JPS57101573A - Pwm inverter - Google Patents

Pwm inverter

Info

Publication number
JPS57101573A
JPS57101573A JP55175842A JP17584280A JPS57101573A JP S57101573 A JPS57101573 A JP S57101573A JP 55175842 A JP55175842 A JP 55175842A JP 17584280 A JP17584280 A JP 17584280A JP S57101573 A JPS57101573 A JP S57101573A
Authority
JP
Japan
Prior art keywords
current
reactors
spc3
spc1
converters
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
JP55175842A
Other languages
Japanese (ja)
Other versions
JPS6350956B2 (en
Inventor
Nagahiko Nagasaka
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.)
Yaskawa Electric Corp
Original Assignee
Yaskawa Electric Manufacturing 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 Yaskawa Electric Manufacturing Co Ltd filed Critical Yaskawa Electric Manufacturing Co Ltd
Priority to JP55175842A priority Critical patent/JPS57101573A/en
Publication of JPS57101573A publication Critical patent/JPS57101573A/en
Publication of JPS6350956B2 publication Critical patent/JPS6350956B2/ja
Granted legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
    • H02M7/00—Conversion of ac power input into dc power output; Conversion of dc power input into ac power output
    • H02M7/42—Conversion of dc power input into ac power output without possibility of reversal
    • H02M7/44—Conversion of dc power input into ac power output without possibility of reversal by static converters
    • H02M7/48—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
    • H02M7/53—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal
    • H02M7/537—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only, e.g. single switched pulse inverters
    • H02M7/539—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only, e.g. single switched pulse inverters with automatic control of output wave form or frequency
    • H02M7/5395—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only, e.g. single switched pulse inverters with automatic control of output wave form or frequency by pulse-width modulation

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Inverter Devices (AREA)

Abstract

PURPOSE:To employ only one set of protecting circuits in a PWM inverter and to enhance the reliability thereof by annularly connecting controllable power sources via coupling reactors in number corresponding to the number of phases and using the neutral points of the respective reactors as output terminals. CONSTITUTION:DC converters SPC1-SPC3 are annularly connected via coupling reactors L12, L23, L31, the neutral points of the respective coupling reactors are used as 3-phase output terminals U, V, W, and 3-phase motor M is connected via a switch. When the choppers Ch1, Ch2 of the converters SPC1-SPC3 become impossible to be controlled in ON state during its operation, a current circulating the annular circuit increases, allowing a high speed protecting breakder HS to operate to break the defect current, thereby preventing the burnout accident. The defextive current is detected by a current detector CT, but may be detected by Hall element for the magnetic flux of the coupling reactor.
JP55175842A 1980-12-15 1980-12-15 Pwm inverter Granted JPS57101573A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP55175842A JPS57101573A (en) 1980-12-15 1980-12-15 Pwm inverter

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP55175842A JPS57101573A (en) 1980-12-15 1980-12-15 Pwm inverter

Publications (2)

Publication Number Publication Date
JPS57101573A true JPS57101573A (en) 1982-06-24
JPS6350956B2 JPS6350956B2 (en) 1988-10-12

Family

ID=16003165

Family Applications (1)

Application Number Title Priority Date Filing Date
JP55175842A Granted JPS57101573A (en) 1980-12-15 1980-12-15 Pwm inverter

Country Status (1)

Country Link
JP (1) JPS57101573A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0221528A2 (en) * 1985-11-06 1987-05-13 SPS TECHNOLOGIES, Inc. Improvements in or relating to a tightening system and/or a method of tightening
WO2015098146A1 (en) * 2013-12-24 2015-07-02 三菱電機株式会社 Power conversion device

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0573043U (en) * 1992-03-12 1993-10-05 小松ゼノア株式会社 Power shovel piping equipment

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0221528A2 (en) * 1985-11-06 1987-05-13 SPS TECHNOLOGIES, Inc. Improvements in or relating to a tightening system and/or a method of tightening
WO2015098146A1 (en) * 2013-12-24 2015-07-02 三菱電機株式会社 Power conversion device
JPWO2015098146A1 (en) * 2013-12-24 2017-03-23 三菱電機株式会社 Power converter

Also Published As

Publication number Publication date
JPS6350956B2 (en) 1988-10-12

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