JPS57186971A - Stator coil - Google Patents

Stator coil

Info

Publication number
JPS57186971A
JPS57186971A JP6834481A JP6834481A JPS57186971A JP S57186971 A JPS57186971 A JP S57186971A JP 6834481 A JP6834481 A JP 6834481A JP 6834481 A JP6834481 A JP 6834481A JP S57186971 A JPS57186971 A JP S57186971A
Authority
JP
Japan
Prior art keywords
phase
stator
coils
equalized
turns
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
JP6834481A
Other languages
Japanese (ja)
Inventor
Saburo Kazama
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 JP6834481A priority Critical patent/JPS57186971A/en
Publication of JPS57186971A publication Critical patent/JPS57186971A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K29/00—Motors or generators having non-mechanical commutating devices, e.g. discharge tubes or semiconductor devices
    • H02K29/03—Motors or generators having non-mechanical commutating devices, e.g. discharge tubes or semiconductor devices with a magnetic circuit specially adapted for avoiding torque ripples or self-starting problems

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Brushless Motors (AREA)
  • Dc Machiner (AREA)

Abstract

PURPOSE:To obtain the DC brushless motor of low torque ripple by a method wherein the number of turns of each phase of stator coils are varied in accordance with the axial magnetic flux density between a rotor magnet and a stator yoke, and the counter electromotive voltage generating on the coils of each phase is equalized. CONSTITUTION:The number of turns of the stator coils 1', 1'' and 1''' of each phase is varied respectively in accordance with the distribution of the axial magnetic density between the rotor magnet 2 and the stator yoke 3, and the number of windings are determined in such a manner that the counter electromotive voltage generating at the stator coils 1', 1'' and 1''' will be equalized each other. Accordingly, in the DC brushless motor, the generated torque ripple of the motor can be reduced, the irregularity of revolution can be lessened, and the generation torque and the starting torque can also be increased.
JP6834481A 1981-05-08 1981-05-08 Stator coil Pending JPS57186971A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP6834481A JPS57186971A (en) 1981-05-08 1981-05-08 Stator coil

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP6834481A JPS57186971A (en) 1981-05-08 1981-05-08 Stator coil

Publications (1)

Publication Number Publication Date
JPS57186971A true JPS57186971A (en) 1982-11-17

Family

ID=13371120

Family Applications (1)

Application Number Title Priority Date Filing Date
JP6834481A Pending JPS57186971A (en) 1981-05-08 1981-05-08 Stator coil

Country Status (1)

Country Link
JP (1) JPS57186971A (en)

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