Prime-mover dynamo plants – Starting and generating dynamo
Patent
1992-08-31
1994-02-01
Pellinen, A. D.
Prime-mover dynamo plants
Starting and generating dynamo
290 31, F02N 1104, F02N 1100
Patent
active
052834719
ABSTRACT:
A dynamoelectric device operable as a generator for generating electricity and as a starter motor for starting an associated primary engine in a vehicle. The generator provides 270 Volt DC power during a generating mode while the primary engine is operating and may be used to restart the primary engine in the event that the primary engine is disabled. The dynamoelectric apparatus includes a main generator having a main generator field and a main generator armature. An exciter generator is included which has an exciter armature and an exciter generator field. A rectifier assembly is coupled between the exciter armature and the main generator field. A field shorting switch is coupled to the rectifier assembly and the main generator field for selectively coupling and uncoupling the rectifier assembly during a start-up mode to protect the rectifier assembly against high voltages and voltage spikes. A device for motorizing the primary generator to function as an induction motor includes a secondary engine, a power and current limited auxiliary power unit generator operated by the secondary engine and a starter contactor coupled to the auxiliary power unit generator and the main generator field. The starter contactor selectively couples and uncouples the auxiliary power unit generator and the main generator field for motorizing the main generator to function as an induction motor. The present invention transforms a 270 Volt DC generator driven by the primary engine into a starter motor to start the primary engine by combining it with the secondary engine and the associated auxiliary power unit generator by way of a few relatively simple modifications.
REFERENCES:
patent: 4743776 (1988-05-01), Baehler et al.
patent: 4743777 (1988-05-01), Shilling et al.
patent: 4830412 (1989-05-01), Raad
patent: 5055700 (1991-10-01), Dhyanchand
Eemco/Datron, Inc.
Hoover Robert Lloyd
Pellinen A. D.
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