Automatic Power Frequency Rejection Instrumentation for Nonintrusive Frequency Signature Tracking
- 주제(키워드) Frequency tracking , nonintrusive monitoring , rotor slot harmonic , speed estimation , switched-capacitor (SC) notch filter
- 주제(기타) Engineering, Electrical & Electronic
- 주제(기타) Instruments & Instrumentation
- 설명문(일반) [Lee, Kahyun; Huchel, Lukasz; Green, Daisy H.; Leeb, Steven B.] MIT, Dept Elect Engn & Comp Sci EECS, Cambridge, MA 02139 USA
- 등재 SCIE, SCOPUS
- 발행기관 IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
- 발행년도 2021
- 총서유형 Journal
- URI http://www.dcollection.net/handler/ewha/000000182516
- 본문언어 영어
- Published As http://dx.doi.org/10.1109/TIM.2020.3009339
초록/요약
This article presents a design for data acquisition hardware that can automatically track and reject utility frequency components of a measured current or voltage waveform. Measurements of subtle harmonic content in the waveform can therefore be made with the full dynamic range of the on-board analog-to-digital converter. This permits the detection of small, higher frequency signals for applications to condition-based maintenance and energy scorekeeping. Experimental demonstrations in this article show the hardware prototype isolating the rotor slot harmonics in a motor's input current. The high-resolution measurements of slot harmonics permit the estimation of motor speed from the detected slot harmonic frequency and the rejected fundamental frequency. The performance and accuracy of the speed estimator are demonstrated with both steady-state and transient experiments.
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