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Implementation of a Simulator for the Most Commonly Found Industrial Motor Loads Based on Pulse-width Modulation Inverters and Torque Estimator

2013; Taylor & Francis; Volume: 41; Issue: 3 Linguagem: Inglês

10.1080/15325008.2012.742946

1532-5016

José Carlos Grilo Rodrigues, Ângelo José Junqueira Rezek, Manuel Luiz Barreira Martinez, Délvio Franco Bernardes, Nery de Oliveira Júnior,

Sensorless Control of Electric Motors

Abstract The aim of this article is to present the results of the implementation of a simple generic load simulator using pulse-width modulation inverters. The implementation of this load simulator took place at Universidade Federal de Itajubá's electrical drives laboratory. Different types of load can be simulated to evaluate the performance of electric motors in electrical drives. The implemented system shows satisfactory results, even at low speeds. The system arrangement utilizes two pulse-width modulation inverters (one for the motor and the other for the generator), a PC microcomputer, and a data acquisition board installed in a free slot of the microcomputer. A tachogenerator is also used to provide an analog speed signal as well as LabVIEW data acquisition (Hungary) for filtering speed and torque signals for better visualization and interpretation of the results. The torque signal is originated from the motor pulse-width modulation inverter torque transducer.