Estudio de la relación Eficiencia Vs THD en convertidor de potencia trifásico de puentes H en cascada con fuente común.

Abstract

The dc-ac conversion, seeking from direct current sources to obtain AC waves to power AC machines, most converters develop this conversion from strategies called PWM, these techniques lead to problems of harmonic distortion And switching. Getting a static and dynamic distribution of voltage between the switches becomes a problem that led to the development of the new family of converters, called multilevel converters. Multilevel power inverter technologies have reached a high level of development during the last decades and a great number of topologies of converters have been proposed. Today, multilevel inverters are becoming more popular in the industry, thanks to the increasing demand for power and power quality, the multi-level converter becomes an alternative due to its advantages in reducing harmonic distortion and low electromagnetic emission. Today, new ways of making investors more efficient are being investigated, focusing on fundamental issues such as command simplification, new algorithms to improve THD, new topologies and switching strategies.