Advanced Cascaded H-Bridge & Modular Multilevel Converter Applied to a Wind Energy Generation

Abstract

As the number of renewable energy sources increases worldwide, wind energy is one of themwho stand out from the crowd. With the development of technology, wind turbine projects have had a significant impact increased their capacity, reaching a higher capacity mainly for offshore installations. One of the most important challenges are power Converter, specifically semiconductor components that have limited voltage and current characteristics. This gave birth to the concept of multilevel Converter , which increased the voltage level and thus carried a higher power level. Apart from the application In multilevel converter , it is possible to increase the voltage and power level by using an generator. This context was investigated in this work the use of a multi-level converter (three-level cascaded H-bridge in series), which controlsan open coil of Generator Analysis of the proposed system was developed dynamicallySimulation of 1.71 MW WECS using PLECS software including basic system modeling components: generator, power converters, system control, filter and grid connection. The score show that the goal of achieving 5-level behavior of the output voltage is achieved by using OEW connection. In addition, a low harmonic concentration is achieved in the machine flow as such current supplied to the grid. In addition, it is possible to control the distribution of power between converter, indicating that lower power converter can be connected in a higher direction Wind power