ELECTRICAL DRIVES AND CONTROL |
INTRODUCTION |
Basic Elements – Types of Electric Drives – Factors influencing the choice of electrical drives – Heating
and cooling curves – Loading conditions and classes of duty – Selection of power rating for drive motors
with regard to thermal overloading and Load variation factors. |
DRIVE MOTOR CHARACTERISTICS |
Mechanical characteristics – Speed-Torque characteristics of various types of load and drive motors –
Braking of Electrical motors – DC motors: Shunt, series and compound - Single phase and three phase
induction motors. |
STARTING METHODS |
Types of D.C Motor starters – Typical control circuits for shunt and series motors – Three phase squirrel
cage and slip ring induction motors. |
CONVENTIONAL AND SOLID STATE SPEED CONTROL OF D.C. DRIVES |
Speed control of DC series and shunt motors – Armature and field control, Ward-Leonard control system -
Using controlled rectifiers and DC choppers –Applications. |
CONVENTIONAL AND SOLID STATE SPEED CONTROL OF A.C. DRIVES |
Speed control of three phase induction motor – Voltage control, voltage / frequency control, slip power
recovery scheme – Using inverters and AC voltage regulators – Applications. |
Text Books |
1. Vedam Subrahmaniam, “Electric Drives (concepts and applications)”, Tata McGraw-Hill, 2001
2. Nagrath.I.J. & Kothari.D.P, “Electrical Machines”, Tata McGraw-Hill, 1998 |
Reference Books |
1. Pillai.S.K “A first course on Electric drives”, Wiley Eastern Limited, 1998
2. M.D.Singh, K.B.Khanchandani, “Power Electronics”, Tata McGraw-Hill, 1998
3. H.Partab, “Art and Science and Utilisation of electrical energy”, Dhanpat Rai and Sons,
1994. |