نتایج جستجو برای: power takeoffs

تعداد نتایج: 487068  

ژورنال: :مکانیک سازه ها و شاره ها 2012
امین حاجی زاده

this paper presents a control strategy developed for optimizing the power flow in a fuel cell hybrid vehicle structure. this method implements an on-line power management based on the optimal fuzzy controller between dual power sources that consist of a battery bank and a fuel cell (fc). the power management strategy in the hybrid control structure is crucial for balancing between efficiency an...

Journal: :سیاست 0
عباس منوچهری ایرج رنجبر

in this research, the relation between political philosophy and power in political thought of leo strauss and michel foucault has been discussed. to nietzsche and his different definition of power, this concept had close relationship with centralization and political rulership, so that political philosophy as a seeking to reach the truth, its relation to power was defined as a reply to justify ...

Journal: :jundishapur journal of health sciences 0
seyed ali jozi department of biology and marine science, science and research branch, islamic azad university, tehran north branch, tehran, ir iran shabnam saffarian islamic azad university, ahwaz science and research branch, ahvaz, ir iran shabnam saffarian islamic azad university, ahwaz science and research branch, ahvaz, ir iran

precise identification of the risks of power plants as a part of a comprehensive safety analysis is recommended by monitoring organizations. assessment and risk management techniques in industrial activities through the use of preventive approach to identify hazards , assess and control safety - health risks unit is studied. in this study, risks and effects of abadan gas power plant were studie...

Journal: :the international journal of humanities 2004
seyed kamaleddin mousavi

people usually associate power with military force, multinational corporations, as well as ele-vated political positions. however, marriage and family are not exempted from power strug-gles too; couples often encounter power issues. present article discusses power in families with focussing on power between married partners or conjugal power.the paper also high-lights some of the questions like...

Journal: :international journal of group theory 2015
mostafa shaker mohammadali iranmanesh

abstract. in this paper we study some relations between the power andquotient power graph of a finite group. these interesting relations motivateus to find some graph theoretical properties of the quotient power graphand the proper quotient power graph of a finite group g. in addition, weclassify those groups whose quotient (proper quotient) power graphs areisomorphic to trees or paths.

Landing gear is a structure that is mounted under the fuselage and helps the aircraft in takeoffs and landings. The most important duty of landing gear is the control of vibration exerted on the system through the shock absorber which is a common component to all the landing gear. Considering the importance of this issue, the necessity of investigating shock absorber with features such as high ...

Electricity generation in thermal power plants as the largest producer of electricity in Iran is associated with greenhouse gas emissions. In this paper, using the Malmquist-Luenberger method, green productivity, and efficiency changes are measured for 31 thermal power plants (including 12 steam power plants, 13 gas power plants, and six combined cycle power plants) during 2009-2016. The result...

Journal: :energy equipment and systems 0
seyed-hadi mozafarpoor-khoshrodi electrical engineering, najafabad branch, islamic azad university, najafabad, isfahan, iran ghazanfar shahgholian electrical engineering, najafabad branch, islamic azad university, najafabad, isfahan, iran

one of the main problems in wind energy conversion system (wecs) is how to achieve maxim­u­m output power in different wind speeds. maximum methods for maximum power point tracking in wind energy conversion syst­e­ms require the knowledge of system characteristics and mechanic sensors. so, using these methods practically will follow with high price and an abundant difficulties. in this paper, n...

Journal: :journal of operation and automation in power engineering 2014
r. kazemzadeh e. najafi aghdam m. fallah y. hashemi

this paper presents a comparative analysis between two current control strategies, constant source power and generalized fryze current, used in active power filter (apf) applications having three different modulation methods. the hysteresis band (hb) and first-order delta-sigma modulation (dsm) as well as the second-order dsm is applied. the power section of the active power filter is viewed as...

Journal: :journal of operation and automation in power engineering 2015
s.m. mohseni-bonab a. rabiee s. jalilzadeh b. mohammadi-ivatloo s. nojavan

optimal reactive power dispatch (orpd) is a multi-variable problem with nonlinear constraints and continuous/discrete decision variables. due to the stochastic behavior of loads, the orpd requires a probabilistic mathematical model. in this paper, monte carlo simulation (mcs) is used for modeling of load uncertainties in the orpd problem. the problem is formulated as a nonlinear constrained mul...

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