Fuzzy logic control of hybrid systems including renewable energy in microgrids

Abstract

With a growing demand for more energy from subscribers, a traditional electric grid is unable to meet new challenges, in the remote areas remains the extension of the conventional electric network very hard to do make prohibitively expensive. Therefore, a new advanced generation of traditional electrical is inevitable and indispensable to move toward an efficient, economical, green, clean and self-correcting power system. The most well-known term used to define this next generation power system is Micro Grid (MG) based on renewable energy sources (RES). Since, the energy produced by RES are not constant at all times, a wide range of energy control techniques must be involved to provide a reliable power to consumers. To solve this problem in this paper we present a Fuzzy Logic Control of isolated Hybrid Systems (HRES) Including Renewable Energy in Micro-Grids to maintain a stability in voltage and frequency output especially in the standalone application. The considered HRES combine a wind turbine (WT) and photovoltaic (PV) panels as primary energy sources and an energy storage system (ESS) based on battery as a backup solution. Simulation results obtained from MATLAB/Simulink environment demonstrate the effectiveness of the proposed algorithm in decreasing the electricity bill of customer.

An effective method for clustering-based web service recommendation

“…On the off chance that the size regarding U is more remarkable than (or grows to) b, State (1) implies appropriation to figure a suitable width w for apportioning U. In the event when the estimation of w is equal to zero, U is assigned as non-disseminated (Stages [15][16][17][18][19][20]. This occurs when the items in U have similarities regarding the separation work, and in this manner, they can't be apportioned.…”

“…Lausen and Haselwanter [11] executed the calculation about how to solidify undeniable quality of service (QoS) estimations to get a sense as a rule rating for a web service. The proposed reputation can be portrayed as the standard given to the organization by the end client [18]- [20].…”

Decentralized secondary control for frequency regulation based on fuzzy logic control in islanded microgrid

“…Distributed generators (DGs) based on renewable energy sources have emerged considerably in the last decade [1], to integrate and exploit them in a good manner, a new paradigm called microgrid (MG) has appeared as an optimal solution to deal with this challenge [2], and it gained significant attention from researchers [3]. A MG is an interconnection of DG units such as PV systems, wind turbines, battery energy storage units, and loads in low/medium voltage distribution [4], [5], MG can work autonomously in islanding mode or tied to the utility grid in grid-connected mode as can be seen in Figure 1 [6], [7], and it compromises different technologies to achieve their main purpose as reliable power supply system such as power electronics, communication infrastructures, and control systems [8]. MG has the advantages of local production and local consumption which means less transmission lines and hence less losses, further, it is 87 however it suffers from steady state-error and slow dynamic response which need to be improved in future works.…”

Fuzzy Logic Energy Management between Stand-alone PV Systems

“…The FLC resolves the cooking time of the microwave oven automatically based on the food type and quantity [6]. It is also used for hybrid systems including renewable energies with and without storage systems [7][8]. Indeed, a FLC strategy is presented and implemented in a standalone hybrid PV system , in order to decrease the battery operational life and assure the power continuity [9][10].…”