JPS54157222A - Trouble detecting circuit of current-type inverter - Google Patents

Trouble detecting circuit of current-type inverter

Info

Publication number
JPS54157222A
JPS54157222A JP6695778A JP6695778A JPS54157222A JP S54157222 A JPS54157222 A JP S54157222A JP 6695778 A JP6695778 A JP 6695778A JP 6695778 A JP6695778 A JP 6695778A JP S54157222 A JPS54157222 A JP S54157222A
Authority
JP
Japan
Prior art keywords
side voltage
inverter circuit
current
detecting circuit
failure
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.)
Pending
Application number
JP6695778A
Other languages
Japanese (ja)
Inventor
Hideo Kuwabara
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Mitsubishi Electric Corp
Original Assignee
Mitsubishi Electric Corp
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 Mitsubishi Electric Corp filed Critical Mitsubishi Electric Corp
Priority to JP6695778A priority Critical patent/JPS54157222A/en
Publication of JPS54157222A publication Critical patent/JPS54157222A/en
Pending legal-status Critical Current

Links

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  • Inverter Devices (AREA)

Abstract

PURPOSE: To detect a failure in the transistor element of an inverter circuit by detecting the presence or absence of a change by comparing the DC side voltage and the AC side voltage of the inverter circuit and by taking their difference or ratio.
CONSTITUTION: When a thyristor element of inverter circuit 3 is broken down, or when there is a commutation failure, the waveform of voltage eo detected at AC side voltage detector 12 partly differs from the waveform of ed at DC side voltage dector 11 (A and D in the drawing). Consequency, their mean values are greatly different, and a big difference output appears in comparator 10. For this reason, it is possible to send out a failure detection signal by operating output relay 17.
COPYRIGHT: (C)1979,JPO&Japio
JP6695778A 1978-06-02 1978-06-02 Trouble detecting circuit of current-type inverter Pending JPS54157222A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP6695778A JPS54157222A (en) 1978-06-02 1978-06-02 Trouble detecting circuit of current-type inverter

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP6695778A JPS54157222A (en) 1978-06-02 1978-06-02 Trouble detecting circuit of current-type inverter

Publications (1)

Publication Number Publication Date
JPS54157222A true JPS54157222A (en) 1979-12-12

Family

ID=13331003

Family Applications (1)

Application Number Title Priority Date Filing Date
JP6695778A Pending JPS54157222A (en) 1978-06-02 1978-06-02 Trouble detecting circuit of current-type inverter

Country Status (1)

Country Link
JP (1) JPS54157222A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007244003A (en) * 2006-02-09 2007-09-20 Kitashiba Electric Co Ltd Induction heater with commutation failure detection
JP2009032498A (en) * 2007-07-26 2009-02-12 Kitashiba Electric Co Ltd Induction heating device having automatic application control circuit responding to closely arranged heating coil
JP2009032495A (en) * 2007-07-26 2009-02-12 Kitashiba Electric Co Ltd Induction heating device capable of controlling power on every heating coil

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007244003A (en) * 2006-02-09 2007-09-20 Kitashiba Electric Co Ltd Induction heater with commutation failure detection
JP2009032498A (en) * 2007-07-26 2009-02-12 Kitashiba Electric Co Ltd Induction heating device having automatic application control circuit responding to closely arranged heating coil
JP2009032495A (en) * 2007-07-26 2009-02-12 Kitashiba Electric Co Ltd Induction heating device capable of controlling power on every heating coil

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