Module title: Electrical Machines

SCQF level: 10:
SCQF credit value: 20.00
ECTS credit value: 10

Module code: ELE10102
Module leader: Francisco Vedreno Santos
School School of Engineering and the Built Environment
Subject area group: Electronics Electrical and Mathematics

Module code: ELE09100
Module title: Electrical Systems
Examples of equivalent learning: Electrical Systems equivalent to SCQF level 9

2018/9, Trimester 1, Face-to-Face, Edinburgh Napier University
Occurrence: 001
Primary mode of delivery: Face-to-Face
Location of delivery: MERCHISTON
Partner: Edinburgh Napier University
Member of staff responsible for delivering module: Francisco Vedreno Santos
Module Organiser:

Learning, Teaching and Assessment (LTA) Approach:
Learning & Teaching methods including their alignment to LOs
The teaching for all LOs (1-5) is primarily delivered through traditional lectures and tutorial or laboratory based exercises. Illustrative examples are used throughout to support the lecture material. Structured tutorial sheets for each LO are provided to the students.

Embedding of employability/PDP/Scholarship Skills
The module involves analysis of practical machines using mathematical models and a sound understanding of the application of electrical engineering principles. The selection aspect of the module relates to the determination of the applicability of equipment to suit different circumstances. Whilst it particularly involves the selection of rotating machines, the process involved can be applied to any device, this gives students a good insight into the sales, tendering and contract processes used in commerce and industry worldwide.

Research / teaching linkages
Members of the teaching team regularly attend seminars and conferences that provide up-to-date information on the subject area.

Supporting equality and diversity
All lecture, tutorial and assessment material are available in a VLE to permit access to a diverse student group. Academic help and support is provided on a weekly basis in the timetabled classes. Engineering Plus sessions, provided by the school, are available as a drop-in support facility for all students.

Electrical machines are universal devices that are used throughout the world. Subtle differences in performance due to regional supply variations are described. In addition, the applicability of devices to operate in various locations and terrrains are described to illustrate the differences between machines driving the same load but in entirely different environments.

Formative Assessment:
Class tutorials and laboratories provide the opportunity for formative feedback and assessment.

Summative Assessment:
Summative assessment will be by examination (LOs 1 to 5) and coursework (LO 2). The coursework serves both as formative and summative assessment.

Student Activity (Notional Equivalent Study Hours (NESH))
Mode of activityLearning & Teaching ActivityNESH (Study Hours)
Face To Face Lecture 24
Face To Face Tutorial 12
Face To Face Practical classes and workshops 12
Independent Learning Guided independent study 150
Face To Face Centrally Time Tabled Examination 2
Total Study Hours200
Expected Total Study Hours for Module200

Type of Assessment Weighting % LOs covered Week due Length in Hours/Words
Practical Skills Assessment 40 2 4 HOURS= 0, WORDS= 0
Centrally Time Tabled Examination 60 1-5 14/15 HOURS= 2, WORDS= 0
Component 1 subtotal: 40
Component 2 subtotal: 60
Module subtotal: 100

Description of module content:

Three-phase Transformers: construction, connections, parallel-operation.
Three-phase Induction Motors: equivalent circuit, testing and performance calculations, circle diagram..
Single-phase Induction Motors: equivalent circuit and performance calculations.
Three-phase Synchronous Machines: equivalent circuit, testing and performance calculations, operating charts.
Losses and temperature-rise: mechanical losses, electrical losses, efficiency curve, temperature rise, life expectancy and hot-spot measurement.
Starting, Braking & Selection of electrical machines: starting methods, braking methods, loads, cooling and mechanical protection properties, environmental considerations and electrical protection.

Learning Outcomes for module:

On completion of this module you will be able to:
LO1: demonstrate an advanced understanding of the construction, operation, cooling and protection of
power transformers;
LO2: analyse the performance and operation of induction motors, including double squirrel-cage motors;
LO3: analyse the performance and operation of three-phase synchronous machines;
LO4: explain the losses and temperature-rise in electrical machines;
LO5: demonstrate a critical understanding of the starting, braking and selection of electrical machines.

Indicative References and Reading List - URL:
Electrical Machines