US 12,137,543 B2
Power conversion apparatus
Yukio Nakashima, Tokyo (JP)
Assigned to Mitsubishi Electric Corporation, Tokyo (JP)
Appl. No. 17/627,305
Filed by Mitsubishi Electric Corporation, Tokyo (JP)
PCT Filed Jul. 29, 2019, PCT No. PCT/JP2019/029664
§ 371(c)(1), (2) Date Jan. 14, 2022,
PCT Pub. No. WO2021/019642, PCT Pub. Date Feb. 4, 2021.
Prior Publication US 2022/0272877 A1, Aug. 25, 2022
Int. Cl. H05K 7/20 (2006.01); H02M 1/084 (2006.01); H02M 5/458 (2006.01)
CPC H05K 7/20909 (2013.01) [H02M 1/084 (2013.01); H02M 5/458 (2013.01)] 9 Claims
OG exemplary drawing
 
1. A power conversion apparatus comprising:
a converter main circuit to convert AC power into DC power;
an inverter main circuit to convert, into AC power, the DC power obtained by conversion by the converter main circuit; and
a cooler to cool first switching elements included in the inverter main circuit and second switching elements included in the converter main circuit, the cooler being used as a common cooler, wherein
the first switching elements are modularized in units of one or more elements to form first modules,
the second switching elements are modularized in units of one or more elements to form second modules,
the first and second modules are mounted on a first surface that is a module mounting surface of a base of the cooler,
the first modules are arranged in a first direction on the first surface,
the second modules are arranged such that two or more second modules are continuously arranged in a second direction orthogonal to the first direction on the first surface,
the first modules are arranged in a first section of the first surface,
the second modules are arranged in at least a second section and a fourth section, and a third section is disposed between the second section and the fourth section, and
the second, third, and fourth sections are adjacent to the first section along the second direction, and are arranged in order of the second, third, and fourth sections along the first direction.