JPS62260564A - Protective circuit for damping resistor of inverter - Google Patents

Protective circuit for damping resistor of inverter

Info

Publication number
JPS62260564A
JPS62260564A JP61099378A JP9937886A JPS62260564A JP S62260564 A JPS62260564 A JP S62260564A JP 61099378 A JP61099378 A JP 61099378A JP 9937886 A JP9937886 A JP 9937886A JP S62260564 A JPS62260564 A JP S62260564A
Authority
JP
Japan
Prior art keywords
resistor
damping
conduction
damping resistor
switching element
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
JP61099378A
Other languages
Japanese (ja)
Inventor
Hiroaki Okaji
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 JP61099378A priority Critical patent/JPS62260564A/en
Publication of JPS62260564A publication Critical patent/JPS62260564A/en
Pending legal-status Critical Current

Links

Abstract

PURPOSE: To prevent the abnormal overheat of a damping resistor positively by detecting the abnormal conduction of a switching element connected in series with the damping resistor and stopping the operation of an inverter.
CONSTITUTION: An inverter has a smoothing capacitor 3 smoothing an output from a rectifier circuit 2 and an inversion circuit 4, and supplies a motor 5 as load with an AC output. A damping resistor 6, a switching element 7 connected in series with the damping resistor and a damping control circuit 8 are mounted, and a voltage over-rise by regenerative energy on the deceleration of the motor is inhibited. A photo-coupler 9, a limiting resistor 10 for primary side currents and a load resistor 11 are fitted as conduction detection means to the damping resistor 6 at that time. Accordingly, when regenerative energy is consumed by the control resistor 6, the actual conduction of the switching element 7 and the state of the actual load of the damping resistor 6 are monitored by the damping control circuit 8, and the conduction of the switching element 7 is inhibited when conduction more than a specified value continues.
COPYRIGHT: (C)1987,JPO&Japio
JP61099378A 1986-05-01 1986-05-01 Protective circuit for damping resistor of inverter Pending JPS62260564A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP61099378A JPS62260564A (en) 1986-05-01 1986-05-01 Protective circuit for damping resistor of inverter

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP61099378A JPS62260564A (en) 1986-05-01 1986-05-01 Protective circuit for damping resistor of inverter

Publications (1)

Publication Number Publication Date
JPS62260564A true JPS62260564A (en) 1987-11-12

Family

ID=14245862

Family Applications (1)

Application Number Title Priority Date Filing Date
JP61099378A Pending JPS62260564A (en) 1986-05-01 1986-05-01 Protective circuit for damping resistor of inverter

Country Status (1)

Country Link
JP (1) JPS62260564A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP6340463B1 (en) * 2017-09-26 2018-06-06 高周波熱錬株式会社 Power supply

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP6340463B1 (en) * 2017-09-26 2018-06-06 高周波熱錬株式会社 Power supply
TWI644506B (en) * 2017-09-26 2018-12-11 日商高周波熱錬股份有限公司 Power supply device
JP2019062640A (en) * 2017-09-26 2019-04-18 高周波熱錬株式会社 Power supply device

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