LV14509A - High speed magnetoelectric synchronous motor - Google Patents

High speed magnetoelectric synchronous motor

Info

Publication number
LV14509A
LV14509A LVP-12-40A LV120040A LV14509A LV 14509 A LV14509 A LV 14509A LV 120040 A LV120040 A LV 120040A LV 14509 A LV14509 A LV 14509A
Authority
LV
Latvia
Prior art keywords
gap
air
pole
rotor
motor
Prior art date
Application number
LVP-12-40A
Other languages
Latvian (lv)
Other versions
LV14509B (en
Inventor
Nikolajs Levins
Jānis DIRBA
Ludmila LAVRINOVIČA
Vladislavs PUGAČEVS
Original Assignee
Rīgas Tehniskā Universitāte
Fizikālās Enerģētikas Institūts
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 Rīgas Tehniskā Universitāte, Fizikālās Enerģētikas Institūts filed Critical Rīgas Tehniskā Universitāte
Priority to LVP-12-40A priority Critical patent/LV14509B/en
Publication of LV14509A publication Critical patent/LV14509A/en
Publication of LV14509B publication Critical patent/LV14509B/en
Priority to PCT/EP2012/066001 priority patent/WO2013135312A2/en

Links

Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K21/00—Synchronous motors having permanent magnets; Synchronous generators having permanent magnets
    • H02K21/12—Synchronous motors having permanent magnets; Synchronous generators having permanent magnets with stationary armatures and rotating magnets
    • H02K21/22—Synchronous motors having permanent magnets; Synchronous generators having permanent magnets with stationary armatures and rotating magnets with magnets rotating around the armatures, e.g. flywheel magnetos
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K1/00—Details of the magnetic circuit
    • H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
    • H02K1/22—Rotating parts of the magnetic circuit
    • H02K1/27—Rotor cores with permanent magnets
    • H02K1/2786—Outer rotors
    • H02K1/2787—Outer rotors the magnetisation axis of the magnets being perpendicular to the rotor axis
    • H02K1/2789—Outer rotors the magnetisation axis of the magnets being perpendicular to the rotor axis the rotor consisting of two or more circumferentially positioned magnets
    • H02K1/2791—Surface mounted magnets; Inset magnets
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K2213/00—Specific aspects, not otherwise provided for and not covered by codes H02K2201/00 - H02K2211/00
    • H02K2213/03—Machines characterised by numerical values, ranges, mathematical expressions or similar information

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Permanent Field Magnets Of Synchronous Machinery (AREA)
  • Brushless Motors (AREA)
  • Permanent Magnet Type Synchronous Machine (AREA)

Abstract

A high speed magnetoelectric synchronous motor is proposed. The motor contains four-pole external rotor 1 with prismatic magnets 2 - 5. The rotor 1 is separated by an air-gap 7 from the slotted stator 6. The m-phase winding 9, for example 2-phase, is placed in the stator slots 8. The magnets 2 - 5 are mounted in the rectangular spaces between the poles 10 - 13. These spaces are created at a 10 - 25 degrees angle against the tangent planes 14 of the rotor 1 inner surface at the points 15 where spaces between the poles come out in air-gap 7. Magnetization direction of the magnets is perpendicular to the edges of spaces between the poles. The air-gap between the stator and rotor of the motor is uneven according to the expression...........where...is the minimum air-gap under the centre of the pole; ... is the number of pole pairs; ... is the angle of an arc from the centre of the pole to the point under consideration. In the centre of each pole there is non-magnetic space 17 with an opening width equal to the stator slot opening width. When the voltage is supplied to the stator 6 winding 9, m-phase current flows in the winding and creates a rotating magnetic field. As a result of the interaction between the magnetic field and poles 10 - 13, electromagnetic torque is generated and rotor begins to rotate. The proposed motor can also work as a brushless DC motor, in this case the m-phase windings are switched using signals from the rotor position sensor. An uneven air-gap decreases high-order harmonics of the field and approximates the magnetic flux density distribution in the air-gap to a sinusoidal function, which isn't distorted by the transverse reaction of the anchor due to non-magnetic space 17 in the centre of each pole. An oblique arrangement of the magnets allows to save expensive hard-magnetic materials and simplify magnet mounting. Through decreasing of high-order harmonics of the field in the air-gap decrease the motor vibration and weight as well as increase efficiency and specific torque.
LVP-12-40A 2012-03-13 2012-03-13 High speed magnetoelectric synchronous motor LV14509B (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
LVP-12-40A LV14509B (en) 2012-03-13 2012-03-13 High speed magnetoelectric synchronous motor
PCT/EP2012/066001 WO2013135312A2 (en) 2012-03-13 2012-08-16 High speed magnetoelectric synchronous motor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
LVP-12-40A LV14509B (en) 2012-03-13 2012-03-13 High speed magnetoelectric synchronous motor

Publications (2)

Publication Number Publication Date
LV14509A true LV14509A (en) 2012-04-20
LV14509B LV14509B (en) 2012-07-20

Family

ID=46826447

Family Applications (1)

Application Number Title Priority Date Filing Date
LVP-12-40A LV14509B (en) 2012-03-13 2012-03-13 High speed magnetoelectric synchronous motor

Country Status (2)

Country Link
LV (1) LV14509B (en)
WO (1) WO2013135312A2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10199889B2 (en) 2013-06-20 2019-02-05 Otis Elevator Company Electric machine having rotor with slanted permanent magnets

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19737391A1 (en) * 1997-08-27 1999-03-04 Magnet Motor Gmbh Electrical machine, the rotor of which is made up of permanent magnets and magnetic flux guide pieces
DE102004021661A1 (en) 2004-05-03 2005-12-15 BSH Bosch und Siemens Hausgeräte GmbH Commutator motor with several field winding groups
JP2006014457A (en) * 2004-06-24 2006-01-12 Fanuc Ltd Synchronous motor
RU2299509C2 (en) 2005-01-25 2007-05-20 Открытое акционерное общество "АВТОВАЗ" Permanent-magnet excited motor
DE102007029157A1 (en) * 2007-06-25 2009-01-08 Robert Bosch Gmbh Synchronous motor with 12 stator teeth and 10 rotor poles
LV13924B (en) 2007-10-10 2009-08-20 Rīgas Tehniskā Universitāte Rotor of synchronous machine with permanent magnets
DE102009000681A1 (en) * 2009-02-06 2010-08-12 Robert Bosch Gmbh synchronous machine
CN202014145U (en) 2011-02-28 2011-10-19 上海电机系统节能工程技术研究中心有限公司 Surface-mounted permanent magnet synchronous motor rotor structure used for improving air-gap flux density wave shape
LV14335B (en) 2011-03-09 2011-09-20 Rīgas Tehniskā Universitāte Permanent magnet synchronous machine

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10199889B2 (en) 2013-06-20 2019-02-05 Otis Elevator Company Electric machine having rotor with slanted permanent magnets

Also Published As

Publication number Publication date
WO2013135312A2 (en) 2013-09-19
LV14509B (en) 2012-07-20
WO2013135312A3 (en) 2014-08-14

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