Advanced System for Testing of Three-Phase Induction Machines

This document presents an implementation of an advanced system that uses virtual instrumentation as the main component in the process of measurement and testing of three-phase induction machines. This approach permits the replacement of the old analog measurement techniques-which are still in use in the industry applications at some electrical motor testing benches, with the new advanced measurement system bench. This system bench is capable of Data Acquisition, Storage or Memorization on different media, Visualization of relevant Graphs, printing or distribution of Technical Reports or Analysis on-line or off-line in an automated manner. The general architecture of the proposed system is focused on the hardware components (transducers, conditioning, data acquisition, calculator) and software components (driver for the acquisition and manipulation-calculation of data, graphical presentation, other auxiliary programs and the ones to bring all the components together, virtual instruments). Some of the most important requirements of the international standards for testing three-phase induction motors are used: as general technical verification, determination of the windings resistance in DC, no-load testing; necessary virtual instruments can be easily further added to the system: locked rotor testing, running characteristics, temperature-rise test. This system would be very useful in industry applications in the domains of electrical machines for testing workbenches and design laboratories.