Output voltage control of the OVT inverter

Abstract

The  paper  presents  the  possibility  of  the  output voltage control of an OVT inverter. The idea of the OVT inverter construction is based on the orthogonal space vectors theory. The OVT inverter is built of two components two-level three-phase inverters: the main inverter (MI) and the auxiliary one (AI). The output voltage of the OVT inverter takes the shape of a stepped voltage analogous to the voltage generated by multilevel inverters. The paper demonstrates possible control methods of the output voltage  frequency  and  amplitude.  The  results  obtained  during simulation  studies  prove  that  the  output  voltage  essential parameters may be a function of the DC voltage and the control circuitry permits easy  defining a selection of voltage/frequency characteristics.