Predicting the transient effects of PWM voltage waveform on the stator windings of random wound induction motors

In this paper, the effect of PWM voltage waveform on the stator windings of random wound cage induction motors is studied. A method of estimating the distributed circuit parameters of the motor using finite element analysis is described. From these parameters, an equivalent circuit is formed with distributed capacitances and inductances. This circuit is then used for simulation using SABER in order to predict the voltage distribution among the turns and coils during a PWM wavefront. The effect of switching time of the inverter on the voltage distribution is also simulated. In order to validate the method adopted, the simulated results are compared with experimental results.

[1]  Yifan Tang,et al.  Analysis of steep-fronted voltage distribution and turn insulation failure in inverter fed AC motor , 1997, IAS '97. Conference Record of the 1997 IEEE Industry Applications Conference Thirty-Second IAS Annual Meeting.

[2]  K. J. Cornick,et al.  Calculation of machine winding electrical parameters at high frequencies for switching transient studies , 1996 .

[3]  Gary L. Skibinski,et al.  Effect of surge voltage risetime on the insulation of low voltage machines fed by PWM converters , 1997, IAS '97. Conference Record of the 1997 IEEE Industry Applications Conference Thirty-Second IAS Annual Meeting.

[4]  Russel J. Kerkman,et al.  Cable characteristics and their influence on motor over-voltages , 1997, Proceedings of APEC 97 - Applied Power Electronics Conference.

[5]  Ali Abur,et al.  Analysis of the effect of feeder cable on the stator winding voltage stress in a PWM induction motor drive , 1997, Proceedings: Electrical Insulation Conference and Electrical Manufacturing and Coil Winding Conference.

[6]  Deepak Divan,et al.  Low stress switching for efficiency , 1996 .

[7]  C. J. Melhorn,et al.  Transient effects of PWM drives on induction motors , 1995, Proceedings of 1995 Industrial and Commercial Power Systems Conference.

[8]  David Leggate,et al.  Interaction of drive modulation and cable parameters on AC motor transients , 1996, IAS '96. Conference Record of the 1996 IEEE Industry Applications Conference Thirty-First IAS Annual Meeting.

[9]  B. Mokrytzki.  Filters for adjustable frequency drives , 1994, Proceedings of 1994 IEEE Applied Power Electronics Conference and Exposition - ASPEC'94.

[10]  S. Sul,et al.  A novel filter design for suppression of high voltage gradient in voltage-fed PWM inverter , 1997, Proceedings of APEC 97 - Applied Power Electronics Conference.

[11]  A. von Jouanne,et al.  Application issues for PWM adjustable speed AC motor drives , 1996 .

[12]  D.K. Sharma,et al.  Voltage Distribution among the Coils and Turns of a Form Wound AC Rotating Machine Exposed to Impulse Voltage , 1986, IEEE Transactions on Energy Conversion.

[13]  A. von Jouanne,et al.  Voltage distribution in the windings of an AC motor subjected to high dV/dt PWM voltages , 1995, Proceedings of PESC '95 - Power Electronics Specialist Conference.

[14]  P. G. McLaren,et al.  Multiconductor transmission-line model for the line-end coil of large AC machines , 1985 .

[15]  Ali Abur,et al.  Simulation of voltage stress on the inverter fed induction motor winding supplied through feeder cable , 1997, IAS '97. Conference Record of the 1997 IEEE Industry Applications Conference Thirty-Second IAS Annual Meeting.

[16]  A. Hussein,et al.  Modeling and simulation of traveling waves in induction motor drives , 1997, Proceedings of APEC 97 - Applied Power Electronics Conference.

[17]  David B. Hyypio,et al.  Simulation of cable and winding response to steep-fronted voltage waves , 1995, IAS '95. Conference Record of the 1995 IEEE Industry Applications Conference Thirtieth IAS Annual Meeting.

[18]  E. Persson,et al.  Transient effects in application of PWM inverters to induction motors , 1991 .

[19]  Russel J. Kerkman,et al.  PWM inverters and their influence on motor overvoltage , 1997, Proceedings of APEC 97 - Applied Power Electronics Conference.

[20]  A. H. Bonnett,et al.  Analysis of the impact of pulse-width modulated inverter voltage waveforms on AC induction motors , 1994, Proceedings of IEEE Pulp and Paper Industry Conference.

[21]  Gary L. Skibinski,et al.  Design methodology of a cable terminator to reduce reflected voltage on AC motors , 1996, IAS '96. Conference Record of the 1996 IEEE Industry Applications Conference Thirty-First IAS Annual Meeting.

[22]  A. von Jouanne,et al.  Filtering techniques to minimize the effect of long motor leads on PWM inverter fed AC motor drive systems , 1995, IAS '95. Conference Record of the 1995 IEEE Industry Applications Conference Thirtieth IAS Annual Meeting.