Smith-type Digital Control for a Cross-coupling Free AC Electrical Power Distribution System of the More Electric Aircraft

Peng, Qilin; Yang, Jiajun; Guenter, Sandro; Buticchi, Giampaolo; Tan, Nadia M. L.; Wheeler, Patrick; Hui, Yannian; Zhang, He

Abstract

The development of distributed generation systems and fully-controlled semiconductor devices has brought power electronic converters into the focus of scientific research. Synchronous reference frame-based controllers are commonly employed for the control of ac/dc converters owing to their simplicity and clear physical significance. However, in aircraft ac electrical power distribution system, the variable sampling-to-fundamental frequency ratio and higher rate of electronic devices compared to utility grid leads to more significant cross-coupling between d and q axis, which will lead to additional oscillation modes and even jeopardize the system stability. In this work, a discrete Smith predictor (SM)-based decoupling scheme is proposed with a hybrid reference frame (HRF) structure, which effectively decouples the 2 output channels without sophisticated system modeling or parameter designing process. A 2-level three-phase converter is used to elaborate its performance, experimental results show that the proposed scheme enhances the overall stability of the system with sufficient robustness against parameter variation.

Citation

Peng, Q., Yang, J., Guenter, S., Buticchi, G., Tan, N. M. L., Wheeler, P., Hui, Y., & Zhang, H. (2025). Smith-type Digital Control for a Cross-coupling Free AC Electrical Power Distribution System of the More Electric Aircraft. IEEE Transactions on Industry Applications, https://doi.org/10.1109/TIA.2025.3556797

• Journal Article Type: Article
• Acceptance Date: Apr 1, 2025
• Online Publication Date: Apr 1, 2025
• Publication Date: Apr 1, 2025
• Deposit Date: May 6, 2025
• Journal: IEEE Transactions on Industry Applications
• Print ISSN: 0093-9994
• Electronic ISSN: 1939-9367
• Publisher: Institute of Electrical and Electronics Engineers
• Peer Reviewed: Peer Reviewed
• DOI: https://doi.org/10.1109/TIA.2025.3556797
• Public URL: https://nottingham-repository.worktribe.com/output/48556962
• Publisher URL: https://ieeexplore.ieee.org/document/10946838