Paul M Merlino

US Patent:

47774207, Oct 11, 1988

Filed:

Nov 28, 1986

Appl. No.:

6/936928

Inventors:

Habib Dadpey - Atlanta GA
David J. Shero - South Park Township, Alleghany County PA
Paul J. Merlino - West Newton PA

Assignee:

Westinghouse Electric Corp. - Pittsburgh PA

International Classification:

H02P 318

US Classification:

318758

Abstract:

An AC induction motor is energized by a voltage fed inverter coupled with a DC power source and is controlled in response to a torque request signal that is provided to accelerate or decelerate the motor as desired to maintain a desired torque output. The motor is operated to have each of a power and brake operation below the base speed of the motor and to have each of a power and brake operation above the base speed of the motor.

US Patent:

46971300, Sep 29, 1987

Filed:

Dec 22, 1986

Appl. No.:

6/946159

Inventors:

Habib Dadpey - Atlanta GA
Paul J. Merlino - West Newton PA
David J. Shero - South Park Township, Allegheny County PA

Assignee:

Westinghouse Electric Corp. - Pittsburgh PA

International Classification:

H02P 318

US Classification:

318760

Abstract:

An AC induction motor brake control apparatus and method are provided for energizing the motor with an inverter supplied first voltage and an additional brake circuit supplied second voltage in phase with and additive to the first voltage as required to determine a desired brake torque above base speed operation.