Electrical Machines and Equipment
Electrical Machines and Equipment
Electrical Machines and Equipment
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<strong>Electrical</strong> Technology Department<strong>Electrical</strong> <strong>Machines</strong> & <strong>Equipment</strong>sDetailed Theoretical ContentsHours Contents Related Tasks95- Electric traction: Types of electric traction Advantages <strong>and</strong> disadvantages of electric traction Traction force required on traction wheels Traction power Dynamics of train movements Types of transportation services Speed time curvesC2, C3, C5, C6,D9, E3, E4, E7, E8,J1, J2, J4, J666- Electric braking: Regenerative braking Dynamic braking Rheostat braking Reverse current braking (plugging)D9,E837-Choice of the driving motor: Factors considered in choosing the proper motor to drive aspecific load Selection of the suitable drive motor with the help of loadtorque curve <strong>and</strong> torque characteristics of the motorBasic skillsאאאאK –KאKKK–אאאKKאאKאK–References Electric Motors <strong>and</strong> Drives Fundamentals, A. Hughes,Heinemann Newnes, 1990. Electric Drives: Concepts <strong>and</strong> Applications, V.Subrahmanyam, McGraw-Hill, 1990. Utilization of Electric Power & Electric Traction, G. C.Garg, KHANNA PUBLISHERS DELHI, 1988.- 73 -
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