JPS56129596A - Ac motor controlling method - Google Patents

Ac motor controlling method

Info

Publication number
JPS56129596A
JPS56129596A JP3269380A JP3269380A JPS56129596A JP S56129596 A JPS56129596 A JP S56129596A JP 3269380 A JP3269380 A JP 3269380A JP 3269380 A JP3269380 A JP 3269380A JP S56129596 A JPS56129596 A JP S56129596A
Authority
JP
Japan
Prior art keywords
selector switch
ratio
motor
star
delta
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
JP3269380A
Other languages
Japanese (ja)
Inventor
Takashi Kitazawa
Hideki Hayashi
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.)
Toyo Electric Manufacturing Ltd
Original Assignee
Toyo Electric Manufacturing 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 Toyo Electric Manufacturing Ltd filed Critical Toyo Electric Manufacturing Ltd
Priority to JP3269380A priority Critical patent/JPS56129596A/en
Publication of JPS56129596A publication Critical patent/JPS56129596A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
    • H02P27/00—Arrangements or methods for the control of AC motors characterised by the kind of supply voltage
    • H02P27/04—Arrangements or methods for the control of AC motors characterised by the kind of supply voltage using variable-frequency supply voltage, e.g. inverter or converter supply voltage
    • H02P27/06—Arrangements or methods for the control of AC motors characterised by the kind of supply voltage using variable-frequency supply voltage, e.g. inverter or converter supply voltage using dc to ac converters or inverters
    • H02P27/08—Arrangements or methods for the control of AC motors characterised by the kind of supply voltage using variable-frequency supply voltage, e.g. inverter or converter supply voltage using dc to ac converters or inverters with pulse width modulation
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
    • H02P25/00—Arrangements or methods for the control of AC motors characterised by the kind of AC motor or by structural details
    • H02P25/16—Arrangements or methods for the control of AC motors characterised by the kind of AC motor or by structural details characterised by the circuit arrangement or by the kind of wiring
    • H02P25/18—Arrangements or methods for the control of AC motors characterised by the kind of AC motor or by structural details characterised by the circuit arrangement or by the kind of wiring with arrangements for switching the windings, e.g. with mechanical switches or relays
    • H02P25/184—Arrangements or methods for the control of AC motors characterised by the kind of AC motor or by structural details characterised by the circuit arrangement or by the kind of wiring with arrangements for switching the windings, e.g. with mechanical switches or relays wherein the motor speed is changed by switching from a delta to a star, e.g. wye, connection of its windings, or vice versa
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
    • H02P27/00—Arrangements or methods for the control of AC motors characterised by the kind of supply voltage
    • H02P27/04—Arrangements or methods for the control of AC motors characterised by the kind of supply voltage using variable-frequency supply voltage, e.g. inverter or converter supply voltage
    • H02P27/047—V/F converter, wherein the voltage is controlled proportionally with the frequency

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Control Of Ac Motors In General (AREA)

Abstract

PURPOSE:To decrease line current and to reduce power consumption by a method wherein both V/F and motor winding connection are altered. CONSTITUTION:A star-delta selector switch 4, an adjuster 8 of V/F (Voltage/ Frequency) ratio at AC motor 3 terminals, and a V/F ratio selector switch 11 are furnished. The star-delta selector switch 4 changes the AC motor 3 winding connection, selecting the star for a low speed running and the delta for a high speed running. The V/F selector switch 11 selects command signals to alter the output voltage of the PWM inverter 2 so that the V/F ratio may be smaller in the low speed range and larger in the high speed range. Thus, motor winding connection modification and V/F ratio variation effected together result in a greatly decreased line current, ensuring a continuous torque characteristic suiting given loads even in the low speed range.
JP3269380A 1980-03-17 1980-03-17 Ac motor controlling method Pending JPS56129596A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP3269380A JPS56129596A (en) 1980-03-17 1980-03-17 Ac motor controlling method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP3269380A JPS56129596A (en) 1980-03-17 1980-03-17 Ac motor controlling method

Publications (1)

Publication Number Publication Date
JPS56129596A true JPS56129596A (en) 1981-10-09

Family

ID=12365933

Family Applications (1)

Application Number Title Priority Date Filing Date
JP3269380A Pending JPS56129596A (en) 1980-03-17 1980-03-17 Ac motor controlling method

Country Status (1)

Country Link
JP (1) JPS56129596A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01160393A (en) * 1987-12-17 1989-06-23 Fanuc Ltd Connection change-over device of three phase induction motor
EP3154182A4 (en) * 2014-06-09 2018-03-14 Hitachi Industrial Equipment Systems Co., Ltd. Power conversion device
JP2019516342A (en) * 2016-04-13 2019-06-13 ファルコン・パワー，エルエルシー Variable torque motor / generator / transmission

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01160393A (en) * 1987-12-17 1989-06-23 Fanuc Ltd Connection change-over device of three phase induction motor
EP3154182A4 (en) * 2014-06-09 2018-03-14 Hitachi Industrial Equipment Systems Co., Ltd. Power conversion device
JP2019516342A (en) * 2016-04-13 2019-06-13 ファルコン・パワー，エルエルシー Variable torque motor / generator / transmission

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