Abstract
DC microgrid has been gaining popularity as solution as a more efficient and simpler power system especially for remote areas, where the main grid has yet to be built. This paper proposes a DC microgrid system based on renewable energy sources that employs decentralized control and without communication between one grid point and another. It can be deployed as an individual isolated unit or to form an expandable DC microgrid through DC bus for better reliability and efficiency. The key element of the proposed system is the power conditioner system (PCS) that works as an interface between energy sources, storage system, and load. PCS consists of modular power electronics devices and a power management unit, which controls power delivery to the AC load and the grid as well as the storage system charging and discharging sequence. Prototypes with 3 kWp solar PV and 13.8 kWh energy storage were developed and adopt a pole-mounted structure for ease of transportation and installation that are important in remote areas. This paper presents measurement results under several conditions of the developed prototypes. The evaluation shows promising results and a solid basis for electrification in remote areas.
Highlights
As an archipelago with more than 17,000 islands, Indonesia faces a challenge in delivering electricity to all its citizens, to those who live in the remote areas and outer islands
In multi-point mode, the proposed DC microgrid system works similar to a single the point, but multi-point mode, the proposed works similar to a single point, charge states with its own management way it does incontrols a single-point system power sharing capability is through theunit
This paper proposes a new DC microgrid system concept that is suitable for accelerating electricity delivery to rural and remote areas that has no access to the main utility grid
Summary
As an archipelago with more than 17,000 islands, Indonesia faces a challenge in delivering electricity to all its citizens, to those who live in the remote areas and outer islands. [28] proposes using of peer-to-pe control between microgrids, while [29] opts using switching frequency modulation-base communication, which is a good choice for systems in urban area where communicatio link can be established fairly but to not as feasible in the country charge (SoC). These methods are easier implement, especially because inand ruralremote areas, island. Power Conditioner this paper.PCS is the primary element in the DC microgrid system proposed in this paper It interfaces an energy source such as solar PV, wind, and hydro, an ESS, AC loads, and the DC grid.
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