Improved performance low‐cost incremental conductance PV MPPT technique

Abstract

Variable-step incremental conductance (Inc.Cond.) technique, for photovoltaic (PV) maximum power point tracking, has merits of good tracking accuracy and fast convergence speed. Yet, it lacks simplicity in its implementation due to the mathematical division computations involved in its algorithm structure. Furthermore, the conventional variable step-size, based on the division of the PV module power change by the PV voltage change, encounters steadystate power oscillations and dynamic problems especially under sudden environmental changes. In this study, an enhancement is introduced to Inc.Cond. algorithm in order to entirely eliminate the division calculations involved in its structure. Hence, algorithm implementation complexity is minimised enabling the utilisation of low-cost microcontrollers to cut down system cost. Moreover, the required real processing time is reduced, thus sampling rate can be improved to fasten system response during sudden changes. Regarding the applied step-size, a modified variable-step size, which depends solely on PV power, is proposed. The latter achieves enhanced transient performance with minimal steady-state power oscillations around the MPP even under partial shading. For proposed technique's validation, simulation work is carried out and an experimental set up is implemented in which ARDUINO Uno board, based on low-cost Atmega328 microcontroller, is employed

Review Perbandingan Teknik Maximum Power Point Tracker (MPPT) untuk Sistem Pengisian Daya menggunakan Sel Surya

“…Pada gambar kurva dibawah menunjukkan bahwa karakteristik P-V dan I-V mempunyai kurva yang tidak linear, hal ini bergantung pada temperatur dan tingkat iradiasi matahari, tiap-tiap titik dari kurva tersebut mewaliki maximum power point (MPP) (Paz & Ordonez, 2014;Zakzouk, Elsaharty, Abdelsalam, Helal, & Williams, 2016). (Zakzouk et al, 2016).…”

Practical Implementation of the Backstepping Sliding Mode Controller MPPT for a PV-Storage Application

“…These rechargeable electrochemical devices are widely employed in many applications such as PV storage systems [1,4,5]. Several MPPT methods have been attempted to track the MPP in PV systems such as perturb and observe (P&O) [6,7], the incremental conductance (INC) method [8][9][10], the neural network controller (NNC) [11] and the fuzzy logic controller (FLC) [12][13][14]. The control parameter of the P&O technique is perturbed due to a small variation of the step size.…”

Fuzzy Controller Based Solar PhotovoltaicSystem, Fuel Cell Integration forConditioning the Electrical Power

“…[1]. Solar power can be obtained using various maximum power tracking techniques [2][3] such as perturb and observation, incremental conductance method, modified maximum power point tracking methods, soft computing based maximum power point tracking method etc.…”