Setting Up Analysis Parameters for a Three-Phase Induction Motor

To define the solution data:

  1. To open the Solution Setup window, right-click Analysis in the project tree, and click Add Solution Setup.
  2. Click the General tab. The Operation Type is automatically set to Motor for this machine type.
  3. Select the Load Type used in the motor from the following options:

    Const Speed

    The speed remains constant in the motor.

    Const Power

    The output power remains constant in the motor.

    Const Torque

    The torque remains constant regardless of the speed. In this case, Tload = Trated, given by the output power divided by the given rated speed.

    Linear Torque

    The torque increases linearly with speed. In this case, Tload = Trated * (n/nrated) where Trated is given by the output power divided by the given rated speed.

    Fan Load

    The load varies nonlinearly with speed. In this case, Tload = Trated * (n/nrated)2 where Trated is given by the output power divided by the given rated speed.

  4. Enter the output power developed at the shaft of the motor in the Rated Output Power field.
  5. Enter the RMS line-to-line voltage in the Rated Voltage field.
  6. Enter the desired rotor speed in the Rated Speed field. When input Rated Speed is less than the Synchronous Speed, the machine operates as a motor. When input Rated Speed is greater than the Synchronous Speed, the machine operates as a generator. For an induction generator, the rated performance will be calculated at the input Rated Speed with the three-phase windings connecting to infite bus.
  7. Enter the temperature at which the system functions in the Operating Temperature field.
  8. Click the Three-Phase Induction Motor tab.
  9. Enter the electrical line frequency in the Frequency field, and select the units.
  10. Select the Winding Connection from the following options:
  1. Click OK to close the Solution Setup window.

Related Topics 

Solution Data for Three-Phase Induction Motors