Title: Accurate Rotational Speed Measurement for Determining the Mechanical Power and Efficiency of Electrical Machines
Authors: Song, Zihang, Physikalisch-Technische Bundesanstalt (PTB), Fachbereich 1.2, Festkörpermechanik, ORCID: 0000-0001-8153-1206
Weidinger, Paula, Physikalisch-Technische Bundesanstalt (PTB), Fachbereich 1.2, Festkörpermechanik, ORCID: 0000-0003-2978-0672
Kumme, Rolf, Physikalisch-Technische Bundesanstalt (PTB), Fachbereich 1.2, Festkörpermechanik
Contributors: HostingInstitution: Physikalisch-Technische Bundesanstalt, ISNI: 0000 0001 2186 1887
Pages:5
Language:en
DOI:10.7795/EMPIR.19ENG08.CA.20230831A
Resource Type: Text / Conference Article
Publisher: Physikalisch-Technische Bundesanstalt
Rights: Download for personal/private use only, if your national copyright law allows this kind of use.
Relationships: IsIdenticalTo: DOI 10.23919/ICEMS52562.2021.9634265
Dates: Available: 2023-09-01
Created: 2023
File: Download File (application/pdf) 704.89 kB (721808 Bytes)
MD5 Checksum: 10a36fbbc1c82120745cc55759ca9f95
SHA256 Checksum: c1190b7250d6cfba8056cc9196432d2faa73fb5e4ff290ad92d7cb951f83d020
Keywords: rotational speed measurement ; encoder ; mechanial power measurement ; efficiency determination
Abstract: Accurately measuring the mechanical power of electrical machines is essential for determining their efficiency. Conventionally, the machines' rotational speed is measured over a short time interval with a high measurement uncertainty. In this paper, we propose a rotational speed determination based on the angle covered within a longer time interval. This method is shown to achieve a higher accuracy for the determination of mechanical power and total efficiency with negligible systematic effect.
Other: This is an author-created, un-copyedited version of a Conference contribution published in 2021 24th International Conference on Electrical Machines and Systems (ICEMS), 2021, 10.23919/ICEMS52562.2021.9634265.
Citation: Song, Zihang ; et al., Accurate Rotational Speed Measurement for Determining the Mechanical Power and Efficiency of Electrical Machines Physikalisch-Technische Bundesanstalt (PTB), 2023. DOI: https://doi.org/10.7795/EMPIR.19ENG08.CA.20230831A
Funding: European Commission (EC), ISNI: 0000 0001 2162 673X, Grant Title: Traceable mechanical and electrical power measurement for efficiency determination of wind turbines, Grant Number: EMPIR 19ENG08 WindEFCY