| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a small noise filter capable of suppressing increase in noise current that leaks to the outside of a power converter. <P>SOLUTION: A normal mode reactor installed on the input side or output side of a power converter is provided with an auxiliary winding. The auxiliary windings are connected in series so that an electromotive force caused by a normal mode current is canceled and that caused by a common mode current is added, with both ends being terminated with an impedance circuit. Consequently, the LC resonance generated between the normal mode reactor and a grounding capacitor is suppressed, to suppress increase in the common mode current that leaks to the outside of the power converter. <P>COPYRIGHT: (C)2012,JPO&INPIT |
