Login| Sign Up| Help| Contact|

Patent Searching and Data


Title:
SWITCHING MODULE
Document Type and Number:
WIPO Patent Application WO/2020/137237
Kind Code:
A1
Abstract:
In this switching module, a determination unit (303) brings a bidirectional switch (1A) into an open state and a bidirectional switch (1B) into a closed state only during a test period from a first time and then, if the difference absolute value between the voltage values detected by voltmeters (12A, 13A) is less than or equal to a preset first voltage threshold value, determines that the bidirectional switch (1A) is in a short-circuit failure. Alternatively, the determination unit (303) brings the bidirectional switch (1A) into the open state and the bidirectional switch (1B) into the closed state only during the test period from a second time after a period of (n + 1/2) (n is a positive integer) times the preset setting cycle has elapsed from the first time and then, if the difference absolute value between the voltage values detected by the voltmeters (12A, 13A) is less than or equal to the preset first voltage threshold value, determines that the bidirectional switch (1A) is in the short-circuit failure.

Inventors:
NOMURA HIDEAKI (JP)
MORI MICHIYA (JP)
Application Number:
PCT/JP2019/044852
Publication Date:
July 02, 2020
Filing Date:
November 15, 2019
Export Citation:
Click for automatic bibliography generation   Help
Assignee:
MURATA MANUFACTURING CO (JP)
International Classes:
H02M5/293; H02H7/20
Foreign References:
JPH0686480A1994-03-25
JP2003102101A2003-04-04
JPS5022244A1975-03-10
JP2018066678A2018-04-26
JPS63176330A1988-07-20
Attorney, Agent or Firm:
KIMURA Mitsuru (JP)
Download PDF: