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160157

A Microprocessor Based Load Voltage Regulator for Photovoltaic Systems.

Article

Last updated: 04 Jan 2025

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Subjects

-

Tags

Electronics and Communications Engineering

Abstract

A conventional photovoltaic (PV) system driving a DC load consists. of a PV array ,storage battery. a  battery voltage regulator (BVR) and a load The voltage of typical lead acid batteries. widely used in PV systems, varies between 93 5 % and 120% of its nominal voltage according to its state of charge (SOC)  such voltage variations are not accepted for critical loads such as some communication systems Conventional solution of this problem is to operate the PV system at higher voltage and to include a  control circuit that introduces passive elements so that the load is operating within the allowed limits. Such  a solution leads to power dissipation in the passive elements and this presents power toss. 
  
In this work an alternative solution based on a microprocessor that keeps the load voltage at the predetermined level is discussed. The system consists of an A/D converter, a microprocessor controller, a switching circuit and a filter. The microprocessor reads the battery voltage variations via the A/D converter corresponding duty cycle value is calculated and used to control the switching circuit to achieve the required regulation. A detailed simulation program is used to study the performance of the PV system installed in Cairo city. The proposed technique avoids the power loss and as a result the required PV  array size becomes smaller. Hence the system economics is improved.

DOI

10.21608/bfemu.2021.160157

Authors

First Name

Wagdy

Last Name

Anis

MiddleName

R.

Affiliation

Electronics and Communication Engineering Department, Faculty of Engineering, Ain Shams University, Cairo, Egypt.

Email

-

City

Cairo

Orcid

-

First Name

Abd El-Shakour

Last Name

El-Samahy

MiddleName

-

Affiliation

Professor of Systems and Computers Engineering Department, Faculty of Engineering, Al Azhar University, Cairo, Egypt.

Email

-

City

Cairo

Orcid

-

Volume

20

Article Issue

1

Related Issue

23470

Issue Date

1995-03-01

Receive Date

1995-01-11

Publish Date

2020-03-01

Page Start

32

Page End

44

Print ISSN

1110-0923

Online ISSN

2735-4202

Article File

BFEMU_Volume 20_Issue 1_Pages 32-44.pdf

PDF . 437.8kB

Link

https://bfemu.journals.ekb.eg/article_160157.html

Detail API

https://bfemu.journals.ekb.eg/service?article_code=160157

Order

5

Type

Research Studies

Type Code

1,205

Publication Type

Journal

Publication Title

MEJ. Mansoura Engineering Journal

Publication Link

https://bfemu.journals.ekb.eg/

MainTitle

A Microprocessor Based Load Voltage Regulator for Photovoltaic Systems.

Details

Type

Article

Created At

22 Jan 2023