Efficiency Mapping and Weighted Average Efficiency for Large Hydrogenerators

Bortoni, Edson da Costa; Siniscalchi, Roberto Teixeira; Vaschetto, Silvio; Darmani, Mostafa Ahmadi; Cavagnino, Andrea

Abstract

This paper presents the concept of efficiency mapping for large synchronous hydrogenerators, which are useful for evaluating hydropower generation performance vis-à-vis interconnected intermittent generation to machine efficiency-oriented design. Tests for loss segregation at rated conditions are needed, and models for loss variation along all operational areas are presented. The weighted average efficiency is obtained as the summation of all operating load point efficiencies times related weights, defined according to criteria or from a 2D-histogram of machine operation. The proposed methodology is applied and compared for two machine designs and to an existent machine under operation.

Citation

Bortoni, E. D. C., Siniscalchi, R. T., Vaschetto, S., Darmani, M. A., & Cavagnino, A. (2021). Efficiency Mapping and Weighted Average Efficiency for Large Hydrogenerators. IEEE Open Journal of Industry Applications, 2, 11-20. https://doi.org/10.1109/OJIA.2020.3048989

• Journal Article Type: Article
• Acceptance Date: Dec 30, 2020
• Online Publication Date: Jan 5, 2021
• Publication Date: 2021
• Deposit Date: Jul 18, 2024
• Publicly Available Date: Jul 24, 2024
• Journal: IEEE Open Journal of Industry Applications
• Electronic ISSN: 2644-1241
• Publisher: Institute of Electrical and Electronics Engineers
• Peer Reviewed: Peer Reviewed
• Volume: 2
• Pages: 11-20
• DOI: https://doi.org/10.1109/OJIA.2020.3048989
• Keywords: General Medicine
• Public URL: https://nottingham-repository.worktribe.com/output/24424255
• Publisher URL: https://ieeexplore.ieee.org/document/9314213