JPS55117487A - Controlling device for electric motor - Google Patents

Controlling device for electric motor

Info

Publication number
JPS55117487A
JPS55117487A JP2376079A JP2376079A JPS55117487A JP S55117487 A JPS55117487 A JP S55117487A JP 2376079 A JP2376079 A JP 2376079A JP 2376079 A JP2376079 A JP 2376079A JP S55117487 A JPS55117487 A JP S55117487A
Authority
JP
Japan
Prior art keywords
windings
sine wave
hall elements
voltage
transistors
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
JP2376079A
Other languages
Japanese (ja)
Other versions
JPS6212758B2 (en
Inventor
Ryohei Uchida
Tatsuo Yamazaki
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.)
Mitsubishi Electric Corp
Original Assignee
Mitsubishi Electric Corp
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 Mitsubishi Electric Corp filed Critical Mitsubishi Electric Corp
Priority to JP2376079A priority Critical patent/JPS55117487A/en
Publication of JPS55117487A publication Critical patent/JPS55117487A/en
Publication of JPS6212758B2 publication Critical patent/JPS6212758B2/ja
Granted 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
    • H02P6/00—Arrangements for controlling synchronous motors or other dynamo-electric motors using electronic commutation dependent on the rotor position; Electronic commutators therefor
    • H02P6/10—Arrangements for controlling torque ripple, e.g. providing reduced torque ripple

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Control Of Motors That Do Not Use Commutators (AREA)

Abstract

PURPOSE:To obtain a transistor motor which can be driven with a low torque ripple, by applying a voltage proportional to a magnetic flux density to two-phase portions of three-phase armature windings, whereby a sine wave current, which is restricted by a winding resistance, flows to the windings. CONSTITUTION:Input voltages at both ends of Hall elements alpha, beta are divided by resistors (r), (r), (r/2), and an average value thereof is applied as a positive-phase input to an operational amplifier P3 to thereby control a common emitter potential Vc of transistors Q5, Q6. Outputs from the Hall elements alpha, beta are received as differential inputs by operational amplifiers P1, P2 to thereby control common emitter potentials Vu, Vv of transistors Q1, Q2 and Q3, Q4. A voltage applied to windings is a sine wave voltage which is proportional as it is to output voltages of the Hall elements. The electric current flowing in the windings is a sine wave current of a value obtained by dividing the difference between the voltage applied to the winding and a speed electromotive force of a sine wave by a winding resistance. Therefore, an output torque represented by a product of a magnetic flux density and the electric current flowing in the windings has a constant value irrespective of the rotational position of the electric motor.
JP2376079A 1979-02-28 1979-02-28 Controlling device for electric motor Granted JPS55117487A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2376079A JPS55117487A (en) 1979-02-28 1979-02-28 Controlling device for electric motor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2376079A JPS55117487A (en) 1979-02-28 1979-02-28 Controlling device for electric motor

Publications (2)

Publication Number Publication Date
JPS55117487A true JPS55117487A (en) 1980-09-09
JPS6212758B2 JPS6212758B2 (en) 1987-03-20

Family

ID=12119280

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2376079A Granted JPS55117487A (en) 1979-02-28 1979-02-28 Controlling device for electric motor

Country Status (1)

Country Link
JP (1) JPS55117487A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58116088A (en) * 1981-12-29 1983-07-11 Sony Corp Four-pole three-phase brushless motor
JPS60204284A (en) * 1984-03-27 1985-10-15 Secoh Giken Inc 3-phase semiconductor motor coupled in delta connection

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2021039413A1 (en) * 2019-08-28 2021-03-04 日立Astemo株式会社 Disc brake

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58116088A (en) * 1981-12-29 1983-07-11 Sony Corp Four-pole three-phase brushless motor
JPS60204284A (en) * 1984-03-27 1985-10-15 Secoh Giken Inc 3-phase semiconductor motor coupled in delta connection

Also Published As

Publication number Publication date
JPS6212758B2 (en) 1987-03-20

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