DI05000181 · Semester 5 · 5G scheme
Advance Electrical Machines and Drives
Notes and solutions following the Gujarat Technological University (GTU) syllabus for DI05000181. Independent material — not issued by the university.
Materials
Complete Book
The whole syllabus, unit by unit, written for the exam.
Complete Book
136 pages
Premium Preview · 13 pages
Syllabus units
Unit 1: Fundamentals of Electrical Drives
- An Introduction & block diagram of Electrical Drives, Advantages of Electrical Drives
- Parts of Electrical Drives, Fundamental Torque Equations
- Concept of Multi-Quadrant Operation
- Classification of load torque
- Selection of Motor Power Rating
- Electrical Drive Systems: Components Used for Obtaining Signals, Interlocking and Sequencing Operations, Protections
Unit 2: DC Motor Drives
- DC Motors Speed - torque & Torque - Armature current characteristics of Separately Excited Motor, Series Motor & Compound Motor
- Maximum torque and power limitation of DC Drives
- DC Series motor speed control using transformer and controlled rectifier
- Controlled Rectifier Fed DC Drives: Concept of Single Phase Half Controlled & Fully Controlled Rectifier, Three Phase Half Controlled and Full Controlled Rectifier
- DC Separately Excited Motor Control by Single Phase Fully Controlled Rectifier & Three Phase Fully Controlled Rectifier
- Multi-Quadrant Operation of DC Separately Excited Motor Drives: Single Fully Controlled Rectifier with Reversing Switch
- Supply Harmonics, Power Factor and Ripple in Motor Current.
- Chopper Control of Separately Excited DC Motors
- Closed Loop Control of DC Drive Above & Below Speed
- PMDC Motor: Principal, Construction, Working & Speed Control.
- PMDC Motor and DC Motor control using Microcontroller
Unit 3: Induction Motor Drives
- Introduction, torque speed curve of three phase induction motor, torque speed curve at variable supply voltage and constant frequency, constant voltage and variable frequency operation, Variable voltage, variable frequency operation with constant V/F
- Speed Control of Three Phase Induction Motor: Stator Voltage Control by AC Voltage Controllers, Variable Frequency Control, Voltage Source Inverter (VSI) Control, Variable Stator Current Operation
- Maximum Torque and Power Limitation of AC Drives
- VSI Induction Motor Drives: Braking and Multi-Quadrant Operation
- Closed Loop Speed Control of VSI Induction Motor Drives
- Effect of harmonics, Energy saving with variable frequency drives.
Unit 4: Synchronous Motor and Brushless DC Motor Drives
- Synchronous Motor: Speed - Torque Characteristics at Constant Frequency, Effect of Field Excitation on Power Factor
- Synchronous Motor Variable Speed Drives: Variable Frequency Control, Modes of Variable Frequency Control
- Self-Controlled Synchronous Motor Drive Employing Load Commutated Thyristor Inverter
- Construction & Working of Permanent Magnet Motor
- Permanent Magnet AC Motor Drives
- BLDC Motor: Types, Construction, Hall Sensors, Working, Commutation Sequence, Compare DC Motor & BLDC Motor
- Brushless DC Motor Drives, BLDC Motor Speed Control and Position Control Using Microcontroller
Unit 5: Stepper Motor and Switched Reluctance Motor Drives
- Stepper Motors: Important Terminologies, Variable Reluctance motor operation, Stepping Modes, Micro stepping, Permanent Magnet and Hybrid stepper motor operation and features, Important Features of Stepper Motors, Torque versus Stepping Rate Characteristics, Drive Circuits for Stepper Motors, Open loop and closed loop control of stepper motor
- Examples of step angle and resolution
- Stepper motor step controller using any microcontroller or U2004 Darlington Array
- Switched Reluctance Motors: construction, working, Effect of Rotor Position on Inductance, Voltage and Torque Equation, Control Requirements, Converter Circuits, Modes of Operation.
About this course
This subject provides essential knowledge of modern electrical drives and their control techniques, which are widely used in industrial and commercial applications. It enables students to understand the operation, control, and performance of various motor drives such as DC, induction, synchronous, and special machines like BLDC, stepper, and switched reluctance motors. The course focuses on speed control methods, braking techniques, multi-quadrant operation, and power electronic converters used in drive systems. This knowledge is crucial for selecting suitable drives, improving energy efficiency, and ensuring reliable operation in industries such as automation, electric vehicles, robotics, and manufacturing systems. The subject also prepares students for practical implementation and troubleshooting of drive systems in real-world applications.