JPS5681087A - Brushless dc motor - Google Patents

Brushless dc motor

Info

Publication number
JPS5681087A
JPS5681087A JP15598979A JP15598979A JPS5681087A JP S5681087 A JPS5681087 A JP S5681087A JP 15598979 A JP15598979 A JP 15598979A JP 15598979 A JP15598979 A JP 15598979A JP S5681087 A JPS5681087 A JP S5681087A
Authority
JP
Japan
Prior art keywords
rotor
magneto
converting element
switch
bypass filter
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
JP15598979A
Other languages
Japanese (ja)
Inventor
Makoto Goto
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 JP15598979A priority Critical patent/JPS5681087A/en
Publication of JPS5681087A publication Critical patent/JPS5681087A/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
    • H02P6/00—Arrangements for controlling synchronous motors or other dynamo-electric motors using electronic commutation dependent on the rotor position; Electronic commutators therefor
    • H02P6/34—Modelling or simulation for control purposes

Landscapes

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

Abstract

PURPOSE:To reduce influrence of offset voltage of a magneto-electro converting element, by operating a switch at a prescribed rpm of a rotor or higher, and by operating a semiconductor element by an electrical signal resulting from making an output of the magneto-electro converting element pass through a bypass filter. CONSTITUTION:A stator is provided with 2-phase coils 8 and 9 which interlock a field magnetic flux of a main pole section of a rotor and also with a magneto-electro converting element 29 (such as Hall element) which is opposite to a position detecting pole section of the rotor. It is further provided with a switch 59 for switching of connection in accordance with rotating speed of the rotor, a bypass filter 58 whose AC gain has been increased as compared with the DC gain and semiconductor elements 61 and 62 for opening and closing the current passage to the 2-phase coils 8 and 9, etc. And when rotation of the rotor reached a prescribed rpm or higher, the switch 59 becomes activated and the semiconductor elements 61 and 62 are activated by an electrical signal generated as a result of a making an output of the magneto-electro converting element 29 pass through the bypass filter 58.
JP15598979A 1979-11-30 1979-11-30 Brushless dc motor Pending JPS5681087A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP15598979A JPS5681087A (en) 1979-11-30 1979-11-30 Brushless dc motor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP15598979A JPS5681087A (en) 1979-11-30 1979-11-30 Brushless dc motor

Publications (1)

Publication Number Publication Date
JPS5681087A true JPS5681087A (en) 1981-07-02

Family

ID=15617910

Family Applications (1)

Application Number Title Priority Date Filing Date
JP15598979A Pending JPS5681087A (en) 1979-11-30 1979-11-30 Brushless dc motor

Country Status (1)

Country Link
JP (1) JPS5681087A (en)

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