Module Catalogues, Xi'an Jiaotong-Liverpool University   
 
Module Code: MFE108TC
Module Title: Electromechanical Systems
Module Level: Level 1
Module Credits: 2.50
Academic Year: 2020/21
Semester: SEM2
Originating Department: School of Intelligent Manufacturing Ecosystem
Pre-requisites: N/A
   
Aims
Upon successful completion of this module students will understand the basic elements of Electromechanics. Students will be able to demonstrate the importance of these core topics in engineering applications and complete simple designs of their own.
Learning outcomes 
A Understand the fundamentals of current flow into inductors and capacitors and the physical laws of electromagnetism and mechanics that can apply to practical motors, transformers and actuators.

B Understand the properties of materials best suited for use in electro-mechanical devices and the behavior of common electrical devices, such as series and shunt dc motors, alternators, solenoids and transformers.

C Determine the magnetic effects of electrical currents in practical circuits.

D Analyse a simple electromechanical system in order to predict its characteristics.

E Be able to use specific instrumentation to perform simple electro-mechanical tests on an electrical machine to evaluate its performance.

F Acquire independent learning, problem solving and design skills
Method of teaching and learning 
This module will be delivered through a combination of formal lectures and supervised laboratory sessions. Two coursework will be assigned in Week5 and 10, respectively.
Syllabus 
1 Magnetic Circuits and Electromagnetic Induction

Magnetic circuits (with and without air gaps) and comparison with electrical circuits. Introduction to electromagnetic induction, drives and actuators.

Faraday's Law and induced voltage

Inductors and applications. Case study and design exercise.

Energy stored in a magnetic field.

2 Actuators and Transformers

Linear actuators from first principles.

Case study and introduction to design exercise

Moving coil transducers.

Ideal transformers, step up and step down transformers, turns ratio.

Wireless charging.

Practical transformers; sources of loss. Modeling practical transformers and transformer tests.

3 Motors and Generators

DC motors; principle of operation, torque variation

DC generators; principle of operation, induced electromotive force.

AC generators; principle of operation

DC machines; different connection types, equivalent circuits (armature and field windings). Calculation of torque.

4 Alternators

Different configurations; singe, two and three phase.

Different numbers of poles on rotor and impact on output frequency.

Case study of car alternator.

5 Further DC and AC Motors

Shunt, series and compound connections.

Calculation of motor speed.

Operational characteristics of different connection types.

Motor efficiency and design considerations.

Induction (squirrel cage) motors. Slip and synchronous speed. Advantages, disadvantages and applications.
Delivery Hours  
Lectures Seminars Tutorials Lab/Prcaticals Fieldwork / Placement Other(Private study) Total
Hours/Semester 14      8    53  75 

Assessment

Sequence Method % of Final Mark
1 Final Exam 50.00
2 Coursework 1 25.00
3 Group Project 25.00

Module Catalogue generated from SITS CUT-OFF: 8/22/2019 5:47:34 PM