Reduction of the surge voltage at motors fed from IGBT inverter drives by PWM correction

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Author(s)

Abstract

In this paper, we analyze the conditions when surge voltage peaks higher than 2 p. u (2 times the inverter DC link voltage) occur at the induction motor terminals fed by PWM inverters. These overvoltages can reach 3 p. u or more and posse a threat for the motor insulation. Experimental results and simulations are used to study the dependence of voltage at the motor terminals from the application conditions (cable and motor parameters). Anew algorithm for correction of the PWM, which reduce the motor terminal peak voltage under 2 p. u, is proposed and tested successfully in different PWM schemes. Further more a method for calculation of the minimum allowed short time intervals between two consecutive pulses, is given and its results are confirmed from the experiment. Advantages of the new proposed PWM correction method are that it can be implemented at no additional costs, independently from the PWM mode (Sinusoidal PWM, Space Vector PWM, Discrete PWM) used_??_ and without changing the performance of the drive. The application of this method improves the switching reliability of the drive.

Journal

  • IEEJ Transactions on Industry Applications

    IEEJ Transactions on Industry Applications 122(5), 475-480, 2002-05-01

    The Institute of Electrical Engineers of Japan

References:  11

Cited by:  1

Codes

  • NII Article ID (NAID)
    10008218084
  • NII NACSIS-CAT ID (NCID)
    AN10012320
  • Text Lang
    ENG
  • Article Type
    Journal Article
  • ISSN
    09136339
  • NDL Article ID
    6152733
  • NDL Source Classification
    ZN31(科学技術--電気工学・電気機械工業)
  • NDL Call No.
    Z16-1608
  • Data Source
    CJP  CJPref  NDL  J-STAGE 
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