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Thrust ripple research on linear induction motorsChinese Full Text

NIE Shi-xiong;SUN Zhao-long;MA Wei-ming;MA Ming-zhong;XU Jin;LU Jun-yong;ZHANG Yu-xing;National Key Laboratory for Vessel Integrated Power System Technology,Naval University of Engineering;

Abstract: End effect,which results in the thrust ripple of different frequencies,is the inherent characteristic of linear induction motor( LIM). A study of thrust ripple on LIM was conducted. First,thrust ripple frequencies was obtained according to electromagnetic thrust calculation formula. Secondly,theory analysis and analytic calculation for distribution of inductive eddy current on secondary with a view to dynamic longitudinal end effect was presented based on magnetic circuit. Then,according to inductive eddy current on secondary,the expression of thrust ripple value at the frequency of twice of the slip frequency was obtained. Lastly,theory analysis and calculation results were validated by test data from the long primary DLIM system capable of producing 900 k N of force,operating at the 20 MW peak power level. The result indicates that there exists thrust ripple at twice the slip frequency and work frequency. Thrust ripple scale of twice the slip frequency,which results from dynamic longitudinal end effect,is related to slip frequency and secondary poles.
  • DOI:

    10.15938/j.emc.2015.05.001

  • Series:

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  • Classification Code:

    TM346

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