The nonavailability of fossil fuels and the shortcomings nonconventional energy sources taking place in environment lead research development towards alternative clean such as renewable sources. Renewable or resources are being used to meet ever-increasing demand. photo voltaic (PV) is right choice for small voltage DC distribution systems, due their advantages. But this source can produce low ...

This article proposes a novel solution to the issue of protection instability caused by time synchronization error in high-speed differential schemes for dc microgrids. DC microgrids provide more efficient platform integrate fast-growing renewable energy sources, storage systems, and electronic loads. However, integration distributed generators (DGs) may result variable fault current magnitude ...

In this paper, we propose a new voltage stabilizing controller for DC microgrid. The microgrid under consideration is composed of Distributed Generation Units (DGUs), power lines, and local loads. parameters DGUs lines are assumed to be unknown but belong known bounded sets the loads, which modeled by constant current unknown. proposed adopts disturbance observer based robust against parameter ...

One of the most critical operations aspects is power management strategies for hybrid AC/DC microgrids. This work presented in AC–DC microgrids with a droop control strategy. At first, photovoltaic, Wind, and battery are used as sources, which supply uncertainties. The AC DC controlled by an Adaptive neuro-fuzzy inference system (ANFIS) controller Proportional Integral Derivative (PID) controll...

As the power interface between energy storage devices (ESD) and dc link of DC Micro-grids, dc-dc converters, which have been regarded as heart many critical applications such electrical vehicles, data center, aerospace systems, gained more attentions recently. The fault diagnosis tolerant control in converters become essential to ensure a reliable robust system especially for applicants, where ...

In DC and hybrid microgrids (MG), the DC-bus regulation using Energy Storage Devices (ESD) is important for the stable operation of both the generators and loads. There are multiple commercial voltage levels for both ESD and DC-bus; therefore, the ESD voltage may be higher, equal or lower than the DC-bus voltage depending on the application. Moreover, most of the ESD converter controllers are l...

Most of the distributed energy resources, loads and energy storage systems in a DC microgrid are equipped with power electronic converters. With the integration of advanced power electronics devices, a microgrid is able to utilize a broader range of technologies in its design and operation. A key feature of power electronic converter based systems is the ability to direct energy flow within a s...

Voltage stability is a critical feature of an efficiently operating power distribution system such as a DC islanded microgrid. Large-scale autonomous power systems can be defined by heterogeneous elements, uncertainty and changing conditions. This paper proposes a novel scalable decentralised control scheme at the primary level of the typical hierarchical control architecture of DC islanded mic...

With distributed generation and battery storage technologies thriving in microgrids, the use of direct current (DC) microgrids building sector offers multiple advantages energy efficiency power quality compared with alternating (AC) systems. This study developed a new concept loose-coupled bipolar DC system. The was used to design real-world office Shenzhen, China. A system model stability cont...