POWER CONVERTER WITH NOISE-CURRENT REDUCTION CAPACITOR

摘要

In a power converter, an external terminal, a case, and capacitors are arranged to provide a conductive loop. The conductive loop defines thereinside a first region through which magnetic flux of an AC magnetic field penetrates, and a second region through which the magnetic flux penetrates. A magnetic-flux shielding member partly shields at least one of the first region and the second region from penetration of the magnetic flux of the AC magnetic field to adjust at least one of an amount of the magnetic flux penetrating through one of the first region and the second region, and an amount of the magnetic flux penetrating through the other thereof.

主权项

1. A power converter comprising:
a power converter circuit having a portion that generates an AC magnetic field having a magnetic flux and configured to perform power conversion of input power into output power; a case that is grounded, at least part of the power converter circuit being installed in the case; an external terminal electrically connected to the power converter circuit for connection of an external device to the power converter circuit; a plurality of capacitors located electrically connected to the external terminal and to the case, the external terminal, the case, and the plurality of capacitors being arranged to provide a conductive loop defining thereinside: a first region through which the magnetic flux of the AC magnetic field penetrates from one of a first side and a second side of the conductive loop to the other of the first side and the second side of the conductive loop; and a second region through which the magnetic flux of the AC magnetic field penetrates from the other of the first side and the second side to the one of the first side and the second side of the conductive loop, the first side being a near side of the conductive loop closer to the portion of the power converter circuit, the second side being a far side of the conductive loop far from the portion of the power converter circuit; and a magnetic-flux shielding member configured to partly shield at least one of the first region and the second region from penetration of the magnetic flux of the AC magnetic field to adjust at least one of: an amount of the magnetic flux penetrating through one of the first region and the second region; and an amount of the magnetic flux penetrating through the other thereof.