JPS5457609A - Rotary machine - Google Patents

Rotary machine

Info

Publication number
JPS5457609A
JPS5457609A JP12552477A JP12552477A JPS5457609A JP S5457609 A JPS5457609 A JP S5457609A JP 12552477 A JP12552477 A JP 12552477A JP 12552477 A JP12552477 A JP 12552477A JP S5457609 A JPS5457609 A JP S5457609A
Authority
JP
Japan
Prior art keywords
groove
speed detecting
detecting coil
magnetic
auxiliary groove
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
JP12552477A
Other languages
Japanese (ja)
Other versions
JPS6011543B2 (en
Inventor
Makoto Goto
Kazuji Kobayashi
Yoshiaki Igarashi
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 JP52125524A priority Critical patent/JPS6011543B2/en
Publication of JPS5457609A publication Critical patent/JPS5457609A/en
Publication of JPS6011543B2 publication Critical patent/JPS6011543B2/en
Expired legal-status Critical Current

Links

Landscapes

  • Permanent Magnet Type Synchronous Machine (AREA)

Abstract

PURPOSE: To simplify a construction with a less number of part items, by means of installing a speed detecting coil in an auxiliary groove, utilized, provided in a protruding unit of armature core.
CONSTITUTION: A rotor 1, having a permanent magnet 2 magnetized in a plurality of poles with an equal distance apart, an armature core 3, having a plurality of magnetic protrusion units 4a to 4c facing to the magnetized surfaces, a drive coil 5a to 5c installed to be wound on each of the protrusion units, and a speed detecting coil 7a to 7c, for obtaining a signal of frequency corresponding to a rotational speed of the rotor, are provided. An auxiliary groove 6a1 to 6c2 of the shape, that enlarges a space with the magnet, is provided in a part facing to a permanent magnet of the protrusion unit, with a speed detecting coil installed to be wound in said groove part. In this way, a magnetic surge component due to a groove 8a to 8c will be cancelled by a magnetic surge component of the auxiliary groove 6a1 to 6c2 and reduced capable of lessening a cogging force simulataneously with an initial requirement expectedly capable to be accomplished
COPYRIGHT: (C)1979,JPO&Japio
JP52125524A 1977-10-18 1977-10-18 rotating electric machine Expired JPS6011543B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP52125524A JPS6011543B2 (en) 1977-10-18 1977-10-18 rotating electric machine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP52125524A JPS6011543B2 (en) 1977-10-18 1977-10-18 rotating electric machine

Publications (2)

Publication Number Publication Date
JPS5457609A true JPS5457609A (en) 1979-05-09
JPS6011543B2 JPS6011543B2 (en) 1985-03-26

Family

ID=14912288

Family Applications (1)

Application Number Title Priority Date Filing Date
JP52125524A Expired JPS6011543B2 (en) 1977-10-18 1977-10-18 rotating electric machine

Country Status (1)

Country Link
JP (1) JPS6011543B2 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0820140A3 (en) * 1996-07-15 1998-04-01 General Electric Company Rotor angular position control of single phase permanent magnet motor
US6104113A (en) * 1998-05-14 2000-08-15 General Electric Company Coil assembly for sensorless rotor angular position control of single phase permanent magnet motor

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0820140A3 (en) * 1996-07-15 1998-04-01 General Electric Company Rotor angular position control of single phase permanent magnet motor
US5986419A (en) * 1996-07-15 1999-11-16 General Electric Company Quadrature axis winding for sensorless rotor angular position control of single phase permanent magnet motor
US6104113A (en) * 1998-05-14 2000-08-15 General Electric Company Coil assembly for sensorless rotor angular position control of single phase permanent magnet motor

Also Published As

Publication number Publication date
JPS6011543B2 (en) 1985-03-26

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