| Abstract |
A new Simplified Direct Space Vector Modulation (SDSVM), based on a line-to-line space-vectordiagram, is proposed, in this paper, to control a three-level Neutral-Point-Clamped (NPC) Converterfor a standalone variable speed Wind Energy Conversion System (WECS). The frequency andmagnitude of the stator output voltage of the Doubly Fed Induction Generator (DFIG) are controlledand fixed at nominal values, despite the variable rotor speed, ensuring by that a continuous AC supplyfor three phase loads. The performance of the proposed SDSVM technique to control the standaloneDFIG based WECS is demonstrated through simulation results. The control strategy is implementedon a dSPACE DS 1104 board driving a 4.5 kW DFIG based wind system test bench. The obtainedexperimental results confirm the validity of the control. |
