A Novel Neutral Point Clamped Symmetrical Boost Inverters with Reduced Components

This paper presents a design and implementation of a new neutral point clamped boost symmetrical multilevel inverter. The configuration obtained as the combination of DC sources, floating capacitor, and semiconductor power switches to generate a 7-level basic inverter. The floating capacitor is connected between H-bridge inverter and neutral point, which increases the voltage output and doubles the voltage at the load. To generate a greater number of voltage output levels with the thirteen-level symmetrical inverter is proposed with two basic 7-level inverters. The proposed 13-level inverter is tested with non-linear and linear loads. The 13-level inverter is stable under dynamic load changes and suits for grid-connected and renewable energy applications. Numerical results along with experimental developments are carried out in the laboratory scale environment for verifying the developed prediction with IEC standards.