MARTIN SIMON
Engineers in Erie, PA

4348620, Sep 7, 1982

Sep 15, 1980

6/187126

Martin Simon - Erie PA

General Electric Company - Erie PA

H02K 2300

318154

A traction vehicle propulsion system comprises a d-c motor and an excitation generator for separately exciting the motor field. Current in the field winding of the excitation generator is normally controlled by a control circuit which is arranged to prevent vehicle misdirection due to control circuit failure modes wherein normal excitation current is not supplied. The control circuit comprises means responsive to an acceleration command signal for temporarily removing the field winding from the normal control circuit and for placing it instead in a biasing circuit comprising low impedance paths to the respective terminals of a direct voltage source, thereby presetting the magnetic field of the field winding in the proper direction to prevent vehicle misdirection upon acceleration from rest.

RE29579, Mar 14, 1978

Aug 20, 1976

5/716325

Martin Simon - Erie PA

General Electric Co. - Erie PA

H02J 904

307 68

An auxiliary power supply system for providing controlled alternating current in an electric motor traction vehicle driven by a prime mover through a traction alternator. During normal traction operation the prime mover operates at a high constant rotational speed to directly drive an auxiliary alternator which provides the auxiliary power, while in standby operation the prime mover operates at a reduced constant rotational speed and the auxiliary power is obtained from the traction alternator at the desired frequency and voltage.