Module Specification

The information contained in this module specification was correct at the time of publication but may be subject to change, either during the session because of unforeseen circumstances, or following review of the module at the end of the session. Queries about the module should be directed to the member of staff with responsibility for the module.
Title DRIVES
Code ELEC331
Coordinator Prof S Taylor
Electrical Engineering and Electronics
S.Taylor@liverpool.ac.uk
Year CATS Level Semester CATS Value
Session 2018-19 Level 6 FHEQ First Semester 7.5

Aims

  • To introduce students to a range of electrical machines (AC & DC) using the concepts of rotating magnetic fields, co-energy.
  • To facilitate the prediction of machine performance by the use of equivalent circuits

Pre-requisites before taking this module (other modules and/or general educational/academic requirements):

ELEC120; ELEC142; ELEC209 ELEctromagnetism & Electromechanics (ELEC120), Electrical Circuits & Systems (ELEC142)  

Co-requisite modules:

ELEC301 

Learning Outcomes


Syllabus

1

Introduction

Review of basic topologies, interaction of electric and magnetic circuits. Electromagnetic force in the form of B.i.l and change of co-energy.

2

DC Machines

Basic DC motor, machines with more than 2 poles. Series and shunt connections and characteristics, use of permanent magnet fields.  Development of the brushless DC machine, with the use of electronically switched supply to coils.

3

Rotating Magnet Fields

Basic concepts of space and time distribution; polyphase supplies and windings, and the generation of rotating fields. View of machines as interacting primary and secondary fields. Star & delta connections. Three phase power. 4

Synchronous Machines

Construction, round and salient pole fields; analysis of operation and phasor diagrams. Operating characteristics. Interaction of rotor and stator mmf; excitation and load angle. Synchronisation to supply system.

5

Transformers

Construction; magnetic circuits; required material characteristics. Ideal transformer, referred quantities. Practical devices; leakage and magnetising reactance''s. Operation and equivalent circuit; power flow.

6

Induction Motors

Description of 3 phase device; asynchronous nature; interaction of rotor and stator fields. Analysis based on transformer type equivalent circuit. Slip, power flow and torque. Applications and starting t echniques. Description of single phase machine.


Teaching and Learning Strategies

Lecture -

Other -


Teaching Schedule

  Lectures Seminars Tutorials Lab Practicals Fieldwork Placement Other TOTAL
Study Hours 24

        4

28
Timetable (if known)              
Private Study 47
TOTAL HOURS 75

Assessment

EXAM Duration Timing
(Semester)
% of
final
mark
Resit/resubmission
opportunity
Penalty for late
submission
Notes
Written Exam  2 hours  Semester 1 examination period  100  Resit opportunity only for MSc students in Aug/Sept. UG students - next scheduled sitting    Assessment 1 Notes (applying to all assessments) Formal exam  
CONTINUOUS Duration Timing
(Semester)
% of
final
mark
Resit/resubmission
opportunity
Penalty for late
submission
Notes
             

Reading List

Reading lists are managed at readinglists.liverpool.ac.uk. Click here to access the reading lists for this module.
Explanation of Reading List: