Abstract
This chapter proposes a demand-side management (DSM) scheme for the autonomous microgrid for the residential building. The direct current (DC) distribution system is considered a prospective system due to the increase of DC loads and DC power sources, such as photovoltaic (PV) and battery bank (BB). The BB responds to the changes in a power imbalance between PV generation and demand within the autonomous microgrid. The power loss in the battery during charging/discharging is a great challenge for the PV system autonomous microgrids. It decreases the system efficiency. The control objective of the proposed DSM scheme is to use the PV energy more efficiently and minimize the use of battery energy (charging and discharging cycles). The proposed control algorithm shifts the deferrable load from nonsunny to sunny hours to decrease the building demand during nonsunny hours. The result shows that the proposed DSM scheme significantly increases the direct use of PV energy and decreases the use of battery energy. The proposed scheme decreased the power loss in the battery and improved system efficiency. The size of the PV plant, energy storage, and capital cost of the system with DSM scheme have been reduced.
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