Method and apparatus for shoot-through detection and accommodati

Details Method and apparatus for shoot-through detection and accommodati Method and apparatus for shoot-through detection and accommodati

1997-02-07

1999-07-27

Ramirez, Nestor

Electricity: single generator systems

Automatic control of generator or driving means

Electrical conditions in circuit other than that of...

318153, 318154, H02H 706

Patent

active

059296100

ABSTRACT:
A shoot-through protection system for an electric power generating system including a synchronous generator, a bridge rectifier coupled to an output of the generator for converting alternating current (AC) from the generator to direct current (DC) at a rectifier output, and at least one inverter coupled to the rectifier output for converting the DC output to a controlled frequency AC output for application to a load. The generator has a separately excited field winding in which the magnitude of field excitation controls the voltage output of the generator. A microprocessor-based controller regulates generator field excitation in a manner to control the DC output of the rectifier. The generator is protected from a shoot-through in the inverter by detecting a sustained voltage drop in the rectifier DC output and reversing generator field excitation in response to such a voltage drop to rapidly drive generator output voltage to substantially zero volts.

REFERENCES:
patent: 3805144 (1974-04-01), McSparran
patent: 5168416 (1992-12-01), Bailey et al.
patent: 5245495 (1993-09-01), Bailey et al.
patent: 5528445 (1996-06-01), Cooke et al.
patent: 5583420 (1996-12-01), Rice et al.

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