JPS55160993A - Brushless electric motor - Google Patents

Brushless electric motor

Info

Publication number
JPS55160993A
JPS55160993A JP6714079A JP6714079A JPS55160993A JP S55160993 A JPS55160993 A JP S55160993A JP 6714079 A JP6714079 A JP 6714079A JP 6714079 A JP6714079 A JP 6714079A JP S55160993 A JPS55160993 A JP S55160993A
Authority
JP
Japan
Prior art keywords
hall element
current conversion
counter electromotive
circuits
capacitors
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
JP6714079A
Other languages
Japanese (ja)
Other versions
JPS6220791B2 (en
Inventor
Noriaki Wakabayashi
Toshio Inaji
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.)
Panasonic Holdings Corp
Original Assignee
Matsushita Electric Industrial 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 Matsushita Electric Industrial Co Ltd filed Critical Matsushita Electric Industrial Co Ltd
Priority to JP6714079A priority Critical patent/JPS55160993A/en
Publication of JPS55160993A publication Critical patent/JPS55160993A/en
Publication of JPS6220791B2 publication Critical patent/JPS6220791B2/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
    • H02P6/14—Electronic commutators
    • H02P6/16—Circuit arrangements for detecting position
    • H02P6/18—Circuit arrangements for detecting position without separate position detecting elements
    • H02P6/182—Circuit arrangements for detecting position without separate position detecting elements using back-emf in windings

Abstract

PURPOSE:To perform excellent control without using a Hall element or the like, by using as a rotation position signal for a permanent magnet rotor the output of a calculation circuit which picks out a portion of the counter electromotive force of a stator winding and performs time-dependent addition and subtraction. CONSTITUTION:Stator windings 2a-2c are energized through driving transistors 3a-3c. The turn-off regions of the counter electromotive forces of the windings 2 are picked out by rectifier circuits 30a-30c. The output half waves of the rectifier circuits are applied to discharge-type voltage/current conversion circuits 31a-31c and suction-type voltage/current conversion circuits 32a-32c to charge and discharge time-dependent integration capacitors 33a-33c to which a DC voltage bias 34 is being applied. Driving currents are sequentially changed-over by a differential amplifier circuit 35 on the basis of position signals stored in the capacitors 33 to drive a motor through a drive circuit 38. This results in dispensing with a Hall element or the like, facilitating manufacture and improving control accuracy.
JP6714079A 1979-05-29 1979-05-29 Brushless electric motor Granted JPS55160993A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP6714079A JPS55160993A (en) 1979-05-29 1979-05-29 Brushless electric motor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP6714079A JPS55160993A (en) 1979-05-29 1979-05-29 Brushless electric motor

Publications (2)

Publication Number Publication Date
JPS55160993A true JPS55160993A (en) 1980-12-15
JPS6220791B2 JPS6220791B2 (en) 1987-05-08

Family

ID=13336292

Family Applications (1)

Application Number Title Priority Date Filing Date
JP6714079A Granted JPS55160993A (en) 1979-05-29 1979-05-29 Brushless electric motor

Country Status (1)

Country Link
JP (1) JPS55160993A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59194693A (en) * 1983-04-20 1984-11-05 Sony Corp Drive circuit for dc motor
JPS62221894A (en) * 1986-03-20 1987-09-29 Matsushita Electric Ind Co Ltd Brushless motor
JPS62293986A (en) * 1986-06-10 1987-12-21 Matsushita Electric Ind Co Ltd Brushless motor
JPH0823696A (en) * 1983-02-02 1996-01-23 General Electric Co <Ge> Method and apparatus for controlling electron-rectified dc motor and washing machine using such motor

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0823696A (en) * 1983-02-02 1996-01-23 General Electric Co <Ge> Method and apparatus for controlling electron-rectified dc motor and washing machine using such motor
JPS59194693A (en) * 1983-04-20 1984-11-05 Sony Corp Drive circuit for dc motor
JPS62221894A (en) * 1986-03-20 1987-09-29 Matsushita Electric Ind Co Ltd Brushless motor
JPS62293986A (en) * 1986-06-10 1987-12-21 Matsushita Electric Ind Co Ltd Brushless motor

Also Published As

Publication number Publication date
JPS6220791B2 (en) 1987-05-08

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