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machines and inventions - factoscope

Tài liệu Notes for an Introductory Course On Electrical Machines and Drives E.G.Strangas MSU Electrical ppt

Tài liệu Notes for an Introductory Course On Electrical Machines and Drives E.G.Strangas MSU Electrical ppt

... basic concepts and build the equations and circuits correspondingfirst to an ideal transformer and then to typical transformers in use. We’ll introduce and work withthe per unit system and will ... class and in practice.In the present form this text is to be used solely for the purposes of teaching the introductory course on Energy Conversion and Power Electronics at MSU. E.G.STRANGAS E. Lansing, ... figure 3.3. An ideal transformer has an N N1 2Fig. 3.3 Symbol for an ideal transformerinteresting characteristic. A two-port network that contains it and impedances can be replaced by an equivalent...
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Chapter 10  DC machines and drives

Chapter 10 DC machines and drives

... /)]()−+±ωω (10. 4-15) 418 DC MACHINES AND DRIVES 10. 8. TWO-QUADRANT DC / DC CONVERTER DRIVE A simplifi ed schematic diagram of a two-quadrant chopper supplying a dc machine is shown in Figure 10. 8-1 ... by John Wiley & Sons, Inc. DC MACHINES AND DRIVES 10 380 DC MACHINES AND DRIVES is into the paper in coil sides a 1 , A 1 ; a 2 , A 2 ; . . . , and out in coil sides ′a1, ′A1; ... closed and S 3 and S 4 are opened. This cycling will continue until the commanded current is changed. It is apparent from Figure 10. 11-2 and Figure 10. 11-3 396 DC MACHINES AND DRIVES Since...
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Tài liệu Báo cáo khoa học:

Tài liệu Báo cáo khoa học: "Reading Level Assessment Using Support Vector Machines and Statistical Language Models" pdf

... of using statistical language models.In this paper, we also use support vector machines to combine features from tradi-tional reading level measures, statistical language models, and other language ... Computational LinguisticsReading Level Assessment Using Support Vector Machines and Statistical Language ModelsSarah E. SchwarmDept. of Computer Science and EngineeringUniversity of WashingtonSeattle, ... reading level as-sessment that uses support vector machines (SVMs)to combine features from statistical language mod-els (LMs), parse trees, and other traditional featuresused in reading level assessment. The...
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Edison, His Life and Inventions pdf

Edison, His Life and Inventions pdf

... set encoding: ASCII*** START OF THIS PROJECT GUTENBERG EBOOK EDISON, HIS LIFE AND INVENTIONS ***Produced by Charles Keller and David WidgerEDISON HIS LIFE AND INVENTIONS By Frank Lewis DyerGeneral ... and especially of the loan of many interesting and rare photographs from her private collection.EDISON HIS LIFE AND INVENTIONS Edison, His Life and Inventions, by 5 Four old Michigan Central cars ... IN THE CENTRAL WEST Edison, His Life and Inventions, by 2 life, and the revolver, guncotton, and nitroglycerine added to the agencies for slaughter. New metals,chemicals, and elements had become...
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machines and mechanisms

machines and mechanisms

... to Mechanisms and Kinematics 27FIGURE P1.14 Problems 14 and 39.FIGURE P1.16 Problems 16 and 41.FIGURE P1.15 Problems 15 and 40.FIGURE P1.17 Problems 17 and 42.FIGURE P1.18 Problems 18 and ... MobilityHaving four links and four pin joints,n = 4, jp= 4 pins, jh= 0 CONTENTS1 Introduction to Mechanisms and Kinematics 1Objectives 11.1 Introduction 11.2 Machines and Mechanisms 11.3 Kinematics ... the wipers and whipping tendencies. For this wiper system, like most machines, understanding and analyzing the motion is neces-sary for proper operation. These types of movement and motion analyses...
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Electric Machines and Drives Part 1 pot

Electric Machines and Drives Part 1 pot

... 34-2 standard “Rotating electrical machines Part 2: Methods for determining losses and efficiency of rotating electrical machinery from tests”. The standard first introduced in 19 72 and updated ... awaited for December 2 010 . So, 1 –200 HP general purpose motors already covered by EPAct will change from NEMA MG -1, Table 12 -11 Energy Efficient (Annex 1) to Table 12 -12 NEMA Premium efficiencies ... A, Mahmoudi M.O and Boucherit M.SChapter 9Chapter 10 Chapter 11 Chapter 12 Premium Efficiency Motors 7 law applies only to motors manufactured after December 19 , 2 010 and motors in inventory...
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Electric Machines and Drives Part 2 docx

Electric Machines and Drives Part 2 docx

... 89.57.5 10 88.1 88.7 87 .2 11 15 90 .2 91.0 90 .2 11 15 89.4 898.0 88.7 15 20 90 .2 91.0 90 .2 15 20 90.3 90.6 89.7 18.5 25 91.0 92. 4 91.718.5 25 90.9 91 .2 90.4 22 30 91.0 92. 4 91.7 22 30 91.3 91.6 90.9 ... 89.515 20 88.7 88.7 87.7 15 20 89.5 90.5 90 .2 18.5 25 89.3 89.3 88.6 18.5 25 89.5 91.0 91.0 22 30 89.9 89.9 89 .2 22 30 90 .2 91.7 91.730 40 90.7 90.7 90 .2 30 40 91.5 92. 4 91.737 50 91 .2 91 .2 90.8 ... 92. 4 93.0 92. 155 75 92. 1 92. 1 91.9 55 75 93.0 93 .2 93.075 75 92. 1 92. 1 91.9 75 75 93.0 93 .2 93.090 125 92. 7 92. 7 92. 6 90 125 93.0 93.5 94.1110 150 93.0 93.0 92. 9 110 150 94.1 94.5 94.1132...
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Electric Machines and Drives part 6 ppt

Electric Machines and Drives part 6 ppt

... estimated speed and reference speed, (i.e.eω=ω−ωre f), a proportional integral compensation is proposed, as follows100 Electric Machines and Drives Electric Machines and Drives 90 ... jNωLrir− jNωLmis+ Lrddtir+ Lmddtis( 26) 102 Electric Machines and Drives where Rs, Rr, Ls and Lrare the stator/rotor resistances and inductances, Lmis the magnetizinginductance, ... Estimated and Encoder Measurement0 10 20 30 40 50 60 70−2−1012Load Torque (N.m)Time(s)(d) Estimated Load TorqueFig. 6. FLC control with 36 rad/s rotor speed reference108 Electric Machines and...
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Electric Machines and Drives part 7 ppt

Electric Machines and Drives part 7 ppt

... Industrial Electronics,IECON’09., pp. 1003 –1008.112 Electric Machines and Drives • Consequence of ( 27) and (28):Replace (29) in ( 27) :τM= fλTrMcdI2−αJJλrM= f αλTrMλrMSinceλTrMλrM= ... controller is proven.124 Electric Machines and Drives 0 10 20 30 40 50 60 70 00.511.522.5Current Id(A)Time(s)(a) IM Stator Current Ids0 10 20 30 40 50 60 70 −10123Current Iq(A)Time(s)(b) ... Lmpidsp− Lmcidsc)ωr128 Electric Machines and Drives where σ is an arbitrary angle.The model of the DFIG-IM in the stator frame of the two machines is given by (see (4) and (3)for in depth details):⎧⎪⎪⎪⎪⎪⎨⎪⎪⎪⎪⎪⎩⎡⎢⎣˙λrG˙λsMG˙λrM⎤⎥⎦+⎡⎣aI2−nG˙θGJbI20aI2−nG˙θGJeI2−cI2+...
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Electric Machines and Drives part 8 pdf

Electric Machines and Drives part 8 pdf

... the140 Electric Machines and Drives 83 .5 83 .55 83 .6 83 .65 83 .7 83 .75 83 .8 83 .85 83 .9 83 .95−20−1001020t(s)irGa & irGb(A) 83 .5 83 .55 83 .6 83 .65 83 .7 83 .75 83 .8 83 .85 83 .9 83 .95−50050t(s)irGa ... 193.76 193. 78 193 .8 193 .82 193 .84 193 .86 193 .88 193.9 193.92 193.94246(c) t(s)θG & θM (rad) 184 186 188 190 192 194 196 1 98 200 202 20400.20.4(d) t(s)τG(N.m) 184 186 188 190 192 ... desired torque. 83 .5 83 .55 83 .6 83 .65 83 .7−10−50510t(s)isGa & isGb(A) 83 .5 83 .55 83 .6 83 .65 83 .7−10−50510t(s)isGa & idsGa(A) 83 .5 83 .55 83 .6 83 .65 83 .7−10−50510t(s)isGb...
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Electric Machines and Drives part 9 potx

Electric Machines and Drives part 9 potx

... 27.67Ω 0.3312H 0.4 292 HTable 3. Motor parameter identified in simulation.154 Electric Machines and Drives Swarm Intelligence Based Controller for Electric Machines and Hybrid Electric Vehicles ... & Verghese, G. ( 198 9). Recursive speed and parameter estimationfor induction machines, Industry Applications Society Annual Meeting, 198 9., ConferenceRecord of the 198 9 IEEE, pp. 607 –611 ... population of random solutions. Each potential solution, called a particle. Each particle is given a random velocity and is flown through the problem space. The particles have memory and each particle...
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Electric Machines and Drives part 11 docx

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 ... optimization (PSO) used to achieve the best performance for the electric machines and electric drives. In addition, by analyzing and comparing the results, it is shown that control strategy based ... voltages and currents under unbalanced voltage supply with reduced DC-link capacitance without compensation. Electric Machines and Drives 194 Sixth International Symposium on Micro Machine and...
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machines and inventions - factoscope

machines and inventions - factoscope

... any information storage and retrieval system without the written permission of the publisher.ISBN-10: 1-5 990 5-2 3 5-0 ISBN-13: 97 8-1 -5 990 5-2 3 5-9 eBook: 97 8-1 -6 029 1-5 9 7-8 An invention is the creation ... CA 9261 8-2 767Website: www.sdlback.com MACHINES & INVENTIONS MACHINES & INVENTIONS TITLES IN THIS SERIESAnimal WorldEarthHuman Body Machines & Inventions PlantsUniverse MACHINES ... finally given to Bell.3 Machines and Inventions Humans have been inventing machines for thousands of years. Early machines include the wheel, plough, catapult, and writing tools. The invention...
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