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27 results on '"Kurihara, Noboru"'

3. Acoustic Noise Reduction of Switched Reluctance Motor With Reduced RMS Current and Enhanced Efficiency

Author

BAYLESS, Jacob Daniel, Bayless, Jacob Daniel, Kurihara, Noboru, Sugimoto, Hiroya, and Chiba, Akira

Subjects
010302 applied physics, Physics, Stator, Noise reduction, 020208 electrical & electronic engineering, Energy Engineering and Power Technology, 02 engineering and technology, 01 natural sciences, Switched reluctance motor, Copper loss, Reluctance motor, law.invention, Control theory, law, Harmonics, 0103 physical sciences, 0202 electrical engineering, electronic engineering, information engineering, Waveform, Torque ripple, Electrical and Electronic Engineering
Abstract

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.

Published
2016

24. Biosynthesis of lactacystin. Origin of the carbons and stereospecific NMR assignment of the two diastereotopic methyl groups

Author

Nakagawa, Akira, primary, Takahashi, Senji, additional, Uchida, Kenichi, additional, Matsuzaki, Keiichi, additional, Ōmura, Satoshi, additional, Nakamura, Asao, additional, Kurihara, Noboru, additional, Nakamatsu, Tsuyoshi, additional, Miyake, Yoko, additional, Take, Kanako, additional, and Kainosho, Masatsune, additional

Published
1994
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