Next Article in Journal
Chronic Inflammation in the Epidermis: A Mathematical Model
Next Article in Special Issue
Control and Modulation Techniques for a Centralized PV Generation System Grid Connected via an Interleaved Inverter
Previous Article in Journal
Local Oxidation Nanolithography on Metallic Transition Metal Dichalcogenides Surfaces
Previous Article in Special Issue
Review of the Remaining Useful Life Prognostics of Vehicle Lithium-Ion Batteries Using Data-Driven Methodologies
Article Menu

Export Article

Open AccessArticle
Appl. Sci. 2016, 6(9), 251; doi:10.3390/app6090251

A Novel Concentrator Photovoltaic (CPV) System with the Improvement of Irradiance Uniformity and the Capturing of Diffuse Solar Radiation

Department of Information and Communication Engineering, Myongji University, Yongin 17058, Korea
*
Author to whom correspondence should be addressed.
Academic Editors: Frede Blaabjerg and Yongheng Yang
Received: 16 June 2016 / Revised: 24 August 2016 / Accepted: 6 September 2016 / Published: 8 September 2016
(This article belongs to the Special Issue Advancing Grid-Connected Renewable Generation Systems)
View Full-Text   |   Download PDF [6656 KB, uploaded 8 September 2016]   |  

Abstract

This paper proposes a novel concentrator photovoltaic (CPV) system with improved irradiation uniformity and system efficiency. CPV technology is very promising its for highly efficient solar energy conversion. A conventional CPV system usually uses only one optical component, such as a refractive Fresnel lens or a reflective parabolic dish, to collect and concentrate solar radiation on the solar cell surface. Such a system creates strongly non-uniform irradiation distribution on the solar cell, which tends to cause hot spots, current mismatch, and degrades the overall efficiency of the system. Additionally, a high-concentration CPV system is unable to collect diffuse solar radiation. In this paper, we propose a novel CPV system with improved irradiation uniformity and collection of diffuse solar radiation. The proposed system uses a Fresnel lens as a primary optical element (POE) to concentrate and focus the sunlight and a plano-concave lens as a secondary optical element (SOE) to uniformly distribute the sunlight over the surface of multi-junction (MJ) solar cells. By using the SOE, the irradiance uniformity is significantly improved in the system. Additionally, the proposed system also captures diffuse solar radiation by using an additional low-cost solar cell surrounding MJ cells. In our system, incident direct solar radiation is captured by MJ solar cells, whereas incident diffuse solar radiation is captured by the low-cost solar cell. Simulation models were developed using a commercial optical simulation tool (LightTools™). The irradiance uniformity and efficiency of the proposed CPV system were analyzed, evaluated, and compared with those of conventional CPV systems. The analyzed and simulated results show that the CPV system significantly improves the irradiance uniformity as well as the system efficiency compared to the conventional CPV systems. Numerically, for our simulation models, the designed CPV with the SOE and low-cost cell provided an optical power ratio increase of about 17.12% compared to the conventional CPV without the low-cost cell, and about 10.26% compared to the conventional CPV without using both the SOE and additional low-cost cell. View Full-Text
Keywords: concentrator photovoltaic (CPV); Fresnel-lens-based CPV; CPV with irradiance uniformity; CPV for capturing diffuse radiation concentrator photovoltaic (CPV); Fresnel-lens-based CPV; CPV with irradiance uniformity; CPV for capturing diffuse radiation
Figures

Figure 1

This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

Scifeed alert for new publications

Never miss any articles matching your research from any publisher
  • Get alerts for new papers matching your research
  • Find out the new papers from selected authors
  • Updated daily for 49'000+ journals and 6000+ publishers
  • Define your Scifeed now

SciFeed Share & Cite This Article

MDPI and ACS Style

Tien, N.X.; Shin, S. A Novel Concentrator Photovoltaic (CPV) System with the Improvement of Irradiance Uniformity and the Capturing of Diffuse Solar Radiation. Appl. Sci. 2016, 6, 251.

Show more citation formats Show less citations formats

Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Related Articles

Article Metrics

Article Access Statistics

1

Comments

[Return to top]
Appl. Sci. EISSN 2076-3417 Published by MDPI AG, Basel, Switzerland RSS E-Mail Table of Contents Alert
Back to Top