Title:
ABNORMALITY DIAGNOSIS SYSTEM AND ABNORMALITY DIAGNOSIS METHOD
Document Type and Number:
WIPO Patent Application WO/2021/005662
Kind Code:
A1
Abstract:
An abnormality diagnosis system that comprises: an inverter (1-1) that includes a logic circuit (7-1) that controls an electrical circuit that converts power, a first output terminal from which signals are outputted, a first input terminal into which signals are inputted, and a communication terminal (8-1); and an inverter (1-2) that includes a logic circuit (7-2) that controls an electrical circuit that converts power, a second output terminal from which signals are outputted, a second input terminal into which signals are inputted, and a communication terminal (8-2) that is connected to communication terminal (8-1) for communication. Inverter (1-1) and inverter (1-2) are electrically connected to each other. In accordance with an output command that has been transmitted from logic circuit (7-1) via communication terminal (8-1) and communication terminal (8-2), logic circuit (7-2) outputs a signal from the second output terminal into the first input terminal. Logic circuit (7-1) compares the output command and the signal inputted into the first input terminal from the second output terminal and thereby diagnoses abnormality of the second output terminal or the first input terminal.
Inventors:
KONDO ATSUSHI (JP)
Application Number:
PCT/JP2019/026887
Publication Date:
January 14, 2021
Filing Date:
July 05, 2019
Export Citation:
Assignee:
MITSUBISHI ELECTRIC CORP (JP)
International Classes:
H02M7/48; H02M1/00
Foreign References:
| JP2017073875A | 2017-04-13 | |||
| JP2017221058A | 2017-12-14 | |||
| JP2018034676A | 2018-03-08 | |||
| JP2012087720A | 2012-05-10 | |||
| JP3661155B2 | 2005-06-15 |
Attorney, Agent or Firm:
TAKAMURA, Jun (JP)
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