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[2, 2015] 

Journal of Electrical Engineering, Vol 66, 2 (2015) 61-69 DOI: 10.1515/jee-2015-0010

DISCRETE-TIME INTEGRAL SLIDING MODE CONTROL WITH DISTURBANCES COMPENSATION AND REDUCED CHATTERING

Santolo Meo – Vincenzo Sorrentino

   In the paper a new discrete-time integral sliding mode control (DISMC) with disturbances compensation and reduced chattering for grid-connected inverter is proposed for active and reactive power regulation. Differently by many SMC proposed in literature that have a time-continuous formulation in spite have been implemented with digital processor, the proposed DISMC is fully formulated in discrete-time, taking into account the effects introduced by a microprocessor-based implementation. Constant converter switching frequency is achieved by using space vector modulation, which eases the design of the ac harmonic filter. In the paper, after a detailed formalization of the proposed control algorithm, several numerical and experimental results on a three-phase grid-connected inverter prototype are shown, proving the effectiveness of the control strategy.

Keywords: sliding mode control, grid-connected inverter, renewable energy, PV~inverter


[full-paper]


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