0
Research Papers

Modeling and Optimizing the Size of the Power Conditioning Unit for Photovoltaic Systems

[+] Author and Article Information
Abou El-Maaty M. Abd El-Aal

 University of Kassel, Institute of Solar Energy Supply Technology, ISET e.V., Division Energy Conversion and Control Engineering, Königstor 59, D-34119 Kassel, Germanyabou@eri.sci.eg

Jürgen Schmid, Jochen Bard, Peter Caselitz

 University of Kassel, Institute of Solar Energy Supply Technology, ISET e.V., Division Energy Conversion and Control Engineering, Königstor 59, D-34119 Kassel, Germany

J. Sol. Energy Eng 128(1), 40-44 (Mar 09, 2005) (5 pages) doi:10.1115/1.2148978 History: Received October 07, 2004; Revised March 09, 2005

Photovoltaic (PV) systems, grid-connected or stand-alone, use the power conditioning unit (PCU) to optimize the energy transfer from the PV generator to the user load by using the maximum power point tracker, and also to invert, regulate, and wave shape the power between the components of the system. To study and optimize this system, different PCU models are applied. In this work different empirical models of the PCU have been set up. The purpose of this investigation is to verify the possibility of the PCU application to this system and study the different mathematical energy efficiency models. All these models have been simulated and compared with a typical real system to show which one is better. The second part of the paper includes the optimal size of the PCU with the PV system and also an application comparison between two possible locations for varied geographical latitudes, in Kassel/Germany (middle Europe) and Cairo/Egypt (North Africa).

FIGURES IN THIS ARTICLE
<>
Copyright © 2006 by American Society of Mechanical Engineers
Your Session has timed out. Please sign back in to continue.

References

Figures

Grahic Jump Location
Figure 1

The effect of parameter losses on the power inverter efficiency

Grahic Jump Location
Figure 2

A single phase PV system (30 PV modules BP 585 connected series and 2.5kW Sunny Boy Inverter)

Grahic Jump Location
Figure 3

Models and measurement efficiencies as a function of time during one day

Grahic Jump Location
Figure 4

A comparison between mean efficiency (one day) for different models of Sunny Boy inverter

Grahic Jump Location
Figure 5

Energy distribution of solar radiation power in different locations

Grahic Jump Location
Figure 6

The relative time distribution of solar radiation power in different locations

Grahic Jump Location
Figure 7

Yf∕Ya versus the ratio Prated,PCU∕PPV,out for a Sunny Boy inverter at Cairo and Kessel

Grahic Jump Location
Figure 8

Annual efficiencies and losses with different parameters and sites for quadratic (Q1) inverter model

Tables

Errata

Discussions

Some tools below are only available to our subscribers or users with an online account.

Related Content

Customize your page view by dragging and repositioning the boxes below.

Related Journal Articles
Related eBook Content
Topic Collections

Sorry! You do not have access to this content. For assistance or to subscribe, please contact us:

  • TELEPHONE: 1-800-843-2763 (Toll-free in the USA)
  • EMAIL: asmedigitalcollection@asme.org
Sign In