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Title: Three phase AC motor controller

Abstract

A motor controller for a three phase AC motor (10) which is adapted to operate bidirectionally from signals received either from a computer (30) or a manual control (32). The controller is comprised of digital logic circuit means which implement a forward and reverse command signal channel (27, 29) for the application of power through the forward and reverse power switching relays (16, 18, 20, 22). The digital logic elements are cross coupled to prevent activation of both channels simultaneously and each includes a plugging circuit (65, 67) for stopping the motor upon the removal of control signal applied to one of the two channels (27, 29) for a direction of rotation desired. Each plugging circuit (65, 67) includes a one-shot pulse signal generator (88, 102) which outputs a single pulse signal of predetermined pulsewidth which is adapted to inhibit further operation of the application of power in the channel which is being activated and to apply a reversal command signal to the other channel which provides a reversed phase application of power to the motor for a period defined by the pulse-width output of the one-shot signal generator to plug the motor (10) which will then be inoperative untilmore » another rotational command signal is applied to either of the two channels.« less

Inventors:
 [1];  [2];  [3]
  1. (Elizabeth, PA)
  2. (Bethel Park, PA)
  3. (South Huntington Township, Westmoreland County, PA)
Issue Date:
Research Org.:
Sandia National Laboratories (SNL), Albuquerque, NM, and Livermore, CA
OSTI Identifier:
864926
Patent Number(s):
4438382
Application Number:
06/279,501
Assignee:
United States of America as represented by Department of Energy (Washington, DC) SNL
DOE Contract Number:  
83-2729D
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
phase; motor; controller; 10; adapted; operate; bidirectionally; signals; received; computer; 30; manual; control; 32; comprised; digital; logic; circuit; means; implement; forward; reverse; command; signal; channel; 27; 29; application; power; switching; relays; 16; 18; 20; 22; elements; coupled; prevent; activation; channels; simultaneously; plugging; 65; 67; stopping; removal; applied; direction; rotation; desired; one-shot; pulse; generator; 88; 102; outputs; single; predetermined; pulsewidth; inhibit; operation; activated; apply; reversal; provides; reversed; period; defined; pulse-width; output; plug; inoperative; rotational; motor controller; power switching; pulse signal; command signal; signal applied; control signal; signal generator; circuit means; digital logic; single pulse; motor control; logic circuit; signals received; logic elements; /318/

Citation Formats

Vuckovich, Michael, Wright, Maynard K., and Burkett, John P. Three phase AC motor controller. United States: N. p., 1984. Web.
Vuckovich, Michael, Wright, Maynard K., & Burkett, John P. Three phase AC motor controller. United States.
Vuckovich, Michael, Wright, Maynard K., and Burkett, John P. Tue . "Three phase AC motor controller". United States. https://www.osti.gov/servlets/purl/864926.
@article{osti_864926,
title = {Three phase AC motor controller},
author = {Vuckovich, Michael and Wright, Maynard K. and Burkett, John P.},
abstractNote = {A motor controller for a three phase AC motor (10) which is adapted to operate bidirectionally from signals received either from a computer (30) or a manual control (32). The controller is comprised of digital logic circuit means which implement a forward and reverse command signal channel (27, 29) for the application of power through the forward and reverse power switching relays (16, 18, 20, 22). The digital logic elements are cross coupled to prevent activation of both channels simultaneously and each includes a plugging circuit (65, 67) for stopping the motor upon the removal of control signal applied to one of the two channels (27, 29) for a direction of rotation desired. Each plugging circuit (65, 67) includes a one-shot pulse signal generator (88, 102) which outputs a single pulse signal of predetermined pulsewidth which is adapted to inhibit further operation of the application of power in the channel which is being activated and to apply a reversal command signal to the other channel which provides a reversed phase application of power to the motor for a period defined by the pulse-width output of the one-shot signal generator to plug the motor (10) which will then be inoperative until another rotational command signal is applied to either of the two channels.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1984},
month = {3}
}

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