JPS5635698A - Operating procedure for induction motor - Google Patents

Operating procedure for induction motor

Info

Publication number
JPS5635698A
JPS5635698A JP9510980A JP9510980A JPS5635698A JP S5635698 A JPS5635698 A JP S5635698A JP 9510980 A JP9510980 A JP 9510980A JP 9510980 A JP9510980 A JP 9510980A JP S5635698 A JPS5635698 A JP S5635698A
Authority
JP
Japan
Prior art keywords
speed
induction motor
thyristors
cycloconverter
reverse parallel
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
JP9510980A
Other languages
Japanese (ja)
Inventor
Kazunori Masuda
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 JP9510980A priority Critical patent/JPS5635698A/en
Publication of JPS5635698A publication Critical patent/JPS5635698A/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
    • 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 facilitate the high speed operation by a cycloconverter, by selecting the thyristors which are connected in reverse parallel one another for each phase of the cycloconverter after the speed of the induction motor has reached the vicinity of the upper limit of the speed in ferquency control, and by controlling the firing angle. CONSTITUTION:A cycloconverter-type power converter 3 is controlled so that the ratio between the voltage and the frequency is kept approximately constant in a low speed region. When the speed of an induction motor 1 has reached the vicinity of the speed limit in the frequency control, the output signal of an oscillator 4 is turned off and one group of thyristors which are connected in reverse parallel one another for each phase is selected from the thyristors constituting the power converter 3. Thereafter, only the firing angles of these three groups of reverse parallel thyristors 3a-3f are controlled. In this constitution, since the speed of the induction motor is directly proportional to the power-supply frequency, the high speed operation of the induction motor with high efficiency can be performed.
JP9510980A 1980-07-14 1980-07-14 Operating procedure for induction motor Pending JPS5635698A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP9510980A JPS5635698A (en) 1980-07-14 1980-07-14 Operating procedure for induction motor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP9510980A JPS5635698A (en) 1980-07-14 1980-07-14 Operating procedure for induction motor

Publications (1)

Publication Number Publication Date
JPS5635698A true JPS5635698A (en) 1981-04-08

Family

ID=14128683

Family Applications (1)

Application Number Title Priority Date Filing Date
JP9510980A Pending JPS5635698A (en) 1980-07-14 1980-07-14 Operating procedure for induction motor

Country Status (1)

Country Link
JP (1) JPS5635698A (en)

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS499613A (en) * 1972-05-26 1974-01-28

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS499613A (en) * 1972-05-26 1974-01-28

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