JPS55133698A - Thyristor scherbius system - Google Patents

Thyristor scherbius system

Info

Publication number
JPS55133698A
JPS55133698A JP3994879A JP3994879A JPS55133698A JP S55133698 A JPS55133698 A JP S55133698A JP 3994879 A JP3994879 A JP 3994879A JP 3994879 A JP3994879 A JP 3994879A JP S55133698 A JPS55133698 A JP S55133698A
Authority
JP
Japan
Prior art keywords
power
thyristors
occurs
thyristor
under
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
JP3994879A
Other languages
Japanese (ja)
Inventor
Isamu Hayakawa
Shigeru Nakagi
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.)
Shinko Electric Co Ltd
Original Assignee
Shinko 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 Shinko Electric Co Ltd filed Critical Shinko Electric Co Ltd
Priority to JP3994879A priority Critical patent/JPS55133698A/en
Publication of JPS55133698A publication Critical patent/JPS55133698A/en
Pending legal-status Critical Current

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  • Control Of Ac Motors In General (AREA)

Abstract

PURPOSE:To prevent commutation failure under instantaneous power clutter, by using the forward power rectifier diode of a Scherbius unit and a thyristor unit to absorb an abnormal voltage which occurs across the secondary side of an induction motor under power failure. CONSTITUTION:Thyristors 12-14 are connected in parallel with one another between the current inflow line of a power rectifier 4 and the respective phases of a secondary AC circuit. Under power clutter such as phase disappearance, the thyristors 12-14 are fired by a detection signal from a power failure detector or the like to form a short circuit between the thyristors 12-14 and the current inflow side diode 4b of the power rectifier 4 to immediately absorb an abnormal output which occurs on the secondary side of a motor.
JP3994879A 1979-04-02 1979-04-02 Thyristor scherbius system Pending JPS55133698A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP3994879A JPS55133698A (en) 1979-04-02 1979-04-02 Thyristor scherbius system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP3994879A JPS55133698A (en) 1979-04-02 1979-04-02 Thyristor scherbius system

Publications (1)

Publication Number Publication Date
JPS55133698A true JPS55133698A (en) 1980-10-17

Family

ID=12567173

Family Applications (1)

Application Number Title Priority Date Filing Date
JP3994879A Pending JPS55133698A (en) 1979-04-02 1979-04-02 Thyristor scherbius system

Country Status (1)

Country Link
JP (1) JPS55133698A (en)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS50143019A (en) * 1974-05-08 1975-11-18
JPS53123853A (en) * 1977-04-05 1978-10-28 Mitsubishi Electric Corp Protective equipment for static scherbius eqipment
JPS5413917A (en) * 1977-07-04 1979-02-01 Hitachi Ltd Secondary exciter for induction motor

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS50143019A (en) * 1974-05-08 1975-11-18
JPS53123853A (en) * 1977-04-05 1978-10-28 Mitsubishi Electric Corp Protective equipment for static scherbius eqipment
JPS5413917A (en) * 1977-07-04 1979-02-01 Hitachi Ltd Secondary exciter for induction motor

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