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The present work tries to investigate and exploit the maximum energy delivered by a solar photovoltaic, to power a double star induction motor (DSIM) through two voltages inverters of five levels NPC structure. The proposed cascade consists of two photovoltaic's sources-two inverters voltages of five-level NPC structure-DSIM. This study shows the volatility of the input voltages of the two inverters and then the instability of supply voltages of the machine, due to the nature of the source issued by the photovoltaic generators. The results also show significant levels of ripple magnitudes with a large response time. In order to stabilize the input voltages of the multilevel inverters, a bridge clamping has been proposed. Using this bridge, the voltages become stable, thus improving the performance of the DSIM. These results are very promising for high power and high voltage in the field of electric traction.
Date of Conference: 18-22 Dec. 2010