Control of Electric Drives

Recommended Prerequisites

Introduction to Electric Drives, Electric Machines I

Teaching Methods

The teaching methodology consists in a small number of seminaries, taught by the teacher for the introduction of the fundamental topics, complemented with a bibliographic survey by the students to deepen their knowledge about these subjects, being supported in this work by a set of tutorial classes.

Learning Outcomes

It is intended with this curricular unit to study the aspects related to the design, performance and implementation of electric drives based on different types of electric machines, using the most recent control strategies, namely those based on Field Oriented Control (FOC) and Direct Torque Control (DTC).

The main results of the learning process include the knowledge of the state-of-the-art of electric drives and allow students to carry out research in this field of knowledge.

Work Placement(s)

No

Syllabus

Electric drives: typical configuration; motors and power electronic converters for drives. Typical structure of AC drives based on induction motors, permanent magnet synchronous motors and switched reluctance motors. Open-loop and closed-loop control of an electric drive. Scalar versus vector control: V/f control, Field Oriented Control (FOC) and Direct Torque Control (DTC). Tuning rules of the current and speed controllers. Estimators for drives: flux estimation, electromagnetic torque estimation and speed estimators. Sensorless control of electric drives. Self-commissioning.

Head Lecturer(s)

Sérgio Manuel Ângelo da Cruz

Assessment Methods

Assessment
Exam: 50.0%
Survey work/simulation work/experimental work about a given topic under the scope of the curricular unit: 50.0%

Bibliography

P. Vas (1998), Sensorless vector and direct torque control, Oxford University Press.