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• In the resistive load case, the angle ignition variation to the thyristors is comprised between zero and π, the thyristors of KR being in conduction on period α ÷ π, for the

• At the end of simulation is pressed the button (Iesire) for application exit, after that is being able to choose, from the main simulation window, another simulation to run (Figure 29).

In electrical devices, the AC switch controller is used for asynchronous motor speed change by changing the supply voltage and to the asynchronous motor startup by varying the voltage

These types of static converters are used to control the voltage applied to the stator windings of a cage induction motor or to modify the effective rotor resistance of a wound induction motor. In first case, the converter is connected in series with the stator windings, and in second case in

positive semi-alternate and π þ α ÷ 2π for the negative alternate.

Figure 28. The waveforms area for the three-phase AC switch controllers with resistive load.

4. Conclusions

between zero and nominal value.

Figure 29. The button for application exit (Iesire).

134 Science Education - Research and New Technologies

parallel with a resistance.

Marius-Daniel Marcu\*, Popescu Florin Gabriel and Niculescu Titu

\*Address all correspondence to: mariusmarcu@upet.ro

University of Petrosani, Romania
