High performance adaptive maximum power point tracking technique for off-grid photovoltaic systems

Abstract

Solar photovoltaic (PV) energy has met great attention in the electrical power generation field for its many advantages in both on and off-grid applications. The requirement for higher proficiency from the PV system to reap the energy requires maximum power point tracking techniques (MPPT). This paper presents an adaptive MPPT of a stand-alone PV system using an updated PI controller optimized by harmony search (HS). A lookup table is formed for the temperature and irradiance with the corresponding voltage at MPP (VMPP). This voltage is considered as the updated reference voltage required for MPP at each temperature and irradiance. The difference between this updated reference voltage at MPP and the variable PV voltage due to changing the environmental conditions is used to stimulate PI controller optimized by HS to update the duty cycle (D) of the DC–DC converter. The temperature, irradiance, and corresponding duty cycle at MPP are utilized to convert this MPP technique into an adaptive one without the PI controllers' need. An experimental implementation of the proposed adaptive MPPT is introduced to test the simulation results' validity at different irradiance and temperature levels.

UNIFIED POWER FLOW CONTROLLER CONTROL STRATEGIES for POWER FLOW

“…These properties are of more concern for systems, with high dimension and composite interactions, referred to generally nonlinear systems. 2,3 The nonlinearities and complexities can cause computational and analytical difficulties not only in modeling, control, or optimization, but also in the fundamental issues of stability, controllability, and observability. It is therefore natural to seek techniques that reduce the computational effort.…”

“…1 Adding to the complexity of these systems is the inclusion of some renewable energy sources like wind and photovoltaic. 2,3 As a result, the power system needs some flexibility to operate through some controllable devices. Among these devices, Flexible AC transmission systems (FACTS).…”

Arithmetic optimization algorithm based maximum power point tracking for grid-connected photovoltaic system

“…However, it is necessary to select the optimal gains of the PI controller properly 38 . In the last few years, various optimization techniques were employed to obtain gains of the PI controller 39 , including the Marine Predators Algorithm 40 , Particle Swarm Optimization 41 , Grey Wolf Optimization 42 , Henry Gas Solubility Optimization 43 , Grasshopper Optimization Algorithm 44 , Ant Lion Optimizer 45 , Genetic Algorithm 46 , and Enhanced Artificial Bee Colony Algorithm 47 in different applications.…”

Optimization of Proportional Resonant and Proportional Integral Controls Using Particle Swarm Optimization Technique for PV Grid Tied Inverter

“…A maximum power point tracking (mppt) algorithm, is formulated for a DC converter integrated standalone PV system using a classical PID control [17]. A PSO optimized PID mppt controller is discussed by Chamundeeswari and Seyezhai [18], while an adaptive PID mppt algorithm is proposed by Banakhr and Mosaad [19] for off grid PV system.…”