Electronic control for switching variable speed/variable voltage

Details Electronic control for switching variable speed/variable voltage Electronic control for switching variable speed/variable voltage

1979-06-25

1981-05-19

Hickey, Robert J.

Electricity: single generator systems

Combined control of generating means and load circuit

Including load circuit-making and breaking

307 10R, 361 21, 322 94, B62D 6304, H02J 100, H02J 300

Patent

active

042687870

ABSTRACT:
An adjustable speed propulsion engine for a boat also drives an electric generator which supplies electric power to an electric load circuit on the boat. A solid state electronic control circuit senses when generator voltage departs from a voltage "window" or range defined by preselected low and high voltages (as a result of a departure in engine speed from a cruise speed range to some lower or high speed) and operates a contactor to disconnect the generator from the load circuit to prevent low or high voltage damage to electrical equipment on board. The electronic control circuit operates the contactor to reconnect the generator to the load circuit only when generator voltage rises to a preselected initial turn-on voltage which is above the preselected low voltage but below the normal rated voltage of the generator. The electronic control circuit includes time delay means to prevent a transient low voltage condition ("flicker") from causing disconnection of the generator from the load circuit.

REFERENCES:
patent: 3475061 (1969-10-01), Steinkamp et al.
patent: 3585483 (1971-06-01), Kawai
patent: 3868559 (1975-02-01), Hill et al.
patent: 4088940 (1978-05-01), Ciarniello et al.
patent: 4121146 (1978-10-01), Hill

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