Uninterruptible power supply system

Details Uninterruptible power supply system Uninterruptible power supply system

1994-12-14

1996-10-08

Wong, Peter S.

Electric power conversion systems

Current conversion

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

336145, 336212, 307 48, 307 66, H02M 545

Patent

active

055637787

ABSTRACT:
An improved uninterruptible power supply system includes a converter for converting alternating current voltage into a direct current voltage; an inverter for modulating the direct current voltage outputted from a battery or the converter; a first switch for switching the voltage modulated at the inverter; a second switch for switching the alternating voltage inputted via a bypass line; an integrated transformer for increasing or decreasing the output voltages of the first and the second switches, the transformer also acting as a reactor for shaping the output voltage of the first switch; and a condenser for shaping the waveforms of the output voltage of the integrated transformer.

REFERENCES:
patent: 4308495 (1981-12-01), Yasumura
patent: 4860185 (1989-08-01), Brewer et al.
patent: 5334877 (1994-08-01), Mohan et al.
patent: 5353001 (1994-10-01), Meinel et al.

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