Dc Microgrid Stabilization Through Fuzzy Control of Interleaved, Heterogeneous Storage Elements

Smith, Robert

doi:10.37099/mtu.dc.etds/873

Cited by 1 publication

(1 citation statement)

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“…This is because more people are migrating to the major cities in search of a better life which must also be provided with electricity daily. The grid network is no longer sustainable nor environmentally friendly due to obsolete equipment, poor technology, and the need to operate more efficient and costeffective grid network [5][6][7]. Hence, efficient renewable energy powered grid networks have started attracting more attention because of the obvious advantages it has over the conventional grid network systems [8], [9].…”

Section: Introductionmentioning

confidence: 99%

Hybrid Solar PV–Hydro Controller for an Autonomous DC Microgrid

Nkundukize,

Adonis

2023

Preprint

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A control method for an off-grid hybrid DC microgrid that consists of solar PV and pumped hydro storage was developed to provide sustainable, reliable, flexible and accessible energy. The developed off-grid DC microgrid system (DCMGS) consists of a solar PV system of 100 kWp as a distributed energy resource and a pumped hydro storage system as energy storage system (ESS). An energy management system (EMS) was developed using a fuzzy logic controller (FLC) in the MATLAB/Simulink environment. The pumped hydro storage system (PHSS) is used as an ESS to improve the DCMGS stability and also operates as a backup power system. A load shedding scheme is part of the system to bring support to the supply by automatically disconnecting or re-connecting the secondary load to ensure reliability and continuous supply of power to the primary load and secondary load based on the available power and the water level in the reservoir. A DC-DC boost converter connects the solar PV to the rest of the DCMGS thereby improving the quality of power generated and allow the flow of power in the system. The performance analysis of the research design considered the intermittent power supply of the solar PV and the flexibility of the load demand under different circumstances and time of the day. The results showed that the adopted EMS ensured DC microgrid stability, improved reliability, increased system flexibility and effective power distribution. Again, the developed algorithm provided adequate power distribution between the solar PV and the PHSS and maintained the charging and discharging of the reservoir within acceptable level. The PHSS was able to augment power shortage in the system based on the different scenarios that were implemented. The developed EMS also provides an opportunity to remodel and change any parameter within the DCMGS.

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Section: Introductionmentioning

confidence: 99%