Excessive voltage protector for a variable frequency...

Details Excessive voltage protector for a variable frequency... Excessive voltage protector for a variable frequency...

2005-02-01

2005-02-01

Waks, Joseph (Department: 2834)

Electricity: single generator systems

Automatic control of generator or driving means

Plural conditions

C322S022000, C322S028000, C322S037000

Reexamination Certificate

active

06850043

ABSTRACT:
An excessive voltage protection system for a variable frequency generating system detects single point failures in a generator control unit and prevents excessive voltages at a point of regulation (POR) in the system. The generator control unit is designed to detect failures, such as a loss of three-phase sensing capability, switch failure in the exciter drive circuit, and/or exciter current loop failure. If a failure occurs, the generator control unit stops operation of the exciter drive circuit, preventing the voltage at the POR from rising to undesirable levels.

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