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IET Electric Power Applications
Scopus
ISSN 1751-8679 · Wiley · 636 articles in the index
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Journal Article
Fault‐Tolerant Scheme for Single‐Switch Open‐Circuit Fault in CSI‐Fed Five‐Phase PMSM
ABSTRACT Due to their inherent capability to provide short‐circuit fault protection, combined with features, such as high torque density and reduced torque ripple, five‐phase permanent magnet synchronous motors (PMSMs) driven by current‐source inverters are highly suitable for mission‐critical…
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Journal Article
Design and Multi‐Physics Field Analysis of an Ultra High Speed PMSM With Integrated Rotor
ABSTRACT In order to improve the power density and efficiency of a hydrogen fuel vehicle, it is an effective method to design an ultra‐high‐speed centrifugal air compressor to supercharge the incoming air, which is also a great challenge. In this paper, four types of ultra‐high‐speed permanent…
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Journal Article
Experimental Validation of a Spoke Type Ferrite Permanent Magnet Machine Design for Heavy‐Duty Traction Applications
ABSTRACT Rare earth elements (REEs) are central to the current solutions used for traction applications. However, REEs have fragile supply chains, which exposes them to supply interruptions and price spikes. Research has been focusing on REE‐free solutions, either exploring REE‐free topologies…
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Journal Article
Enhanced Automated Condition Assessment of Induction Motor Bearings: A Novel Approach Using Matrix Pencil Mean Frequency Signal Processing and Multilayer Perceptron Neural Networks
ABSTRACT Vibration signal analysis plays a vital role in the condition‐based preventive maintenance of induction motor by identifying early signs of motor issues, avoiding costly breakdowns and optimising the motor's maintenance schedule. It provides detailed information very useful for extending…
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Journal Article
Hybrid CNN–Transformer Approach for Rotor Interturn Short‐Circuit Fault Detection in Doubly Fed Induction Generators at Synchronous Speed
ABSTRACT Doubly fed induction generators (DFIGs) are widely used in wind energy conversion systems due to their ability to provide variable‐speed operation, offering significant advantages in energy capture. However, the presence of interturn short‐circuit (ITSC) faults in the rotor windings of…
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Journal Article
ANN‐Based Alternative Controllers for Three‐Phase Four‐Wire Grid‐Connected NPC Inverters
ABSTRACT The synchronously rotating reference frame (SRRF)‐based proportional‐integral (PI) control technique has been though studied in many different inverter applications, a well‐designed and clearly presented application of this technique for the three‐phase, three‐level, three‐leg and…
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Journal Article
Reliability Analysis of Coils in a Coreless Axial Flux Motor Considering Axial Forces
ABSTRACT With the continuous development of new energy vehicle technology, coreless axial flux motors have garnered increasing attention due to their advantages in overload capacity and power density. However, as overload capacity and power density improve, the evaluation and enhancement of the…
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Journal Article
Optimisation of a Modified SynRM Based on a New Design Strategy Considering Line‐Start Capability and Improved Power Factor
ABSTRACT This paper presents a modified structure of synchronous reluctance motors (SynRMs) combined with a new design strategy in which hybrid optimisation is considered to enhance line start capability and power factor. The rotor design, along with some embedded permanent magnets (PMs), has an…
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Journal Article
Axial Force Negative Stiffness in Axial‐Flux Electric Machines
ABSTRACT This paper examines the axial force negative stiffness of the induction and permanent magnet (PM) axial‐flux machines. Simplified analytical models are used to identify the key normalised machine parameters which affect the variation of the axial force with the airgap length. The…
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Journal Article
Research on the Influence of Multi‐Harmonic Magnetic Field on the Stability of the Radial Suspension Force and Electromagnetic Torque of Bearingless Motors
ABSTRACT Bearingless motors can realise the rotor active suspension by the radial electromagnetic force, whereas the suspension force and torque ripple will increase the difficulty of motor control, which may lead to the stator and rotor collision and irreversible damage to the motor. In order to…
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Journal Article
Comparative Analysis and Optimisation Design of Flux Reversal Permanent Magnet Machines for In‐Wheel Applications
ABSTRACT High torque output capability is crucial for electric vehicle in‐wheel machines. In order to comprehensively evaluate the performance of different out rotor flux reversal permanent magnet (FRPM) machines, a comparative study of two FRPM machines with different topologies is conducted…
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Journal Article
Multi‐Physics Distribution Characteristics of Modules for Large‐Capacity HVDC Transformer Under Intermediate Frequency Conditions
ABSTRACT Large‐capacity high voltage direct current (HVDC) transformers are the core equipment of the future power system. The design and operation of these transformers involve the interaction of multiple physical fields. The use of multiphysics simulation technology can comprehensively consider…
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Journal Article
A Novel External‐Rotor Consequent‐Pole Machine With Asymmetrical and Hybrid Pole Arrangement for E‐Bike Application
ABSTRACT This article proposes a novel L‐shaped modular consequent‐pole permanent magnet (PM) machine with an asymmetrical and hybrid pole structure (namely the AHPLM‐CPM machine) designed for in‐hub electric bikes (e‐bikes). The AHPLM‐CPM machine combines L‐shaped modules with a consequent‐pole…
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Journal Article
Reliability Modelling and Misalignment Stability Optimization for Reliable Wireless Power Transfer System
ABSTRACT Recently, wireless power transfer (WPT) effectively meets the demands for distance, transfer power level, system efficiency and safety, making it highly promising for various applications. In practical applications, system performance is sensitive to the coil coupling, making reliability…
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Journal Article
Dynamic Performance Enhancement of YASA‐AFFSPM Motors Using Smoothed Active Disturbance Rejection Control and Sensorless Tracking
ABSTRACT This paper proposes a smoothed active disturbance rejection control (ADRC) strategy integrated with a hybrid sensorless algorithm to enhance the dynamic performance of a 12‐stator/19‐pole yokeless and segmented armature axial flux‐switching permanent magnet (12S/19P YASA‐AFFSPM) motor. The…
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Journal Article
Multiobjective Robust Optimisation Design for Nanocrystalline High‐Frequency Transformer Based on Multi‐Physical Field Considering Core Uncertainty
ABSTRACT High‐frequency transformers (HFTs) are critical in modern power electronics, especially for application scenarios requiring compact size, high efficiency and superior thermal stability. However, their performance is often constrained by manufacturing tolerance and material property…
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Journal Article
A Single‐Phase Grounding Fault Line Selection Method for Flexible Grounding Active Distribution Networks Based on the Ratio of Zero‐Sequence Current Changes
ABSTRACT Single‐phase grounding faults (SPGFs), especially high‐resistance faults, significantly weaken the electrical characteristics of active distribution networks (ADNs), thereby posing considerable challenges for faulted line selection (FLS). To address these challenges under flexible…
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Journal Article
Ageing Behaviours and Mechanisms of SiC MOSFET and Si IGBT in DC Solid‐State Circuit Breaker
ABSTRACT The rapid development of DC power systems in applications such as electric aircraft and microgrids has highlighted the need for high‐performance DC short‐circuit protection. Solid‐state circuit breakers (SSCBs), utilising power semiconductor devices, offer superior performance compared to…
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Journal Article
Multicondition Health Condition Assessment for Electric Motors Based on Knowledge Embedding Machine Learning and Statistical Data Fusion
ABSTRACT In industrial applications, motor operational status is crucial for production efficiency. However, timely detection and prediction of motor faults present significant challenges, often resulting in production incidents and substantial maintenance costs. This paper presents a novel…
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Journal Article
SPWVD‐YOLO11 Based Fault Diagnosis for Urban Rail Traction Motor Bearings Under Variable Operating Conditions
ABSTRACT In urban rail train traction motors, bearings serve as critical core components whose health status directly impacts traction motor operational performance and safety. Among various traction motor fault types, bearing faults have emerged as one of the most frequently occurring failure…