Percorrer por autor "Peláez, G."
A mostrar 1 - 3 de 3
Resultados por página
Opções de ordenação
- Dynamics parameters estimation of an asynchronous machine plus mechanical shaft set through orbit frequency response analysisPublication . Oliveira, F.; Donsión, M. P.; Peláez, G.This paper presents some of the results obtained upon the experimental study of the behaviour of a prototype mechanical shaft driven by an induction electric machine. The main focus of this paper will be on the mechanical response of the set, based on the measurement of a number of mechanical variables and its integration in well-known mechanical models, allowing a more accurate estimation of the actual parameters of the prototype machine. The results thus obtained can then be used to test the theoretical models, estimate mechanical parameters more accurately and generally increase knowledge on the mechanical response of the prototype set.
- Experimental study of thermal and vibrational behaviour of an induction motorPublication . García, D.; Oliveira, F.T.; Peláez, G.; Donsión, M.P.Induction machines are the most common option to generate rotary motor in industry, and at present the use of variable speed drives with these machines is spreading in an unprecedented way. This has mostly to do with the advantages provided by these devices, such as added versatility and, in most cases, improved overall efficiency. Because variable speed drives provide a modified wave form, non-sinusoidal, several power quality issues and some effects can be observed. This paper focus particularly on the thermal and vibrational effects, and forms part of a broader study on the effects of the power supply on the behaviour of dynamic rotary loads.
- Rotating speed stability and mechanical vibration analysis of one-stage inertia flexible rotor driven by variable speed drivesPublication . Oliveira, Filipe Tadeu; Donsión, M.P.; Peláez, G.This paper poses some questions as to the adequacy of the widespread use of variable speed drives. It presents a comparison of different variable speed drives, by studying their output wave forms and applying them to a mechanical one stage inertia flexible rotor specially designed for this purpose. The comparison of the output of the variable speed drives used reveals significant differences between them, which affect the way the load is driven and the overall behaviour of the mechanical system. A comparison against a sine wave reference shows that even the best of the variable speed drives used is outperformed, since the “perfect” sine wave ensures constant rotating speed, thus minimizing vibrations along the mechanical shaft.