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Star-Delta parameters for ACIM

Michal Elias
Intellectual 330 points

Hello,


Is it possible to recalculate values found by InstaSPIN during Y (star) configuration of the motor to get values for Delta configuration? Or the learning algorithm with locked rotor would have to be run again?


Thank you!

  • 0
    TI__Expert 5180 points

    Hi,

    Not sure I understand the question.

    InstaSPIN identifies the Y equivalent of the motor. If the motor is in fact configured in Y, then the parameters would match with the spec of the motor. If the motor is in Delta, then InstaSPIN would identify the Y equivalent of the Delta parameters.

    -Jorge

  • 0 in reply to Jorge Zambada
    Intellectual 330 points

    Hi, let me rephrase it:

    I have a motor that is configured in Y. I will run identification in this configuration.

    Now I reconnect motor to Delta, without telling that to the controller. At this moment the old identification constants will not be valid. Is there a way how to recalculate old Y parameters to get Delta equivalent without re-running the ID? (Rs,Rr, Ls, flux..)


    Thanks.

  • 0 in reply to Michal Elias
    TI__Expert 5180 points

    That's really not supported. What's supported is to identify the motor with the configuration the motor will be used. If the configuration is changed, please re-identify the motor.

    -Jorge