Open-Circuit Fault Control Techniques for Bearingless Multisector Permanent Magnet Synchronous Machines

Wen, Zhuang; Valente, Giorgio; Formentini, Andrea; Papini, Luca; Gerada, Chris; Zanchetta, Pericle

Abstract

This article presents three-phase and single-phase open-circuit fault-tolerant control strategies of radial suspension force and torque generation for bearingless multisector surface mounted permanent magnet synchronous machines. A combined winding topology is installed in the stator so that each phase contributes to both suspension force and motoring torque production. Indeed, a triple sectored three-phase winding is employed. Each three-phase winding is supplied by a power converter to independently control the suspension force vector and torque over each sector. An analytical formulation of the force and torque generation is described considering both three-phase open-circuit and single-phase open-circuit fault conditions. The analytical models of the machine are presented in a generalized matrix form so that they can be applied to any machine with a multisector winding structure. The analytical models are then used to derive the control algorithms that allow us to control the bearingless machine when a whole three-phase winding or one phase of one or two sectors are open circuited. The theoretical analysis is verified with both finite elements analysis and experiment tests. This system shows a good open-circuit fault-tolerant capability.

Citation

Wen, Z., Valente, G., Formentini, A., Papini, L., Gerada, C., & Zanchetta, P. (2021). Open-Circuit Fault Control Techniques for Bearingless Multisector Permanent Magnet Synchronous Machines. IEEE Transactions on Industry Applications, 57(3), 2527-2536. https://doi.org/10.1109/tia.2021.3060368

• Journal Article Type: Article
• Acceptance Date: Feb 7, 2021
• Online Publication Date: Feb 18, 2021
• Publication Date: 2021-05
• Deposit Date: Dec 13, 2024
• 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
• Volume: 57
• Issue: 3
• Pages: 2527-2536
• DOI: https://doi.org/10.1109/tia.2021.3060368
• Keywords: Control and Systems Engineering; Electrical and Electronic Engineering; Industrial and Manufacturing Engineering
• Public URL: https://nottingham-repository.worktribe.com/output/5620213
• Publisher URL: https://ieeexplore.ieee.org/document/9357994