Title :
Modulation of three phase rectifier in connection With PMSG for maximum energy extraction
Author :
Peftitsis, Dimosthenis ; Adamidis, Georgios ; Fyntanakis, Athanasios
Author_Institution :
Electr. Machines & Power Electron. Lab., Kth-R. Inst. Of Technol., Stockholm, Sweden
Abstract :
This paper presents a maximum power point tracking (MPPT) method which is applied on a wind turbine with permanent magnet synchronous generator (PMSG). A three-phase switched mode rectifier (SMR) is connected with the three phase output of the PMSG. The SMR employs a modulation strategy which is based on the space vector modulation (SVM) technique. Thus, the three phase input voltage is divided in six equal intervals with respect to the zero crossing of the phase voltage and only two switches are switching in each one. A duty ratio D is introduced for each switch and is able to vary by DeltaD in order to control the peak current through each phase. By controlling the three phase currents, it is possible to adjust the rotational speed of the PMSG and consequently the extracted power. The ldquohill climbingrdquo algorithm has been used for achieving operation on the maximum power point (MPP). The whole system has been designed and simulated using Matlab/Simulink and simulation results are shown for a variety of DeltaD. Finally, a short discussion about the results is given.
Keywords :
permanent magnet generators; rectifiers; synchronous generators; wind turbines; Matlab-Simulink; hill climbing algorithm; maximum energy extraction; maximum power point tracking; permanent magnet synchronous generator; phase voltage; space vector modulation; three-phase switched mode rectifier; wind turbine; zero crossing; Phase modulation; Power generation; Rectifiers; Sensorless control; Switches; Synchronous generators; Wind energy; Wind energy generation; Wind speed; Wind turbines; Pulsed Power Converter; Renewable Energy Systems; Simulation; Synchronous Generator; Wind generator systems;
Conference_Titel :
Power Electronics and Applications, 2009. EPE '09. 13th European Conference on
Conference_Location :
Barcelona
Print_ISBN :
978-1-4244-4432-8
Electronic_ISBN :
978-90-75815-13-9