Setting Up Analysis Parameters for a General DC Machine

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 in the Rated Output Power field.
  5. Enter the applied or output rated DC voltage in the Rated Voltage field.
  6. Enter the given rated speed in the Rated Speed field.
  7. Enter the temperature at which the system functions in the Operating Temperature field.
  8. Click the DC Machine tab.
  9. Select one of the following from the Field Exciting Type drop-down menu:
  1. Enter the Exciting Voltage, and select the units.
  2. Enter the Series Resistance, and select the units.
  3. To automatically obtained the Exciting Voltage and Series Resistance via the Rated Speed, rather than entering their values, then select the Determined by Rated Speed check box.
  4. Click OK to close the Solution Setup window.

Related Topics 

Solution Data for General DC Machines