Power conversion apparatus

Patent metadata

Field	Value
Publication number	US-12463552-B2
Application number	US-202118559841-A
Country	US
Kind code	B2
Filing date	Jun 9, 2021
Priority date	Jun 9, 2021
Publication date	Nov 4, 2025
Grant date	Nov 4, 2025

Abstract

A power conversion apparatus comprises a plurality of submodules and an insulating structure. The plurality of submodules are aligned in at least one of a first direction and a second direction orthogonal to the first direction. Adjacent two of the submodules are insulated from each other by the insulating structure.

First claim

The invention claimed is:

1 . A power conversion apparatus comprising:
a plurality of submodules; and an insulating structure, the plurality of submodules being aligned in at least one of a first direction and a second direction orthogonal to the first direction, adjacent two of the plurality of submodules being insulated from each other by the insulating structure, the power conversion apparatus further comprising: a plurality of support insulators extending in the second direction and aligned in a plane orthogonal to the second direction; and a first frame disposed on the plurality of support insulators, wherein the insulating structure is disposed on the first frame.

2 . The power conversion apparatus according to claim 1 , wherein
the insulating structure is a plurality of insulating housings, the plurality of insulating housings each include: a first side wall portion and a second side wall spaced from and facing each other; a bottom wall portion contiguous to a lower end of the first side wall portion and a lower end of the second side wall portion; and a top wall portion contiguous to an upper end of the first side wall portion and an upper end of the second side wall portion, the plurality of insulating housings are aligned in at least one of the first direction and the second direction, and the plurality of submodules are each disposed in a space defined by the first side wall portion, the second side wall portion, the bottom wall portion, and the top wall portion.

3 . The power conversion apparatus according to claim 2 , wherein the plurality of insulating housings each further include a back wall portion contiguous to a rear end of the first side wall portion, a rear end of the second side wall portion, a rear end of the bottom wall portion, and a rear end of the top wall portion.

4 . The power conversion apparatus according to claim 1 ,
wherein the insulating structure is at least one insulating rack, the at least one insulating rack each includes a plurality of side wall portions spaced from one another in the first direction and thus aligned, a bottom wall portion contiguous to lower ends of the plurality of side wall portions, and a top wall portion contiguous to upper ends of the plurality of side wall portions, and the plurality of submodules are each disposed in a space defined by adjacent two of the plurality of side wall portions, the bottom wall portion and the top wall portion.

5 . The power conversion apparatus according to claim 4 , further comprising a plurality of second frames, wherein
the at least one insulating rack is a plurality of insulating racks aligned in the second direction, and the plurality of second frames are each disposed between adjacent two of the plurality of insulating racks.

6 . The power conversion apparatus according to claim 5 , wherein
the first frame and one of the plurality of second frames closest to the first frame are fixed to each other, and adjacent two of the plurality of second frames are fixed to each other.

7 . The power conversion apparatus according to claim 4 ,
wherein the at least one insulating rack is a plurality of insulating racks aligned in the second direction, the plurality of insulating racks each further include a back wall portion contiguous to rear ends of the plurality of side wall portions, a rear end of the bottom wall portion, and a rear end of the top wall portion, the plurality of insulating racks include a plurality of first insulating racks and a plurality of second insulating racks aligned in the second direction, and the plurality of first insulating racks have their back wall portions facing those of the plurality of second insulating racks.

8 . A power conversion apparatus comprising:
a plurality of submodules; and an insulating structure, the plurality of submodules being aligned in at least one of a first direction and a second direction orthogonal to the first direction, adjacent two of the plurality of submodules being insulated from each other by the insulating structure, wherein the insulating structure is at least one insulating rack, the at least one insulating rack each includes a plurality of side wall portions spaced from one another in the first direction and thus aligned, a bottom wall portion contiguous to lower ends of the plurality of side wall portions, and a top wall portion contiguous to upper ends of the plurality of side wall portions, and the plurality of submodules are each disposed in a space defined by adjacent two of the plurality of side wall portions, the bottom wall portion and the top wall portion, the power conversion apparatus further comprising a reinforcing member made of an insulating material, wherein the reinforcing member connects the insulating structure to a ceiling portion or a wall surface portion of a building in which the power conversion apparatus is stored.

9 . A power conversion apparatus comprising:
a plurality of submodules; and an insulating structure, the plurality of submodules being aligned in at least one of a first direction and a second direction orthogonal to the first direction, adjacent two of the plurality of submodules being insulated from each other by the insulating structure, wherein the insulating structure is at least one insulating rack, the at least one insulating rack each includes a plurality of side wall portions spaced from one another in the first direction and thus aligned, a bottom wall portion contiguous to lower ends of the plurality of side wall portions, and a top wall portion contiguous to upper ends of the plurality of side wall portions, and the plurality of submodules are each disposed in a space defined by adjacent two of the plurality of side wall portions, the bottom wall portion and the top wall portion, the power conversion apparatus further comprising a suspension support member formed of an insulating material, wherein the suspension support member connects the insulating structure to a ceiling portion or a wall surface portion of a building in which the power conversion apparatus is stored to suspend the power conversion apparatus from the ceiling portion or the wall surface portion of the building.

Assignees

• Mitsubishi Electric Corp

Inventors

• Suzuki Kenta
• Kitamura Toru
• Sadakuni Hitoshi
• Yoshimura Manabu
• Sasahara Ryoko

Classifications

• H02M7/003

  Constructional details, e.g. physical layout, assembly, wiring or busbar connections · CPC title

• H05K7/14325

  for cabinets or racks · CPC title

• H02M7/4835 Primary

  comprising two or more cells, each including a switchable capacitor, the capacitors having a nominal charge voltage which corresponds to a given fraction of the input voltage, and the capacitors being selectively connected in series to determine the instantaneous output voltage · CPC title

• H05K7/14339 Primary

  specially adapted for high voltage operation · CPC title