What is it about?
At first, this paper aims to study the effects of partial shading of photovoltaic (PV) panel without bypass diode, in order to present the hot-spot problem which can cause permanent damage to the panel, and with bypass diode that actually protects the panel against the hot-spot phenomenon. A PSIM model simulation that represents a PV panel under shading has been used to do this and the results are presented in this paper. And then, we benefit from the component provided by PSIM (C block) in order to code the maximum power point tracking algorithm (MPPT) using embedded C language so as to operate the PV panel at maximum power point (MPP). One of most precious advantages of this method is that once the MPPT is implemented using C block it can be applied in digital devices, because C language is portable and independent of the machine. The algorithm used is based in Perturb and observe method and it represents a good performance in terms of response time (0.005s) and efficiency (98.99%). However, we demonstrate that this method can fail to follow the real MPP since multiple maxima can exist on the PV power curve under partial shading (global MPP and local MPP). Finally, to solve this problem, the distributed maximum power point tracking (DMPPT) method is used.
Featured Image
Why is it important?
Nice work related the shading effect on PV systems.
Read the Original
This page is a summary of: Shading Effect to Energy Withdrawn from the Photovoltaic Panel and Implementation of DMPPT Using C Language, International Review of Automatic Control (IREACO), March 2016, Praise Worthy Prize,
DOI: 10.15866/ireaco.v9i2.8850.
You can read the full text:
Resources
PV panel under shading and implementation of DMPPT
This data presents a PSIM files simulation of the paper "Shading Effect to Energy Withdrawn from the Photovoltaic Panel and Implementation of DMPPT Using C Language".
Impact of Partial Shading and bypass diode on PV panel Output Power
Impact of Partial Shading and bypass diode on PV panel Output Power
Contributors
The following have contributed to this page