energy amp power signals
Tài liệu tiếng anh Điện tử công suất mạch MERS A new AC current switch called MERS with low on state voltage IGBTs for renewable energy and power saving applications
Ngày tải lên :
15/10/2013, 16:10
... Fig Example of MERS applications (a)Light intensity control of discharge lamps (b)Voltage and power factor control of induction motor (c)Series compensation in transmission system Fig Example ... control of discharge lamps such as fluorescent and high intensity discharge lamps [6] With a high efficient configuration, energy savings can be achieved with low cost Voltage and power factor control ... wind power conversion system With the trend going toward full-converter solutions for wind power applications, a lot of attention is given to reducing cost and improving the efficiency of the power...
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Work power energy in power system
Ngày tải lên :
05/04/2016, 14:39
... paise Solution Input energy to the kettle = = 0.3 kWh 40 paise/kWh energy in kWh = 0.3 = kW Input power = Time in hours (6/60) Hence, the power rating of the electric kettle is kW Energy utilised ... generate kWh of electrical energy ? Take one litre of water to have a mass of kg (F.Y Engg Pune Univ.) Work, Power and Energy 185 Solution Output energy = kWh = 36 × 10 J Input energy = 36 × 10 /0.7 ... second = 1200 × 9.81 N Power stored = 1200 × 9.81 × 170 J/s = 2,000 kW Power actually available = 2,000 × 0.72 = 1440 kW Energy delivered /day = 1440 × 24 = 34,560 kWh Example 3.14 The reservoir...
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Prospects of concentrating solar power to deliver key energy services in a developing country
Ngày tải lên :
05/09/2013, 14:58
... experience in the areas of energy policy, national and regional energy planning, energy and environmental modelling, promotion of energy and environmental friendly technologies, energy management, decision ... government began in the 1990s to diversify its energy mix to become less reliant on hydropower, mainly by building natural gas-fired power plants [16] Chile’s energy mix relies mostly on oil (56%), secondly ... and grid electrification technologies, prepared for Energy Unit, Energy and Water Department, the World Bank; Discussion Paper, Energy Unit, Energy and Water Department, The World Bank, November...
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Tài liệu tiếng anh Điện tử công suất mạch MERS Improved wind power conversion system using magnetic energy recovery switch MERS
Ngày tải lên :
15/10/2013, 16:11
... strong wind power energy cannot be taken out and it is not efficient Figure (b) is a wind power conversion system with MERS that we are proposing in this paper The MERS can improve a power factor ... improve the output power and efficiency of a wind turbine system with a synchronous generator by applying magnetic energy recovery switch (MERS) to the power conversion system The wind power conversion ... Excitation power (p.u.) Output voltage Vdc (V) with MERS 100 w/o MERS 0 with MERS 0 Ohase current Iu (A) w/o MERS Output Power (p.u.) (a) xs = 0.73(p.u.) (a) Dc output voltage Excitation power (p.u.)...
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Tài liệu tiếng anh Điện tử công suất mạch MERS Power supply for pulsed magnets with magnetic energy recovery current switch
Ngày tải lên :
15/10/2013, 16:11
... TAKAKU et al.: POWER SUPPLY FOR PULSED MAGNETS WITH MAGNETIC ENERGY RECOVERY CURRENT SWITCH 1797 TABLE II PARAMETERS OF MAGNETIC ENERGY RECOVERY TYPE MARX-GENERATOR magnetic energy stored in ... S3 are turned off, the energy which was stored in the inductor is charged in the capacitor and current decreases IV MAGNETIC ENERGY RECOVERY TYPE MARX-GENERATOR A Magnetic Energy Recovery Type ... the bi-directional magnetic energy recovery current switch (a) Current flowing in parallel (b) Load energy is absorbed by the capacitor (c) Off condition (d) Capacitor energy goes to load The current...
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Tài liệu tiếng anh Điện tử công suất mạch MERS Series connected power flow control using magnetic energy recovery switch
Ngày tải lên :
15/10/2013, 16:12
... International Power Electronics Conference, no 4, pp 102-103, April 2000 [10] J Narushima, K Inoue, T Takaku, T Isobe, T Kitahara, and R Shimada, "Application of magnetic energy recovery switch for power ... control switches for power factor correction," PCIM Europe, 2006 [12] S.-K Chung, "Phase-locked loop for grid-connected three-phase power conversion systems," IEE Proc.-Electr Power Appl., vol 147, ... characteristic is more significant for higher power supply voltages, which is natural since reactance reduction is more visible when the current is higher To improve the power flow characteristic, it is possible...
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Tài liệu tiếng anh Điện tử công suất mạch MERS Voltage rating reduction of magnetic power supplies using a magnetic energy recovery switch
Ngày tải lên :
15/10/2013, 16:12
... connected in series to a DC power source parallel conduction mode as Fig 2(a) The magnetic energy is recovered from the electrostatic energy (2) where is the voltage of the power source and is the ... electrostatic energy stored in the capacitor when mode is (c) is equivalent to the magnetic is given by energy stored at the magnet when mode is (a), III MAGNET POWER SUPPLIES USING MERS Power supplies ... the inverter power supply can reduce the total size of capacitor To discuss about it, the energy supplied to the coil is divided between the energy consumed at the coil and the energy which makes...
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Tài liệu ENERGY, POWER, AND POLLUTION CONTROL TECHNOLOGY P1 pdf
Ngày tải lên :
26/12/2013, 01:18
... g/cm3 Energy: kJ = 737.56ft-lbf= 239.01 cal^ - 0.94783 Btu - 3.7251 X 10~4 hp hr - 2.7778 x 10-4 kWhr Specific energy: kJ/kg - 334.54 ft-lbf/lbm = 0.4299 Btu/lbm - 0.2388 cal/g Specific energy ... and Conversion Factors, NASA S.P 9012, 1973 Numerous revisions periodically appear: see, for example, Pure AppL Chem., 51, 1-41 (1979) and later issues Table 39.2 Phase Transition Data for the...
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Tài liệu ENERGY, POWER, AND POLLUTION CONTROL TECHNOLOGY P2 docx
Ngày tải lên :
26/12/2013, 01:18
... wet saturated vapor; g = saturated vapor Rounded off from values of C M Tseng, T A Hamp, and E O Moeck, Atomic Energy of Canada Report AECL-5910, 1977 *The notation 1.0434.-3 signifies 1.0434 X...
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Báo cáo hóa học: " Research Article Link Quality-Based Transmission Power Adaptation for Reduction of Energy Consumption and Interference" pot
Ngày tải lên :
21/06/2014, 11:20
... 0.8 Expected energy consumption (mJ) Expected energy emission (mJ) 0.3 76 Emitted energy Energy consumption Figure 16: Trade off between minimum energy consumption and energy emission power level ... Transmission power level (dBm) 15 (c) Expected energy emission: Mbps 15 109 Expected energy consumption (mJ) 109 108 107 106 105 104 10 Transmission power level (dBm) (d) Expected energy emission: ... 21 Transmission power level 25 29 31 (c) Expected energy emission: 20 Bytes 13 17 21 Transmission power level (d) Expected energy emission: Various packet sizes 104 Expected energy consumption...
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Báo cáo hóa học: " Preparation and Characterization of Nano structured Materials from Fly Ash: A Waste from Thermal Power Stations, by High Energy Ball Milling" potx
Ngày tải lên :
22/06/2014, 18:20
... of the ground fly ash was found out by using BET method The samples were degassed at 350 °C before testing The surface energy of the samples was calculated by measuring contact angle The powder ... Table Surface energy and work of adhesion of fresh as well as ball milled fly ash Fly ash sample Fig Variation of Specific surface area of fly ash with milling time (in hours) Surface energy (mJ/m2) ... providing less quantity High Energy Pulverization of Fly Ash The reduction in particle size of fly ash from micron level to the nano level was carried out using a high -energy planetary ball mill...
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Báo cáo hóa học: " Research Article On Energy-Efficient Hierarchical Cross-Layer Design: Joint Power Control and Routing for Ad Hoc Networks" pdf
Ngày tải lên :
22/06/2014, 19:20
... minimal energy solution 10−3 p Figure 8: Distribution of powers for the minimal energy solution Figure 5: Total transmission power Eb 10−4 p Iterations Figure 6: Energy per bit 10−3 Uniform energy ... iteratively optimizes power and routes The values in Figure represent the total transmitted power obtained over a sequence of iterations: (power control, routing, power control, routing, power control) ... algorithm, the power control optimizes powers based on the current route assignment, while after power assignment, new minimum energy routes are determined based on the current power distribution...
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Báo cáo hóa học: " Research Article Detection of Disturbances in Voltage Signals for Power Quality Analysis Using HOS" ppt
Ngày tải lên :
22/06/2014, 20:20
... discrete version of monitored power line signals are divided into nonoverlapped frames of N samples and the dis- respectively, where tspi,i (n) and tnot,i (n) are the nth samples of the ith transient ... Ribeiro, “Signal processing techniques for power line communication and power quality applications,” Ph.D dissertation, University of Campinas (UNICAMP), S˜o Paulo, a Brasil, April 2005 [2] C ... waveform of voltage signals were synthetically generated The generated disturbances are sags, swells, interruptions, harmonics, damped oscillations, notches, and spikes The sampling rate considered...
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Báo cáo hóa học: " Error Control Coding in Low-Power Wireless Sensor Networks: When Is ECC Energy-Efficient?" potx
Ngày tải lên :
22/06/2014, 22:20
... TRANSMITTED POWER AND PATH LOSS 2.1 Minimum transmitted power Minimizing transmitted RF power is the key to energyefficient wireless sensor networks [1–3] To shed more light on RF transmission power, ... /N0 in dB is an energy ratio, rather than the power ratio S/N The received energy per bit Eb is energy per symbol over code rate Es /R, with constant Es , and N0 is the noise power spectral density ... transmit power is considered herein to be the most critical parameter for a low -power WSN, whose battery lifetime is dependent on power consumption Therefore all transmit power and energy calculations...
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Báo cáo hóa học: " Research Article On Energy-Efficient Hierarchical Cross-Layer Design: Joint Power Control and Routing for Ad Hoc Networks" pptx
Ngày tải lên :
22/06/2014, 22:20
... minimal energy solution 10−3 p Figure 8: Distribution of powers for the minimal energy solution Figure 5: Total transmission power Eb 10−4 p Iterations Figure 6: Energy per bit 10−3 Uniform energy ... iteratively optimizes power and routes The values in Figure represent the total transmitted power obtained over a sequence of iterations: (power control, routing, power control, routing, power control) ... algorithm, the power control optimizes powers based on the current route assignment, while after power assignment, new minimum energy routes are determined based on the current power distribution...
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Báo cáo hóa học: " Analysis of Free Energy Signals Arising from Nucleotide Hybridization between rRNA and mRNA Sequences during Translation in Eubacteria" docx
Ngày tải lên :
22/06/2014, 22:20
... Free energy signal for aceF (a) upstream region and (b) downstream region A sample free energy signal, computed using the gene aceF sequence in E coli, is shown in Figure The estimated free energy ... translated Figure shows an example of the periodogram of a noncoding sequence, 23S rRNA For those free energy signals for which our model (4) is valid, we can evaluate the power of the 1/3 harmonic ... this variable free energy pattern are of note There is a trough of negative free energy at nucleotide position 6 Earlier studies have identified the presence of an upstream free energy trough in...
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Báo cáo hóa học: " Research Article Localized Spectral Analysis of Fluctuating Power Generation from Solar Energy Systems" docx
Ngày tải lên :
22/06/2014, 23:20
... is a measure of the amplitude and frequency of power flow fluctuations of a given persistence, introduced by PV generation It is important to note that the terms power and energy in this context ... square of solar power Accordingly, the fluctuation energy index over all scales represents the integrated square of solar power over the time of persistence and not the integrated solar power Here, ... photovoltaics on the power system This should enable power system operators and energy supply companies to choose appropriate measures regarding demand side management, energy storage, or upgrading...
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Dynamic Model and Control of DFIG Wind Energy Systems Based on Power Transfer Matrix
Ngày tải lên :
27/06/2014, 16:04
... an input mechanical wind power from 0.7 to p.u (70 to 100% of the turbine-generator rated power) The reactive power command is a step change of 0.25 s when the real power is about 0.6 p.u p.u ... Fig 6(a) at mand in reactive power causes a small deviation in real power However, as Fig shows, both real and reactive power quantities accurately track their command signals which means the controllers ... generators in a power system considering reliability and cost,” IEEE Trans Energy Convers., vol 26, no 1, pp 227–234, Mar 2011 [3] T Zhou and B François, Energy management and power control of...
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Hydroelectric Power in Vietnam (VNCOLD Document for the Meeting of ICOLD Committee on “Dams for Hydroelectric Energy” (DHE), 2008) docx
Ngày tải lên :
13/08/2014, 22:21
... Capacity %Hydel in Total Power 4,198 11,286 70,430 132,704 219,104 w w w v 2006 2007 2008 2009 2010 2011 2012 2013 2014 2015 2016 2017 2018 2019 2020 2021 2022 2023 2024 2025 Total Power 37.2% 10,475 ... document from M Luong Van Dai 2/ It is sometimes not clear that Small Powers Plants and IPP are hydroelectric or not 3/Pumped storage power projects are accounted as hydroelectric 4/These figures are ... figures 2005 44.9 47 47 53.5 45.6 2010 70 103 124 107 2015 110 226 257 223 2020 170 Evolution of power generation can be estimated in details according to the Master Plan VI issued on July 18th...
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