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Parallel compensated instantaneous voltage drop power failure countermeasure device and its instantaneous power failure, power failure countermeasures, series-compensated instantaneous voltage drop countermeasure device and its momentary stop countermeasures, and, parallel with autonomous operation function connection type AC-DC converter and the AC-DC conversion method
Parallel compensated instantaneous voltage drop power failure countermeasure device and its instantaneous power failure, power failure countermeasures, series-compensated instantaneous voltage drop countermeasure device and its momentary stop countermeasures, and, parallel with autonomous operation function connection type AC-DC converter and the AC-DC conversion method
PROBLEM TO BE SOLVED: To provide a parallel compensation type voltage sag power failure measure device capable of preventing drop in load voltage and of improving distortions in the load voltage.;SOLUTION: In the parallel compensation type voltage sag power failure measure device 1, an AC switch 5 is paralleled off, in response to voltage sag or power failure occurrence, and a load 8 is fed from an AC/DC converter 6 connected in parallel with through a load transformer 7, the parallel compensation type voltage sag power failure measure device 1 is provided with a control circuit 2 for generating a voltage correction amount that suppresses the magnetic deflection of the load transformer 7 and controlling the converter 6, based on the voltage correction amount.;COPYRIGHT: (C)2008,JPO&INPIT
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