Simulation of Cascaded H-Bridge Multilevel Inverter Using MATLAB/SIMULINK

摘要

The growing demand for power finds wide range of applications in hybrid/electric vehicles, portable consumer device, industrial control systems, and solar power systems. Since a multilevel inverter has low harmonics, these are widely used in energy distribution and control. Cascaded or H-Bridge inverter topology is preferred the most because of simple control, reliability and capacitor balance. Sinusoidal Pulse Width Modulation (SPWM) is commonly implemented in an inverter circuit since it improves efficiency. This paper consists of the basic theory of a single phase and three phase multilevel inverter of different levels using SPWM technique, its Simulation model, result and its switching pattern. The design is made by the H-bridge topology using MOSFET as a switch. The simulation for the system is constructed with the help of MATLAB/SIMULINK.