Course Details

Subject {L-T-P / C} : EE3200 : Electrical Drives { 3-0-0 / 3}

Subject Nature : Theory

Coordinator : Prof. Kanungo Barada Mohanty

Syllabus

Factors affecting selection of drives, speed-torque characteristics of motors and loads, condition of steady-state stability, transient stability: equal area criterion, dynamics of motor load combination, DC shunt motor and series motor braking methods and speed-torque characteristics in four quadrants, Induction motor: steady-state performance analysis, braking methods, four quadrant speed-torque characteristics, dc and ac dynamic braking, Methods of starting, energy relations during starting and braking, Transients in dc and ac drives Motor and converter performance parameters, 1-phase full- and semi- converter fed dc shunt and dc series motor, Mathematical analysis of 1-phase converter fed dc motors, 1-phase Dual converter: waveforms, operations with and without circulating current, 3-phase full converter, semi converter and dual converter fed dc drives, Power factor considerations of semi- and full converters, Power factor improvement of phase controlled converters, Sequence control of converters, Chopper controlled dc drives Static speed control of induction motor: stator voltage control, Static control of rotor resistance, Static slip power recovery scheme, VSI and cyclo-converter fed drives, V/f control, constant torque and constant power operations, closed loop V/f control, CSI fed drives Induction motor behavior with non-sinusoidal supply and unbalanced supply, PWM inverters and reduction of harmonics, Synchronous motor drives: true and self synchronous modes, hunting Brushless dc motor drive, Reluctance motor, SRM, stepper motors Illumination, electrical heating, furnaces, arc welding, industrial application of motors in steel mills, textile mills, cement mill and paper mills Electric traction services, nature of traction load, main line and sub-urban train configuration, traction mechanics, traction drives, braking, power factor and harmonics, traction motor.

Course Objectives

Course Outcomes

CO1: Ability to select appropriate drive with correct rating of motor <br />CO2: Skill in developing flux weakening operation of electric drives. <br />CO3: To design one, two and four quadrant drives. <br />CO4: Ability to design closed loop control schemes with modern control theory applications

Essential Reading

Supplementary Reading