Direct current magnetic polarization component compensation circ

Details Direct current magnetic polarization component compensation circ Direct current magnetic polarization component compensation circ

1986-10-20

1988-04-19

Beha, Jr., William H.

Electric power conversion systems

Current conversion

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

363 41, 363 56, H02M 5458

Patent

active

047394641

ABSTRACT:
The present invention is directed to supply an AC (alternating current) output having a constant voltage and a constant frequency to a load such as computers. A constant voltage/frequency power supply apparatus is provided which comprises at least a constant voltage/frequency output circuit including a converter, connected between an AC power source and the load, for DC-converting the AC output of this power source, and an inverter for AC-inverting the DC-converted output, a control circuit for controlling the inverter of the output circuit, and further a correction means for deleting as a DC magnetic polarization amount a DC component contained in the AC output of the output circuit, and for deleting a DC magnetic polarization amount from the AC output supplied to the load, based upon the detected DC magnetic polarization amount, whereby a sine wave AC output having a constant voltage/frequency which is not adversely influenced by the DC magnetic polarization is supplied to the load.

REFERENCES:
patent: 3697855 (1972-10-01), Kernich et al.
patent: 4133025 (1979-01-01), Wurzburg
patent: 4506766 (1985-03-01), Watanabe
patent: 4553198 (1985-11-01), Chan et al.

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