Browsing by Author "Mumbere, Samuel Kihembo"

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    An Energy Management System for Disaster Resilience in Islanded Microgrid Networks
    (IEEE., 2021) Mumbere, Samuel Kihembo; Matsumoto, Soichiro; Fukuhara, Atsushi; Bedawy, Ahmed
    As disasters continue to become common around the world, the reliability of power systems is increasingly becoming critical. Researchers continue to explore the inclusion of distributed energy resources (DERs), specifically smart microgrids, into traditional power system designs to improve their reliability. Smart microgrids possess characteristic advantages of energy storage, off-grid operation, and control flexibility. In this regard, we explore load shedding of noncritical loads as a solution to extend the uptime of a group of interconnected microgrids that have been islanded after a disaster. Load shedding and Photovoltaic (PV) Curtailment are implemented as an addition to our previously proposed energy management systems (EMS) for each prosumer (PR) in the network. The proposed method shows that the proposed control methods can prolong uptime in the interconnected off-grid network of microgrids
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    A Novel Energy Management Technique for Shared Solar and Storage Resources in Remote Communities
    (IEEE, 2020) Mumbere, Samuel Kihembo; Tanioka, Yoshiki; Matsumoto, Soichiro; Fukuhara, Atsushi; Sasaki, Yutaka
    World over, the cost of PV equipment continues to decrease. Coupled with their quick time to install and the advancement of renewables in the face of climate change; they are fast becoming an appealing solution for remote communities that still have no access to national grids. In this paper, we study management of the state of charge (SOC) of batteries in an off-grid situation where multiple prosumer installations in different areas are interconnected to a shared distribution line. Each distinct installation consists of Photovoltaic power generation (PV), Storage batteries (BT), converters, their connection line DC power bus, and AC loads connected via an inverter, all modeled MATLAB / Simulink Simscape Power Systems. We develop a tool for improving BT utilization, monitoring, and managing energy consumption while maintaining the voltage at acceptable levels. Considering Uganda as an example, our research suggests a solution for electrifying remote communities by installing shared solar and storage units.