Introduction of new and cost effective technologies in the ENT power laboratory

Abstract

Power systems is an important component of a well-rounded electrical engineering technology program. However, since power systems tends to be a rather complex topic, students react positively to hands-on experiments that assist them visualize power systems in practical situations, and, in today's technology, utilizing and integrating computers within loop is essential. Electrical power engineering has for many years been taught in a rather traditional manner. Laboratory equipment is based on large test sets using analogue instrumentation. Computerization of these teaching laboratories that allows data acquisition and display of data has not been widely used. It should be noted that developing a fully functional high voltage Power Systems Lab that would cover all the various areas of power and their control systems would require a large facility and hundreds of thousands of dollars and possibly into the millions dollars1. A number of Universities work in conjunction with large power companies to subsidize the cost of these larger laboratories2. An innovative power system laboratory has been developed in our department of engineering technology to fill this need. The UNItrain-I® Training Platform is the new standard for State-of-the-Art instruction and experimentation. Captivating Computer Aided Instruction (CAI) provides a basic overview of theory under study, complementing the eLearning Courseware, and includes animated instructions on experimental procedures, incorporates UNItrain-I Courseware into Learning Management System or use LabSOFT to edit, manage, and deliver content & control student access. The system includes a diverse collection of experimental and theoretical courses. Students can choose between a wide range of turnkey experiment cards with patching cords, or breadboard packages that include all necessary components. The extensive suite of PC Based Virtual Instruments allows students to conduct real-time measurements with Data Acquisition via computer's USB or RS232 port. The system is WEB COMPATIBLE; it uses LabSOFT to manage Courses over the Internet or link with your School IMS for web-based content. Furthermore, it can be used as Distance Learning Lab that includes Robust Platform Engaging CAI Virtual Instruments, Optional Breadboard and Design Software. The Virtual Instruments Include: Analog & Digital Multimeters, Oscilloscope, Spectrum Analyzer, Function Generator, Logic Analyzer, AC/DC Power Supplies, Relay Control, Digital I/O Monitors, Frequency Analyzer, Frequency Counter, Power Vector Display, Bode Plots, Step Response and more ... The Trainer is complete with the necessary power supplies, loading and testing devices and PC virtual instrumentation for the metering of all system values. Detailed laboratory notes are provided, which cover experimental operation and practical training on: Electrical Technology, Single Phase Transformers, Three Phase Transformers, DC Machines, AC Single Phase and Three Phase Machines, Machine Loading Systems, Instrumentation, Electromagnetic Motor Control. It allows the investigation of various starting and controlling techniques. A low power, industrial motor system is used in demonstrating the minimum control functions for speed control of a three-phase induction motor as well as control of DC motors. This State-of-the-Art technology allowed our department to develop a power laboratory for less than 5% cost of traditional laboratory that does not require an oversized space. Furthermore, it is portable and will be very suitable for underdeveloped countries where they have limited resources. © American Society for Engineering Education, 2007.