JPH03253222A - Detecting method for output short-circuit of voltage type inverter - Google Patents

Detecting method for output short-circuit of voltage type inverter

Info

Publication number
JPH03253222A
JPH03253222A JP5155490A JP5155490A JPH03253222A JP H03253222 A JPH03253222 A JP H03253222A JP 5155490 A JP5155490 A JP 5155490A JP 5155490 A JP5155490 A JP 5155490A JP H03253222 A JPH03253222 A JP H03253222A
Authority
JP
Japan
Prior art keywords
circuit
short
detecting
inverter
detection current
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
JP5155490A
Other languages
Japanese (ja)
Inventor
Kiyoaki Sasagawa
Hiroshi Miki
Original Assignee
Fuji Electric Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Fuji Electric Co Ltd filed Critical Fuji Electric Co Ltd
Priority to JP5155490A priority Critical patent/JPH03253222A/en
Publication of JPH03253222A publication Critical patent/JPH03253222A/en
Granted legal-status Critical Current

Links

Abstract

PURPOSE: To effectively detect an output short-circuit and to protect a main circuit element by conducting a specific self-arc-extinguishing element of upper and lower arms of a main circuit, feeding a short-circuit detection current to the output side of an inverter, and detecting the short-circuit of the inverter according to the magnitude of the current.
CONSTITUTION: A short-circuit detection current flowing to a short-circuit detection current path b' flows the path b' only during a period in which pulses are applied to the elements of both upper and lower arms of the pulses of phases (e.g. a period in which pulses are applied to elements 11a, 11e, 11f). According to the path b', the detection current always flows to CTs 13, 14 of the output side of a main circuit 10. Accordingly, the short-circuit of the inverter can be effectively detected.
COPYRIGHT: (C)1991,JPO&Japio
JP5155490A 1990-03-01 1990-03-01 Detecting method for output short-circuit of voltage type inverter Granted JPH03253222A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP5155490A JPH03253222A (en) 1990-03-01 1990-03-01 Detecting method for output short-circuit of voltage type inverter

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP5155490A JPH03253222A (en) 1990-03-01 1990-03-01 Detecting method for output short-circuit of voltage type inverter

Publications (1)

Publication Number Publication Date
JPH03253222A true JPH03253222A (en) 1991-11-12

Family

ID=12890221

Family Applications (1)

Application Number Title Priority Date Filing Date
JP5155490A Granted JPH03253222A (en) 1990-03-01 1990-03-01 Detecting method for output short-circuit of voltage type inverter

Country Status (1)

Country Link
JP (1) JPH03253222A (en)

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