Automated Maximum Torque per Ampere Identification for Synchronous Reluctance Machines with Limited Flux Linkage Information

Wang, Shuo; Varvolik, Vasyl; Bao, Yuli; Aboelhassan, Ahmed; Degano, Michele; Buticchi, Giampaolo; Zhang, He

Abstract

The synchronous reluctance machine is well-known for its highly nonlinear magnetic saturation and cross-saturation characteristics. For high performance and high-efficiency control, the flux-linkage maps and maximum torque per ampere table are of paramount importance. This study proposes a novel automated online searching method for obtaining accurate flux-linkage and maximum torque per ampere Identification. A limited 6 × 2 dq-axis flux-linkage look-up table is acquired by applying symmetric triangle pulses during the self-commissioning stage. Then, three three-dimensional modified linear cubic spline interpolation methods are applied to extend the flux-linkage map. The proposed golden section searching method can be easily implemented to realize higher maximum torque per ampere accuracy after 11 iterations with a standard drive, which is a proven faster solution with reduced memory sources occupied. The proposed algorithm is verified and tested on a 15-kW SynRM drive. Furthermore, the iterative and execution times are evaluated.

Citation

Wang, S., Varvolik, V., Bao, Y., Aboelhassan, A., Degano, M., Buticchi, G., & Zhang, H. (2024). Automated Maximum Torque per Ampere Identification for Synchronous Reluctance Machines with Limited Flux Linkage Information. Machines, 12(2), Article 96. https://doi.org/10.3390/machines12020096

• Journal Article Type: Article
• Acceptance Date: Dec 20, 2023
• Online Publication Date: Jan 29, 2024
• Publication Date: 2024-02
• Deposit Date: May 10, 2024
• Publicly Available Date: May 10, 2024
• Journal: Machines
• Electronic ISSN: 2075-1702
• Publisher: MDPI
• Peer Reviewed: Peer Reviewed
• Volume: 12
• Issue: 2
• Article Number: 96
• DOI: https://doi.org/10.3390/machines12020096
• Keywords: synchronous reluctance motors, golden section searching method, magnetic saturation, flux-linkage map, three-dimensional modified linear cubic spline interpolation method, maximum torque per ampere
• Public URL: https://nottingham-repository.worktribe.com/output/31434707