Experimental system of control techniques to drive three-phase DC/AC converters

This paper presents a system which works as a pulse generation stage to drive three-phase DC/AC power converters, also named inverters. This pulse generation stage is a multiple scheme because it is based on the most important control techniques to drive inverters, such as PWM techniques, and was developed in a personal computer. The system has two main operation modes: visualization or simulation and real or emulation. The first method allows the selection of one technique to form a menu and see the pulses generated to turn-on and turn-off the power semiconductor of the inverter, phase voltage waveforms, line voltages waveforms and spectrum of harmonic content of voltages waveforms according to data input entered previously. The second mode works as the first, but here the pulses generated are used to drive an DC/AC power converter connected to a computer through an interface. Results are presented for both operating modes.