JPS5797392A - Controlling method for induction motor with inverter - Google Patents

Controlling method for induction motor with inverter

Info

Publication number
JPS5797392A
JPS5797392A JP17095380A JP17095380A JPS5797392A JP S5797392 A JPS5797392 A JP S5797392A JP 17095380 A JP17095380 A JP 17095380A JP 17095380 A JP17095380 A JP 17095380A JP S5797392 A JPS5797392 A JP S5797392A
Authority
JP
Japan
Prior art keywords
motor
power factor
frequency
fundamental wave
wave voltage
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
JP17095380A
Other languages
Japanese (ja)
Inventor
Keijiro Sakai
Yasuo Matsuda
Mitsusachi Motobe
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.)
Hitachi Ltd
Original Assignee
Hitachi 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 Hitachi Ltd filed Critical Hitachi Ltd
Priority to JP17095380A priority Critical patent/JPS5797392A/en
Priority to US06/326,809 priority patent/US4420718A/en
Priority to DE8181305711T priority patent/DE3170436D1/en
Priority to EP19810305711 priority patent/EP0053916B1/en
Publication of JPS5797392A publication Critical patent/JPS5797392A/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
    • H02P23/00—Arrangements or methods for the control of AC motors characterised by a control method other than vector control
    • H02P23/26—Power factor control [PFC]
    • 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

Abstract

PURPOSE:To enable the reduction in iron loss and copper loss of an induction motor by controlling so that the power factor of the motor falls within the set range or the ratio of fundamental wave voltage to a frequency corresponding to a target frequency becomes as prescribed, thereby improving the power factor at the time of light load for the motor. CONSTITUTION:A frequency f corresponding to a target rotating speed of an induction motor 5 and the power factor of the motor are preset in their range, and the DC current IA inputted to an inverter 4 is detected to obtain the power factor of the motor in the operating state of the motor 5. When the obtained power factor of the motor exhibits a value out of the preset range and the ratio of fundamental wave voltage to a frequency corresponding to a target rotating speed of the motor is not constant, it is so controlled that the power factor of the motor exhibits the value in the preset range of the power factor of the motor by varying the fundamental wave voltage and the ratio of the fundamental wave voltage to a frequency f corresponding to a target rotating speed of the motor exhibits constant.
JP17095380A 1980-12-05 1980-12-05 Controlling method for induction motor with inverter Pending JPS5797392A (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
JP17095380A JPS5797392A (en) 1980-12-05 1980-12-05 Controlling method for induction motor with inverter
US06/326,809 US4420718A (en) 1980-12-05 1981-12-02 Control system for induction motor using inverter for AC power supply
DE8181305711T DE3170436D1 (en) 1980-12-05 1981-12-03 Control system for induction motor using inverter for ac power supply
EP19810305711 EP0053916B1 (en) 1980-12-05 1981-12-03 Control system for induction motor using inverter for ac power supply

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP17095380A JPS5797392A (en) 1980-12-05 1980-12-05 Controlling method for induction motor with inverter

Publications (1)

Publication Number Publication Date
JPS5797392A true JPS5797392A (en) 1982-06-17

Family

ID=15914433

Family Applications (1)

Application Number Title Priority Date Filing Date
JP17095380A Pending JPS5797392A (en) 1980-12-05 1980-12-05 Controlling method for induction motor with inverter

Country Status (1)

Country Link
JP (1) JPS5797392A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2018044947A (en) * 2016-09-14 2018-03-22 台達電子工業股▲ふん▼有限公司Ｄｅｌｔａ Ｅｌｅｃｔｒｏｎｉｃｓ，Ｉｎｃ． Current detector and method of operation of the detector

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2018044947A (en) * 2016-09-14 2018-03-22 台達電子工業股▲ふん▼有限公司Ｄｅｌｔａ Ｅｌｅｃｔｒｏｎｉｃｓ，Ｉｎｃ． Current detector and method of operation of the detector

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