Tools for Three-Phase System Laboratory Sessions

Training on measurements to determine the characteristics of three-phase electrical systems is very useful for a deep knowledge of the theoretical aspects, particularly for electrical engineering undergraduates. The technological development requires the realization of tools which gradually familiarize the students with advanced technologies for measurement during the training activity. Three different tools have been implemented during the last three years in order to improve on purpose the didactic value of the laboratory sessions. In the first tool a complex hardware and software system is implemented: the system includes electromechanical instruments for a better understanding of the three-phase system operation and can be used in distance learning sessions, on account of the realized virtual instrument. The second tool provides different features from the previous one: indeed, it is based on advanced technologies and has been redesigned in order to realize an electronic power meter, active and reactive, in a wide range of current values. The last tool is a didactically valuable three-phase energy meter, an industrial technical instrument, ready to be characterized.