AVERAGE CURRENT MODE CONTROL OF A VOLTAGE SOURCE INVERTER CONNECTED TO THE GRID: APPLICATION TO DIFFERENT FILTER CELLS

Mustapha Raoufi - Moulay Tahar Lamchich

   In this paper the average current mode control of a grid connected inverter is investigated. Two control loops are used: the outer one controls the power flow from the source generator to the grid and the inner one controls the grid currents. This control method is applied to two system configurations with different filter cells, L- and LCL-filter. The comparison shows the effectiveness of the last configuration in terms of harmonics rejection. Simulations of the proposed method show performances in both transient and steady state.

Keywords: grid connected inverter (VSI), passive filter design, LCL filter, average current mode control (ACMC)

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