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[1, 2011] 

Journal of Electrical Engineering, Vol 62, 1 (2011) 3-10

VECTORIAL COMMAND OF INDUCTION MOTOR PUMPING SYSTEM SUPPLIED BY A PHOTOVOLTAIC GENERATOR

Messaoud Makhlouf – Feyrouz Messai – Hocine Benalla

   With the continuous decrease of the cost of solar cells, there is an increasing interest and needs in photovoltaic (PV) system applications following standard of living improvements. Water pumping system powered by solar-cell generators are one of the most important applications. The fluctuation of solar energy on one hand, and the necessity to optimise available solar energy on the other, it is useful to develop new efficient and flexible modes to control motors that entrain the pump. A vectorial control of an asynchronous motor fed by a photovoltaic system is proposed. This paper investigates a photovoltaic-electro mechanic chain, composed of a PV generator, DC-AC converter, a vector controlled induction motor and centrifugal pump. The PV generator is forced to operate at its maximum power point by using an appropriate search algorithm integrated in the vector control. The optimization is realized without need to adding a DC-DC converter to the chain. The motor supply is also ensured in all insolation conditions. Simulation results show the effectiveness and feasibility of such an approach.

Keywords: solar energy, optimization, photovoltaic generator, pumping, modelling, efficiency


[full-paper]


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