sine and cosine component of transformer primary voltage
AN1476 combining the CLC and NCO to implement a high resolution PWM
... headquarters, design and wafer fabrication facilities in Chandler and Tempe, Arizona; Gresham, Oregon and design centers in California and India The Company’s quality system processes and procedures ... WiperLock, ZENA and Z-Scale are trademarks of Microchip Technology Incorporated in the U.S.A and other countries SQTP is a service mark of Microchip Technology Incorporated in the U.S.A GestIC and ULPP ... from this information and its use Use of Microchip devices in life support and/ or safety applications is entirely at the buyer’s risk, and the buyer agrees to defend, indemnify and hold harmless...
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nghiên cứu kỹ thuật điều chế độ rộng xung PWM (Pulse Width Modulation) cho bộ nghịch lưu đa bậc ghép tầng (Cascade inverter)
... c; vmin = a;} } voffset = (vmax + vmin)/2; vasfo = a - voffset; vbsfo = b - voffset; vcsfo = c - voffset; // Gan gia tri cho cac ngo out[0] = vmax; out[1] = vmin; out[2] = voffset; out[3] = vasfo; ... tính điện áp Voffset, nhiên phần mềm Psim khối trực tiếp tính Voffset Vì ta phải dùng khối DLL (Dynamic Link Library) Psim kết hợp với việc viết chương trình Microsoft Visual C++ Borland C++ Đầu ... pháp SFO – PWM biểu diễn dạng toán học sau: Voffset = max(Va , Vb , Vc ) + min(Va , Vb , Vc ) VaSFO = Va – Voffset ; VbSFO = Vb – Voffset ; VcSFO = Vc - Voffset (3.10) (3.11) Phương pháp cho phép...
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Space vector pulse width modulation for multilevel inverters and solution to modulation dependent problems
... 3.9 Voltage VV W , current IV and FFT of voltage VV W at mi =0.90 92 3.10 Voltage VV W , current IV and FFT of voltage VV W at mi =0.94 93 3.11 Voltage VV W , current IV and FFT of voltage ... mi =0.98 94 3.12 Voltage VV W , current IV and FFT of voltage VV W at mi =0.93 96 3.13 Voltage VV W , current IV and FFT of voltage VV W at mi =0.97 97 3.14 Line voltage for 7-level ... voltage, ∆ψcα , ∆ψcβ and |∆ψc | at vc =1.0 p.u and δ=45o 171 5.32 Output voltage, ∆ψc and ia for vc =1.0 p.u and δ=45o 171 5.33 Inverter line voltage vcl , grid voltage vgl , |∆ψc | and...
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Điện tử công suât mạch MMC Control and experiment of pulse width modulated modular multilevel converters
... obtained from Fig 14 Here, the dc supply voltage was E = 70 V, and the ∗ dc voltage command of each chopper-cell was vC = 70 V The ac voltage command of the load was given by: √ v∗ = 2V0 sin ... The dc component of vB ju forms an active power with that of iPu or iNu , and the 50-Hz component of vB ju with that of iPu or iNu To avoid an undesirable effect on the control system, ac components ... is an ac -voltage command for the u-phase load u Note that Fig includes the feedforward control of the dc supply voltage E The voltage command v∗ is normalized ju by each dc-capacitor voltage vC...
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Báo cáo hóa học: " Research Article Bandwidth Optimization in Centralized WLANs for Different Traffic Types" pdf
... values of an almost random nature, as depicted in Figure These results not take into account the minimum CFP and CP sizes mandated by the standard [1, 16], and crucially, there is no means of generating ... and soft reservations of slots (soft reservation being the ability for a station to tentatively reserve a slot, and for it to be made available for other stations if unused) The performance of ... each covering minutes of simulated time However, some of the CFPMAX and CFPREP combinations will result in CP and CFP durations that are less than the minimum mandated by the standard These invalid...
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High-power lead–acid batteries for different applications pps
... between and 60 at different cut-off voltages between 1.60 V and 1.90 V per cell Fig 10 Fast-charging characteristics of 12-V, 65-Ah AGM battery with current limit of 100 A and voltage of 14.4 ... Charging time and initial charging current to return a standard (OPzS) and a CSM gel (OCSV) battery to 100% of discharged capacity after discharge to different depths -of- discharge tion of the grid ... in terms of very poor cycle-life Investigation of the phenomenon revealed that the cause of the failure was the formation of a barrier layer of lead sulfate between the positive grid and the active...
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Báo cáo khoa học: "Surgical treatment for different forms of hernias in sheep and goats" ppt
... hcihw rof demrofrep saw noitcuder nepo ,secnatsni esoht nI seidob ngierof lanimur evomer ot esac ni enod saw ymotonemuR )elecoretsyh( tnetnoc lainreh eht saw suretu divarg ehT yhpahrroinreh erofeb ... 42 rof dlehhtiw saw dooF tnemtaert lacigruS dna ,1 selbaT ni dezirammus si sesac eht fo atad ehT srenwo eht ot sllac enohp aiv ro htiw tcatnoc tcerid yb enod saw hcihw ,sesac eht fo pu wollof ... staog dna peehs ni sainreh fo smrof tnereffid rof tnemtaert lacigruS fo eerged eht dna ainreh fo yrotsih eht neewteb noitalerroc evitisop a saw ereht taht dnuof saw ti ,yduts siht nI selam eht...
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Báo cáo y học: "Antibodies against PM/Scl-75 and PM/Scl-100 are independent markers for different subsets of systemic sclerosis patients" doc
... according to the criteria of the EUSTAR and DNSS network [13,14] Briefly, diffuse SSc (dSSc) and limited SSc (lSSc) were defined according to LeRoy and colleagues [16] and the DNSS and EUSTAR criteria ... programs of EUSTAR and DNSS for the assessment of patients In general, 26 clinical and laboratory findings were assessed and analyzed as described [12-14] Briefly, for the evaluation of fibrotic ... presence of anti-PM/Scl antibodies and mortality could be detected Four out of 35 SSc patients died (11.4%) Correlations between the signal strengths of anti-PM/Scl antibodies and the degree of skin...
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Báo cáo khoa học: "Treatment planning using MRI data: an analysis of the dose calculation accuracy for different treatment regions" ppt
... evaluation of the shape differences of the dose volume histograms (DVHs) for the different calculation geometries using the clinical treatment plan and (ii) comparison of the number of monitor ... densities recommended by the ICRU for bone and lung and with the exact same treatment plan, i.e., the same beam setup and number of MU per beam In this part of the study, we investigated what impact ... the study where the number of MUs required to reach the prescribed dose was evaluated Evaluation of dose calculations Table lists the mean values and standard deviations of the relative differences...
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Báo cáo khoa hoc:" An expression of mixed animal model means equations to account for different and variances in the base" pps
... effects; a is the random b vector of breeding values of base animals; a is the random vector of breeding r values of non-base animals; e is the random vector of residuals; and X, Z and l b , r Z are ... a and a respectively The vector of breeding values of non-base animals can be partitioned as: * where s is a linear transformation of the random vector of the Mendelian sampling effects (s) of ... of breeding values is altered and, in particular, it is no longer valid to assume that the breeding values of the base animals have the same mean and variance, and that the genetic variance of...
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Báo cáo khoa học: " Estimation of pulmonary capillary pressure: different methods for different pathophysiological processes" docx
... every stage of disease and/ or that the methods needed to estimate PCP may need to vary according to the changing patophysiological characteristics of the pulmonary vascular tree Estimation of the ... overestimation of PCP [9,11] Although the start of occlusion can easily be identified during systole, the inflation of the pulmonary arterial catheter balloon is always relatively slow, and accuracy ... point of balloon inflation) could still be enhanced by the use of a superimposed nonoccluded pulmonary arterial pressure curve [9] It is clear from the issues discussed above that estimation of...
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Emerging markets lessons for business success and the outlook for different markets
... Ideas Numbers Guide Style Guide Dictionary of Business Dictionary of Economics International Dictionary of Finance Brands and Branding Business Ethics Business Strategy China’s Stockmarket E-trends ... wife, Antonia, and daughter, Nina, and to my parents and sister (NP) my wife, Maria, and daughter, Natasha, and to my parents, Harry and Irene, and brother, Paul (DT) LESSONS FOR BUSINESS SUCCESS ... normal part of business (and often economic progress) and not as disasters Educate senior management about risks and opportunities One of the most important priorities for those in charge of emerging...
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Electronic and magnetic properties of two dimensional electron gases at complex oxide interfaces for different polar systems and crystallographic orientations
... understanding of underlying physics and origin of most of the properties such as origin of conductivity and magnetism is lacking which remained as puzzles even till now owing to the complexness of ... various combinations of polar/non-polar oxide interfaces, providing us further understanding of the nature of carrier confinement, magnetic interactions and origin of conductivity of the two dimensional ... sizes of A, B-site cations and their bond angles with oxygen are found to be very crucial and shown to create a wide range of properties The nature of A-, B-site cations and combination of both...
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The study of combustion characteristics for different compositions of LPG
... Varieties of LPG bought and sold in variety composition of propane and butane The common composition of LPG contains 60% volume of propane and 40% volume of butane However there have some variations of ... Varieties of LPG bought and sold in variety composition of propane and butane The common composition of LPG contains 60% volume of propane and 40% volume of butane However there have some variations of ... 5.2 Table of number of NOx for sample LPG tank 24 5.3 Table of number of NOx for sample LPG tank 26 5.4 Table of number of NOx for sample LPG tank 28 5.5 Table of Comparison number of NOx for...
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A brand for all seasons? A discussion of brand loyalty approaches and their applicability for different markets
... characteristics of the product and market drive and shape brand loyalty The composite definition of brand loyalty The conceptual definition of brand loyalty that is most often used in brand loyalty research ... alternative brands out of a set of brands and is a function of psychological processes As mentioned previously, it is commonly acknowledged in the literature (Jacoby and Chestnut, 1978; Baldinger and Rubinson, ... Conceptual definition of brand loyalty Classification of brand loyalty The problem does not lie with the conceptual definition of brand loyalty but with the method of operationalising brand loyalty This...
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Báo cáo hóa học: " EXISTENCE OF ZEROS FOR OPERATORS TAKING THEIR VALUES IN THE DUAL OF A BANACH SPACE" potx
... relativization of the weak topology of E, and taking τ as the weak topology of E Due to the kind of continuity we are assuming for A, the function x → A(x),x turns out to be weakly continuous (see the proof ... unbounded retract of C (X,Y ) Proof Assume that A(x) = for all x ∈ X For each ψ ∈ C (X,Y ) and x ∈ X, put T(ψ)(x) = A(x) ψ(x) (21) Since A is continuous and bounded (due to the compactness of X), the ... retract of C (X,Y ) Moreover, from the proof of [5, Th´ or` me 2], it e e follows that the multifunction ψ → T −1 (J(ψ)) is a multivalued contraction, and so, since its values are closed and unbounded,...
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The effect of inactivation for C.parvum by Pulse lamp
... RESULTS AND OBSERVATION Figs and show the experiment results for runs and 2, while figs and show the experiment results on run and fig shows the experiment results on run 1) Comparison of the ... to a turbidity of about 250 NTU before being subjected to an irradiation experiment In run (Table 4), 20 mL of a solution of C parvum (108 oocysts/mL) was applied to city water and then subjected ... runs and (Table 2), glass Petri dishes (5.7 mm dia.) were filled with 10 to 20 mL of a solution of C parvum (106 oocysts/mL) For run (Table 3), actual sludge present in city water was used and...
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Different physical and chemical pretreatments of wheat straw for enhanced biobutanol production in simultaneous saccharification and fermentation
... varied from 2.5 to 5.0% where, 2.5 g and 5.0 g of wheat straw were added The effect of temperature and the effect of combination of xylanase, cellulase, and β-glucosidase were examined during ... Experiment and 2, 1.6 g of wheat straw was mixed in 50 ml of sterilized distilled water in 100 ml shaker flask and autoclaved at 135°C for h During Experiment and 4, 1.6 g of wheat straw in 50 ml of ... pretreatment, the effect of temperature and the effect of combination of xylanase, cellulase, and β-glucosidase were examined during saccharification 2.2.4 Physical and acid pretreatment with...
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Tài liệu A neural-network-based space-vector PWM controller for a three-level voltage-fed inverter induction motor drive doc
... , and sampling time Table II shows the analytical time and for all the regions in the six secexpressions for , , and command voltage vector angle [see Fig 3(c)] tors where ( command voltage and ... shown in (5) and (6), shown at the bottom of the next is the bias time and turn-on signal where at unit voltage Fig shows the plot of (9) for both and states at several magnitudes of Mode ends ... additional , which is shown to be zero in this voltage component case The switching states of the inverter are summarized in , and are the phases and , and Table I, where are dc-bus points, as indicated...
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