Catalogue of Modules, University of Nottingham

H64AMD Advanced AC Drives
(Last Updated:03 May 2017)

Year  17/18

Total Credits: 10

Level: Level 4

Target Students:  Electrical MSc and final year MEng students  Available to JYA/Erasmus students.

Taught Semesters:

Spring Assessed by end of Spring Semester 

Prerequisites: Knowledge of basic control design methods (such as that provided by H63CSD) and knowledge of drive systems (such as that provided by H63EDR).

Corequisites:  None.

Summary of Content:  

This covers the control of AC drives. The first part of the module covers vector controlled induction motor drives and the second part covers permanent magnet motor drives. A review of induction machine operation and basic open-loop induction motor drives is given. Vector control is covered in depth covering the concept of space vectors, dq representation of 3-phase machines, dynamic equation structure and the concepts of direct and indirect flux orientation. Implementation of Indirect Vector Control, including current flux and speed control is covered in some detail and includes the effect of incorrect parameters.

The second part introduces both AC and Brushless DC permanent magnet motor drives. The vector control concepts learned in the first part of the module are applied to AC PM machines. The concept of salient and non-salient AC PM machines are covered leading to the vector control using maximum torque per amp control strategies. Finally the field weakening control of both non-salient and salient PM machines are considered.

Method and Frequency of Class:

ActivityNumber Of WeeksNumber of sessionsDuration of a session
Lecture 6 weeks1 per week4 hours

Activities may take place every teaching week of the Semester or only in specified weeks. It is usually specified above if an activity only takes place in some weeks of a Semester

Further Activity Details:
Teaching takes place over a 5-week period in which there are a total of 20 hours of timetabled lectures. Breakdown of hours: Tutor led - 20 hours max; student directed - 40 hours; assessment/revision - 15 hours.

Method of Assessment: 

Assessment TypeWeightRequirements
Exam 1 100  

Dr A Walker

Education Aims:  

  • Provide a good understanding of the concepts of field orientation and vector control for induction and non-salient and salient PM AC machines.
  • To provide information and guidance on the design of control structures and their implementations including parameter dependencies and field weakening

    Learning Outcomes:  

    At the end of the module, students will be able to:

  • Explain the physical and operational principles of those AC electrical machines commonly used for high performance vector drives
  • Explain the principles of field orientation for the vector control of AC machines drives
  • Apply the principles of field orientation in order to design vector controllers for practical AC machine drives
  • Analyse and evaluate AC drive performance characteristics based on parametric data, including manufacturers’ data

    Offering School:  Department of Electrical & Electronic Engineering

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