Performance of Wind Energy Conversion System with Parallel Wind Turbines Topology

Abstract

Worldwide, a significant growth has been noticed in wind turbine installed capacity which encourages the exploration of new Wind Turbine topologies and developed it. In this paper, a parallel connected Wind Turbine generation units based on variable speed directly coupled Permanent Magnet Synchronous Generator (Type-4) system is proposed. The proposed system is connected to grid source via a common back to back DC link connection between generating machine side power converter and grid side inverter. The modeling and control strategies for the proposed system is investigated. The controllers of generating machine-side and grid-side converters worked concurrently to meet unity power factor operation and under grid fault operation along with low voltage ride through capability. Two units of parallel connected Wind Turbine generation system with their respective control strategy and single grid side inverter along with common back to back DC link have been simulated in MATLAB Simulink using SimPowerSystem toolbox. The successfulness of the proposed system and their control strategies is verified by its simulation results.