Fault-Tolerant Control of a High-Reliability Six-Phase Axial Flux Switching Permanent Magnet Machine

IF 1.5 4区 工程技术 Q3 ENGINEERING, ELECTRICAL & ELECTRONIC
Javad Rahmani-Fard, Ali Mohammed Ridha, Mustafa Habeeb Chyad, Mohammed Jamal Mohammed
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Abstract

In this study, a novel six-phase axial flux switching permanent magnet machine (AFFSSPM-TS) with a twisted structure is explored to enhance fault tolerance and overall system reliability. This design integrates the advantages of flux switching permanent magnet (FSPM) machines, such as high-power density and robust structural characteristics, while significantly improving fault resilience. The machine's electromagnetic behaviour and fault-tolerant capabilities are assessed through experimental validation. To ensure stable torque output under single-phase faults, an advanced control strategy is introduced, regulating the q-axis current and zero-sequence components within the synchronous reference frame. This approach effectively mitigates torque loss caused by phase disconnection while optimising copper losses. Furthermore, a weighted multi-objective optimisation framework, utilising a Genetic Algorithm (GA), is implemented to refine the fault-tolerant current references, maximising torque output and minimising energy dissipation under fault conditions. For short-circuit faults, a compensation strategy based on fault decomposition is developed, eliminating the need for complex real-time computations by directly compensating for faulty phase currents. Experimental results on a prototype machine confirm the proposed control strategy's effectiveness in maintaining torque performance and fault-handling capability.

Abstract Image

高可靠性六相轴向磁通开关永磁电机的容错控制
为了提高系统的容错性和整体可靠性,研究了一种新型的六相轴向磁通开关永磁电机(AFFSSPM-TS)。本设计融合了磁通开关永磁(FSPM)电机功率密度高、结构坚固等优点,同时显著提高了故障恢复能力。通过实验验证,评估了机器的电磁性能和容错能力。为了保证单相故障时的稳定转矩输出,引入了一种先进的控制策略,在同步参照系内调节q轴电流和零序分量。这种方法有效地减轻了因断相引起的转矩损失,同时优化了铜损耗。此外,利用遗传算法(GA)实现了加权多目标优化框架,以改进容错电流参考,最大限度地提高扭矩输出和最小化故障条件下的能量消耗。针对短路故障,提出了一种基于故障分解的补偿策略,通过直接补偿故障相电流,消除了复杂的实时计算。在样机上的实验结果验证了该控制策略在保持转矩性能和故障处理能力方面的有效性。
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来源期刊
Iet Electric Power Applications
Iet Electric Power Applications 工程技术-工程:电子与电气
CiteScore
4.80
自引率
5.90%
发文量
104
审稿时长
3 months
期刊介绍: IET Electric Power Applications publishes papers of a high technical standard with a suitable balance of practice and theory. The scope covers a wide range of applications and apparatus in the power field. In addition to papers focussing on the design and development of electrical equipment, papers relying on analysis are also sought, provided that the arguments are conveyed succinctly and the conclusions are clear. The scope of the journal includes the following: The design and analysis of motors and generators of all sizes Rotating electrical machines Linear machines Actuators Power transformers Railway traction machines and drives Variable speed drives Machines and drives for electrically powered vehicles Industrial and non-industrial applications and processes Current Special Issue. Call for papers: Progress in Electric Machines, Power Converters and their Control for Wave Energy Generation - https://digital-library.theiet.org/files/IET_EPA_CFP_PEMPCCWEG.pdf
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