Improving the Teaching of Vector Group of Three-Phase Transformer by Integrating Software and Hardware Tools into Classroom

Abstract

This paper proposes methods of improving the teaching of vector group of three-phase transformer by integrating software and hardware tools into the classroom. Vector group of the three-phase transformer is an essential topic in electrical engineering curricula at universities. Typically, vector group of the three-phase transformer is taught in the classroom using pure theorem. In this paper, the advantages of hardware and software tools are used to reinforce the teaching of vector group of a three-phase transformer. Firstly, an object-oriented vector group of three-phase transformer simulation environment is constructed using Simulink. Secondly, to verify the validity of the simulation results, portable hardware tools of vector group of a three-phase transformer are integrated into the classroom. The main components consist of three single-phase transformers, a smart oscilloscope, and a mini inverter. Because of the components’ compact size, low weight, low voltage, low current, and reasonable cost, they are very suitable for a lecturer to integrate them into the electric machinery course. The effect of some forms of vector groups on the reduction of harmonics is also presented. The proposed methods have been successfully used at Kasetsart University Sriracha Campus, Thailand. They can help students to understand vector group of a three-phase transformer and assists lecturers to enhance the effectiveness of the teaching. The proposed methods have produced a favorable response from the students.