Prime mover starting system and method

Details Prime mover starting system and method Prime mover starting system and method

1987-06-17

1988-05-31

Shoop, Jr., William M.

Prime-mover dynamo plants

Electric control

Starting and generating dynamo

290 38R, F02N 1104

Patent

active

047483377

ABSTRACT:
A starting system for starting a prime mover connected to a generator by a torque link includes an induction motor having a torque rating substantially equal to the minimum torque required to rotate the rotor of the generator from rest to a particular speed within a predetermined time period while the torque link is deactuated, a source of electrical power, contactors for connecting the source of electrical power to the induction motor when the torque link is deactuated to accelerate the generator rotor to the particular speed, a second set of contactors for connecting the source of electrical power to the generator windings once the generator rotor has reached a particular speed to cause the generator to operate as a synchronous motor and a torque link actuator for actuating the torque link once the generators operating as a synchronous motor to bring the prime mover up to starting speed. The usual large magnitude transient developed in the source of electrical power is thus broken down into three transients of lesser magnitude.

REFERENCES:
patent: 3867677 (1975-02-01), Fletcher et al.
patent: 3908130 (1975-09-01), Lafuze
patent: 4093869 (1978-06-01), Hoffmann et al.
patent: 4330743 (1982-05-01), Glennon
patent: 4473752 (1984-09-01), Cronin
patent: 4481459 (1984-11-01), Mehl et al.
patent: 4697090 (1987-09-01), Baker et al.

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