Module Catalogues, Xi'an Jiaotong-Liverpool University

Module Code: EEE108
Module Title: Electromagnetism and Electromechanics
Module Level: Level 1
Module Credits: 5.00
Semester: SEM2
Originating Department: Electrical and Electronic Engineering
Pre-requisites: MTH008ANDMTH101ANDPHY002ANDEEE103

 Aims To provide the student with a fundamental knowledge of electromagnetics and the principles and construction of DC and AC machines, transformers and linear actuators.
 Learning outcomes A. understand the basic principles of charge, electric field strength, Gauss’s Law and its engineering applications;B. understand the basic principles of currents and the engineering applications of magnetic effects of currents, the fundamentals of current flow into inductors and capacitors, why certain materials are used in electromechanical devices;C. understand the basic principles of how the physical laws of electromagnetism and mechanics apply to practical motors, transformers and actuators;D. understand the basic principles of the behaviour and factors relating to the performance of common electrical devices, such as series and shunt DC motors, alternators, solenoids and transformers;E. determine the magnetic effects of electrical currents in practical circuits, analyse a simple electromechanical system in order to predict its characteristics;F. prepare an initial design for an electromechanical device from a specification;G. have an ability to use specific instrumentation to perform simple electro-mechanical tests on an electrical machine to evaluate its performance;H. demonstrate independent learning, and problem solving and design skills.
 Method of teaching and learning This module will be delivered through a combination of formal lectures, tutorials and supervised laboratory sessions.
 Syllabus 1. Introduction to Simple Electrostatics Review vector and integral Simple Electrostatics including quantities and units. 2. Gauss’s Law Closed surface flux lines application to cylinders/cables, relationship to Coulombs Concept of capacitance, stored energy, charging of a capacitor through a resistor. 3. Electric current Drift of electrons, current in solids, Ohm’s Law and its origins. 4. Ampere’s Law Magnetic fluxes/fields around straight wires with current. Coils, B and H, BH loops. Inductance and LR transients, magnetic circuits and analogy with electrical circuits. 5. Application of Ampere’s Law 6. Electromagnetic induction Concept of induction, self and mutual inductances and their calculations, the B-H curve and measurement of relative permeability, energy stored in a magnetic field. 7. Transformer AC operation of an iron core and transformer action. Losses. Transformer equivalent circuit. Open and short circuit transformer tests. 8. Linear actuators Various constructions of linear actuators, principle of energy conversion. 9. DC Machinery Fundamentals Basic concept of electrical machines fundamentals, linear DC machines. 10. AC machines Single phase and multi-phase alternators, the production of a rotating magnetic field, synchronous speed, voltage generation, torque in non-salient pole machines,3-phase induction motors, slip, equivalent circuit ,speed control, synchronous generators and motors. Application. 11. DC Rotating Machines EMF and back EMF, torque production. Methods of excitation and commutation - series, shunt and compound wound machines, magnetic circuits, reversibility principle of electrical machines, power relation for generator and motor, Typical machine characteristics, speed control, typical applications.
Delivery Hours
 Lectures Seminars Tutorials Lab/Prcaticals Fieldwork / Placement Other(Private study) Total Hours/Semester 38 10 12 90 150

## Assessment

 Sequence Method % of Final Mark 1 Paper Report 10.00 2 Paper Report 10.00 3 Take-Home Open Book Exam (3 Hours) 80.00
 Module Catalogue generated from SITS CUT-OFF: 6/5/2020 9:44:01 PM