| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a magnetic flux control device for effectively reducing a residual magnetic flux of a transformer. <P>SOLUTION: A magnetic flux control device 4 is connected to the secondary side of a transformer 3. When the transformer 3 is stopped, the magnetic flux control device 4 reduces a residual magnetic flux of the transformer 3. The magnetic flux control device 4 comprises an inverter 10 and a controller 11. When the transformer 3 is stopped, the inverter 10 gives an AC voltage which is attenuated with the lapse of time to the secondary side of the transformer 3. <P>COPYRIGHT: (C)2013,JPO&INPIT |
