Solid state motor starter

Details Solid state motor starter Solid state motor starter

1989-07-19

1990-07-24

Tolin, Gerald P.

Electricity: electrical systems and devices

Electrostatic capacitors

Fixed capacitor

363141, 357 81, H05K 720

Patent

active

049438905

ABSTRACT:
A solid state motor starter assembly having controlled semiconductors mounted between heat sink members. Electrical power to the assembly can be connected an disconnected by an electrically operated solenoid that actuates a movable contact into engagement with a stationary contact mounted on the incoming heat sink. To reduce the heat generated in the semiconductor device during steady state full voltage operation, a shunting current path is established between the adjacent heat sinks by an electrically operated solenoid which moves a movable contact bar to engage stationary contact surfaces mounted directly on the heat sinks. Electrically joining the incoming line heat sink to the outgoing heat sink provides a low resistance parallel current path around the semiconductor thereby reducing the heat generated in the assembly during full voltage operation. The above contacts and solenoids can be directly mounted to a heat sink assembly thereby providing the benefits of unitized construction.

REFERENCES:
patent: 3896480 (1975-07-01), Harnden, Jr.
patent: 4042860 (1977-08-01), Woods et al.
patent: 4128870 (1978-12-01), Knobloch et al.
patent: 4137490 (1979-01-01), Brozoski
patent: 4205434 (1980-06-01), Brozoski
patent: 4224663 (1980-09-01), Maiese
patent: 4243894 (1981-01-01), Kuntner
patent: 4672248 (1987-06-01), Heyne et al.
patent: 4683515 (1987-07-01), Beihoff
patent: 4712030 (1987-12-01), Lakin et al.
patent: 4809153 (1989-02-01), Bremer et al.

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