Title:
電力変換装置
Document Type and Number:
Japanese Patent JP7334517
Kind Code:
B2
Abstract:
To obtain a power conversion device capable of improving detection accuracy of a stained state.SOLUTION: A power conversion device comprises: a frame; a first resistor provided in the frame; a second resistor 42 that is provided in the frame, is serially connected to the first resistor, and has a value of resistance smaller than that of the first resistor; a voltage detection unit for detecting voltage between both ends of the second resistor 42; and a stain determination unit for determining a stained state in the frame on the basis of a voltage value detected by the voltage detection unit. The second resistor 42 comprises: a pair of first terminal 50 and second terminal 51 that are connected with the voltage detection unit; a first conductive plate 53 that is a tabular conductive body connected to the first terminal 50; a second conductive plate 54 that is a tabular conductive body connected to the second terminal 51 and disposed so as to be apart from the first conductive plate 53 by a fixed distance; and a resistive element 55 extending from the first conductive plate 53 to the second conductive plate 54 in a state in which the first conductive plate 53's plate surface and the second conductive plate 54's plate surface face each other.SELECTED DRAWING: Figure 4
Inventors:
Jiro Toyosaki
Yoshiaki Enami
Yoshiaki Enami
Application Number:
JP2019133015A
Publication Date:
August 29, 2023
Filing Date:
July 18, 2019
Export Citation:
Assignee:
Fuji Electric Co., Ltd.
International Classes:
H02M7/48; G01R31/50; H01C3/00; H02H3/00
Domestic Patent References:
| JP2009027879A | ||||
| JP2008301684A | ||||
| JP58032601U | ||||
| JP2015021916A |
Attorney, Agent or Firm:
Tadashige Ito
Tadahiko Ito
Tadahiko Ito