A New Proposed Algorithm Based Variable Wind Turbine Energy Conversion System

This paper represents a new proposed control methodology for tracking the maximum power point for variable wind speed turbine with grid connected system based upon the hill climb searching (HCS) algorithm. This is a fast and continuous tracking algorithm which uses β as fact value of a main variable which is remains constant(=βMPP) for given maximum power point of WECS irrespective of variable wind velocity. The constant βMPP has value known in advance. This algorithm operates in two stages. In the first stage, the operating point to lies within a narrow band with limits βmax and βmin by using large steps while in the second stage, by using the “perturb and observe� method exact MPP is tracked. So due to this superior algorithm methodology no extra hardware and sensor are required for the measurement as existing method. Hence cost will reduced. Also time taken to reach MPP will reduced with this proposed algorithm of WECS as of existing algorithms. With this proposed algorithm dynamic and steady-state performance of WECS increased. This proposed control strategy is designed in MAT Lab and simulation results show that the controllers can extract maximum power and regulate the voltage and frequency under varying wind and load conditions.