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IMD program is a parameter estimation tool for induction motors. Most of the time, the information you obtain from induction motor manufacturers are rated torque, maximum torque, starting current or locked-rotor current and/or power factor. Equivalent circuit parameters for the motor oftentimes are not published in the motor nameplate or technical data sheets.
What IMD does is to estimate the motor circuit parameters from the torque-current or speed-torque characteristics. You may need to do a little bit of tuning to obtain the motor-circuit parameters that matches the speed-torque characteristic curve.
