Determinación de perdidas energéticas que se producen en motores trifásicos asincrónicos tipo jaula de ardilla (MAJA3F) por la evolución de modos de fallo mediante termografía.

Abstract

Analazing the energetic losses that produce in the three-phase squirrel cage asynchronous motors (MAJA3F) by the evolution of failure mode with the purpose of quantify the losses that produce in the failed that reflect in the gradual variation through a predictive diagnostic technique known as thermography. It started with the digital modeling of the module simulator of failure through the computer tool: solid work, determining elements and components that allowed the construction of the module, which generated the simulation of failures of misalignment in parallel and energy imbalance in a transmission system of power pump motor. For the evolution of the failure mode of misalignment in parallel increased of 0.25 mm to 1 mm of displacement in parallel the engine with the pump, the intervals of time established after the analysis of the operational parameter of temperature of the engine was of 30 minutes. The failure mode of energetic imbalance was done applying 400W and 800W of imbalance in two phases, the thermograms were taken in periods of 15 minutes. The values of voltage and intensity that were presented as the failure mode was developing of progressive way; they were measured with the power quality analyzer FLUKE 435 series II. The temperature increase in the evolution of the failure modes allowed to identify the severity of the failure modes. The analysis made in function to the temperature in the system allowed to quantify the energy loss that produce as failures developed.