A Wind-Water Pump Driven by a Self Excited Induction Generator Installed in Stand-Alone

This paper exposes a control strategy of a wind driven-Self Excited Induction Generator, (SEIG) that operates in rural areas. The proposed conversion system aims to feed a centrifuge water pump trained by an induction motor (IM). Given that the random fluctuations in load and in wind speed are the most dominant characteristic of the stand-alone operating conditions, we propose to maintain constant the stator voltage and the output frequency of the SEIG by the connection of a STATCOM in the stator SEIG terminals. The regulation process is based on the control of the active and reactive power flow which affects directly the modulation index and the phase delay of the inverter input. The proposed method is developed and simulated in Matlab/Simulink using a SEIG of 1.5kW. Interesting results are extracted from the developed model which show the efficiency of the proposed control strategy.