... class. Slip-ring motors, commutator motorsand brake motors can all be made inflameproof versions.No external parts may cause sparks.The motors must have both an internal and an external earthing ... sets the standards. Or at least many countries basetheir standards very closely on the IEC standards (for example,Germany's VDE 0530 standard and Great Britain's BS 2613 Standardclosely ... though, the standards can be grouped into two majorcategories: NEMA and IEC (and its derivatives).In North America, the National Electric Manufacturers Association(NEMA) sets motor standards,...
... Institute of Electrical and Electronics Engineers (IEEE) “Standard Test Procedure for Polyphase Induction Motorsand Generators” IEEE 112-B and in its Canadian CSA 390 adaptation. The standard first ... 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 ChomatContentsVISwarm...
... Canada with the adoption of Standard CAN/CSA- Electric Machines andDrives 14 Fig. 7. Stator Premium motors Fig. 8. Rotor Premium motorsElectric Machines andDrives 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 andDrives 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...
... 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 andDrives 90 ... jNωLmis+ Lrddtir+ Lmddtis(26)102 Electric Machines and Drives where Rs, Rr, Ls and Lrare the stator/rotor resistances and inductances, Lmis the magnetizinginductance, ... θ0sin θ0cos θ0 and K=23⎡⎢⎣1−12−120−√32−√32⎤⎥⎦.xqd and xαβstand for two-dimensional voltage flux and stator current vector, respectively on(q-d) and ( α-β)reference...
... desired torque, and will be taken as a simple PI controller. The reader isreferred to (1) for motivation and additional details on this control configuration.122 Electric Machines and Drives 0 10 ... variables1prime mover torque and speed, (τLG, ωG) ,and rotor and stator voltages and currents,(vrG, irG), (vsG, isG), respectively. The IM, on the otherhand, is a two–port system with ... infinite, and saturation, iron losses, end winding and slot effects are neglected. Only linear magnetic materials are considered, and it is furtherassumed that all parameters are constant and known....
... voltages vrGa and vrGb, the IM rotor speed ωmM and itsestimationˆωmM, the estimated IM load torqueˆτML, and the estimated IM speed, given by132 Electric Machines and Drives 52.6 52.65 ... à lacommande des systèmes électromécaniques,” PhD thesis, Université de Paris XI, France,2004.[5] W. Leonhard, “Control of electrical drives, ” Spring-Verlag, 1985.[6] M.S. Vicatos and J.A. ... 2002.[13] A. J. van der Schaft, “L2–Gain and Passivity Techniques in Nonlinear Control,”Springer–Verlag, Berlin, 1999.144 Electric Machines and Drives equation¯σq= LsqLrq− L2mq,¯σd=...
... in electric drives. The excellent characteristics of PSO may be successfully used to optimize the performance of electric machines andelectricdrives in many aspects. It is estimated that, electric ... 2009. IECON ’09. 35th AnnualConference of IEEE, pp. 1003 –1008.160 Electric Machines and Drives Electric Machines andDrives 168 Areall possible operatingconditions optimizedvarying ... 3. Motor parameter identified in simulation.154 Electric Machines and Drives Swarm Intelligence Based Controller for Electric Machines and Hybrid Electric Vehicles Applications 163 rMLlMLmqLlr+-(1/k)ωrλdr+-VqsrriqsiqrRqf...
... understanding ofmodern machines and drives. Power electronics are introduced, at the device and systems level, and electrical drives are discussed.Equations are kept to a minimum, and in the examples only ... 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 cover ... dash-dot.PrefaceThe purpose of these notes is be used to introduce Electrical Engineering students to ElectricalMachines, Power Electronics and Electrical Drives. They are primarily to serve our students atMSU:...
... attached to the concrete, they must be unpainted and free from pollution and dust.Manual for Induction Motorsand Generators 24 - Installation and Alignment3BFP 000 050 R0101 REV CFigure 3-2 ... each work site and safety instructions included in this manual and separate safety instructions delivered with the machine.Manual for Induction Motorsand Generators 14 - Transport and Unpacking3BFP ... 21Manual for Induction Motorsand Generators 12 - Transport and Unpacking3BFP 000 050 R0101 REV C2.4 Checks upon arrival and unpacking2.4.1 Check upon arrivalThe machine and the package must...
... Operating asynchronous motors 3.6 Electric motor comparison3. Motorsand loads50A Fig. 25 Ward Leonard arrangement A Fig.26Comparison of electric motors Summary3. Motorsand loads37123456789101112M3.1 ... phase asynchronous motors 383.2 Single-phase motors 423.3 Synchronous motors 433.4 Direct current motors commonly named DC motors 453.5 Operating asynchronous motors 473.6 Electric motor comparison ... Other types of synchronous motors To conclude this overview of industrial motors, we can mention linear motors, synchronised asynchronous motorsand stepper motors. v Linear motors Their structure...
... the output of this comparator ( L ) is high, S 1 and S 2 are closed and S 3 and S 4 are open; when L is low, S 3 and S 4 are closed and S 1 and S 2 are open. The action of this type of current ... low and S 1 and S 2 are opened and S 3 and S 4 are close. The armature current decreases until iiaa=−*ε, at which time the comparator output becomes high; S 1 and S 2 are closed and ... to the comparator with hysteresis, is positive and greater than ε . The output of the comparator is high, and S 1 and S 2 are closed and S 3 and S 4 are open. The armature current increases...