A New Topology for 81-Level Hybrid Multilevel Inverter with Reduced Number of Power Electronic Components and Voltage Boosting Capability

摘要

In this paper, a new topology is implemented to get high number of levels at the output with reduced number of switches, gate driver circuits. The size, complexity and power consumption in the gate driver circuits is also reduced. In this, the Hybrid Bridge is used to get 81-level output voltage with the use of amplitude modulation. Multilevel inverters can operate not only with PWM techniques b ut also with amplitude modulation will improves significantly the quality of the output voltage waveform. With the use of amplitude modulation, low frequency voltage harmo nics are perfectly eliminated. This paper presents a single-phase 81-level Hybrid multilevel inverter for a grid-connected system which is used for reactive power compensation. The proposed topology has the feature like boost output voltage capability along with capacitor voltage balancing. Simulation results obtained from Matlab/Simulink to simulate 81-levels of voltage with only four power supplies and sixteen transistors