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"البطاريات"
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البطارية : كيف أشعلت الطاقة المحمولة ثورة تكنولوجية
هذا الكتاب يغزل وينسج القصص والروايات حول منتج أصبح رمزا على عصر كامل. فمنذ اكتشاف الكهرباء ثم استخدامها فى حياتنا اليومية ومصانعنا ومزارعنا، والبطارية تحتل الصدارة فى هذا المشهد الحضارى. يبدأ المؤلف بالمكثفات(أوعية ليدن) وينتهى بالمكثفات الفائقة الحديثة، مرورا بكل تاريخ البطاريات وأعلام مبتكريها من علماء ومهندسين مشهورين أو غير مشهورين. ويعرض الكتاب لدور البطارية فى الاتصالات - التلغراف والتليفون - وللمخترعين الذين ينسب إليهم الفضل فى ذلك، سواء عن حق أو باطل. نرى فى الكتاب أن شفرة التلغراف التى تنسب لمورس، لم يخترعها مورس، وإنما أحد مساعديه. كذلك المصباح الكهربى والذى لا يختلف اثنان على مخترعه - إديسون - والإرسال اللاسلكى (الراديو) الذى ينسب الفضل فيه لماركونى، فى الحقيقة لم يكن الأمر كذلك، فقد كان هناك مجهولون لم يسعفهم الحظ ليسجلوا براءات اخترعاتهم قبل هؤلاء المشهورين. والكتاب فريد فى محتواه رائع فى سرده وتحليلاته لحقائق الاختراعات.
BOOK
Solar Charger Sizing
As a part of the optimization of photovoltaic energy extraction, an optimization of each individual component is required. This paper focuses on the optimization of solar battery charger block and presents a new method to track the maximum power point and the load regulation. For this purpose, we proposed a specific architecture and design of a high-reliable, robust, stable, miniaturized system. We sized a photovoltaic charger to regulate the battery charger that employs an intelligent algorithm including the criteria of reliability.
Journal Article
Load Frequency Control of Two-Area Network using Renewable Energy Resources and Battery Energy Storage System
In an interconnected system, the frequency and tie-line power interchange are very susceptible with the diversification of power load demand. Literally, in a multi-area power system, the load frequency control (LFC) is substantially aimed to minimise the deviations of these parameters relatively. Knowingly, the power production from renewable energy resources could offer promising solutions despite their intermittency (i.e. photovoltaic/wind generation), hence in this context, a battery energy storage system (BESS) is proposed to delineate dynamic response along with grid-connection. This study has proposed LFC with BESS control method to suppress frequency deviations for a power system and being compared with photovoltaic (PV) approach. The effectiveness was verified using newly developed AGC30 model of Japanese Power System and was modelled using MATLAB Simulink. Furthermore, an analysis of the tie-line power oscillations also are carried out and comparison analysis demonstrates further the reliability of the proposed model and control methods.
Journal Article
Mathematical modeling of thermo-regulation of fuel in diesel engines YaMZ-238
The Maintaining the temperature system for fuel diesel engine by mathematical modeling. Thermal control of fuel with objective of this research, Peltier thermal application and paraffin-based thermal batteries. A fuel system thermometer is assembled in the diesel engine and thermal controller. A thermal model for thermal control of fuel has been developed in the diesel engine. Mathematical model is a system of differential equations. The use of controller for thermal control system of fuel and engine oil depending on the software obtained by approximating the graphical solution of the system allow to maintain the temperature with a error of ± 3 ° C for fuel and engine oil, which corresponds to the values obtained experimentally . The upgraded thermal control system can be used for existing and newly designed diesel engines. The production tests for diesel engine YaMZ238 (BF and Deutz BF 6M 2012 C analogue with water cooling) revealed an improvement in eco-ecological characteristics of diesel engine operation: a 20% reduction in fuel consumption during start-up and operation of deceleration from 7 to 15%, exhausted gas toxicity from 10 to 17%. The developed mathematical model could be use to analyze the temperature systems of dual-fuel diesel engines on diesel and gas
Journal Article
An improved simple Fuel Cell model for Energy Management in residential buildings
This paper deals with a fuel cell (FC) model to be integrated into the energy management algorithm for a stand-alone residential photovoltaic (PV) power system. The FC system is added to guarantee continuous power supply taking account of the photovoltaic intermittent nature. FC models are generally relatively complex especially when they should be introduced in a complete hybrid system model. This paper investigates a simple FC model derived from the FC electrical circuit model. Analytic expression of each element of this simple circuit is established. Experimental tests are conducted to identify the model parameters. FC model is simulated using PSIM software and validated with corresponding experimental polarization curves. To verify FC model effectiveness for energy management algorithm, simulations are carried out with specific load shape and a hybrid system (FC and PV systems with storage batteries). Several scenarios are performed under various meteorological conditions and in case of non-availability generation.
Journal Article
Active and reactive power neurocontroller for grid-connected photovoltaic generation system
Many researchers have contributed to the development of a firm foundation for analysis and design of control applications in grid-connected renewable energy sources. This paper presents an intelligent control algorithm fond on artificial neural networks for active and reactive power controller in grid-connected photovoltaic generation system. The system is devices into two parts in which each part contains an inverter with control algorithm. A DC/DC converter in output voltage established by control magnitude besides maximum power point tracker algorithm always finds optimal power of the PV array in use. A DC/AC hysteresis inverter designed can synchronize a sinusoidal current output with the grid voltage and accurate an independent active and reactive power control. Simulation results confirm the validation of the purpose. Neurocontroller based active and reactive power presents an efficiency control that guarantees good response to the steps changing in active and reactive power with an acceptable current/voltage synchronism. In this paper the power circuit and the control system of the presented grid-connected photovoltaic generation system is simulated and tested by MatLab/Simulink.
Journal Article
Comparative Performance of Supercapacitor and Fuel cell based UPQC
In this paper analysis comparative result of a supercapacitor based unified power quality conditioner comparing with a fuel cell based unified power quality conditioner. This work describes the unified power quality conditioner principles and power restoration for balanced or unbalanced voltage sag or swells in a distribution system. This method proposes a typical configuration of unified power quality conditioner that consists of a DC/DC converter supplied by a supercapacitor at the DC link. This analysis used for comparing how the THD will be improved and after injecting current and voltage to UPQC source current and source voltage are sinusoidal. This paper explains the comparative results of UPQC showing performance wise THD of supercapacitor and fuel cell, the harmonic distortion is reduced in fuel cell as compared to supercapacitor. The comparative studies analyse in both the cases fuel cell is better than supercapacitor in power quality parameters as THD and power factor etc. The result analysis shows the THD of supercapacitor and fuel cell, the harmonic distortion is quite reduced in fuel cell as compared to supercapacitor. The operation of the proposed system is modeled and simulated in MATLAB environment using Simulink and Simpower System toolboxes.
Journal Article