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Modified Ripple-Correction-Control MPPT for Single-Stage Single-Phase Grid-Connected PV Inverters
Chaiyant Boonmee and Yuttana Kumsuwan
Abstract In this paper, a modified ripple correlation control (RCC) maximum power point tracking (MPPT) algorithm is proposed for a single-stage single-phase voltage source inverter (VSI), on a grid connected photovoltaic system (GCPVS). Unlike classic RCC methods, the proposed algorithm does not require the high-pass and low-pass filters or the increment of the ac component filter function in the voltage control loop. The simple arithmetic mean function is used to calculate the average value of the PV voltage, the PV power and the PV voltage ripples for the MPPT of the RCC method. Furthermore, there is very high accuracy and precision. The performance of the proposed algorithm for the single-stage single-phase VSI GCPVS is investigated through simulation and experimental results.
Keyword Single-stage single-phase voltage source inverter (VSI), grid connected photovoltaic system (GCPVS), maximum power point tracking (MPPT), ripple correlation control (RCC), arithmetic mean function
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