machines and inventions - factoscope

... basic concepts and build the equations and circuits corresponding first to an ideal transformer and then to typical transformers in use. We’ll introduce and work with the 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...

Ngày tải lên: 25/01/2014, 13:20

... /)] () − +± ω ω (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...

Ngày tải lên: 16/02/2014, 18:48

Ngày tải lên: 16/02/2014, 19:02

... 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 Linguistics Reading Level Assessment Using Support Vector Machines and Statistical Language Models Sarah E. Schwarm Dept. of Computer Sci...

Ngày tải lên: 20/02/2014, 15:20

Ngày tải lên: 22/02/2014, 08:20

... set encoding: ASCII *** START OF THIS PROJECT GUTENBERG EBOOK EDISON, HIS LIFE AND INVENTIONS *** Produced by Charles Keller and David Widger EDISON HIS LIFE AND INVENTIONS By Frank Lewis Dyer General ... and especially of the loan of many interesting and rare photographs from her private collection. EDISON HIS LIFE AND INVENTIONS Edison, His Life and...

Ngày tải lên: 16/03/2014, 00:20

... to Mechanisms and Kinematics 27 FIGURE 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 ... Mobility Having four links and four pin joints, n = 4, j p = 4 pins, j h = 0 CONTENTS 1 Introduction to Mechanisms and Kinematics 1 Objectives 1 1.1 Introduction 1 1.2 Machines...

Ngày tải lên: 08/04/2014, 11:36

... 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 N...

Ngày tải lên: 21/06/2014, 01:20

... 89.5 7.5 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 91.7 18.5 25 90.9 91 .2 90.4 22 30 91.0 92. 4 91.7 22 30 91.3 91.6 90.9 ... 89.5 15 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 91.7 30 40 90.7 90.7 90 .2 3...

Ngày tải lên: 21/06/2014, 01:20

... estimated speed and reference speed, (i.e. e ω =  ω −ω re f ), a proportional integral compensation is proposed, as follows 100 Electric Machines and Drives Electric Machines and Drives 90 ... jNωL r i r − jNωL m i s + L r d dt i r + 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 inducta...

Ngày tải lên: 21/06/2014, 01:20

... Industrial Electronics,IECON ’09., pp. 1003 –1008. 112 Electric Machines and Drives • Consequence of ( 27) and (28): Replace (29) in ( 27) : τ M = f  λ T rM  c d I 2 −αJ  J  λ rM = f α  λ T rM  λ rM Since  λ T rM  λ rM = ... controller is proven. 124 Electric Machines and Drives 0 10 20 30 40 50 60 70 0 0.5 1 1.5 2 2.5 Current I d (A) Time(s) (a) IM Stator Current...

Ngày tải lên: 21/06/2014, 01:20

... the 140 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 −10 0 10 20 t(s) i rGa & i rGb (A) 83 .5 83 .55 83 .6 83 .65 83 .7 83 .75 83 .8 83 .85 83 .9 83 .95 −50 0 50 t(s) i rGa ... 193.76 193. 78 193 .8 193 .82 193 .84 193 .86 193 .88 193.9 193.92 193.94 2 4 6 (c) t(s) θ G & θ M (rad) 184 186 188 190 1...

Ngày tải lên: 21/06/2014, 01:20

... 27.67Ω 0.3312H 0.4 292 H Table 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 estimation for induction machines, Industry Applications Society Annual Meeting, 198 9., Conference Record of the 198...

Ngày tải lên: 21/06/2014, 01:20

... 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...

Ngày tải lên: 21/06/2014, 01:20

... 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 A n invention is the creation ... CA 9261 8-2 767 Website: www.sdlback.com MACHINES & INVENTIONS MACHINES & INVENTIONS TITLES IN THIS SERIES Animal World Earth Human...

Ngày tải lên: 27/10/2014, 17:24