Electric Machines and Drives

... Controller for Electric Machines and Hybrid Electric Vehicles Applications Omar Hegazy, Amr Amin, and Joeri Van Mierlo 16 1 Chapter 10 Operation of Active Front-End Rectifier in Electric Drive ... 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...

Ngày tải lên: 21/06/2014, 01:20

... 90 110 1 32 160 20 0 26 0 300 335 375 Rating (hp) 1.5 5.5 7.5 10 15 20 25 30 40 50 60 75 75 125 150 175 21 5 27 0 350 400 450 500 80.7 82. 7 84 .2 85.9 87.1 88.7 89 .2 90.1 91 .2 91.9 92. 4 92. 7 93.3 93.7 ... 18.5 22 30 37 45 55 75 90 110 150 185 20 0 26 0 300 335 375 Rating (hp) 1.5 7.5 10 15 20 25 30 40 50 60 75 75 125 150 20 0 25 0 27 0 350 400 450 500 75.5 82. 5 84.0 85...

Ngày tải lên: 21/06/2014, 01:20

... parameter estimation in induction machines IFAC Symposium on Nonlinear Control System Design, Bordeaux, France, pp 77-82  96 Electric Machines and Drives Verghese, G C & Sanders, S R (1988) Observers ... and K = with e 3 sin cos 2 xqd and x stand for two-dimensional voltage ux and stator current vector, respectively on (q-d) and (-)reference frame The relations between mec...

Ngày tải lên: 21/06/2014, 01:20

... 110 Electric Machines and Drives Current Id (A) 1.5 0.5 −0.5 −1 10 20 30 40 50 60 70 50 60 70 T ime(s) (a) IM Stator Current Ids Current Iq (A) ... variables has the units of power 116 Electric Machines and Drives of the fully laminated cores is assumed to be infinite, and saturation, iron losses, end winding and slot effects are neglected Only ... σ +nGθG −n M θ M )) 11...

Ngày tải lên: 21/06/2014, 01:20

... isGb 141 142 Electric Machines and Drives irGa & irGb(A) 20 10 10 20 83 .5 83 .55 83 .6 83 .65 83 .7 83 .75 83 .8 83 .85 83 .9 83 .95 83 .75 83 .8 83 .85 83 .9 83 .95 83 .75 83 .8 83 .85 83 .9 83 .95 83 .9 83 .95 t(s) ... 193.76 193. 78 193 .8 193 .82 193 .84 193 .86 (c) 193 .88 193.9 t(s) G(N.m) 0.4 0.2 184 186 188 190 192 194 196 (d) 1 98 200 202 204 1 98 2...

Ngày tải lên: 21/06/2014, 01:20

... all electric parameters of the induction machines without the requirement of any previous test and derivative filters Simulation 158 Measured and simulated currents Electric Machines and Drives ... electric machines and electric drives in many aspects It is estimated that, electric machines consume more than 50% of the world electric energy generated Improving e...

Ngày tải lên: 21/06/2014, 01:20

... unbalance, Figures 10 and 11 Fig Phase voltages and currents under unbalanced voltage supply with reduced DC-link capacitance without compensation 202 Electric Machines and Drives iDC [A] 40 30 ... 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 tha...

Ngày tải lên: 21/06/2014, 01:20

... control and direct torque control (DTC) (Takahashi and Noguchi, 1986) are analyzed The main drawback of the two first strategies is that they use an encoder to obtain 218 Electric Machines and Drives ... motor drives with a single dc-link voltage to guarantee installation cost reduction and some individual motor controls In Wekhande et al (1999) and Jabbar et al (2004), Camp...

Ngày tải lên: 21/06/2014, 01:20

... 230 Fig Commanded and estimated torque (Nm) Fig 10 Commanded and estimated flux Fig 11 Stator currents in stator flux reference frame Electric Machines and Drives Space Vector PWM-DTC ... 246 Electric Machines and Drives It is clear, that as the other methods the determination of the tetrahedron T ( x , y , z ) allows the selection of the three vectors Vx , Vy and Vz ,...

Ngày tải lên: 21/06/2014, 01:20

... phase ‘a’ 256 Electric Machines and Drives ILb 40 Ibref 30 30 20 20 10 10 0 -10 -10 -20 -20 -30 -40 1.1 1.11 1.12 1.13 1 .14 1.15 1.16 1.17 1.18 1.19 1.2 -30 1.1 1.11 1.12 1.13 1 .14 1.15 1.16 Time ... of voltage and current control for distributed generation systems,” IEEE Trans Energy Convers., vol 21, no 2, pp 516–526, Jun 2006 258 Electric Machines and Drives [5] C A...

Ngày tải lên: 21/06/2014, 01:20

... field of modern electric drives The twelve chapters of the book written by renowned authors, both academics and practitioners, cover a large part of the field of electric machines and drives Various ... failure conditions, and modelling of electric or magnetic quantities in electric machines Several chapters give an insight into the problem of minimizing losses in electri...

Ngày tải lên: 10/04/2015, 17:30

... 2010 Edition Electric Motors & Drives Technical Manual Through the initiative of: International Copper Association – South East Asia Institute of Integrated Electrical Engineers ... standards (for example, Germany's VDE 0530 standard and Great Britain's BS 2613 Standard closely parallel the IEC 34-1 standard) The NEMA and IEC standards are quite similar, although they someti...

Ngày tải lên: 12/01/2014, 10:43

... distribution transformer Notice only one HV bushing and lightning THE IDEAL TRANSFORMER Few ideal versions of human constructions exist, and the transformer offers no exception An ideal transformer ... 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 MS...

Ngày tải lên: 25/01/2014, 13:20

... The power output is (10B-8) 394 DC MACHINES AND DRIVES Pout = TLω r = (3.53 × 10 −3 )(249) = 0.8 W (10B-9) The efficiency is Pout 100 Pin 0.88 = 100 = 41.1% 2.14 η= (10B -10) The low efficiency ... ∫ (10. 7-44) 412 DC MACHINES AND DRIVES va kivs ki+1vs ti+1 + ki+1T ti+1 + kiT ˆ Figure 10. 7-7 v a versus t for va shown in Figure 10. 7-5 and Figure 10. 7-6 ˆ Figure 10. 7...

Ngày tải lên: 16/02/2014, 18:48

... distribution transformer Notice only one HV bushing and lightning THE IDEAL TRANSFORMER Few ideal versions of human constructions exist, and the transformer offers no exception An ideal transformer ... basic understanding of modern machines and drives Power electronics are introduced, at the device and systems level, and electrical drives are discussed Equations are kept t...

Ngày tải lên: 27/07/2014, 23:33