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Title: Forward and reverse control system for induction motors

Abstract

A control system for controlling the direction of rotation of a rotor of an induction motor includes an array of five triacs with one of the triacs applying a current of fixed phase to the windings of the rotor and four of the triacs being switchable to apply either hot ac current or return ac current to the stator windings so as to reverse the phase of current in the stator relative to that of the rotor and thereby reverse the direction of rotation of the rotor. Switching current phase in the stator is accomplished by operating the gates of pairs of the triacs so as to connect either hot ac current or return ac current to the input winding of the stator. 1 fig.

Inventors:
Issue Date:
Research Org.:
Sandia National Labs., Albuquerque, NM (USA)
OSTI Identifier:
6772802
Patent Number(s):
-US-A6096435
Assignee:
SNL; EDB-88-178858
DOE Contract Number:  
AC04-76DP00789
Resource Type:
Patent
Resource Relation:
Other Information: Portions of this document are illegible in microfiche products
Country of Publication:
United States
Language:
English
Subject:
42 ENGINEERING; CONTROL SYSTEMS; DESIGN; ELECTRIC MOTORS; AC SYSTEMS; ELECTRONIC CIRCUITS; INVENTIONS; ENERGY SYSTEMS; MOTORS; POWER SYSTEMS 420200* -- Engineering-- Facilities, Equipment, & Techniques

Citation Formats

Wright, J.T. Forward and reverse control system for induction motors. United States: N. p., 1987. Web.
Wright, J.T. Forward and reverse control system for induction motors. United States.
Wright, J.T. Tue . "Forward and reverse control system for induction motors". United States.
@article{osti_6772802,
title = {Forward and reverse control system for induction motors},
author = {Wright, J.T.},
abstractNote = {A control system for controlling the direction of rotation of a rotor of an induction motor includes an array of five triacs with one of the triacs applying a current of fixed phase to the windings of the rotor and four of the triacs being switchable to apply either hot ac current or return ac current to the stator windings so as to reverse the phase of current in the stator relative to that of the rotor and thereby reverse the direction of rotation of the rotor. Switching current phase in the stator is accomplished by operating the gates of pairs of the triacs so as to connect either hot ac current or return ac current to the input winding of the stator. 1 fig.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1987},
month = {9}
}