Figure 2 shows that as the flux and the commutator number increase, the output terminal voltage increased and the wave has improved dc quality. Many design factors can be varied according to a user's command, and the result of different designs can be accessed immediately. It becomes very convenient and clear for students to understand new conceptual parametric variance. The interface is simple with a button menu. To change parameter, it needs only to type in the text area and click the button.
Magnetic fields exist in a DC machine.
As the generator or motor action starts a current flow on the windings, magnetic fields are generated and interacts with the main fields. This reactive field generates many unexpected results in DC machine behavior. The main result is the shifting of neutral axis of the total fields. Students can identify this action by changing parameters. Figure 4 shows the result of larger armature current interacting with the main fields.