Design of a Hybrid Energy System with Energy Storage for Standalone DC Microgrid Application

Mwaka I. Juma, Bakari M. M. Mwinyiwiwa, Consalva J. Msigwa and Aviti Mushi ()
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Mwaka I. Juma: Electrical Engineering Department, University of Dar es Salaam, Dar es Salaam P.O. Box 35131, Tanzania
Bakari M. M. Mwinyiwiwa: Electrical Engineering Department, University of Dar es Salaam, Dar es Salaam P.O. Box 35131, Tanzania
Consalva J. Msigwa: Electrical Engineering Department, Dar es Salaam Insititute of Technology, Dar es Salaam P.O. Box 2958, Tanzania

Energies, 2021, vol. 14, issue 18, 1-15

Abstract: This paper presents microgrid-distributed energy resources (DERs) for a rural standalone system. It is made up of a solar photovoltaic (solar PV) system, battery energy storage system (BESS), and a wind turbine coupled to a permanent magnet synchronous generator (WT-PMSG). The DERs are controlled by maximum power point tracking (MPPT)-based proportional integral (PI) controllers for both maximum power tracking and error feedback compensation. The MPPT uses the perturb and observe (P&O) algorithm for tracking the maximum power point of the DERs. The PI gains are tuned using the Ziegler–Nichols method. The developed system was built and simulated in MATLAB/Simulink under two conditions—constant load, and step-load changes. The controllers enabled the BESS to charge even during conditions of varying load and other environmental factors such as change of irradiance and wind speed. The reference was tracked extremely well by the output voltage of the DC microgrid. This is useful research for electrifying the rural islanded areas which are too far from the grid.

Keywords: solar photovoltaic (PV); wind turbine coupled to permanent magnet synchronous generator (WT-PMSG); battery energy storage system (BESS); maximum power point tracking (MPPT); DC/DC converters (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2021
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (2)

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