JPS648853A - Skewed brushless rotary electric machine - Google Patents

Skewed brushless rotary electric machine

Info

Publication number
JPS648853A
JPS648853A JP16377687A JP16377687A JPS648853A JP S648853 A JPS648853 A JP S648853A JP 16377687 A JP16377687 A JP 16377687A JP 16377687 A JP16377687 A JP 16377687A JP S648853 A JPS648853 A JP S648853A
Authority
JP
Japan
Prior art keywords
permanent magnet
field core
skew
stator field
rotor
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
JP16377687A
Other languages
Japanese (ja)
Inventor
Makoto Momiyama
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.)
Yaskawa Electric Corp
Original Assignee
Yaskawa Electric Manufacturing 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 Yaskawa Electric Manufacturing Co Ltd filed Critical Yaskawa Electric Manufacturing Co Ltd
Priority to JP16377687A priority Critical patent/JPS648853A/en
Publication of JPS648853A publication Critical patent/JPS648853A/en
Pending legal-status Critical Current

Links

Landscapes

  • Brushless Motors (AREA)

Abstract

PURPOSE:To reduce a cogging torque and the rate of decrease of an induced voltage by setting the number of salient poles of a stator field core as 1.5 times the number of magnetic poles of a rotor permanent magnet and by applying skew to said rotor permanent magnet or stator field core. CONSTITUTION:In a synchronous type brushless motor, in which the numbers of magnetic poles of a rotor permanent magnet, slots of a field core and driving AC phases are respectively 6, 9 and 3, such skew as shown by a broken line is applied to a ring-shaped plastic permanent magnet 1 fastened on the outer periphery of a rotor by 1/2 of a slot pitch between slots opened in a three-U, V, W-phase excited stator field core 2. Thus, much cogging torque generated cancels each other and the rate of decrease of an induced voltage also is small as compared with that of the existing 1 slot skew.
JP16377687A 1987-06-30 1987-06-30 Skewed brushless rotary electric machine Pending JPS648853A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP16377687A JPS648853A (en) 1987-06-30 1987-06-30 Skewed brushless rotary electric machine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP16377687A JPS648853A (en) 1987-06-30 1987-06-30 Skewed brushless rotary electric machine

Publications (1)

Publication Number Publication Date
JPS648853A true JPS648853A (en) 1989-01-12

Family

ID=15780502

Family Applications (1)

Application Number Title Priority Date Filing Date
JP16377687A Pending JPS648853A (en) 1987-06-30 1987-06-30 Skewed brushless rotary electric machine

Country Status (1)

Country Link
JP (1) JPS648853A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH05168181A (en) * 1991-12-13 1993-07-02 Sankyo Seiki Mfg Co Ltd Brushless motor
US5528094A (en) * 1993-03-29 1996-06-18 Aisin Aw Co., Ltd. Drive system for electric cars
US5886440A (en) * 1994-05-02 1999-03-23 Aisin Aw Co., Ltd. Electric motor with plural rotor portions having pole members of different widths
JP2013255294A (en) * 2012-06-05 2013-12-19 Masaki Oda Method for reducing rotational resistance in generator
CN110429731A (en) * 2019-07-31 2019-11-08 中车永济电机有限公司 Large modular symmetrical inclined poles permanent magnetism wind power generator rotor

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH05168181A (en) * 1991-12-13 1993-07-02 Sankyo Seiki Mfg Co Ltd Brushless motor
US5528094A (en) * 1993-03-29 1996-06-18 Aisin Aw Co., Ltd. Drive system for electric cars
US5886440A (en) * 1994-05-02 1999-03-23 Aisin Aw Co., Ltd. Electric motor with plural rotor portions having pole members of different widths
JP2013255294A (en) * 2012-06-05 2013-12-19 Masaki Oda Method for reducing rotational resistance in generator
CN110429731A (en) * 2019-07-31 2019-11-08 中车永济电机有限公司 Large modular symmetrical inclined poles permanent magnetism wind power generator rotor

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