Numerical modal analysis of vibrations in a three-phase linear switched reluctance actuator

article

Salvado, José
Calado, Maria do Rosário
Espiríto Santo, António
Guerman, Anna

Hindawi Publishing Corporation

SALVADO, José [et al.] (2017) - Numerical modal analysis of vibrations in a three-phase linear switched reluctance actuator. Modelling and Simulation in Engineering. ISSN 1687-5605. Vol. 2017, p. 1-18

1687-5605

10.1155/2017/3258376

Numerical modal analysis of vibrations in a three-phase linear switched reluctance actuator

Vibration analisys
Linear switched reluctance actuators

2017-10-20T10:05:31Z
2017-10-20T10:05:31Z
2017-04-18

This paper addresses the problem of vibrations produced by switched reluctance actuators, focusing on the linear configuration of this type of machines, aiming at its characterization regarding the structural vibrations. The complexity of the mechanical system and the number of parts used put serious restrictions on the effectiveness of analytical approaches. We build the 3D model of the actuator and use finite element method (FEM) to find its natural frequencies. The focus is on frequencies within the range up to nearly 1.2 kHz which is considered relevant, based on preliminary simulations and experiments. Spectral analysis results of audio signals from experimental modal excitation are also shown and discussed. The obtained data support the characterization of the linear actuator regarding the excited modes, its vibration frequencies, and mode shapes, with high potential of excitation due to the regular operation regimes of the machine. The results reveal abundant modes and harmonics and the symmetry characteristics of the actuator, showing that the vibration modes can be excited for different configurations of the actuator. The identification of the most critical modes is of great significance for the actuator’s control strategies. This analysis also provides significant information to adopt solutions to reduce the vibrations at the design.
info:eu-repo/semantics/publishedVersion

openAccess
http://creativecommons.org/licenses/by/4.0/

eng