The paper presents the combined results of numerical analyses of magnetic vibration introduced by the rotor eccentricity in permanent magnet motor with concentrated windings. The analysis is carried for two possible rotor displacements – uniform shift of its axis against stator and twist of that axis about the gravity point. The investigations were obtained by means of finite elements approach, both in electromagnetic and mechanical domain. The influence of these on magnitude and form of forced vibration is also considered.
CrosJ. and ViarougeP., Synthesis of high performance PM motors with concentrated windings, in IEEE Trans. on Energy Conversion17(2) (2002), 248–253.
2.
SalminenP.NiemelaM. and PyrhonenJ., Performance analysis of fractional slot wound PM-motors for low speed applications, in: Proc. of IEEE Industry Applications Society Conf., Vol. 2, 2005, pp. 1032–1037.
3.
MagnussenF. and LendenmannH., Parasitic effects in PM machines with concentrated windings, in IEEE Trans. on Industry Applications43(5) (2007), 1223–1232.
4.
WangJ.XiaZ. and HoweD., Comparison of vibration characteristics of 3-phase permanent magnet machines with concentrated, distributed and modular windings, in: Proc. of Int. Conf. on Electrical Machines, 2006, pp. 131.
5.
WangJ.XiaZ.LongS. and HoweD., Radial force density and vibration characteristics of modular permanent magnet brushless AC machine, in IET Proc. On Electric Power Applications153(6) (2006), 793–801.
6.
EL-RefaieA.JahnsT. and NovotnyD., Analysis of surface permanent magnet machines with fractional-slot concentrated windings, in IEEE Trans. on Energy Conversion21(1) (2006).
7.
ArakiS.KondouT. and YamagiwaA., Analyses of electromagnetic forces of concentrated winding permanent magnet brushless motors with rotor eccentricity, in: Int. Conf. on Electrical Machines and Systems, 2009, pp. 1–4.
8.
GuemesJ.A.IraolagoitiaA.M.Del HoyoJ.I. and FernandezP., Torque Analysis in Permanent-Magnet Synchronous Motors, A Comparative Study, IEEE Transactions on Energy Conversion26(1) (March 2011), pp. 55–63.
9.
MiziaJ.AdamiakK.EasthamA.R. and DawsonG.E., Finite element force calculation: Comparison of methods for electric machines, IEEE Trans. Magn.24(1) (Jan. 1988), 447–450.
10.
SwiniarskiJ.MlotkowskiA. and WitczakP., Finite elements model of roller bearing for natural frequency analysis of the shaft (in Polish), in: IX Conf. on Finite elements in CAE/CAM, Gizycko, 2005.
11.
WitczakP., Vibration and Acoustics of Electric Machines with Permanent Magnets (in Polish), Wydawnictwa Politechniki Lodzkiej, 2012, ISBN 978-83-7283-464-5.
12.
WitczakP. and SwiniarskiJ., Vibration analysis of permanent magnet motor with concentrated windings, International Journal of Applied Electromagnetics and Mechanics46(2) (2014), 419–425.
13.
ZhuJ.ZhaoW.JiJ. and LingZ., Comparative investigation of concentrated winding and vernier double-stator permanent-magnet motors, International Journal of Applied Electromagnetics and Mechanics53(3) (2017), 387–395.
14.
ZhaoW. and KwonB., Dual rotor flux switching permanent magnet machines with phase-group concentrated-coil windings for high performance, International Journal of Applied Electromagnetics and Mechanics52(1–2) (2016), 599–607.
15.
YamaguchiT.KawaseY.SanoS.NagaiH. and NakamuraM., Induced voltage analysis of interior permanent magnet motor taking into account Y- or Δ-connected circuit using 3-D finite element method, International Journal of Applied Electromagnetics and Mechanics19(1–4) (2004), 69–73.
16.
KoutroulisC.H.KladasA.G. and MamalisA.G., Advanced permanent magnet machine design and construction for wind power generation and traction applications, International Journal of Applied Electromagnetics and Mechanics13(1–4) (2001/2002), 285–290.
