4calculation+method+for+doubly+fed+induction+generator

... powers quality of a doubly- fed induction generator with a second-order LC filter in the rotor circuit," in 18th International Conference on, 2008, pp 1-6 [7] P A Dahono, "A control method to damp ... Transactions on, vol 33, pp 542-550, 1997-01-01 1997 [9] R Pena, J C Clare and G M Asher, "Doubly fed induction generator using back-to-back PWM converters and its application to variablespeed wind-energy ... With New Topology Filter in Doubly- fed Wind Power System," vol 29, L Yaxi, Ed., 2009, pp 1-7 [5] Q Zhiling and C Guozhu, "Study and Design of Grid Connected Inverter for MW Wind Turbine," in Industry...

Ngày tải lên: 25/08/2016, 19:15

... dụng máy điện dị rotor dây quấn làm việc chế độ máy phát cấp nguồn từ hai phía (DFIG: Doubly – Fed Induction Generator) DFIG làm máy phát đồng trục có ưu điểm bật stator DFIG nối trực tiếp với ... phát thường thiết kế có máy phát đồng trục làm việc với cụm diesel – generator (DG) Hệ thống máy phát đồng trục (SG – Shaft Generator) có nhiều phương án kĩ thuật thoả mãn yêu cầu vận hành, khai...

Ngày tải lên: 25/07/2015, 07:26

... diagnosis of TB The device may represent a new technology for sputum induction for the diagnosis of pulmonary TB The Lung Flute for sputum induction was invented recently by Hawkins in the USA Tracheal ... container For all patients, use of the Lung Flute and sputum induction were performed in a negative ventilation room, as a precautionary infection control measure Patients remained in the room for ... using the Lung Flute may a potential method for sputum induction There are some limitations to the present study This was a preliminary investigation performed only in the setting of a TB clinic,...

Ngày tải lên: 29/03/2014, 03:20

... ‘Grid fault ride through for wind turbine doubly- fed induction generators’ PhD Thesis, Newcastle University, 2008 Peña, R., Clare, J.C., Asher, G.M.: Doubly fed induction generator using back-to-back ... turbines with doubly- fed induction generators’, Wind Eng., 2004, 28, (4), pp 411–434 Hopfensperger, B., Atkinson, D.J., Lakin, R.A.: ‘Stator-flux-oriented control of a doubly- fed induction machine ... wind generator systems and their comparisons’, IET Renew Power Gener., 2008, 2, (2), pp 123–138 Chondrogiannis, S.: ‘Technical aspects of offshore wind farms employing doubly- fed induction generators’...

Ngày tải lên: 27/06/2014, 16:06

... method That is a new proposal of the contr ol structure of the doubly fed control doubly- fed induction machine Based on this method, the active power and the reactive power of doubly doubly -fed ... shaft generator using doubly- fed induction machines on the basis of similar signals from rotor after connecting to the grid 2.3.5 The advantages of the shaft generator system using doubly- fed induction ... control structure of the doubly- fed induction machine in shaft generator on shipboards basing on the rotor similar signal method The control structure of the doubly- fed induction machine will be...

Ngày tải lên: 02/07/2014, 20:34

... the same principle as in the classical method, the rms values of the currents (12) and NGUYEN et al.: PARAMETER IDENTIFICATION METHOD FOR A THREE-PHASE INDUCTION HEATING SYSTEM 4857 Fig Block ... control of the inductor currents will be performed correctly VI C ONCLUSION This paper has described a new method for parameter estimation of a multiphase induction heating system Simulations and ... casting billet induction heating process for hot rolling,” in Proc 3rd Int Conf ISDEA, 2013, pp 942–945 [7] M Souley et al., “Methodology to characterize the impedance matrix of multi-coil induction...

Ngày tải lên: 17/12/2017, 15:23

... technique for pilot estimation combined with wavelet denoising 5.8 MSE performance for channel estimation based different interpolation 114 technique using MMSE for pilot estimation 5.9 MSE performance ... the study and methodology were formed for this research, as follows: Review of previous literature pertaining to available techniques of channel estimation for the OFDM system for solving the ... performance based on QPSK Modulation 83 4.4 The OFDM systems performance based on DBPSK Modulation 85 4.5 The OFDM systems performance based on DQPSK Modulation 87 4.6 The OFDM systems performance...

Ngày tải lên: 26/05/2013, 21:28

... should like to mention at this point that all music presented for study on these pages is original and has been created especially for the guitar EACH composition has been designed to advance ... explained If further information is desired, some very excellent music dictionaries in soft cover editions can be obtained at a small cost.) I feel, however, that with this method, (as with all ... possible Fingering and counting indications have been kept at what I consider a sensible minimum #2 For the gradual development of dexterity in BOTH hands This is the physical part of learning to...

Ngày tải lên: 16/08/2013, 08:28

... SECTION MOST IMPORTANT FOR NOW IS THE PHYSICAL ABILITY TO PERFORM THEM AND EVENTUAL MEMORIZATION OF ALL FORMS, CHORD TYPES AND ROOT LOCATIONS NOTE THAT THESE ARE THE SAME FORMS AS THOSE SHOWN ... This book is a continuation of Volume I, Modern Method for Guitar Most of the terms and techniques are directly evolved from material presented there For example, the entire fingerboard is covered ... inquisitive student and maybe shed some light into the mysterious workings of music for guitar players in general As before, good luck and have fun William G Leavitt ALL SCALES (MAJ and MIN etc )...

Ngày tải lên: 16/08/2013, 08:28

... sludge Nevertheless, quantitative PCR method for Candidatus ‘Accumulibacter phosphatis’ has not been developed yet In this study, quantitative PCR method for Candidatus ‘Accumulibacter phosphatis’ ... quantitative PCR was 1.0 % for Ct value and 11 % for the calculated copy numbers, respectively (n=6) Variation in quantitative PCR only was 0.78 % for Ct value and 7.5 % for the calculated copy ... conditions included a pre-incubation step of at 94 °C followed by 35 cycles of 94 °C for 15 sec, 57 °C for 20 sec, and 68 °C for 15 sec - 38 - Journal of Water and Environment Technology, Vol.5, No.1,...

Ngày tải lên: 05/09/2013, 09:38

... checklist for noise inspection can be used with a high reliance before of noise measuring without necessity to use the instrument in workplaces Therefore, this method is a proper rapid method for exploiting ... screening is a common method for early investigations for separation of study popular (8-12) The Propose of this study was to submit a simply scientifically screening method for inspection of noise ... investigation was compared The suggested method can be used for recognition step of noise assessment in large scale investigations This method is a proper way for exploiting and reducing the expenses...

Ngày tải lên: 05/09/2013, 13:23

... similar conditions to the ones established for the semi-indirect evaporative recover made of ceramic pipes introduced before This test has been performed for outside air temperature of 40 C, 18 ... of the adiabatic tunnel described before To clarify what has been exposed before, the evolution of an air stream originally at 25ºC and 30% of RH is described for different cases of water temperature ... dispositions introduced for energy management, new devices and generators among others, is to reduce the energy consumption in buildings, they must ensure a proper comfort level and well being...

Ngày tải lên: 05/09/2013, 16:10

... points for maximum electrical output for an area of inch in diameter were determined However most researchers have focused on relatively small scale solar simulators in order to achieve a uniform ... 2011 [4] Standards For Simulators Can Vary Widely Solar industry, http://www.solarindustrymag.com Accessed on February 27, 2011 [5] Kohraku S and Kurokawa K., "New methods for solar cells measurement ... [8] Standard specification for direct normal spectrum solar simulation for terrestrial photovoltaic testing, ASTM standard E928, 1983, revised 1985 (American Society for Testing and Materials,...

Ngày tải lên: 05/09/2013, 16:10

... speed and also to make variable speed conditions Induction motor is coupled to induction generator The SVC MERS inputs are connected to the induction generator terminals and the outputs are in star ... to maintain rated voltage of induction generator for variable speed conditions In this experiments, the rotor speed is changed from 0.8 pu to 1.3 pu, while induction generator output power is half ... C=100uF; L=20mH 0.8 0.9 Fig 1.1 Induction motor and generator used in the experiment Relative reactance Fig Harmonic of the injected current current of the induction generator to generate rated voltage...

Ngày tải lên: 15/10/2013, 16:10

... Area 3: One 800 MW generator with FOR= O.18 is added and the annual peak load is increased to 3575 Mw Area 4: One 800 MW generator with FOR= O.18 and one 600 MW generator with FOR= 0.15 are added ... derated states of 50% capacity for the 350 MW and the two 400 MW generators in each area are included Table LOLE Indices for Cases to (in hrsmac) Area 2: Three 197 MW generators are removed and the ... supported areas and therefore the upper limit of each "fictitious generator variable" is assigned as the relative "required load" The "generator variables", the "fictitious generator variables",...

Ngày tải lên: 03/01/2014, 19:35

... Choice of a Transformation Matrix Parallelepiped method H = C, [r] = (H −1 C)[0, 1]n + H −1 [e] = [0, 1]n + C −1 [e] This method breaks down when C is close to singular QR-factorization method C = ... series + remainder term • The method does not impose restrictions on the size of the initial box • An automatic differentiation package for computing Taylor coefficients for the solution to Y = A(t)Y ... − 1)[e0 ] [e] = j=1 For all yi ∈ { b0 + Bα | α ∈ [0, 1]n }, n y(ti+1 ; ti , yi ) ∈ w0 + αj (wj − w0 ) | αj ∈ [0, 1], wj ∈ [wj ] j=1 ⊆ c0 + Cα + [e] | α ∈ [0, 1]n , 12 since for α ∈ [0, 1]n , wj...

Ngày tải lên: 12/01/2014, 22:02

... yapp,2,1 = The iteration formula (7) is now evaluated for m xapp (t) = ∑ j=0 yapp,1, j (t) yapp,2, j (t) , (22) where m = for Case and m = for Case The interval enclosures for all state variables ... nonlinear terms — for the initial conditions y0 app,0 = xapp and yapp, j = 0, ∀ j ≥ Now, the iteration (7) is performed with the improved approximation xapp (t) for ε = which is demonstrated for the simple ... scenarios demonstrate the necessity for study and development of validated methods for both verification and design of modern control strategies 4 C Validated Techniques for the Solution of Initial Value...

Ngày tải lên: 12/01/2014, 22:04

Ngày tải lên: 13/02/2014, 12:20

... pay for each military grade, basic allowance for housing, basic allowance for subsistence, and federal tax advantage accruing to the aforementioned allowances because they are not subject to federal ... 93 Annualized Total Accrual Savings per Two Methods 98 Air Force Force-Shaping Actions 2007, Officers 100 Air Force Force-Shaping Actions 2007, Enlisted Personnel ... ensure high standards for research quality and objectivity The Cost of a Military Person-Year A Method for Computing Savings from Force Reductions Carl J Dahlman Prepared for the Office of the...

Ngày tải lên: 17/02/2014, 23:20

... required for thioflavin T (ThT)-based fibrillation assays (typical concentrations used are 3–10 lm), but is not sufficient for other biophysical studies We therefore examined a number of methods ... were incubated for days with each of the peptides (10 lm), and cells were fixed and used for immunocytochemical analyses Immunocytochemistry Neurons were fixed in 4% paraformaldehyde for 20 at room ... Dr Celia Cabaleiro Lago for useful discussion and Rocio Fedrani for assistance with electron microscopy We are also indebted to Dr You-Di Liao (Academia Sinica, Taiwan) for providing the MetAPTG...

Ngày tải lên: 18/02/2014, 13:20