ELE – 802 ELECTRIC DRIVES & CONTROL

Electric drives and its control: speed torque characteristics of D.C. motors ( shunt, series and compound type) , induction motor and synchronous motor under normal operating and braking conditions, Speed control of electric motors, special forms of electric drive. Motor power rating selection and load diagrams, Load equalization.

Automatic Electric drive control: Automatic electrics drive control with rotating amplifiers, magnetic amplifier and electronic devices.

Control of electric motor by thyristor: Starting and speed control and braking of D.C. motors, induction motor and synchronous motor by S.C.R.

Application of electric drive in steel: cement and paper mills, Selection of motor for given services.

Electric Traction: System of electric traction and their comparison, systems used in India.

Mechanics of train movement :Speed time and distance time curves, tractive efforts for acceleration and propulsion, effective weight, train resistance, adhesive weight and coefficient driving axles, specific energy output and consumption factors effecting energy consumptions.

Traction motors: Review of different types of D.C. and A.C. traction motors and their suitability, Control of D.C. traction motors. Series, parallel control, braking. Multiple unit control, automatic and manual control, Locomotive control system, metadyne and solid state control. Control of A.C. , series and induction motor, Regenerative braking in locomotives using D.C. series motors system.

Feeding and distribution stem for tramways and railways: Track boosters, Distribution system for single phase A.C. electrification, Current collectors, Substation equipments and arrangements.

TEXTBOOK:

1. Fundamentals of Electrical Drives by G.K. Dubey

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