control of synchronous generators in power systems

... amplitudes solving the following nonlinear problem: min N n =1 x(n) − x(n)2. (13) The Prony idea consists of first solving the following set of linear equations to find the damping factors ... con-tiguous time windows in the time observation period Tobs 2 Since in distortion assessment in power systems, the waveforms can be considered to be the sum of sinusoids, the damping factors value ... (which may vary in size by hundredths of a percent up to 100% of the fundamental tone) and inter-harmonic tones of interest (which are only a few thousandths of a percent of the size of the fundamental...

Ngày tải lên: 22/06/2014, 23:20

... Objectives of the Study 19 2 Entanglement generation in a spin chain 23 2.1 Spin Chain 23 2.1.1 PST in a Spin Chain with Constant Couplings 25 2.1.2 PST in a Spin Chain with Engineering Couplings ... even-number spin chains 30 2.2 Patterns of J i’s for spin chains 31 2.3 The dynamics of a single excitation in an N = 60 spin chain 32 2.4 The dynamics of a single excitation in an N = 61 spin ... realization of a spin chain of XX model in a linear array of coupled cavities Trang 321.2.1 The spin chain modelThe spin chain model describes a one-dimensional chain of two-level spinswhich are...

Ngày tải lên: 10/09/2015, 15:48

... effect of eliminating the feedback inhibition of TD by Ile (G-I in Fig 3) The main differences from the original control pattern are as follows The range of r1 increases, the modified sys-tem showing ... that in in the b-curve (rimax= 1.40) As a consequence of this property, the b-curve would result in greater increases in flux for high values of rate increase Con-sidering the infinitesimal control ... interactions operating in the system This study will allow investigation of which allosteric inter-actions are relevant for establishing the control pattern of Thr and Ile incorporation into protein and...

Ngày tải lên: 14/03/2014, 23:20

... changes in proteome levels of proteins participating in relevant biological processes are shown in Figure 3b Again, in common with the transcriptome data, most of the changes in protein levels lie in ... construction of dynamic models of the yeast cell pro-in systems biology [26-28] essential and encode evolutionarily conserved proteins of known function that participate inmany protein-protein interactions ... concentrations of intermediates within it To exploit metabolic control analysis in an initial systems biology analysis of the eukaryotic cell, two categories of experiments are required In category...

Ngày tải lên: 06/08/2014, 18:21

... phosphine is a quick and effective tool for the control of stored-product insect pests In view of the scheduled phaseout of methyl bromide under the Montreal protocol, the role of phosphine in grain ... protection of stored grain and dry food from insect infestations Phosphine and methyl bromide are the most widely used fumigants for the control of stored-product insects Phos-phine is mainly used ... (C7H6O) for the control of stored-product insects During previous centuries, traditional agriculture in developing countries has developed effective means for insect control using botanicals Their...

Ngày tải lên: 25/10/2013, 05:20

... fruit and fruit juice involves care at all stages of production,including preharvest practices of planting, growing of fruit, harvesting, post-harvest handling, washing, and cooling and storage contami-P ... is among the mainreasons for contamination in fruit juice Washing and brushing fruit beforethe juicing step is common in juice processing According to one industrysurvey, 98% of orchards surveyed ... nonthermal processing is cur-rently used in various parts of the world in the manufacture of a number ofproducts, including fruit juices, fruit purees, and jams.44 HPP involves sub-jecting either packaged...

Ngày tải lên: 25/10/2013, 21:20

... selective inhibitor of the NA enzyme of influenza viruses [50] It is currently the drug of choice for the treatment of influenza virus infections in human and being stockpiled in many countries in anticipation ... protein that able to interfere with AIV replication by inhibiting viral polymerases in the nucleus and by binding viral components in the cytoplasm The role of the Mx gene in resistance against influenza ... investigation in-vivo is inevitable Molecular approaches including RNAi and transgenic chickens for control of AIV are encouraging The use of short interfering RNA prevents the replication of...

Ngày tải lên: 21/02/2014, 01:20

... database systems, which is applied to characterize the engineering database systems investigated in the remainder of this section 3.1 The (Pure) Relational Database Systems In the introduction ... model of the robot and its surrounding workspace in order to simulate the assembly operation Figure 1 is a schematic rendering of an off-line integrated robotics programming system according to ... Ui:= ui * T; 2.3 Scaling An important concept in viewing geometric objects on a computer display is varying the size in form of scaling (or stretching) Vertices (as endpoints of vectors) can be...

Ngày tải lên: 07/03/2014, 23:20

... fact that ˜f coincides with f in some neighbourhood of this point Thecontinuity of ˜f in the point (t, x∗) follows from the continuity of f and the fact thatany sequence converging in ˜X to x∗can ... ε-neighbourhood of the set of limit points isincluded into the time of being outside of this neighbourhood, and the last is notlarger than the time of final entry in it) The numbers τi, ηiare definite ... each point “a bundle” ofε-motions, {ϕ(t)}, t ≥ 0 going out from this point (ϕ(0) = x) under given value ofparameter k The totality of all ω-limit points of these ε-motions (of limit points of all...

Ngày tải lên: 24/04/2014, 16:50

... being discussed and createsproblems in assessing the extent of progress in establishing democraticcontrol of armed forces A more developed discussion of the problems Trang 19of, and extent of ... legiti-apogee of this trlegiti-adition by its fusing of politiclegiti-al legiti-and militlegiti-arypower in the ideology of its ruling Communist Party and in the running of the state As defenders of the ... undermined the security of the Polishstate Pil´sudski remained the guiding hand in Polish politics until hisdeath in 1935.23 The progressive acquisition of power by GeneralJaruzelski culminating in...

Ngày tải lên: 04/06/2014, 00:37

... imbalance compensation in predistortion linearization systems [5, 7, 9 11] The drawbacks of the existing compensation techniques are the following: (1) offline training using special calibration ... between the input and output of the linearized PA This will demonstrate the IQ imbalance effect on the accuracy of the MOP PD in linearizing the PA and increasing memory effects by thickening the curves ... with an indirect learning structure, as shown in Figure 1 The benefit of this structure is that we can obtain directly the PD parameters instead of assuming a model for the PA, estimating the...

Ngày tải lên: 21/06/2014, 20:20

... comprise a thinning regime are described, that is the thinning type, the intensity of thinning, the thinning cycle, the thinning yield and the timing of thinning. The control ... be thinned there are several choices to be made about the age of first thinning, the type of thinning, the intensity of thinning, the thinning cycle, the thinning yield ... 2.1. Thinning type Thinnings may be either selective or systematic. The most common type of selective thinning in Great Britain is known as intermediate thinning. It involves...

Ngày tải lên: 09/08/2014, 06:22

... step in terminal voltage: (a) no power system stabilizer (PSS) and (b) integral of accelerating power PSS © 2006 by Taylor & Francis Group, LLC 6-37 Control of Synchronous Generators in Power Systems ... stator-based field winding of the AC exciter is controlled from the AVR The static power converter now has a rating about 1/20(30) of the SG excitation winding power rating, as only one step of power amplification ... dynamics in interconnected power systems can be found in the literature [1, 2] 6.6 Voltage and Reactive Power Control Basics Dynamically maintaining constant (or controlled) voltage in a power system...

Ngày tải lên: 21/03/2014, 12:12

... was formed of a single layer of latex, which was held in place against a rubber O-ring by an aluminum ring secured by machine screws This formed a liquid-tight seal, allowing coupling medium ... re-circulating it through a holding vessel contained within a temperature-controlled bath Temperature recording was initiated one minute prior to the start of ultrasound treatment and continued for ... to days of washing in 70% ethanol Tissues were processed into paraffin and μm sections were stained with hematoxylin and eosin using standard methods Digital micrographs were assembled into larger...

Ngày tải lên: 05/03/2014, 17:20

... of Engineering, P R China He is pursuing for his PhD Degree in power engineering and engineering thermophysics of Naval University of Engineering, P R China His work covers topics in finite time ... He is a Professor in the Department of Power Engineering, Naval University of Engineering, P R China Professor Sun is the author or coauthor of over 750 peer-refereed papers (over 340 in English) ... Director of the Department of Nuclear Energy Science and Engineering, the Director of the Department of Power Engineering and the Superintendent of the Postgraduate School Now, he is the Dean of the...

Ngày tải lên: 05/09/2013, 14:59

... tenacity in holding the castle in 1217 Indeed, Nichola’s defence of 22 power and portrayal Lincoln in 1217 was a significant factor in turning the tide of events in favour of King John According to ... than that of her husband Countess Mabel was an important linchpin in continuing the political strategy of the Angevin cause whilst Earl Robert was imprisoned, having a central role in securing the ... she was in fear of marriage is a topos typical in Vitae of female saints.39 Yet the female life cycle can be seen as paramount in defining Christina’s options, since Christina became secure in her...

Ngày tải lên: 14/02/2014, 20:20

... Authority of Singapore Internal Revenue Service Information Technology Job Seekers Classification Index Key Performance Indicator Learning Earning and Parenting Memorandum of Understanding ix x List of ... administration, policy and power In doing so, this section makes visible the ways in which information technologies operate as a productive form of power, giving rise to new ways of thinking ... examine the apparent newness and uniqueness of the internet Examples of prior studies of information technology in government includes a study group of the European Association of Public Administration...

Ngày tải lên: 06/03/2014, 06:21

... ********************************************************************************************************************************************************** In providing this information, the intent is not to make audio/video system professionals into electricians They however need a basic understanding of proper design and installation of power ... grounding can certainly reduce the severity of system noise problems But, regardless of how intelligently we implement system grounding and power distribution, two system “facts of life” remain: Tiny ... manufacturer in the form of appropriate filtering, shielding, and proper shield terminations Integrating Electronic Equipment and Power into Rack Enclosures © 2002-2010 Middle Atlantic Products, Inc Important...

Ngày tải lên: 08/03/2014, 13:20