Investigation on the actual power output of building-integrated amorphous photovoltaic claddings

Pao Yue-kong Library Electronic Theses Database

Investigation on the actual power output of building-integrated amorphous photovoltaic claddings

 

Author: Liu, Hongyu
Title: Investigation on the actual power output of building-integrated amorphous photovoltaic claddings
Degree: M.Eng.
Year: 2013
Subject: Building-integrated photovoltaic systems.
Photovoltaic power systems -- Mathematical models.
Hong Kong Polytechnic University -- Dissertations
Department: Dept. of Building Services Engineering
Pages: xvi, 105 leaves : ill. (some col.) ; 30 cm.
Language: English
InnoPac Record: http://library.polyu.edu.hk/record=b2641109
URI: http://theses.lib.polyu.edu.hk/handle/200/7108
Abstract: This thesis aims to evaluate the influence of module temperature and solar irradiance on the power performance of amorphous silicon PV module, and to develop and verify the power generation mathematical model applied for amorphous silicon PV module. Together with the utilization of mathematical model, experimental analysis and site measurement respectively, the most important electrical parameters, including short-circuit current, open-circuit voltage, maximum power output, fill factor and system efficiency of PV module, were investigated and analyzed under various solar irradiance levels and module temperatures. In addition, the numerical model of power generation applied to amorphous silicon PV module was developed and verified using experimental analysis and site measurement. The findings demonstrated that I-V characteristics, including short-circuit current, open-circuit voltage, maximum power output, fill factor and system efficiency, were affected by the change of solar irradiance and module temperature. The short circuit current appears an upward trend with the increasing of module temperature, and gives an upward trend with the increasing of solar irradiance. The open circuit voltage shows a downward trend with the increasing of module temperature, but an upward trend with the increasing of solar irradiance. The maximum power output is observed to give a downward trend with the increasing of module temperature, but an upward trend with the increasing of solar irradiance. The system efficiency of amorphous silicon PV module shows a downward trend with the increasing of module temperature, while an upward trend with the increasing of solar irradiance. The fill factor of amorphous silicon PV module provides an upward trend with the increasing of module temperature, but an upward trend with the increasing of solar irradiance.
In addition, the mathematical model of power generation applied to amorphous silicon PV module was verified. Laboratory tests and site measurement have been carried out on amorphous silicon BIPV modules. The findings indicate that the accuracy of mathematical model was high when the amorphous silicon PV module was exposed the solar irradiance of higher than 300 W/m², which means the discrepancies between experimental results and mathematical model were 4.86%. While the average discrepancy was 5.3% on the condition that amorphous silicon PV module was exposed under the solar irradiance ranging from 240 W/m²- 1100 W/m², which means that the mathematical model cannot be applied to the amorphous silicon PV module. In addition, the findings indicate that discrepancy of power output applied for amorphous silicon Photovoltaic module shifted towards lower value with the increasing of solar irradiance ranging from 0-1200 W/m2 and module temperature ranging from 0-70 °C.

Files in this item

Files Size Format
b2641109x.pdf 4.808Mb PDF
Copyright Undertaking
As a bona fide Library user, I declare that:
  1. I will abide by the rules and legal ordinances governing copyright regarding the use of the Database.
  2. I will use the Database for the purpose of my research or private study only and not for circulation or further reproduction or any other purpose.
  3. I agree to indemnify and hold the University harmless from and against any loss, damage, cost, liability or expenses arising from copyright infringement or unauthorized usage.
By downloading any item(s) listed above, you acknowledge that you have read and understood the copyright undertaking as stated above, and agree to be bound by all of its terms.

     

Quick Search

Browse

More Information