRIC MOTORS; CONTROL; SPACE DEPENDENCE; POSITIONING; SYNCHRONIZATION

Citation Formats

Oyama, Jun, Abe, Takashi, Higuchi, Tsuyoshi, Yamada, Eiji, and Shibahara, Kenji. Sensor-less control of a half-wave rectified brushless synchronous motor. United States: N. p., 1995. Web.
Oyama, Jun, Abe, Takashi, Higuchi, Tsuyoshi, Yamada, Eiji, & Shibahara, Kenji. Sensor-less control of a half-wave rectified brushless synchronous motor. United States.
Oyama, Jun, Abe, Takashi, Higuchi, Tsuyoshi, Yamada, Eiji, and Shibahara, Kenji. Sun . "Sensor-less control of a half-wave rectified brushless synchronous motor". United States.
@article{osti_419487,
title = {Sensor-less control of a half-wave rectified brushless synchronous motor},
author = {Oyama, Jun and Abe, Takashi and Higuchi, Tsuyoshi and Yamada, Eiji and Shibahara, Kenji},
abstractNote = {The goal of this research is to realize a complete sensorless system which can operate in whole speed range, from standstill to rated speed, using the half-wave rectified brushless synchronous motor the authors proposed as a novel servo motor. An emf with bias frequency is induced in the rotor winding of this motor by the mmf which rotates at synchronous speed and pulsates at bias frequency. The field poles are excited by the field current obtained by rectifying this emf with a diode inserted into the field winding. This motor has simple and robust brushless structure and is maintenance free. This motor also provides them with the torque control operation over the speed range from zero to the rated speed. If there is any displacement between the axis of rotating mmf and the axis of the rotor, the impedance of the field circuit varies. Therefore, the rotor position can be detected only by measuring bias frequency components of armature voltage. This method provides them with the whole sensorless control (position and speed sensorless) over the speed range from zero to the rated speed.},
doi = {},
journal = {},
issn = {0197-2618},
number = ,
volume = ,
place = {United States},
year = {1995},
month = {12}
}

Conference:
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