Power converter for converting AC shore power to shipboard use

Details Power converter for converting AC shore power to shipboard use Power converter for converting AC shore power to shipboard use

1997-08-01

1999-07-06

Riley, Shawn

Electric power conversion systems

Current conversion

Including an a.c.-d.c.-a.c. converter

363142, 323256, 323341, H02M 545, H02M 110, G05F 1147, G05B 2402

Patent

active

059204672

ABSTRACT:
A power converter for converting shore power voltage, phase, and frequency for shipboard use includes a variable inductance input transformer that can be connected to the shore power. The primary windings of the transformer have a plurality of taps, and a respective computer-controlled switch is connected between adjacent taps to selectively establish a closed circuit or an open circuit between the taps and thereby configure the primary windings as a low or high voltage "delta" or "wye", as appropriate for the shore power voltage. The output of the input transformer is sent to a variable speed drive, then to an output transformer, and thence to the distribution bus of the ship. A voltage regulator regulates the output voltage of the output transformer. If desired, a phase selector can be provided between the shore power and input transformer to establish the phase characteristics (i.e., single, two-, or three-phase) of the power signal that is output by the input transformer, depending upon the phase characteristics of the shore power that is connected to the input transformer.

REFERENCES:
patent: 4323838 (1982-04-01), Pettigrew
patent: 4591831 (1986-05-01), D'Anci
patent: 4896092 (1990-01-01), Flynn
patent: 5450002 (1995-09-01), Dunk

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