Advanced search
Start date
Betweenand
(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

Photovoltaic Sub-Module With Optical Sensor for Angular Measurements of Incident Light

Full text
Author(s):
de Campos da Costa, Joffo Paulo [1] ; Gounella, Rodrigo Henrique [1] ; Bastos, Wagner Benicio [2] ; Longo, Elson [2] ; Carmo, Joao Paulo [1]
Total Authors: 5
Affiliation:
[1] Univ Sao Paulo, Dept Elect Engn, Grp Metamat Microwaves & Opt, BR-13566590 Sao Carlos, SP - Brazil
[2] Univ Fed Sao Carlos, Dept Chem, LIEC Lab, BR-13565905 Sao Carlos, SP - Brazil
Total Affiliations: 2
Document type: Journal article
Source: IEEE SENSORS JOURNAL; v. 19, n. 8, p. 3111-3120, APR 15 2019.
Web of Science Citations: 0
Abstract

This paper presents a photovoltaic (PV) sub-module with an optical sensor for angular measurements of incident light. The optical sensor is a CMOS microdevice for accurate tracking of the solar incident angle for application on PV systems. This microdevice was designed in 0.7-mu m CMOS and is composed by a matrix of photodiodes and the respective read-out circuits. A set of microstructures on metal with the widths of 5 and 10 mu m was fabricated on the top of the photodiodes to allow the measuring of angles on a wide range of illuminations and for calibration purposes. The measurements clone in the laboratory and in real-field open environments confirmed the suitability to track with good precision the maximum sun's incident angle in the range {[}0 degrees, 180 degrees], only limited by the servomotor to rotate the system. This PV sub-module measures 12 cm x 10 cm x 4 cm and presents a total power consumption of 265 mW, when supplied by 5 V. These features combined with the low cost of this PV sub-module bring excellent prospects for its installation on PV cells to achieve a maximum efficiency in the solar to electric energy conversion. To finish, this PV sub-module costs less than \$130, opening good perspectives for its popularization. (AU)

FAPESP's process: 13/07296-2 - CDMF - Center for the Development of Functional Materials
Grantee:Elson Longo da Silva
Support type: Research Grants - Research, Innovation and Dissemination Centers - RIDC