JPS5523778A - Protection of controlled rectifier - Google Patents

Protection of controlled rectifier

Info

Publication number
JPS5523778A
JPS5523778A JP9677878A JP9677878A JPS5523778A JP S5523778 A JPS5523778 A JP S5523778A JP 9677878 A JP9677878 A JP 9677878A JP 9677878 A JP9677878 A JP 9677878A JP S5523778 A JPS5523778 A JP S5523778A
Authority
JP
Japan
Prior art keywords
controlled rectifier
failure
commutation
rectifier unit
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
JP9677878A
Other languages
Japanese (ja)
Other versions
JPS5943914B2 (en
Inventor
Hiroshi Ikeda
Tadayuki Kitahara
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.)
Toshiba Corp
Original Assignee
Toshiba Corp
Tokyo Shibaura 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 Toshiba Corp, Tokyo Shibaura Electric Co Ltd filed Critical Toshiba Corp
Priority to JP53096778A priority Critical patent/JPS5943914B2/en
Publication of JPS5523778A publication Critical patent/JPS5523778A/en
Publication of JPS5943914B2 publication Critical patent/JPS5943914B2/en
Expired legal-status Critical Current

Links

Landscapes

  • Rectifiers (AREA)
  • Inverter Devices (AREA)

Abstract

PURPOSE: To smoothly correct the failure in commutation and resume operation, by adding a failure-time turn-on angle setting circuit, an analogue switch and a simple electronic circuit such as a turn-on advancement priority circuit to a conventional system for protection against the failure in cimmutation.
CONSTITUTION: In a main circuit, the DC output voltage of a controlled rectifier unit 3-1 is zero and that of another controlled rectifier unit 3-2 is positive. Since a load current flows through the controlled rectifier unit 3-2 and load 4 and is going to flow from the rectifier unit 3-2 to the other 3-1, the current of the unit 3-1 decreases sharply. The failure in commutation takes place when a commutation margin angle γ=180°-α-u falls below a predetermined value. Since the current flowing through controlled rectifier elements decreases in the commutation overlap angle u, the failure in commutation can be smoothly corrected by reducing the current of the controlled rectifier unit 3-1.
COPYRIGHT: (C)1980,JPO&Japio
JP53096778A 1978-08-09 1978-08-09 Protection method of controlled rectifier Expired JPS5943914B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP53096778A JPS5943914B2 (en) 1978-08-09 1978-08-09 Protection method of controlled rectifier

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP53096778A JPS5943914B2 (en) 1978-08-09 1978-08-09 Protection method of controlled rectifier

Publications (2)

Publication Number Publication Date
JPS5523778A true JPS5523778A (en) 1980-02-20
JPS5943914B2 JPS5943914B2 (en) 1984-10-25

Family

ID=14174085

Family Applications (1)

Application Number Title Priority Date Filing Date
JP53096778A Expired JPS5943914B2 (en) 1978-08-09 1978-08-09 Protection method of controlled rectifier

Country Status (1)

Country Link
JP (1) JPS5943914B2 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58120541A (en) * 1981-12-24 1983-07-18 ピ−ピ−ジ−・インダストリ−ズ・インコ−ポレ−テツド Aqueous sizing agent composition for glass fiber and sizing agent treated glass fiber for thermoplastic reinforcing material
JPS58120542A (en) * 1981-12-24 1983-07-18 ピ−ピ−ジ−・インダストリ−ズ・インコ−ポレ−テツド Aqueous sizing agent composition and glass fiber for thermocuring polymer reinforcing material prepared by using said composition
US4969765A (en) * 1984-12-29 1990-11-13 Ogawa Chemical Industries Ltd. Mechanical marking pen

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01157306U (en) * 1988-04-19 1989-10-30
JPH04314008A (en) * 1991-04-12 1992-11-05 Fujikura Ltd Optical fiber cable and multiple integrated connector for the same
JPH0664213U (en) * 1993-02-17 1994-09-09 日本電信電話株式会社 Optical connector ferrule

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58120541A (en) * 1981-12-24 1983-07-18 ピ−ピ−ジ−・インダストリ−ズ・インコ−ポレ−テツド Aqueous sizing agent composition for glass fiber and sizing agent treated glass fiber for thermoplastic reinforcing material
JPS58120542A (en) * 1981-12-24 1983-07-18 ピ−ピ−ジ−・インダストリ−ズ・インコ−ポレ−テツド Aqueous sizing agent composition and glass fiber for thermocuring polymer reinforcing material prepared by using said composition
JPS6227015B2 (en) * 1981-12-24 1987-06-11 Ppg Industries Inc
JPS6257586B2 (en) * 1981-12-24 1987-12-01 Ppg Industries Inc
US4969765A (en) * 1984-12-29 1990-11-13 Ogawa Chemical Industries Ltd. Mechanical marking pen

Also Published As

Publication number Publication date
JPS5943914B2 (en) 1984-10-25

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