Three Phase Inverter - 180 Degree Conduction Mode
This technical article illustrates the working of the three phase power electronics inverter in the 180 degree conduction mode. The operation of the six thyristors and the associated waveforms are shown for easier understanding.
Three phase inverters are primarily used in medium to high power applications. Modern three phase inverters are used for precise control of industrial drives, photovoltaic power generation, and motor drives, to name a few. These inverters also offer additional features such as voltage control and frequency control.
The three phase inverters employ at least six thyristor switches, as shown in Fig. 1. Such a power electronics converter transforms a dc input into a three phase ac output.