SVPWM Based Converter for PMSG Based Wind Energy Conversion System

摘要

At present, the trend of electricity generation is taking a diversion towards renewable energy sources due to their availability, cleanliness and less pollution. The ever increasing power demand has led to the development of Hybrid energy systems for Distributed Generation applications. Most of these hybrid systems include Wind Energy Conversion System (WECS) because of the ease of generation and availability of wind. Many types of generators are designed for the WECS. Due to the advantages like higher efficiency and low maintenance of Permanent Magnet Synchronous Generator (PMSG) [1], a PMSG based WECS is considered in this paper. It is also observed that, a very high number of appliances or loads are operating directly on DC. The potential to use DC directly from WECS requires proper rectification (from AC to DC) of power when considered for DC grid applications or for storage in batteries. Literature shows that, for the rectification process the researchers have applied basic Sinusoidal Pulse Width Modulation (SPWM) technique to the WECS or a WECS is designed with Brushless Permanent Magnet DC Generator (BLPMDC) to obtain DC power. In this paper a converter is designed for rectification of the power developed by the WECS and an attempt is made to apply Space Vector Pulse Width Modulation (SVPWM) for switching of rectifier to obtain a pure DC supply from WECS.