Filament representation of stator coils Field winding is Biot-Savart

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Augustus Cameron
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Power Conversion & Electromechanical Devices Medical Physics & Science Applications Transportation Power Systems Carmen-RM Model Generator model A very simplified generator model

1 Power Conversion & Electromechanical Devices Medical Physics & Science Applications Transportation Power Systems Carmen-RM Model Generator model A very simplified generator model 2-pole, no symmetry 3-phase winding connected to bridge and resistive load Filament representation of stator coils Field winding is Biot-Savart Model saved in simple carmen model.opc 2

2 Model geometry 3 Circuit 4

3 Tasks in this example Read in model and display groups Generate mesh Generate COMI file for control Create and run OP3 file Examine LOG file Examine solutions 5 Modeller Start the Modeller Read in the simple carmen model.opc file Select the view Hit the Clear all button Open the Group label tree, select rotor and hit Display button Click on Close 6

Rotor group 7 Wire frame and solid views

group and stator groups to the display using

4 Rotor group 7 Wire frame and solid views Click on The rotor body, coil and some surrounding air are visible Click on to restore the solid view Click on Add the gap group and stator groups to the display using a similar method to which the rotor group was displayed 8

Generate volume mesh Accept the default tolerance Model => Carmen settings

5 Display of groups Rotor and gap groups All groups 9 Mesh generation and analysis data Model => Generate surface mesh Accept the values in the dialog Model => Generate volume mesh Accept the default tolerance Model => Carmen settings Examine the data Note that it is set for rotational motion Commands => Command file editor 10

6 Control command file In the Command file editor, click on File -> New Carmen control file This presents a dialog that will create a COMI file to control the motion It can also control the circuits if required A tab is presented for each group (except gap) in the model In the stator group, set the Motion type as stationary In the rotor group, set the Motion type as speed and enter the Angle z value as 3000 (rpm) Set the Filename as control_carmen.comi 11 Control command file This produces a COMI file / Control commands for the group stator t $STRING ST_MOTIONCONTROL STATIONARY / Control commands for the group rotor $STRING RO_MOTIONCONTROL SPEED $CONSTANT #RO_OMEGAZ OMEGAZ 3000*2*PI/60 The value of angular speed is given in radians/second 12

7 Running the analysis Go back to the Modeller Model => Create analysis database Use the file name simple carmen model Opera Class.op3 Click on the Prepare and Solve button After the model starts to solve, launch the Post processor from the Manager Model => Launch Post-processor 13 Examining the LOG file In the Post processor, click on This works exactly the same way as in Opera-2d Pre and Post processor LOG files are interchangeable to allow 2d v 3d results to be compared Select simple carmen model Opera Class.log Click on the Apply button This is the current through the load resistor 14

8 Current through load resistor 15 Loading the model into the Post processor When the analysis is complete, click on Select file simple carmen model Opera Class.op3 This offers all the solutions that are in the database Select Case 2 (0.001 seconds) and click on Load and refresh Notice that the rotor has now turned Since the speed is 3000 RPM, it will turn 18 degrees in 1 millisecond 16

9 Geometry at seconds 17 Air gap flux density All the normal Post processor commands can be used with Carmen solutions Click on Fill in the dialog as below and select Evaluate and Plot for the radial air gap flux density at Z = 0 18

10 Radial air gap flux density 19 Loading another case Click on This offers the same dialog for selecting another case as when the database was originally opened Explore! 20

Solvers TOSCA, ELEKTRA, SCALA, CARMEN, SOPRANO, TEMPO, QUENCH, DEMAG, STRESS. Processor. Structure of Opera-3d. Opera-3d Training Course

Solvers TOSCA, ELEKTRA, SCALA, CARMEN, SOPRANO, TEMPO, QUENCH, DEMAG, STRESS. Processor. Structure of Opera-3d. Opera-3d Training Course Power Conversion & Electromechanical Devices Medical Physics & Science Applications Transportation Power Systems Structure of Opera-3d Modeller Conductors Pre-Processor Processor Solvers TOSCA, ELEKTRA,