Analysis on the Topology and Control of Power Electronics Converters for Wind Energy Conversion Systems

Abstract

Power Electronics converters become nowadays the most important part in Wind Energy Conversion Systems (WECS). They are an intermediate between the generator and grid to achieve low cost, high power density and reliability. This paper deals with the analysis on the topology and control of the most power Electronics Converters for generators using in WECS. Design, (dis)advantages, and market penetration are analyzed and discussed. The control includes maximum power point tracking, dc bus voltage control, balancing of the dc capacitor voltages, and reactive power generation are also analyzed. Simulations have been carried out using MATLAB/SIMULINK on the control strategies for the case of back to back converter with Pulse Width Modulation (PWM) demonstrating its good potential to meet the grid connection requirements. Keywords: Wind Energy Conversion Systems (WECS), power electronics converters, back to back converter, maximum power point tracking, Pulse Width Modulation (PWM).