Course Details

Subject {L-T-P / C} : EE3011 : Electrical Machines { 3-0-0 / 3}

Subject Nature : Theory

Coordinator : Tanmoy Roy Choudhury

Syllabus

Module 1: Single Phase Transformer:
Review of EMF equation and equivalent circuit, phasor diagrams on no load and full load, per-unit representation of transformer parameters, voltage regulation, losses and efficiency, OC and SC test, all-day efficiency, parallel operation of transformers. (8 hours)

Module 2: Three-Phase Transformer:
Construction of various types, operating characteristics of star–star, star–delta, delta – star, delta – delta, open – delta connections, vector groups. (6 hours)

Module 3: D.C. Motor:
Review of EMF and torque equations, classification, losses and efficiency, Swinburne’s test & Hopkinson’s test, torque /speed characteristics, and speed control of shunt and series motors. (8 hours)

Module 4: Induction Machine:
Three phase induction motor: Construction and principle of operation, equivalent circuit and phasor diagram, torque-slip characteristics, no load and blocked rotor test, starting and speed control. Single phase induction motor: Principle of operation, torque-slip characteristics, starting methods. (8 hours)

Module 5: Synchronous Machines:
Constructional features, synchronous generators and motors, equivalent circuit and phasor diagram, power and torque characteristics, voltage regulation of non-salient pole alternators by synchronous impedance method, V-curve and inverted-V curve, starting of synchronous motors. (8 hours)

Course Objectives

Course Outcomes

At the end of the course, students will be able to:
1. Understand the operation and performance of single-phase transformers.
2. Interpret the operating characteristics for different connection types of three-phase transformers.
3. Analyze the performance characteristics of DC motors.
4. Know the construction, equivalent circuit, and phasor diagram of Induction Machines.
5. Perform testing and control operations for Inductions Machines.
6. Learn about a Synchronous Machine's construction, phasor diagram, and characteristic curves.

Essential Reading

Supplementary Reading