A Novel Maximum Power Tracking by VSAS approach for Permanent Magnet Direct Drive WECS
Résumé
This paper presents control schema of a permanent magnet synchronous generator (PMSG) system with two controllers for generator side and grid side converters in a variable speed wind turbine (VSWT) application. In generator side converter, the most efficient algorithms designed to track the maximum power point (MPP) for catching the maximum wind power is reviewed. For this approach we then design a new maximum power point tracking (MPPT) algorithm using the Variable Structure Automatic Systems approach (VSAS).The proposed approach leads efficient algorithms as shown in this paper by the analysis and simulations. The obtained results show clearly the superiority of the Modified Enhanced Perturb and Observe (MEPO) technique. Using this MPPT method the generated power by the turbine is considered to be, in terms of power control, an auxiliary source feeding a grid. In the grid side converter, active and reactive power control has been achieved by controlling d-axis and q-axis grid current components respectively. The simulation results show the efficiency and reliability of the control strategy proposed in this paper.
Origine : Publication financée par une institution
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