electric motors and drives anderson sc
Electric motors and drives technical manual 2010 edition
... Slip - ring motors, commutator motors and brake motors can all be made in flameproof versions. No external parts may cause sparks. The motors must have both an interna l and an external earthing screw. Pressurized ... closely on the IEC standards (for example, Germany's VDE 0530 standard and Great Britain's BS 2613 Standard closely parallel the IEC 34 - 1 standard). The N EMA and IEC standards are quite ... major categories: NEMA and IEC (and its derivatives). In North America, the National Electric Man ufacturers Association (NEMA) sets motor standards, including what should go on the nameplate (NEMA Standard...
Ngày tải lên: 12/01/2014, 10:43
Electric Machines and Drives Part 1 pot
... measurement method, as described in the Institute of Electrical and Electronics Engineers (IEEE) “Standard Test Procedure for Polyphase Induction Motors and Generators” IEEE 112-B and in its Canadian ... Medium voltage motors • Repaired motors • TENV and TEAO enclosures It’s relevant to notice that regulation concerning single phase and three-phase small (42/48 and 56 frame) motors is ready, ... be obtained from orders@intechweb.org Electric Machines and Drives, Edited by Miroslav Chomat p. cm. ISBN 978-953-307-548-8 ELECTRIC MACHINES AND DRIVES Edited by Miroslav Chomat Contents VI Swarm...
Ngày tải lên: 21/06/2014, 01:20
Electric Machines and Drives Part 2 docx
... Canada with the adoption of Standard CAN/CSA- Electric Machines and Drives 14 Fig. 7. Stator Premium motors Fig. 8. Rotor Premium motors Electric Machines and Drives 16 Fig. 11. ... incentives and voluntary measures for the energy efficiency of electric motors is not sufficient, as it is prerequisite to implement mandatory measures for Electric Machines and Drives 22 ... (2008a) “Barriers and incentive policies to high-efficiency motors and drives market penetration,”. IEEE International symposium on power electronics, electrical drives, automation and motion SPEEDAM...
Ngày tải lên: 21/06/2014, 01:20
Electric Machines and Drives part 6 ppt
... L m d dt i s (26) 102 Electric Machines and Drives where R s , R r , L s and L r are the stator/rotor resistances and inductances, L m is the magnetizing inductance, J is the rotor inertia, B is the viscous ... f ), a proportional integral compensation is proposed, as follows 100 Electric Machines and Drives Electric Machines and Drives 90 incorporated into a vector controlled induction motor drive. ... I s = I qs , I ds , λ r = λ qr , λ dr and V s = V qs , V ds denote stator current, rotor flux and stator voltage vectors, where subscripts d and q stand for vector components in (q-d) reference...
Ngày tải lên: 21/06/2014, 01:20
Electric Machines and Drives part 7 ppt
... ω r Ψ d rc (62) v d sc = R rc i d sc + L sc di d sc dt −ω c L sc i q sc + L mc di d rc dt −ω c L mc i q rc v d sc = R sc i d sc +(L sc i d sc + L mc i d rc )s −(L sc i q sc + L mc i q rc )ω c v d sc = R sc i d sc + dΨ d sc dt −ω c Ψ q sc (63) v d rc = ... ω p Ψ q rp (58) Electrical system equations for control machine: v q sc = R sc i q sc + L sc di q sc dt + ω c L sc i d sc + L mc di q rc dt + ω c L mc i d rc v q sc = R sc i q sc +(L sc i q sc + L mc i q rc )s ... L mp i d rp )ω p 126 Electric Machines and Drives The flux linkage current relations are: Ψ q rc = L sc i q sc + L mc i q rc Ψ d sc = L sc i d sp + L mc i d rc (59) v q sc = R sc i q sc + dΨ q sc dt + ω c Ψ d sc (60) v q rc =...
Ngày tải lên: 21/06/2014, 01:20
Electric Machines and Drives part 8 pdf
... voltages v rGa and v rGb , the IM rotor speed ω mM and its estimation ˆ ω mM , the estimated IM load torque ˆ τ ML , and the estimated IM speed, given by 132 Electric Machines and Drives 52.6 52.65 ... 1999. 144 Electric Machines and Drives equation ¯ σ q = L sq L rq − L 2 mq , ¯ σ d = L sd L rd − L 2 md , p is the poles pairs and n is the relationship between the number of turns for auxiliary and ... L mc di d sc dt −ω r L mc i q sc 0 q r = R r i d r +(L r i d r + L mp i d sp − L mc i d sc )s +(L r i q r + L mp i q sp − L mc i q sc )ω r 0 q r = R r i d r + dΨ d r dt + ω r Ψ q r (67) The electrical...
Ngày tải lên: 21/06/2014, 01:20
Electric Machines and Drives part 9 potx
... in electric drives. The excellent characteristics of PSO may be successfully used to optimize the performance of electric machines and electric drives in many aspects. It is estimated that, electric ... 2009. IECON ’09. 35th Annual Conference of IEEE, pp. 1003 –1008. 160 Electric Machines and Drives Electric Machines and Drives 168 Are all possible operating conditions optimized varying ... 3. Motor parameter identified in simulation. 154 Electric Machines and Drives Swarm Intelligence Based Controller for Electric Machines and Hybrid Electric Vehicles Applications 163 r M L lM L mq L lr + - (1/k) ω r λ dr + - V qs r r i qs i qr R qf...
Ngày tải lên: 21/06/2014, 01:20
Electric Machines and Drives part 11 docx
... Electric Machines and Hybrid Electric Vehicles Applications 191 (a) The power sharing between FC and SC on NEDC driving cycle (b) The power sharing between FC and ... the optimal power sharing based PSO and the comparative study for the FC /SC powertrain are summarized in Fig.21 [Hegazy et. al 2010]. Electric Machines and Drives 192 (c) The Comparative ... respect to pure fuel cell without SC Fig. 21. The results of the optimal power Control for FC /SC Swarm Intelligence Based Controller for Electric Machines and Hybrid Electric Vehicles Applications...
Ngày tải lên: 21/06/2014, 01:20
Electric Machines and Drives part 12 pot
... function of stator flux and currents is given by: Electric Machines and Drives 218 the speed signal. Since there is no need for speed and position signals, a DTC scheme appears to be a ... references and estimated values of torque and flux magnitude and also uses the position of the estimated flux vector. The torque and flux magnitude error signals are the inputs to the torque and flux ... Correa et al. (2004). The transformation matrix and its application can be written as Electric Machines and Drives 226 voltage vector and then will be synthesized by a PWM technique (Jabbar...
Ngày tải lên: 21/06/2014, 01:20
Schneider Electric-Altivar 71 Variable speed drives for synchronous motors and asynchronous motors potx
Ngày tải lên: 28/06/2014, 16:20
Altivar 71Variable speed drives for synchronous motors and asynchronous motors Installation pptx
Ngày tải lên: 28/06/2014, 16:20
Báo cáo y học: "Comparison of Classical and Clozapine Treatment on Schizophrenia Using Positive and Negative Syndrome Scale of Schizophrenia (PANSS) and SPECT Imaging"
... rights reserved Comparison of Classical and Clozapine Treatment on Schizophrenia Using Positive and Negative Syndrome Scale of Schizophrenia (PANSS) and SPECT Imaging Research paper Received: ... frontal and cerebellum have no significant correlation with PANSS scores. Int. J. Med. Sci. 2005 2 86 Figure 2: SPECT by 99mTc-ECD in a 39 year-old drug naïve schizophrenia, pre (up) and post ... times the day before the scans with PANSS, a 33-item scale with 1 to 7 points (normal to extremely abnormal) for each item and sub-scores for 7 positive, 7 negative, and 16 global psychopathological...
Ngày tải lên: 02/11/2012, 11:12
Distributed Algorithms and Protocols for Scalable Internet Telephony
... describe an implementation of this protocol in software, and discuss applications we have built with it. We consider interconnection with the telephone network, and focus on the problem of discovery ... service discovery problem. After reviewing existing protocols for resource discovery (and finding them lacking for wide area applications), we present a scalable protocol for wide area service discovery, which ... that carries voice and video between two points on an IP network. The transport system is responsible for handling packet loss, packet jitter, and delay. On the Internet, voice and video transport...
Ngày tải lên: 06/11/2012, 10:35
Hegel’s analysis of mind and world - the Science of Logic
... content. Science of Logic,p.; Wissenschaft der Logik, ,p.; HeW, ,p.. Science of Logic,p.; Wissenschaft der Logik, ,p.; HeW, ,p.. The Science of Logic sense of mind and ... how his old friend (and later opponent), Schelling, was to construe Hegel for posterity. Science of Logic,p.; Wissenschaft der Logik, ,p.. Science of Logic,p.; Wissenschaft der Logik, ... als kritische Theorie der Bedeutung (Paderborn: Ferdinand Sch¨onigh, ). Hegel, Science of Logic,p.; Wissenschaft der Logik, ,p.; HeW, ,p.. Hegel’s analysis of mind and...
Ngày tải lên: 01/11/2013, 08:20
Kantian paradoxes and modern despair - Schopenhauer and Kierkegaard
... comic.” Schelling’s Kierkegaard’s Journals (trans., selected, and with an introduction by Alexander Dru) (New York: Harper and Row, ), Remark .InConcluding Unscientific Postscript, he ... its phenomena, and would accrue precisely to the most perfect of them,” ibid., ,p.; § . Schopenhauer and Kierkegaard abandoned Kantian moral and political hopes altogether. Schopenhauer, ahead ... of Fries and his school. Schopenhauer’s own life overlapped that of the post-Napoleonic gen- eration: he was born in , and he died in . Because his father was a wealthy businessman, Schopenhauer...
Ngày tải lên: 01/11/2013, 08:20
History and Nature of Science
... curing diseases, and solving global and environmental prob- lems. Scientists also seek to use, predict, and control nature—to use sunlight and water for electrical power generation, to forecast the weather and ... will briefly describe the nature of scientific knowledge and how beliefs and controversies play a part. Facts Scientific knowledge is dependent and inseparable from facts. The principles of the scientific ... and tries to make it work again, so the scientist looks at nature and tries to understand it. The curiosity CHAPTER History and Nature of Science IN THIS chapter, you will read about what drives...
Ngày tải lên: 02/11/2013, 17:20
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