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Erschienen in: Electrical Engineering 3/2017

17.10.2016 | Original Paper

Prediction of the static unbalanced magnetic pull in synchronous surface mounted permanent magnet machines

verfasst von: Robert Goraj

Erschienen in: Electrical Engineering | Ausgabe 3/2017

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Abstract

The paper presents a calculation effort efficient analytical formula for the prediction of the static unbalanced magnetic pull (UMP) in synchronous surface mounted permanent magnet (PM) electrical machines. The derived formula predicts the UMP making use only of the magnet remanent flux density, rotor eccentricity, and geometrical parameters of the motor. The formula was discussed and compared with measurement data. Except of the UMP the eccentricity-dependent magnetic stiffness coefficient has been derived and presented in figures as a function of the ratio of the airgap length to the magnet height. It could be showed that in the case of examined PM machines, the magnetic stiffness coefficient varies quite moderate with the rotor eccentricity.

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Literatur
1.
Zurück zum Zitat Smith CA, Dorrell DG (1996) Calculation and measurement of unbalanced magnetic pull in cage induction motors with eccentric rotors. I. Analytical model. Electr Power Appl IEE Proc 143(3):193–201 Smith CA, Dorrell DG (1996) Calculation and measurement of unbalanced magnetic pull in cage induction motors with eccentric rotors. I. Analytical model. Electr Power Appl IEE Proc 143(3):193–201
2.
Zurück zum Zitat Dorrell DG, Smith AC (1996) Calculation and measurement of unbalanced magnetic pull in cage induction motors with eccentric rotors. II. Experimental investigation. Electr Power Appl IEE Proc 143(3):202–210CrossRef Dorrell DG, Smith AC (1996) Calculation and measurement of unbalanced magnetic pull in cage induction motors with eccentric rotors. II. Experimental investigation. Electr Power Appl IEE Proc 143(3):202–210CrossRef
3.
Zurück zum Zitat Faiz J, Ebrahimi BM, Akin B, Toliyat HA (2008) Finite-element transient analysis of induction motors under mixed eccentricity fault. Magn IEEE Trans 44(1):66–74CrossRef Faiz J, Ebrahimi BM, Akin B, Toliyat HA (2008) Finite-element transient analysis of induction motors under mixed eccentricity fault. Magn IEEE Trans 44(1):66–74CrossRef
4.
Zurück zum Zitat Lee S-K, Kang G-H, Hur J (2011) Analysis of radial forces in 100kW IPM machines for ship considering stator and rotor eccentricity. In: Power Electronics and ECCE Asia (ICPE & ECCE), 2011 IEEE 8th International Conference, May 30 2011–June 3 2011, pp 2457–2461 Lee S-K, Kang G-H, Hur J (2011) Analysis of radial forces in 100kW IPM machines for ship considering stator and rotor eccentricity. In: Power Electronics and ECCE Asia (ICPE & ECCE), 2011 IEEE 8th International Conference, May 30 2011–June 3 2011, pp 2457–2461
5.
Zurück zum Zitat Kim K-T, Kim K-S, Hwang S-M, Kim T-J, Jung Y-H (2001) Comparison of magnetic forces for IPM and SPM motor with rotor eccentricity. Magn IEEE Trans 37(5):3448–3451CrossRef Kim K-T, Kim K-S, Hwang S-M, Kim T-J, Jung Y-H (2001) Comparison of magnetic forces for IPM and SPM motor with rotor eccentricity. Magn IEEE Trans 37(5):3448–3451CrossRef
6.
Zurück zum Zitat Dorrell D, Hsieh M-F, Guo YG (2009) Unbalanced magnet pull in large brushless rare-earth permanent magnet motors with rotor eccentricity. Magn IEEE Trans 45(10):4586–4589CrossRef Dorrell D, Hsieh M-F, Guo YG (2009) Unbalanced magnet pull in large brushless rare-earth permanent magnet motors with rotor eccentricity. Magn IEEE Trans 45(10):4586–4589CrossRef
7.
Zurück zum Zitat Dorrell D, Popescu M, Ionel D (2010) Unbalanced magnetic pull due to asymmetry and low-level static rotor eccentricity in fractional-slot brushless permanent-magnet motors with surface-magnet and consequent-pole rotors. Magn IEEE Trans 46(7):2675–2685CrossRef Dorrell D, Popescu M, Ionel D (2010) Unbalanced magnetic pull due to asymmetry and low-level static rotor eccentricity in fractional-slot brushless permanent-magnet motors with surface-magnet and consequent-pole rotors. Magn IEEE Trans 46(7):2675–2685CrossRef
8.
Zurück zum Zitat Li J, Liu Z, Nay L (2007) Effect of radial magnetic forces in permanent magnet motors with rotor eccentricity. Magn IEEE Trans 43(6):2525–2527CrossRef Li J, Liu Z, Nay L (2007) Effect of radial magnetic forces in permanent magnet motors with rotor eccentricity. Magn IEEE Trans 43(6):2525–2527CrossRef
9.
Zurück zum Zitat Kim U, Lieu D (1998) Magnetic field calculation in permanent magnet motors with rotor eccentricity: without slotting effect. Magn IEEE Trans 34(4):2243–2252CrossRef Kim U, Lieu D (1998) Magnetic field calculation in permanent magnet motors with rotor eccentricity: without slotting effect. Magn IEEE Trans 34(4):2243–2252CrossRef
10.
Zurück zum Zitat Kim U, Lieu D (1998) Magnetic field calculation in permanent magnet motors with rotor eccentricity: with slotting effect considered. Magn IEEE Trans 34(4):2253–2266CrossRef Kim U, Lieu D (1998) Magnetic field calculation in permanent magnet motors with rotor eccentricity: with slotting effect considered. Magn IEEE Trans 34(4):2253–2266CrossRef
11.
Zurück zum Zitat Rahideh A, Korakianitis T (2011) Analytical open-circuit magnetic field distribution of slotless brushless permanent-magnet machines with rotor eccentricity. Magn IEEE Trans 47(12):4791–4808CrossRef Rahideh A, Korakianitis T (2011) Analytical open-circuit magnetic field distribution of slotless brushless permanent-magnet machines with rotor eccentricity. Magn IEEE Trans 47(12):4791–4808CrossRef
12.
Zurück zum Zitat Michon M, Holehouse RC, Atallah K, Johnstone G (2014) Effect of rotor eccentricity in large synchronous machines. Magn IEEE Trans 50(11):1–4CrossRef Michon M, Holehouse RC, Atallah K, Johnstone G (2014) Effect of rotor eccentricity in large synchronous machines. Magn IEEE Trans 50(11):1–4CrossRef
13.
Zurück zum Zitat Michon M, Holehouse RC, Atallah K, Wang J (2014) Unbalanced magnetic pull in permanent magnet machines. In: Power electronics, machines and drives (PEMD), 7th IET International Conference, Manchester Michon M, Holehouse RC, Atallah K, Wang J (2014) Unbalanced magnetic pull in permanent magnet machines. In: Power electronics, machines and drives (PEMD), 7th IET International Conference, Manchester
14.
Zurück zum Zitat Zhu Z, Howe D, Bolte E, Ackermann E (1993) Instantaneous magnetic field distribution in brushless permanent magnet DC motors. I. Open-circuit field. Magn IEEE Trans 29(1):124–135 Zhu Z, Howe D, Bolte E, Ackermann E (1993) Instantaneous magnetic field distribution in brushless permanent magnet DC motors. I. Open-circuit field. Magn IEEE Trans 29(1):124–135
15.
Zurück zum Zitat Zhu Z, Howe D (1993) Instantaneous magnetic field distribution in brushless permanent magnet DC motors. II. Armature-reaction field. Magn IEEE Trans 29(1):136–142CrossRef Zhu Z, Howe D (1993) Instantaneous magnetic field distribution in brushless permanent magnet DC motors. II. Armature-reaction field. Magn IEEE Trans 29(1):136–142CrossRef
16.
Zurück zum Zitat Atallah H, Howe D, Mellor P, Stone D (2000) Rotor loss in permanent-magnet brushless AC machines. Ind Appl IEEE Trans 36(6):1612–1618CrossRef Atallah H, Howe D, Mellor P, Stone D (2000) Rotor loss in permanent-magnet brushless AC machines. Ind Appl IEEE Trans 36(6):1612–1618CrossRef
17.
Zurück zum Zitat Stefanita C-G (2012) Magnetism, basics and applications. Springer, Berlin, Heidelberg Stefanita C-G (2012) Magnetism, basics and applications. Springer, Berlin, Heidelberg
18.
Zurück zum Zitat Jackson JD (1998) Classical electrodynamics. Wiley, New YorkMATH Jackson JD (1998) Classical electrodynamics. Wiley, New YorkMATH
19.
Zurück zum Zitat Tautz H (1971) Wärmeleitung und Temperaturausgleich. Heat conduction and temperature compensation. Verlag Chemie GMBH, Weinheim Tautz H (1971) Wärmeleitung und Temperaturausgleich. Heat conduction and temperature compensation. Verlag Chemie GMBH, Weinheim
20.
Zurück zum Zitat Binder A (2012) Elektrische Maschinen und Antriebe. Electrical machines and drives. Springer, Berlin, HeidelbergCrossRef Binder A (2012) Elektrische Maschinen und Antriebe. Electrical machines and drives. Springer, Berlin, HeidelbergCrossRef
21.
Zurück zum Zitat Booker JF (1965) A table of the journal-bearing integral. J Basic Eng 87(2):533–535 Booker JF (1965) A table of the journal-bearing integral. J Basic Eng 87(2):533–535
Metadaten
Titel
Prediction of the static unbalanced magnetic pull in synchronous surface mounted permanent magnet machines
verfasst von
Robert Goraj
Publikationsdatum
17.10.2016
Verlag
Springer Berlin Heidelberg
Erschienen in
Electrical Engineering / Ausgabe 3/2017
Print ISSN: 0948-7921
Elektronische ISSN: 1432-0487
DOI
https://doi.org/10.1007/s00202-016-0452-8

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