نتایج جستجو برای: power system simulation

تعداد نتایج: 2934962  

Journal: :international journal of electrical and electronics engineering 0
a. naderii h. ghasemzadehii a. pourazar m. aliasgharyii

in this paper, a new structure possessing the advantages of low-power consumption, less hardware and high-speed is proposed for fuzzy controller. the maximum output delay for general fuzzy logic controllers (flc) is about 86 ns corresponding to 11.63 mflips (fuzzy logic inference per second) while this amount of the delay in the designed fuzzy controller becomes 52ns that corresponds to 19.23 m...

Journal: :the modares journal of electrical engineering 2010
ali yazdian varjani jo chicharo sarat - perera

this paper presents a new control methodology for active power filters that provide an adaptive online harmonic estimation with partial and selective harmonic reduction schemes, which has been implemented within an integrated controller. the proposed approach is to provide partial and selective reduction of those individual harmonics which exceed the recommended levels as set by regulatory bodi...

Journal: :international journal of electrical and electronics engineering 0
m. r. tousii s. h. hosseinianii mohammad b menhaji

this paper describes how multi-agent system technology can be used as the underpinning platform for voltage control in power systems. in this study, some facts (flexible ac transmission systems) devices are properly designed to coordinate their decisions and actions in order to provide a coordinated secondary voltage control mechanism based on multi-agent theory. each device here is modeled as ...

Journal: :journal of ai and data mining 2015
m. aghaei a. dastfan

the harmonic in distribution systems becomes an important problem due to an increase in nonlinear loads. this paper presents a new approach based on a graph algorithm for optimum placement of passive harmonic filters in a multi-bus system, which suffers from harmonic current sources. the objective of this paper is to minimize the network loss, the cost of the filter and the total harmonic disto...

Mahdi Soleymani , Morteza Montazeri-Gh,

In previous studies, active suspension system in conventional powertrain systems was investigated. This paper presents the application of active suspension system in parallel hybrid electric vehicles as a novel idea. The main motivation for this study is investigation of the potential advantages of this application over the conventional one. For this purpose, a simultaneous simulation is develo...

Journal: :environmental health engineering and management 0
aida tayebiyan environmental health engineering research center, kerman university of medical sciences, kerman, iran thamer ahmad mohammad faculty of engineering, department of civil engineering, universiti putra malaysia, 43300 serdang, malaysia

background: several reservoir systems have been constructed for hydropower generation around the world. hydropower offers an economical source of electricity with reduce carbon emissions. therefore, it is such a clean and renewable source of energy. reservoirs that generate hydropower are typically operated with the goal of maximizing energy revenue. yet, reservoir systems are inefficiently ope...

Electrical Arc Furnace (EAF) is large, nonlinear and time-varying load that affects power quality of the power system by producing many problems such as harmonics, flicker, current unbalance and low power factor. This paper proposes a modified Unified Power Quality Conditioner (UPQC) to reduce power quality problems of EAF and enhance its controllability. Harmonic reduction, power quality impro...

This paper proposes a hybrid switching technique for a domestic PV system with AC-module architecture. In this PV system, independent control of PV modules, which are directly connected to DC terminals of a single-phase cascaded multilevel inverter, makes module-level MPPT possible to extract maximum available solar energy, especially in partial shading conditions. As one of the main contributi...

In order to prevent energy waste by throttle valve in gas pressure reducing station of Neka thermal power plant, a turbo-expander with a capacity of 9.8 MW for the power plant was prepared and installed. Due to the absorption of 63 MVAr reactive powers at the moment of turbo-expander starting, resulted in severe voltage drops in the power plant auxiliary service system. In this paper, while pat...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه صنعتی امیرکبیر(پلی تکنیک تهران) - دانشکده مهندسی برق 1387

رله های دیجیتالی بواسطه ی قابلیت های بسیار زیاد، در سطح وسیعی از شبکه های قدرت استفاده می شوند رله های دیجیتالی شامل چندین رله در یک پکیج تعداد پارامترهایی که در رله های دیجیتال باید تنظیم شود نسبتا زیاد است. از طرف دیگر در یک سیستم قدرت تعداد زیادی از رله های دیجیتالی بکار می رود. لذا افرادی که این نوع رله ها را تنظیم می کنند باید به دانش عمومی تنظیم رله آشنا گردند. موارد فوق این نکته را خاطر ...

نمودار تعداد نتایج جستجو در هر سال

با کلیک روی نمودار نتایج را به سال انتشار فیلتر کنید