Implementación de dos módulos didácticos para control de velocidad de motores trifásicos utilizando variadores de frecuencia.

Abstract

The ESFOT Industrial Technology Laboratory has several didactic modules that allow students to handle industrial equipment, thus complementing their learning through practicals. However, the laboratory doesn't have enough devices that allow, for example, to efficiently control the speed and torque of the available asynchronous three-phase motors. For this reason, the implementation of two didactic modules using frequency inverters was considered. The didactic modules are two mobile metal structures, each of the modules has a frequency inverter, a space to place a three-phase motor, and a connection panel where are located most of the control elements such as digital and analog inputs, relay type outputs, analog outputs, and communication ports (Modbus TCP or Ethernet). The elements mentioned, the control functions of the drive, and the possibility of connecting them with other devices such as PLCs, allow simulating different processes in laboratory practices, where the speed control of three-phase motors is required.