This paper describes a DC isolated network which is fed with Distributed Generation (DG) from photovoltaic (PV) renewable sources for supplying unbalanced AC loads. The battery energy storage bank has been connected to the DC network via DC/DC converter to control the voltage of the network and optimize the operation of the PV generation units. The PV arrays are connected to the DC network ...

To help users select and understand people during searches for them, we present a method of assigning Nippon Decimal Classification (NDC), which is a system of library classification numbers, to people on the web. By assigning NDC numbers to people, we can assign not only labels to people but also build a NDC-based people-search directory. We use a relative index in NDC, which lists the related...

A dynamic phasor model for lowand medium-voltage distribution grids is presented. This model accurately represents the transient dynamics of this type of grid, and its low order makes it well suited for control design. A novel fixed-structure, robust control design method based on convex optimization is then used to design a decentralized low-order controller that shows a significantly improved...

An improved control strategy for grid-connected inverters within microgrids is presented in this paper. The strategy is based on the classical P-ω and Q-V droop method. The improvement in the proposed control strategy is twofold: Firstly, the transient response of the droop controller is improved by replacing the traditional method of measuring average power, which is based on using a first ord...

Most of the active current sharing methods are based on a communication network. The link is also used with improved droop control to achieve precise load and regulate voltage at common DC bus. Conversely, conventional method that considered decentralized becomes more attractive for controlling parallel-connected converters in microgrids. methods' main drawbacks associated unequal deviation In ...

The frequency stability of the power system is challenged by high penetration electronic interfaced renewable energy sources (RES). This paper investigates improvements response fully decoupled wind generators (FDWG) proposing a novel generic model implementation ultracapacitors (UC) within hybrid scheme in real-time simulations plants. UCs are selected as ideal fast active power-frequency cont...

This paper presents an accurate control scheme for active and reactive power sharing in a microgrid consisting of two distributed generation (DG) units. Each DG unit within the microgrid utilizes a structurally simple controller for adjusting its power components. The proposed method combines the droop, and average power sharing (APS) schemes to improve the accuracy of reactive power sharing co...