Voltage source inverter

In this paper, the different types of voltage sourse inverters are studied. The voltage source inverters are the main component of the variable frequency drives(VFD). In the medium voltage variable speed drive market, the various techniques have progressed with constituents, design, and reliability. The two foremost types of drives are notorious as voltage source inverter (VSI) and current source inverter (CSI). In industrial markets, the VSI design has proven to be more efficient, most reliabile and faster dynamic response, and capable of running motors deprived of de-rating.