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ELECTRICAL DRIVES & CONTROL

EE A Course Material on ELECTRICAL DRIVES & CONTROL SEMESTER IIELECTRICAL DRIVES AND CONTROLL1 PRINTING TECHNOLOGY-SDE MODE SEMESTER IIELECTRICAL DRIVES AND CONTROLL2 PRINTING TECHNOLOGY-SDE MODE 3 , ,AP/EEE 2015-16 EE6361 ELECTRICAL DRIVES AND CONTROL Unit-I Introduction Basic elements-types of electric DRIVES -factors influencing electric 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 Unit- II Drive motor characteristics Mechanical characteristics- speed - torque characteristics of various

4.2 EXPRESSION FOR SPEED FOR A DC MOTOR 62 4.3 Applications of DC Drives 62 4.4 Advantages of DC Drives 62 4.5 Conventional Methods of Speed Control 63 4.5.1 Speed control of DC Shunt Motors 63 4.5.2 Speed control of DC Series Motors 64 4.5.3 Ward Leonard Control System 65 4.6 Solid state Speed Control of DC Motor 66

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