This paper presents an improved maximum power point tracking (MPPT) controller for PV systems. An Artificial Neural Network and the classical P&O algorithm were employed to achieve this objective. MATLAB models for a neural network, PV module, and the classical P&O algorithm are developed. However, the developed MPPT uses the ANN to predict the optimum voltage of the PV system in order to extra...

In this article we formalize a quotient module of Z-module and a vector space constructed by the quotient module. We formally prove that for a Z-module V and a prime number p, a quotient module V/pV has the structure of a vector space over Fp. Z-module is necessary for lattice problems, LLL (Lenstra, Lenstra and Lovász) base reduction algorithm and cryptographic systems with lattices [14]. Some...

The solar photovoltaic (PV) systems are facing serious problems due to unavoidable losses in their system, leads to more devation of output power from the input power level. This effect is known as a mismatch effect and is available in PV systems. Many losses are encountered in PV system and it is difficult to minimize such losses. In this paper, the influence of thermal effect on the solar PV ...

Maximum power point tracking (MPPT) is a technique that grid tie inverters, solar battery chargers and similar devices use to get the maximum possible power from one or more solar panels. In this paper the simulation result of the P&O algorithm and the conventional maximum power point tracking technique compared with Intelligent Control (fuzzy logic controller-FLC). In fact the target of this m...

This work focuses on a program developed in MATLAB/Simulink of 36W photovoltaic module. This program is based on mathematical equations and is described through an equivalent circuit including a photocurrent source, a diode, a series resistor and a shunt resistor. The developed program allows the prediction of PV module behavior under different physical and environmental parameters. This progra...

This experimental study deals with the investigation of chaos during the regulation of output voltage of solar photovoltaic module. The Cuk converter is used as an interface between solar PV module and load, since the Cuk converter is the good choice for the maximum power point tracking (MPPT) circuits. The input voltage of the converter is controlled in order to regulate the operating point of...

Our research team measured the performance of 130 amorphous silicon (a-Si) photovoltaic (PV) modules and 17 crystalline PV modules at 145 homes in rural Kenya. We also purchased 14 a-Si modules in Nairobi that we tested at outdoor testing facilities in the US and Kenya. We used an outdoor IV test method that has an accuracy of ±5% and a repeatability of ±5% for clear sky conditions. The large m...

The recent large scale deployment of multi crystalline silicon photovoltaic (PV) modules in the field has risen the need for indepth studies of degradation in a fast and efficient manner. In this context, different standard test procedures as specified under IEC 61215 viz. thermal cycling (TC), humidity freeze (HF) and damp heat (DH) have been developed for crystalline silicon PV modules [1]. T...

Solar energy based micro-inverters are becoming more popular. Each solar panel in a system has its own low power inverter, its possibility to shading and PV cell malfunction is less. The micro-inverter is the integration of inverter and PV module in one electrical device. Micro-inverters convert the DC power from one PV module (solar panel) to the AC grid, and are designed for an output power i...