Catalogue of Modules, University of Nottingham

H64ADP Advanced AC Drives with Project
(Last Updated:03 May 2017)

Year  17/18

Total Credits: 20

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 module addresses the control of AC drives and consists of a lecture component (10 credits) and a design and assessment project (10 credits)

The lecture component covers vector controlled induction motor drives and permanent magnet motor drives. 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.

Both AC and Brushless DC permanent magnet motor drives are introduced. The vector control concepts learned for induction machines 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.

The project component is a design and simulation exercise using MATLAB/Simulink. The student is required to design an indirect vector controlled induction motor drive, implement the design in Simulink, and undertake evaluative tests covering current and speed loop performance, including field weakening for high speed. The exercise covers investigating the effects of parameter variation and designing engineered solutions to reducing the sensitivity.

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 are15-20 hours of timetabled lectures and demonstrations. There is one introductory tutorial to introduce students to the project part of the module. Further project seminars assisting project work are organised according to student demand. Breakdown of hours: Tutor led - 25 hours; student directed - 90 hours; assessment/revision - 30 hours.

Method of Assessment: 

Assessment TypeWeightRequirements
Exam 1 50  
Coursework 1 50  

Dr M Galea

Education Aims:  

  • To 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
  • To impart design skills through the design of a vector controlled drive using manufacturer’s machine data and defined design specifications
  • To develop critical assessment skills through design evaluation

    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
  • Design a vector control drive including relevant algorithms
  • Evaluate the performance of the designed system using a CAE/D tool or a laboratory rig

    Offering School:  Department of Electrical & Electronic Engineering

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