EEEN30090 Electrical Machines

Academic Year 2024/2025

1- Electrical Calculations 🔌:
Phasor analysis of single-phase and three-phase circuits. Delta (Δ) and star (Y) connections. Phase and line voltages. Active, reactive, apparent Power. Power factor. RMS value.

2- Fundamental magnetic circuits 🧲:
Magnetic characteristics of iron. B/H curves. Hysteresis, and eddy currents. Magnetic circuits and electrical equivalent circuits. Sinusoidal excitation (Faraday’s law). Energy Conversion Process.

3- Induction machines 🚎:
Construction. Fundamental analysis of distributed windings. Flux density. Flux, flux linkage, and inductance. Rotating magnetic fields. Development of equivalent circuit model. Torque-speed characteristic. Efficiency. Effects of rotor resistance. Speed control. Starting of induction motors. Induction generator. Applications in Wind energy systems. Voltage Source Inverter.

4- Synchronous machines 🚅:
Construction. Development of the equivalent circuit and use of same in analyzing of the machine connected to an infinite bus. Steady-state characteristics, and operational performance. Speed control. Applications in Wind energy systems. Voltage Source Inverter.

5- Special machines ⚙:
Brushless DC (BLDC) Motors (Construction and operating principle, stator, rotor, hall sensor, Voltage Source Inverter). Switched Reluctance Motors (SRM). Single-Phase Induction Motors. Servomotors. Stepper Motors. Applications in electric vehicle traction motors.

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Curricular information is subject to change

Learning Outcomes:

Develop mathematical models for magnetic circuits where iron includes all or part of the circuit;
Analyse and synthesise magnetic circuits;
Develop mathematical models for the fundamental electrical machines including transformers, induction machines and synchronous machines;
Analyse the operation of the basic machine types electrically coupled to various circuits and systems and mechanically coupled to loads or prime movers.

Student Effort Hours: 
Student Effort Type Hours
Lectures

30
Laboratories

9
Specified Learning Activities

10
Autonomous Student Learning

70
Total

119
Approaches to Teaching and Learning:
task-based learning; lectures; lab work; case studies 
Requirements, Exclusions and Recommendations
Learning Recommendations:

Knowledge of Electrical and Electronic Circuits is strongly recommended.


Module Requisites and Incompatibles
:
-

Additional Information:
Pre-requisites: one of the listed modules.


 
Assessment Strategy  
Description Timing Open Book Exam Component Scale Must Pass Component % of Final Grade
Quizzes/Short Exercises: Class Test: Questions cover all material discussed to week 2. n/a Alternative linear conversion grade scale 40% No

5
Quizzes/Short Exercises: Class Test: Questions cover all material discussed to week 5. n/a Alternative linear conversion grade scale 40% No

5
Report(s): Lab Report: Report 3 on lab experiments n/a Alternative linear conversion grade scale 40% No

10
Quizzes/Short Exercises: Class Test: Questions cover all material discussed to week 11. n/a Alternative linear conversion grade scale 40% No

5
Exam (In-person): Final exam n/a Alternative linear conversion grade scale 40% No

50
Report(s): Lab Report: Report 1 on lab experiments n/a Alternative linear conversion grade scale 40% No

10
Report(s): Lab Report: Report 2 on lab experiments n/a Alternative linear conversion grade scale 40% No

10
Quizzes/Short Exercises: Class Test: Questions cover all material discussed to week 8. n/a Alternative linear conversion grade scale 40% No

5

Carry forward of passed components
Yes
 
Resit In Terminal Exam
Spring No
Please see Student Jargon Buster for more information about remediation types and timing. 
Feedback Strategy/Strategies

• Feedback individually to students, post-assessment
• Group/class feedback, post-assessment

How will my Feedback be Delivered?

Not yet recorded.

Name Role
Dr Nan Zhao Lecturer / Co-Lecturer