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Title: Method and apparatus for sensorless operation of brushless permanent magnet motors

Abstract

A sensorless method and apparatus for providing commutation timing signals for a brushless permanent magnet motor extracts the third harmonic back-emf of a three-phase stator winding and independently cyclically integrates the positive and negative half-cycles thereof and compares the results to a reference level associated with a desired commutation angle. 23 figs.

Inventors:
Publication Date:
Research Org.:
Midwest Research Institute
Sponsoring Org.:
USDOE, Washington, DC (United States)
OSTI Identifier:
644392
Patent Number(s):
US 5,739,652/A/
Application Number:
PAN: 8-770,862
Assignee:
General Motors Corp., Detroit, MI (United States) PTO; SCA: 320303; PA: EDB-98:093697; SN: 98001993297
DOE Contract Number:  
AC36-83CH10093
Resource Type:
Patent
Resource Relation:
Other Information: PBD: 14 Apr 1998
Country of Publication:
United States
Language:
English
Subject:
32 ENERGY CONSERVATION, CONSUMPTION, AND UTILIZATION; ELECTRIC MOTORS; PERMANENT MAGNETS; CONTROL THEORY; CONTROL SYSTEMS; SWITCHES; TIMING CIRCUITS

Citation Formats

Sriram, T.V. Method and apparatus for sensorless operation of brushless permanent magnet motors. United States: N. p., 1998. Web.
Sriram, T.V. Method and apparatus for sensorless operation of brushless permanent magnet motors. United States.
Sriram, T.V. Tue . "Method and apparatus for sensorless operation of brushless permanent magnet motors". United States.
@article{osti_644392,
title = {Method and apparatus for sensorless operation of brushless permanent magnet motors},
author = {Sriram, T.V.},
abstractNote = {A sensorless method and apparatus for providing commutation timing signals for a brushless permanent magnet motor extracts the third harmonic back-emf of a three-phase stator winding and independently cyclically integrates the positive and negative half-cycles thereof and compares the results to a reference level associated with a desired commutation angle. 23 figs.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1998},
month = {4}
}