EP 1430587 A4 20041229 - METHOD AND APPARATUS FOR TORQUE RIPPLE REDUCTION IN SINUSOIDALLY EXCITED BRUSHLESS PERMANENT MAGNET MOTORS
Title (en)
METHOD AND APPARATUS FOR TORQUE RIPPLE REDUCTION IN SINUSOIDALLY EXCITED BRUSHLESS PERMANENT MAGNET MOTORS
Title (de)
VERFAHREN UND VORRICHTUNG ZUR REDUKTION DER DREHMOMENTWELLIGKEIT IN SINUSFÖRMIG ERREGTEN BÜRSTENLOSEN PERMANENTMAGNETMOTOREN
Title (fr)
PROCEDE ET APPAREIL DE REDUCTION D'ONDULATION DE COUPLE DANS DES MOTEURS A AIMANT PERMANENT, SANS BALAI, SINUSOIDALEMENT EXCITES
Publication
Application
Priority
US 0128812 W 20010914
Abstract (en)
[origin: WO03026105A1] A method for determining a dimension in a motor is described. By applying Fourier analysis, a sequence of terms is obtained. Since the fifth harmonic is the most undesirable term, the minimization of the fifth harmonic term will make resultant waveform closer to sine wave. Based upon the above, a determination of an angle delta (22) is described, wherein the fifth harmonic term of the sequence of terms is minimized. An electronic motor having a rotor (26) and a set of slot on said rotor surface (36) having a set of magnets (46) with a width delta (22) along the circumference (30) of said rotor surface (36) is described., The width delta (22) is determined by a method that includes applying Fourier analysis thereby a sequence of terms is obtained. Since the fifth harmonic is the most undesirable term, the minimization of the fifth harmonic term will make resultant waveform closer to sine wave. Based upon the above, a determination of an angle delta (22) is described, wherein the fifth harmonic tem of the sequence of terms is minimized.
IPC 1-7
IPC 8 full level
H02K 1/27 (2006.01); H02K 15/03 (2006.01); H02K 29/03 (2006.01)
CPC (source: EP US)
H02K 1/278 (2013.01 - EP US); H02K 15/03 (2013.01 - EP); H02K 29/03 (2013.01 - EP)
Citation (search report)
- [Y] US 5315198 A 19940524 - TOROH VILMOS C [SE]
- [X] SURONG HUANG; AYDIN, M.; LIPO, T.A.: "Torque quality assessment and sizing optimization for surface mounted permanent magnet machines", THIRTY-SIXTH IAS ANNUAL MEETING, vol. 3, September 2001 (2001-09-01), pages 1603 - 1610, XP002301887
- [X] H.-D. KOLLETSCHKE: "Die modulare dauermagnetmaschine - Aufbau und Eigenschaften (The modular permanent magnet machine - Assembly and properties)", PHD THESIS, 1987, UNIVERSITY OF THE BUNDESWEHR MUNICH, XP002301888
- [Y] HUANG, S.; AYDIN, M.; LIPO, T.A.: "Electromagnetic vibration and noise assessment for surface mounted PM machines", IEEE POWER ENGINEERING SOCIETY SUMMER MEETING, vol. 3, July 2001 (2001-07-01), pages 1417 - 1426, XP002301889
- See references of WO 03026105A1
Designated contracting state (EPC)
AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE TR
DOCDB simple family (publication)
WO 03026105 A1 20030327; EP 1430587 A1 20040623; EP 1430587 A4 20041229
DOCDB simple family (application)
US 0128812 W 20010914; EP 01977103 A 20010914