WO2011045467A3 - A rotor of an electrical machine - Google Patents

A rotor of an electrical machine Download PDF

Info

Publication number
WO2011045467A3
WO2011045467A3 PCT/FI2010/050751 FI2010050751W WO2011045467A3 WO 2011045467 A3 WO2011045467 A3 WO 2011045467A3 FI 2010050751 W FI2010050751 W FI 2010050751W WO 2011045467 A3 WO2011045467 A3 WO 2011045467A3
Authority
WO
WIPO (PCT)
Prior art keywords
rotor
electrical machine
winding
control
leakage
Prior art date
Application number
PCT/FI2010/050751
Other languages
French (fr)
Other versions
WO2011045467A2 (en
Inventor
Sören NYMAN
Original Assignee
Wärtsilä Finland Oy
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 Wärtsilä Finland Oy filed Critical Wärtsilä Finland Oy
Priority to EP10776394A priority Critical patent/EP2489112A2/en
Priority to CN2010800463499A priority patent/CN102549886A/en
Publication of WO2011045467A2 publication Critical patent/WO2011045467A2/en
Publication of WO2011045467A3 publication Critical patent/WO2011045467A3/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
    • H02K21/02—Details
    • H02K21/04—Windings on magnets for additional excitation ; Windings and magnets for additional excitation
    • H02K21/042—Windings on magnets for additional excitation ; Windings and magnets for additional excitation with permanent magnets and field winding both rotating
    • 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
    • H02K1/2706—Inner rotors
    • H02K1/272—Inner rotors the magnetisation axis of the magnets being perpendicular to the rotor axis
    • H02K1/274—Inner rotors the magnetisation axis of the magnets being perpendicular to the rotor axis the rotor consisting of two or more circumferentially positioned magnets
    • H02K1/2753—Inner rotors the magnetisation axis of the magnets being perpendicular to the rotor axis the rotor consisting of two or more circumferentially positioned magnets the rotor consisting of magnets or groups of magnets arranged with alternating polarity
    • H02K1/276—Magnets embedded in the magnetic core, e.g. interior permanent magnets [IPM]
    • H02K1/2766—Magnets embedded in the magnetic core, e.g. interior permanent magnets [IPM] having a flux concentration effect
    • H02K1/2773—Magnets embedded in the magnetic core, e.g. interior permanent magnets [IPM] having a flux concentration effect consisting of tangentially magnetized radial magnets

Abstract

The invention relates to a rotor (4) of an electric machine. The rotor (4) comprises a plurality of permanent magnets (12) embedded in a rotor core (13) and arranged in radial direction for flux concentration. The rotor further comprises a winding (14) arranged at respective positions of the rotor (10) where leakage of the magnetic flux around one magnet tip is generated, and a power supply (20, 21, 22) to provide current to control the winding (14) to control the leakage flux.
PCT/FI2010/050751 2009-10-14 2010-09-30 A rotor of an electrical machine WO2011045467A2 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP10776394A EP2489112A2 (en) 2009-10-14 2010-09-30 A rotor of an electric machine
CN2010800463499A CN102549886A (en) 2009-10-14 2010-09-30 A rotor of an electrical machine

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FI20096061A FI20096061A0 (en) 2009-10-14 2009-10-14 ELECTRICAL MACHINE ROTOR
FI20096061 2009-10-14

Publications (2)

Publication Number Publication Date
WO2011045467A2 WO2011045467A2 (en) 2011-04-21
WO2011045467A3 true WO2011045467A3 (en) 2011-09-22

Family

ID=41263477

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/FI2010/050751 WO2011045467A2 (en) 2009-10-14 2010-09-30 A rotor of an electrical machine

Country Status (4)

Country Link
EP (1) EP2489112A2 (en)
CN (1) CN102549886A (en)
FI (1) FI20096061A0 (en)
WO (1) WO2011045467A2 (en)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5502368A (en) * 1994-06-06 1996-03-26 Ecoair Corp. Hybrid alternator with voltage regulator
DE19757502A1 (en) * 1997-12-23 1999-06-24 Vlado Dr Ostovic Electric machine with permanent magnet excitation
US20060103251A1 (en) * 2002-08-09 2006-05-18 Hitachi, Ltd Rotor of permanent magnet rotating electric machine

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
HUT76400A (en) * 1993-06-14 1997-08-28 Ecoair Corp Ac generator, hybrid generator, as well as method and voltage regulator for controlling the current of coil of the generator, further a three-state switch bridge
JPH08251848A (en) 1995-01-11 1996-09-27 Yaskawa Electric Corp Rotor of permanent magnet type synchronous rotary machine

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5502368A (en) * 1994-06-06 1996-03-26 Ecoair Corp. Hybrid alternator with voltage regulator
DE19757502A1 (en) * 1997-12-23 1999-06-24 Vlado Dr Ostovic Electric machine with permanent magnet excitation
US20060103251A1 (en) * 2002-08-09 2006-05-18 Hitachi, Ltd Rotor of permanent magnet rotating electric machine

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See also references of EP2489112A2 *

Also Published As

Publication number Publication date
CN102549886A (en) 2012-07-04
EP2489112A2 (en) 2012-08-22
FI20096061A0 (en) 2009-10-14
WO2011045467A2 (en) 2011-04-21

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