A project-based learning approach to teaching power electronics: Difficulties in the application of Project-Based Learning in a subject of Switching-Mode Power Supplies

This paper presents the introduction of Problem-Based learning (PBL) in a power electronics subject at the University of Oviedo (SPAIN) by means of two practical projects: the design and construction of a Switching-Mode Power Supply (SMPS) prototype and the static study of a dc-dc converter topology. The objective of this change in the traditional methodology of the Power Electronics course is to foster the application of the knowledge acquired by students in theory classes. PBL is known to be a motivating, problem-centered teaching method that brings the real professional world closer to the student. For this reason, the lecturers considered PBL to be the most suitable methodology to obtain the desired results. The underlying methodology, task planning and assessment of these projects will be presented. Furthermore, the influence of the introduction of PBL in practical sessions versus the traditional teaching method will be discussed. Finally, the lecturers' reflections and conclusions regarding the application of PBL in this subject over the last two years will be presented.

I. Introduction

It is well known that electrical engineers are recognized for their contributions to technology and for their improvements to global conditions. This is due to the fact that their main skill is the application of mathematics and scientific knowledge to the real world. However, traditional practical classes in Electrical Engineering curricula may obviate this fact because they are seen by students as a mere requirement without any interest in the real world. Therefore, the main skill involved in electrical engineering (the transfer of acquired scientific knowledge to society) is not enhanced because students do not see the real application of the work carried out in practical sessions.