Open AccessAcoustic Noise Reduction of Switched Reluctance Motor With Reduced RMS Current and Enhanced Efficiency
Author(s) -
Jacob Bayless,
Noboru Kurihara,
Hiroya Sugimoto,
Akira Chiba
Publication year - 2016
Publication title -
ieee transactions on energy conversion
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.544
H-Index - 178
eISSN - 1558-0059
pISSN - 0885-8969
DOI - 10.1109/tec.2015.2496968
Subject(s) - power, energy and industry applications , geoscience
A general condition is derived for the reduction of stator vibrations in multiphase switched-reluctance motors (SRMs) through current regulation in a low-torque and low-speed region. By exploring a wider space of solutions than had previously been examined, optimized solutions are found which simultaneously minimize acoustic noise and vibration, and also minimize qualities such as copper loss, peak current, or torque ripple. In particular, the current profile is represented as a Fourier sum of three harmonics and the phase shift of these harmonics is examined. Experiments show a reduction of motor losses by 10% to 20% relative to previous attempts at proposed waveforms, while achieving a similar reduction in acoustic noise and vibration. In general, current profiling for noise reduction resulted in reduced efficiency; however, in this paper, it was found that motor efficiency can be enhanced relative to conventional square waveform current regulation, while reducing acoustic noise and vibration significantly.