Engineering and Technology Journal

A Modified Global Management Controller for a Grid-connected PV System with Battery under Various Power Balance Modes

Document Type : Research Paper

Authors

1 Electrical department, University of Technology, Iraq

2 University of Kerbala Electrical and Electronic Engineering Dept

3 Department of Electrical Engineering, University of technology, Baghdad, Iraq,

Abstract

This work presents an Energy Management System (EMS) constructed on dissimilar power balance modes and dynamic grid power to activate a DC-link microgrid with a solar (PV-array) generator and battery storage. In addition, the option of requesting adjustable power from the grid to encounter load demand is also presented.  Based on the availability of solar sources, battery state, and grid power, energy management offers the appropriate references for all modes. Six power balance options are defined based on power supply, storage system, and grid mobility to match the load requirement. The aims are to reduce energy usage and upsurge the life of the storage device. The microgrid is controlled to maintain a consistent DC-link voltage and manage the battery current depending on the mode of operation. Using MATLAB\SIMULINK software, the anticipated energy management system, which is based on power balancing modes, is tested under various scenarios. The simulation results demonstrated that the microgrid operated admirably, with seamless switching between power balance modes.

Graphical Abstract

Highlights

  • A microgrid control system that depends on two stages was proposed.
  • The battery current and DC-link voltage control systems perform admirably, particularly during mode transitions.
  • Positive results with seamless transitions between modes were obtained from simulations conducted for various solar panels, battery status, and grid power.

Keywords

Main Subjects

References
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Engineering and Technology Journal
Volume 41, Issue 2
Electrical Engineering
18 articles
February 2023
Page 294-308
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