ac dc and the dcdu
A park like transformation for the study and the control of a nonsinusoidal brushless DC motor
Ngày tải lên :
03/01/2014, 19:44
... Compensation of the cogging torque The cogging torque T results of the interaction between , the rotor magnets and the stator slots It depends only on the rotor position and has to be compensated by the ... preserves the same advantages as the Park transformation A Mathematical Model of the BDCM We suppose that the motor has the following typical features : - The airgap length is constant and large ... since the magnets are surface mounted and have the same permeability as air As a result, the armature reaction is negligible The magnetic circuit has an important air part so that the effects of the...
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Báo cáo y học: " Effect of chloroquine on reducing HIV-1 replication in vitro and the DC-SIGN mediated transfer of virus to CD4+ T-lymphocytes" pdf
Ngày tải lên :
13/08/2014, 09:20
... perform the same function [16,17] The interaction of HIV-1 with DC- SIGN can lead to either infection of DCs or internalization of the virus and subsequent transfer [18,19] The interaction of HIV-1 and ... and DC- SIGN is mainly dependent on the glycosylation of gp120 and in particular the V3 region of the protein [20] counts and viabilities were identical in the 100 and 200 μM CQ cultures to the ... 6A) These results indicate that the alteration of the PNG sequence of gp120 may alter its binding to DC- SIGN, or alternatively the glycosylation machinery of the cell can influence the interaction...
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High efficiency and digitally controlled AC DC converter with power factor correction and fast output voltage regulation
Ngày tải lên :
09/09/2015, 17:53
... waveform The DC flux density BDC (t) and the DC magnetizing field intensity HDC (t) are given by BDC (t) = HDC (t) = NIL (t) Ac R NIL (t) lm (2.10) (2.11) The AC flux density ∆B(t) and the AC magnetizing ... multiple clock cycles There is a smooth transition between CCM and DCM operations of the boost converter in each AC half cycle and between heavy and light loads with the proposed CCM-DCM digital control ... load efficiency and poor light load power factor are the two major problems hindering the achievement of high energy efficiency and high power factor across the complete load range With the increasing...
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Analysis, design and implementation of high performance control schemes for three phase PWM AC DC voltage source converter
Ngày tải lên :
11/09/2015, 16:02
... of the fundamental voltage on inductance vaL1 idc ,∆idc DC signal and AC signal in DC link current ip ,ip ,in ,in d q d q DC signals in positive and negative d-q frame currents vdc ,∆vdc DC signal ... currents, poor power factor at input AC mains and low frequency ripples at the DC output voltage and they also need large size of AC and DC side filters In order to achieve the stringent power quality ... model, the explanations of the appearance of the even-order harmonics at the dc output voltage and the low frequency odd-order harmonics in the input ac currents under the unbalanced and distorted...
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A soft switch back to back bi directional DC DC converter and the FPGA based digital control design
Ngày tải lên :
12/09/2015, 08:20
... voltage and current to the user loads In the power electronics system, the conversion of power is achieved via the basic power converters, such as the DC- DC, AC- DC, DC -AC converters The main ... ultra-capacitor, and the energy is stored there On the other hand, if the AC load like a traction motor can regenerate power, the bi-directional converter can also store this part of energy to the ... is thus achieved It can be seen from Fig 1.4 that the parasitic capacitance of the switch and the leakage inductance of the transformer form the resonant network, and achieve the ZVS There is...
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Analysis and design of power electronic cell for modular power electronic systems AC DC operation
Ngày tải lên :
29/09/2015, 12:52
... of AC/ DC mode (Output inductance Lout of DC /AC mode): Lin = 6.74mH • Input capacitance of AC/ DC mode (Output capacitance Cout of DC /AC mode): Cin = 3.76uF • DC capacitor: Cdc = 600uF For AC/ DC ... suitable for AC/ DC operation How much the parameter values for an AC/ DC application differ from the DC /AC and DC/ DC converter? In this chapter, investigation is made for the variation of the performance ... relationship omitted for AC/ DC operation This capacitor block will be added to standard cell if the cell works in DC /AC mode Hence, the following parameter for UPEC AC/ DC and DC /AC operation are adopted:...
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Improving the audit process of fixed assets in financial audits conducted by ac auditing and consulting company limited
Ngày tải lên :
11/07/2016, 17:24
... accounting and auditing in order to help individuals and organizations understand the knowledge, enhance understanding financial literacy and accounting in the new context The appearance of the ... of all transaction or not fully understand the transaction should lead to wrong errors in the accounting process 1.1.3.2 The frauds exist in the transaction of fixed assets In fact, the cause-related ... audit plan as: assess the acceptability of the audit and determine the scope of the audit objectives, selecting the audit staff of contracting accountant; gather information, and most importantly...
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Architecture and the UML
Ngày tải lên :
22/08/2012, 10:37
... exhibits - Each use case is a sequence of related transactions performed by an actor and the system in a dialogue Actors are examined to determine their needs - Buyer – post an rfq Principal actors ... Diagram Action associated to the state entry transition (Op1) State entry action (Op2) Activity within the state (Op3) Action associated to internal events (Op4) State exit action (Op5) Action ... objects interaction between these objects 38 Activity Diagram An activity diagram is a variant of statechart diagrams organized according to actions, and mainly targeted towards representing the internal...
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Cambridge.University.Press.Allegories.of.Union.in.Irish.and.English.Writing.1790-1870.Politics.History.and.the.Family.from.Edgeworth.to.Arnold.Oct.2000.pdf
Ngày tải lên :
21/09/2012, 10:39
... and the rich The losers and winners The artists and scientists If they were countries, they’d be Ireland and England Carolyn See, Dreaming: Good Luck and Hard Times in America Of the numbers who ... Union punishes its mother from within and threatens its father, too, ‘‘across the water’’ () The ‘‘legacy’’ () of force and violence, the poem suggests, is more of the same: the crossing of two ... that the uses and meanings of gender vary across the period, especially when they become part of a discursive ensemble for representing Ireland and England in terms of race and class difference and...
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Cambridge.University.Press.Brittany.and.the.Angevins.Province.and.Empire.1158-1203.Oct.2000.pdf
Ngày tải lên :
21/09/2012, 10:46
... on these estates The other contingent lacked the unity of the Richmond tenants These were Bretons from the north-east of the duchy who received grants of land in the midlands, the south-west and ... of the cathedral of Dol were destroyed when the cathedral was attacked by King John in 1203.18 The scarcity of documents from the monasteries, which were in their heyday in the second half of the ... detailed account of the siege of Dol, the cathedral town just across the bay from Mont SaintMichel, but as to rebellion around the borders of Nantes and Anjou, Torigni's account is sketchy and garbled.11...
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Cambridge.University.Press.Gender.Race.and.the.Writing.of.Empire.Public.Discourse.and.the.Boer.War.Sep.1999.pdf
Ngày tải lên :
21/09/2012, 10:54
... Night and the following day, they were ‘‘everyone’’ and ‘‘London’’ and even ‘‘England.’’ They were created as a group by the newspapers, and this chapter examines the mechanism of their creation and ... the food stocks, and the mood of the garrison The tactics of the Daily Mail captured the attention of the nation; the newspaper dramatized the situation of the town by emphasizing the danger that ... examine both the role of the daily press in imperialism during the Boer War and the place of gender and race ideology within the imperialism of the war The publics that were created by the press...
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Cambridge.University.Press.Globalisation.and.the.Western.Legal.Tradition.Recurring.Patterns.of.Law.and.Authority.Mar.2008.pdf
Ngày tải lên :
21/09/2012, 10:54
... Information: The Law, the Practice and the Ideal Cane: Atiyah’s Accidents, Compensation and the Law Clarke & Kohler: Property Law: Commentary and Materials Collins: The Law of Contract Cranston: ... and Legal Theory, pp 2–3, 90 12 Globalisation and the Western Legal Tradition references to ‘Grand Theory’ or ‘big-picture’ approaches, not only the difficulties40 but also the legitimacy attaching ... from the verbs ‘globalise’ and ‘universalise’, suggesting the attempt or purport of the act of globalising and universalising, falling short of the achievement of the actual end of this action...
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Cambridge.University.Press.Poe.and.the.Printed.Word.Jul.2000.pdf
Ngày tải lên :
21/09/2012, 10:58
... Sinbad the Sailor Poe and the printed word and Jack and the Beanstalk; new London editions of these two works appeared the year the Allan family came to England.3 So did new editions of The History ... ago? Was there not Anacreon too, and Catullus, and Ovid ± all translated, and readily accessible? And then ± bless all their souls! ± had the dear creatures forgotten Tom Moore? But the handwriting, ... the Rotunda: ``They have nearly ®nished the Rotunda ± The pillars of the Portico are completed and it greatly improves the appearance of the whole ± The books are removed into the library ± and...
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Cambridge.University.Press.Press.Politics.and.the.Public.Sphere.in.Europe.and.North.America.1760-1820.Jul.2002.pdf
Ngày tải lên :
21/09/2012, 10:58
... variety of approaches They examine the structure of the press; the methods used to control it by political authorities and their effectiveness; the journalistic texts themselves; and the political ... texts, their presentation and format, the topics they covered, the way issues were presented and the messages, overt and implicit, that they contained Such a comprehensive approach to the comparative ... one on the concept of Fatherland in the Netherlands from early modern times till World War II and one on Dutch lieuxde-m´moire e Acknowledgements We are grateful to the following, for their generous...
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Cambridge.University.Press.The.Crisis.of.Literature.in.the.1790s.Print.Culture.and.the.Public.Sphere.Nov.1999.pdf
Ngày tải lên :
21/09/2012, 11:00
... conservative propaganda, and with the break up of the radical associations and the consequent erosion of the links between these organisations and other intellectual currents and circles, the conditions ... journal, The Reflector: ‘Pursue the course of poetry in England, and you will find it accompanied with literature [England’s poets] by their literature enriched their poetry; and what they borrowed ... in the more pressing conflicts of the age The complex intersection of these two histories – the political turmoil of the 1790s and the broader hegemonic shift towards the meritocratic bias of the...
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Cambridge.University.Press.The.Works.of.Archimedes.Volume.1.The.Two.Books.On.the.Sphere.and.the.Cylinder.Translation.and.Commentary.May.2004.pdf
Ngày tải lên :
21/09/2012, 11:00
... taken, the straight between the points either all fall on the same side of the surface, or some on the same side, and some on itself, but none on the other side /5/ And, when ... the center of the sphere, I call the figure internally contained by the surface of the cone, and by the surface of the sphere inside the cone, a “solid sector.” /6/ And when two cones having the ... Translation and Commentary On the Sphere and the Cylinder, Book I On the Sphere and the Cylinder, Book II Eutocius’ Commentary to On the Sphere and the Cylinder I Eutocius’ Commentary to On the Sphere and...
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Cambridge.University.Press.War.and.the.Law.of.Nations.A.General.History.Sep.2005.pdf
Ngày tải lên :
21/09/2012, 11:02
... authors, the patience of readers and the economics of the publishing industry conspire to keep this account at the level of grand theme or contour rather than of exacting detail It is therefore ... individual, hand-to-hand combat Grand strategy, on the other hand, remained the preserve of Tiw.11 In India, too, much the same phenomenon was apparent in the role of Indra, the chief of the Vedic ... result of the crumbling of older conceptions of legitimacy and the rise of new aspirations for democracy and the self-determination of peoples The result was the emergence of a body of law on the recognition...
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Financial liberalisation and the relationship between finance and growth
Ngày tải lên :
24/10/2012, 08:50
... When we omit the statistically insignificant autocracy interaction terms, but retain the interaction terms from emerging market democracies and OECD democracies and retain ETHFRAC and ENGLISH, ... financial transactions associated with the underlying current account transactions might produce benefits different from liberalizing the underlying transactions themselves The second is whether financial ... used to create the interaction terms, which has the effect of reducing the Variance Inflation Factor in most cases.3 V METHODS, DATA, and MODELS Methods We subtract the means of the variables...
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Inflation Targeting and the IMF
Ngày tải lên :
24/10/2012, 09:27
... that can be tackled through the choice of the measure of inflation to be targeted, the level of the target, the acceptable range of variation of outcomes around the target, and the pace of disinflation ... widening of the exchange rate band and then abandonment of the band altogether.31 Indeed, the dating of 29 The methodology and use is described in Fraga, Goldfajn and Minella (2003) See also Central ... measured by the standard deviation of the variable 21 Are the findings being driven by the way the sample is partitioned and by the choice of comparator countries? The robustness of the results...
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