JPS57101572A - Pwm inverter - Google Patents

Pwm inverter

Info

Publication number
JPS57101572A
JPS57101572A JP55175841A JP17584180A JPS57101572A JP S57101572 A JPS57101572 A JP S57101572A JP 55175841 A JP55175841 A JP 55175841A JP 17584180 A JP17584180 A JP 17584180A JP S57101572 A JPS57101572 A JP S57101572A
Authority
JP
Japan
Prior art keywords
reactor
breaker
series
devices
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
JP55175841A
Other languages
Japanese (ja)
Other versions
JPS6350955B2 (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 JP55175841A priority Critical patent/JPS57101572A/en
Publication of JPS57101572A publication Critical patent/JPS57101572A/en
Publication of JPS6350955B2 publication Critical patent/JPS6350955B2/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
    • H02M7/505—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 thyratron or thyristor type requiring extinguishing means
    • H02M7/515—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 thyratron or thyristor type requiring extinguishing means using semiconductor devices only
    • H02M7/521—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 thyratron or thyristor type requiring extinguishing means using semiconductor devices only in a bridge configuration

Landscapes

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

Abstract

PURPOSE:To simplify the construction of a PWM inverter by employing only a set of a high speed breaker and a DC reactor in all inverter device. CONSTITUTION:Basic devices (controlled power source) S1, S6 are connected in series for each two devices, three series circuits thus connected are connected in parallel with each other, a breaker Sw operated by the shortcircuit current and a DC reactor L are connected in series between the terminals X and Y, and with the common connecting points U, V, W of the respective sets of the controllable power sources as output terminals three sets of AC motors M are connected thereto. When the devices S1 and S4, S3 and S6, or S5 and S2 are simultaneously conducted ON due to an erroneous operation, a shortcircuit current flows through the series circuit (protecting circuit) of the reactor L and the breaker Sw. In this case, the DC reactor L serves to delay or suppress the rise of the shortcircuit current, allowing a current detector CT to detect the shortcircuit current in the meantime to detect the defect in advance, thereby controlling the devices S1 to S6 to suppress the current. When it is impossible, the breaker Sw is operated by an electromagnetic device MC to break the series circuit so as to protect it.
JP55175841A 1980-12-15 1980-12-15 Pwm inverter Granted JPS57101572A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP55175841A JPS57101572A (en) 1980-12-15 1980-12-15 Pwm inverter

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP55175841A JPS57101572A (en) 1980-12-15 1980-12-15 Pwm inverter

Publications (2)

Publication Number Publication Date
JPS57101572A true JPS57101572A (en) 1982-06-24
JPS6350955B2 JPS6350955B2 (en) 1988-10-12

Family

ID=16003147

Family Applications (1)

Application Number Title Priority Date Filing Date
JP55175841A Granted JPS57101572A (en) 1980-12-15 1980-12-15 Pwm inverter

Country Status (1)

Country Link
JP (1) JPS57101572A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5971282A (en) * 1982-10-15 1984-04-21 富士電波工機株式会社 Induction heating inverter
JPS5971283A (en) * 1982-10-15 1984-04-21 富士電波工機株式会社 Device for protecting induction heating inverter

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2508874Y2 (en) * 1990-06-20 1996-08-28 株式会社小松製作所 Mounting structure of hydraulically operated valve

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5971282A (en) * 1982-10-15 1984-04-21 富士電波工機株式会社 Induction heating inverter
JPS5971283A (en) * 1982-10-15 1984-04-21 富士電波工機株式会社 Device for protecting induction heating inverter

Also Published As

Publication number Publication date
JPS6350955B2 (en) 1988-10-12

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