Forward and reverse control system for induction motors

Patent · Tue Sep 15 00:00:00 EDT 1987

OSTI ID:6772802

Wright, J T

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.

• Research Organization: Sandia National Labs., Albuquerque, NM (USA)
• DOE Contract Number: AC04-76DP00789
• Assignee: SNL; EDB-88-178858
• Patent Number(s): PATENTS-US-A6096435
• OSTI ID: 6772802
• Country of Publication: United States
• Language: English

Related Subjects

42 ENGINEERING
420200* -- Engineering-- Facilities
Equipment
& Techniques
AC SYSTEMS
CONTROL SYSTEMS
DESIGN
ELECTRIC MOTORS
ELECTRONIC CIRCUITS
ENERGY SYSTEMS
INVENTIONS
MOTORS
POWER SYSTEMS