Noise reduction in switched reluctance motor with selective radial force harmonics reduction

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United States of America Patent

PATENT NO 11784599
APP PUB NO 20230253904A1
SERIAL NO

17665548

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Abstract

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An SR drive with an acoustic noise reduction system for reducing vibration and acoustic noise in a switched reluctance motor (SRM). The vibration and acoustic noise at specific harmonics of current excitation in SRM are in a proportional relationship with the radial force harmonics acting at SRM stator teeth. The acoustic noise reduction system includes a processor on which is installed an acoustic noise reduction application designed to derive an optimum current waveform for generating an average torque satisfying an optimum torque condition and creating radial force with minimum amplitude at the desired order of harmonics of current excitation. A reduction in the amplitude of the specific radial force harmonics utilizing the optimum current waveform minimizes the vibration and acoustic noise in the SRM. The acoustic noise reduction system applies turn-on and turn-off angles at the optimum current waveform to improve the system efficiency.

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Patent Owner(s)

Patent OwnerAddress
TOKYO INSTITUTE OF TECHNOLOGY2-12-1 OOKAYAMA MEGURO-KU TOKYO 1528550 ?1528550
TURNTIDE TECHNOLOGIES INC1295 FORGEWOOD AVENUE SUNNYVALE CA 94089

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Chiba, Akira Tokyo, JP 43 604
Desai, Piyush Des Plaines, US 18 270
Furqani, Jihad Bogor, ID 1 2
Wiguna, Candra Adi Kanagawa, JP 1 2

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