Electrical Drives
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Electrical Drives Syllabus — Unit-wise Content
The official GTU curriculum for Electrical Drives (subject code 4360905) as prescribed for EC · Semester 6 divides the course into 4 units, covering 23 listed topics. The unit-wise breakdown below is read from the GTU syllabus document for this subject code, so you can check what the course actually covers before deciding which papers to attempt.
Download the official syllabus PDF (4360905)Unit 1 Basics of Electrical Drives
- 1.1. Electric drive, types, AC v/s DC drives, choice of electric drives.
- 1.2. Factor influencing choice of electrical drive.
- 1.3. Parts of electrical drive-Source, power modulator, electric motor and control unit.
- 1.4. Different types of industrial load and drives
- 1.5. Heating and cooling curve
- 1.6. Motor duty class, classification– continuous, short time, intermittent periodic with industry relevant example.
- 1.7. Motor power rating for continuous, short time and intermittent duty, equivalent current, torque andpower methods for fluctuating and intermittent loads.
- 1.8. Selection of electric drive for applications: agricultural pumps, steel mills, paper mills, rolling mills, spinning mills.
Unit 2 Dynamics of Electrical Drives
- 2.1. Steady state load Torque speed characteristics
- 2.2. Multi quadrant operation of drives
- 2.3. Types of Braking-(a) Plugging, (b) dynamic/rheostat braking and (c) regenerative braking.
- 2.4. Starters-Typical control circuits for shunt and series motors, three phase squirrel cage and slip ring induction motors.
- 2.5. Close loop control of drives a. Current limit control b. Close loop torque control c. Close loop speed control d. Close loop speed control of multi motor drive
Unit 3 DC Drives
- 3.1. Speed control of DC series and shunt motors – armature and field control.
- 3.2. Solid state speed control of single phase and 3 phase DC drives with the following i. Half wave converter ii. Semi converter iii. Full converter iv. Dual converter
- 3.3. Solid state speed control of separately excited shunt and series motor drives
- 3.4. Chopper control drive.
Unit 4 AC Drives - Three Phase Induction Motor Drive
- 4.1. Basic principle of 3 phase induction motor drive.
- 4.2. Solid state control of 3 phase induction motor: i. Stator voltage control of 3 phase AC voltage controller and soft start. ii. Speed control of Induction motor using Voltage source inverter. iii. Static rotor resistance control of induction motor. iv. Slip recovery scheme using static Kramer drive. v. Speed control of single-phase induction motor using DIAC and TRIAC device vi. Speed control of 3 phase induction motor by various connection method of Variable Frequency drive. a) VFD to Motor direct connection b) Speed Control of motor using PLC Unit– V 5a. Describe the working of 5.1 Working of brushless DC motor
- 5.2. Stepper motor drive and its application. Drives for Advanced Electrical Machines various advance electrical machines drives.
- 5.3. Servo Motor drive and its application.
- 5.4. Drive for switched reluctance motor solar powered pump drive.
- 5.5. DC drives with chopper control for electrical vehicle.
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