JPS56129581A - Inverter - Google Patents

Inverter

Info

Publication number
JPS56129581A
JPS56129581A JP3237180A JP3237180A JPS56129581A JP S56129581 A JPS56129581 A JP S56129581A JP 3237180 A JP3237180 A JP 3237180A JP 3237180 A JP3237180 A JP 3237180A JP S56129581 A JPS56129581 A JP S56129581A
Authority
JP
Japan
Prior art keywords
current reference
commutation
current
load
calculated
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
JP3237180A
Other languages
Japanese (ja)
Inventor
Hiroichiro Tanaka
Yasuhiro Inoue
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 JP3237180A priority Critical patent/JPS56129581A/en
Publication of JPS56129581A publication Critical patent/JPS56129581A/en
Pending 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

Landscapes

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

Abstract

PURPOSE:To securely maintain the required torque and to enable to commutate at light load for the subject inverter by a method wherein a power-factor is varied to increase a load current by bringing it to above the commutation threshold value when the load current dropped below the commutation threshold value. CONSTITUTION:The speed signal wm of a motor 40 sent from a detector 62 and a reference value are matched, and a secondary current reference I2 is calculated by a speed controlling circuit 64. On the other hand, the secondary magnetic flux phi2 of the motor is calculated by a vector computing circuit 67 and a magnetic current reference i0 is calculated by a magnetic flux controlling circuit 69. Then, each current reference I2 and i0 is inputted to a primary current reference generating circuit 70, a primary current reference I1 is established and this current is inputted to a limit controlling circuit 71, thereby enabling to satisfy the torque required by the load and to control the commutation to be performed within the range surrounded by bcd, de and efga as shown in the diagram which will become the area whereon the commutation can be performed.
JP3237180A 1980-03-14 1980-03-14 Inverter Pending JPS56129581A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP3237180A JPS56129581A (en) 1980-03-14 1980-03-14 Inverter

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP3237180A JPS56129581A (en) 1980-03-14 1980-03-14 Inverter

Publications (1)

Publication Number Publication Date
JPS56129581A true JPS56129581A (en) 1981-10-09

Family

ID=12357079

Family Applications (1)

Application Number Title Priority Date Filing Date
JP3237180A Pending JPS56129581A (en) 1980-03-14 1980-03-14 Inverter

Country Status (1)

Country Link
JP (1) JPS56129581A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59129465A (en) * 1983-01-13 1984-07-25 Matsushita Electric Ind Co Ltd Photosensor array device

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59129465A (en) * 1983-01-13 1984-07-25 Matsushita Electric Ind Co Ltd Photosensor array device

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