Performance of PV panel under shaded condition

Sep 14, 2021

Journal NTU JOURNAL FOR RENEWABLE ENERGY

DOI https://doi.org/10.56286/ntujre.v1i1.25

Issue 1

Volume 1

One of the most important technical aspects to consider during the technical study and practical installation of the solar panels is choosing the location of the solar panels, Because it's probable that some of its cells will be shaded. PV characteristics become more complex under partial shade situations, with several peaks.Partial shading affects the performance of the solar cell in proportion to the state of shadow; this negative performance will be reflected on the current generated by the solar cell; of the current value of the other cells (being connected in series) which will decrease the overall performance of the solar panel. The goal of this study is to demonstrate the impacts of partial shade on a PV array by analyzing various shading situations.First, this is doneusing Matlab/Simulink.

Predictive Current Control of Voltage Source Inverters Using a Discrete-Time Model

Jun 15, 2023

Journal Journal Européen des Systèmes Automatisés

DOI https://doi.org/10.18280/jesa.560306

Issue 3

Volume 56

In this investigation, the most popular multilevel inverter topologies and control approaches have been analyzed. The various benefits, such as low power dissipation on power switches, low harmonic contents, and low Electromagnetic Interference (EMI) outputs, Multilevel Inverter Topologies (MLIs) are finding more and more usage in medium and high-power applications. An optimization tool for the layout of a three-phase Voltage Source Inverter (VSI) using a diode-based rectifier has been created. For general-purpose industrial motor drives that use three-phase Alternating Current (AC), the Pulse Width Modulation (PWM) voltage source inverter with diode front-end rectifier has emerged as the converter of choice. This study discusses the implementation of predictive current control in a voltage source inverter. This technique makes use of a discrete-time model of the system to foresee the load current for every conceivable inverter-generated voltage vector. The voltage vector is chosen that minimizes a quality function. In this study, we use a quality function that measures the current error at the next sample interval. It is compared to hysteresis control and pulse width modulation control to see how well the suggested predictive control approach performs. The results demonstrate that the predictive strategy manages load current extremely well and outperforms traditional methods.