Setting Up Analysis Parameters for an Adjust-Speed Synchronous Machine

To define the solution data:

  1. Right-click Analysis in the project tree, and click Add Solution Setup to open the Solution Setup window.
  2. Click the General tab. The Operation Type is automatically set to Motor for this machine type.
    3. Note: To enable selection of Generator for Adjust-Speed Synchronous Machines, the machine Control Type must be set to AC in its Properties window.
    1. If Motor was selected for the Operation Type, 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.


    2. If Generator was selected for the Operation Type, select the Load Type used in the generator from the following options: Infinite Bus or Independent Generator.

      Infinite Bus

      When the generator is connected to an infinite bus of the power system, the terminal voltages remain constant and the output power is determined by the output currents.

      Independent Generator

      The generator supplies electrical power to a load inductor. For an AC generator, the resistance and inductance of the load inductor are determined by the rated output power, the rated voltage, and the rated power factor. For a DC generator, the resistance of the load resistor is determined by the rated output power and the rated voltage.

  3. Enter the output power developed at the shaft of the motor in the Rated Output Power field.
  4. Enter either the RMS line-to-line voltage (for AC control type), or the DC voltage (for DC and PWM control types) in the Rated Voltage field.
  5. Enter the desired output speed of the motor at the load point in the Rated Speed field.
  6. Enter the temperature at which the system functions in the Operating Temperature field.
  7. Click the Adjust-Speed Synchronous Machine tab, and select either Time or Frequency as the Domain for the solution.
  8. Click OK to close the Solution Setup window.

Related Topics 

Solution Data for Adjust-Speed Synchronous Machines