Preprint Article Version 1 Preserved in Portico This version is not peer-reviewed

Proposal Design of a Hybrid Solar PV-Wind-Battery Energy Storage for Standalone DC Microgrid Application

Version 1 : Received: 11 August 2021 / Approved: 11 August 2021 / Online: 11 August 2021 (15:10:26 CEST)

How to cite: Juma, M.; Mwinyiwiwa, B.M.M.; Msigwa, C.J.; Mushi, A.T. Proposal Design of a Hybrid Solar PV-Wind-Battery Energy Storage for Standalone DC Microgrid Application. Preprints 2021, 2021080264 (doi: 10.20944/preprints202108.0264.v1). Juma, M.; Mwinyiwiwa, B.M.M.; Msigwa, C.J.; Mushi, A.T. Proposal Design of a Hybrid Solar PV-Wind-Battery Energy Storage for Standalone DC Microgrid Application. Preprints 2021, 2021080264 (doi: 10.20944/preprints202108.0264.v1).

Abstract

This paper presents a microgrid distributed energy resources (DERs) for a rural standalone system. It is made up of solar photovoltaic (solar PV) system, battery energy storage system (BESS), and wind turbine coupled to permanent magnet synchronous generator (WT-PMSG). The DERs are controlled by maximum power point tracking (MPPT) based proportional intergral (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-Nichol’s 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 very well by the output voltage of the DC grid. This is a useful research for electrifying the rural islanded areas, too far from the grid.

Keywords

solar photovoltaic (PV); wind turbine coupled to permanent synchronous generator (WT-PMSG); battery energy storage (BESS); maximum power point tracking (MPPT); DC/DC converters

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