simulation waveforms of llc resonant converter

... ensure stability of the system DESIGN PWM Construction In principal, a PWM is created by the combination of two parameters The first being a repeating trigger, which determines how often we pulse ... goes high, which resets the flip-flop, forcing the Q output of the flip-flop to go low U3 is now inactive due one of the two inputs of the gate being low FIGURE 5: U4 is used to get the NCO back ... solution may still be attractive for a number of applications, adding an additional PWM to the capability of the device, or having a constant on/off-time variable frequency PWM, where the pulse...

Ngày tải lên: 11/01/2016, 16:57

... 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; ... 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 ... hàm để 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...

Ngày tải lên: 08/07/2015, 21:27

... α component of predicted converter flux ψcα , actual converter flux ψcα and flux error ∆ψcα at ψc = 1.0 p.u and δ = 45o 139 5.8 The β component of predicted converter flux, actual converter flux ... balance xiv List of Tables 1.1 The number of components in NPC topology 2.1 Switching Sequence for of sector of 3-level Inverter 61 2.2 Steps Required for SVPWM of 3-level, 5-level ... Radhe Govind iii Contents Acknowledgement i Table of Contents iii Summary xi List of Tables xiv List of Figures xvi List of Symbols xxiii List of Abbreviations xxvi Introduction 1.1 Multilevel...

Ngày tải lên: 14/09/2015, 08:37

... vuv 40 Proportional gain of averaging control Integral gain of averaging control Proportional gain of current control Integral gain of current control Proportional gain of balancing control [A] ... E Proportional gain of averaging control Integral gain of averaging control Proportional gain of current control Integral gain of current control Proportional gain of balancing control K1 ... Professor in the department of electrical and electronic engineering at the Tokyo Institute of Technology His research interests are self-commutated converters for utility applications Hirofumi...

Ngày tải lên: 15/10/2013, 16:24

... useful PDF of the waiting times is often intractable However, we can readily extract the set of moments (Mn ) of the PDF distribution using the following formula: s=0 (14) All the properties of a ... 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 ... start times of the voice generators are random over the first two seconds of the simulation The AP model, which is based on the generic node model, controls the CFP with the transmission of beacons,...

Ngày tải lên: 22/06/2014, 19:20

... 494–504 jor disaster 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 ... network of vertical and horizontal resistances A comparison of cells with plates of the same height (555 mm) shows that the CSM cell has an internal resistance, that is about 17% lower than that of ... battery to 100% of discharged capacity after discharge to different depths -of- discharge tion of the grid [18–20] The benefits, especially at high discharge rates, are similar to the use of negative...

Ngày tải lên: 05/07/2014, 20:21

... 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...

Ngày tải lên: 07/08/2014, 20:23

... capacity of a single breath (DLCO-SB) method Digital ulcers were defined as a loss of both epidermis and dermis in an area of at least mm in diameter at the distal phalanx of fingers Elevation of serum ... arterial pressures of 25 mm Hg at rest and 30 mm Hg while exercising or by the presence of a pulmonary arterial systolic pressure of greater than or equal to 40 mm Hg and signs of right heart failure ... RA None of the healthy blood donors exhibited either of these antibodies Therefore, anti-PM/Scl antibody detection revealed an overall specificity for SSc of 96.9% The specificities of anti-PM/Scl-75...

Ngày tải lên: 09/08/2014, 01:22

... 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 ... Prevention of Accidental Exposures to Patients Undergoing Radiation Therapy Annals of the ICRP, Publication 86, Stockholm 2000 27 Webster GJ, Rowbottom CG, Mackay RI: Evaluation of the impact of dental ... Modern treatment planning systems often use a conversion of the Hounsfield numbers to relative electron density to calculate doses This can be done through use of generic formulas[19] or via a...

Ngày tải lên: 09/08/2014, 09:20

... 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 ... 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 animals with known ... is twice that of the Mendelian variance In a Gaussian setting, Henderson [6] derived a modification of the mixed model equations (MME) which led to the obtaining of predictors of breeding values...

Ngày tải lên: 09/08/2014, 18:21

... 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 ... occlusion during systole may lead to 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 ... 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...

Ngày tải lên: 12/08/2014, 22:21

... emerging-market business ceos of companies that are successful in emerging markets have often made a point of convincing analysts and shareholders about the benefits of the long-term growth that ... developed world are often judged by But many chief executives of listed companies are unwilling to adopt longer-term targets Managing the expectations of senior management is one of the top three ... markets than in developed markets and the outcome of intelligence gathering is often disappointing In the majority of emerging markets, data are often unreliable, vague and hard to find Needless...

Ngày tải lên: 14/05/2015, 14:57

... spacing of (100) STO of 0.39 nm (c) AFM topography image of the STO (110) surface after treatment.(d) AFM height profile showing the step height is equal to a unit cell spacing of (110) STO of 0.278 ... 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 ... and Hi, as a function of the angle of the magnetic field Inset is a schematic of the co-ordinate system showing the direction of the applied field H Figure 8.1: A schematic of the LAO/STO sample...

Ngày tải lên: 10/09/2015, 09:11

Ngày tải lên: 31/12/2015, 16:35

... 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 ... 1.1 Figure of atomic structure of Propane 1.2 Figure of atomic structure of n-butane 1.3 Figure of atomic structure of iso-butane 2.1 Graph of Propane Butane Mixture Vapor 2.2 Graph of Propane ... combustion of different fuel 4.1 Table of CV for sample LPG tank 17 4.2 Table of CV for sample LPG tank 18 4.3 Table of Comparison Calorific Value for each sample 19 5.1 Table of number of NOx for...

Ngày tải lên: 06/06/2016, 10:42

... professional services'', Journal of the Academy of Marketing Science, Vol 25 No 1, pp 4-17 Peter, J.P and Ryan, M.J (1976), ``An investigation of perceived risk at the brand level'', Journal of ... combination of attitudinal or behavioral This paper will continue by proposing a classification of brand loyalty measures, namely that different types of markets may require different methods of measuring ... I 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...

Ngày tải lên: 24/09/2016, 18:06

... A(x∗ ) = Proof Identifying E with E∗ , we apply Theorem taking X = Br , with the relativization of the weak topology of E, and taking τ as the weak topology of E Due to the kind of continuity ... function x → A(x)(y) is continuous for each y in a dense subset of E Likewise, essentially the same proof gives the following version of Theorem 1, for r = ∞ Theorem Let X be a paracompact topological ... 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...

Ngày tải lên: 23/06/2014, 00:20

... 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 adjusted to a turbidity of about 250 NTU before being ... gradient of the change in inactivity varied in the case of the pulse lamps with 80 mJ/cm2 as the turning point Fig demonstrates that the pulse lamps displayed superior ability in terms of inactivation ... accuracy of 95%), and a limit detection sensitivity of about 1ogs UV dose [mJ/cm2] UV dose [mJ/cm2] ● LPUV □ Pulse-Lamp ▲ 1kW-MPUV ● LPUV □ Pulse-Lamp ▲ 1kW-MPUV Fig Inactivation effect of the...

Ngày tải lên: 05/09/2013, 09:08

... concentration was 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 ... reesei with the enzyme activity of 700 IU/g, and Novozyme 188 is composed of Cellobiase from Aspergillus niger with the enzyme activity of 250 IU/g The effect of temperature was examined where ... 3.0 g of glucose and 0.1 g of yeast extract was added to distilled water to produce 100 ml of P2 medium in a 250 ml glass vial This vial was sterilized at 121°C for 15 Approximately 1.0 ml of each...

Ngày tải lên: 05/09/2013, 15:28

... plots of (5) and (6) in mode which are at higher voltages Note that the curves are not symmetrical because of saturation The saturation of in sector mode is eviat dent from the waveforms of Fig ... Chairman of the IEEE Industry Applications Society (IAS) Industrial Power Converter Committee, and IAS member of the Neural Network Council He has been a Member of the Editorial Board of the PROCEEDINGS ... training data were generated by simulation of the conventional SVM algorithm The angle training of the network was performed in the full cycle with an increment of The training time was typically...

Ngày tải lên: 22/12/2013, 08:16