Iet Electric Power Applications最新文献

Winding Configurations and Performance of Heteropolar Electrodynamic Magnetic Bearings 异极电磁轴承的绕组结构与性能

IF 1.5 4区工程技术

Iet Electric Power Applications Pub Date : 2025-10-01 DOI: 10.1049/elp2.70105

Abdoalateef Alzhrani, Kais Atallah

{"title":"Winding Configurations and Performance of Heteropolar Electrodynamic Magnetic Bearings","authors":"Abdoalateef Alzhrani, Kais Atallah","doi":"10.1049/elp2.70105","DOIUrl":"https://doi.org/10.1049/elp2.70105","url":null,"abstract":"The requirement for high speed reliable and efficient bearing operation drove the research into magnetic bearings. In the past decades, active magnetic bearings (AMBs), which are known for their operational cost and complexity, have received significant attention, and have been utilised in high-speed industrial applications. On the other hand, electrodynamic magnetic bearings (EDBs) are a different type of magnetic bearing that offers passive, efficient and more importantly stable operation. Nevertheless, despite these advantages, EDBs have received relatively little attention. This paper focuses on the heteropolar variant of EDB, with particular emphasis on winding configurations and the effects of design parameters. A comparison between winding configurations recommended in the literature and a simpler winding configuration proposed by the authors is undertaken. It is shown that both winding configurations exhibit similar performance, in terms of restoring force production and stability. Furthermore, the effects of the leading design parameters of EDB employing the proposed windings are investigated. Moreover, to validate some of the findings a test rig is developed, and good agreement between measured and predicted forces is shown for different eccentricities.","PeriodicalId":13352,"journal":{"name":"Iet Electric Power Applications","volume":"19 1","pages":""},"PeriodicalIF":1.5,"publicationDate":"2025-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ietresearch.onlinelibrary.wiley.com/doi/epdf/10.1049/elp2.70105","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145223989","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Correction to “Decomposition and Investigation of Torque Components of Dual-PM Machines” 对“双pm电机转矩分量的分解与研究”的修正

IF 1.5 4区工程技术

Iet Electric Power Applications Pub Date : 2025-09-30 DOI: 10.1049/elp2.70108

引用次数: 0

Comparative Analysis and Optimisation Design of Flux Reversal Permanent Magnet Machines for In-Wheel Applications 轮毂用磁通反转永磁电机的比较分析与优化设计

IF 1.5 4区工程技术

Iet Electric Power Applications Pub Date : 2025-09-29 DOI: 10.1049/elp2.70092

Yunpeng Zhang, Zhenyang Qiao, Weinong Fu

{"title":"Comparative Analysis and Optimisation Design of Flux Reversal Permanent Magnet Machines for In-Wheel Applications","authors":"Yunpeng Zhang, Zhenyang Qiao, Weinong Fu","doi":"10.1049/elp2.70092","DOIUrl":"https://doi.org/10.1049/elp2.70092","url":null,"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. Different from the conventional consequent pole FRPM machines (CPFRPM), the FRPM machine with auxiliary teeth (ATFRPM) features a stator tooth with a complete piece of permanent magnet (PM) of the same polarity, whereas the adjacent stator tooth is devoid of any PM. The paper introduces the topology structure of the machine using a 24-slot/22-pole combination and analyses its operation principle. Geometrical parameters are globally optimised to improve torque performance of FRPM machines. Furthermore, the electromagnetic characteristics of the CPFRPM and ATFRPM machines are compared under the same current density. The ATFRPM machine exhibits superior performance in efficiency, power factor and torque density. Finally, an ATFRPM machine prototype is manufactured to verify the theoretical analysis, and the experimental results confirm the effectiveness of the simulation analysis and optimised design.","PeriodicalId":13352,"journal":{"name":"Iet Electric Power Applications","volume":"19 1","pages":""},"PeriodicalIF":1.5,"publicationDate":"2025-09-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ietresearch.onlinelibrary.wiley.com/doi/epdf/10.1049/elp2.70092","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145224223","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Ensemble Learning-Based Data Augmentation for Condition Monitoring of Induction Machines 基于集成学习的感应电机状态监测数据增强

IF 1.5 4区工程技术

Iet Electric Power Applications Pub Date : 2025-09-27 DOI: 10.1049/elp2.70106

Md Masum Billah, Ahmed Hemeida, Karolina Kudelina, Bilal Asad, Muhammad U. Naseer, Anouar Belahcen

{"title":"Ensemble Learning-Based Data Augmentation for Condition Monitoring of Induction Machines","authors":"Md Masum Billah, Ahmed Hemeida, Karolina Kudelina, Bilal Asad, Muhammad U. Naseer, Anouar Belahcen","doi":"10.1049/elp2.70106","DOIUrl":"10.1049/elp2.70106","url":null,"abstract":"This study addresses the challenges of machine learning-based condition monitoring of induction machines under varying load conditions, which can result in low accuracy at unmeasured loading levels. A hybrid data augmentation framework is developed that combines multiple regression models and ensemble learning techniques to generate feature values at any unmeasured loading levels. The proposed method requires feature computation from only four measured loading levels under healthy, one, two and three broken rotor bars conditions as training data, enabling feature values augmentation for other loading levels. In this study, the augmentation method is applied to generate feature values at two intermediate levels (50% and 75%) and one extreme level (100%) and the corresponding results are presented. This hybrid data augmentation method not only produces accurate feature values for intermediate loading levels but also performs exceptionally well in extrapolating feature values at extreme loading levels. Incorporating this generated data during the training phase resolves generalisation issues and substantially improves the classification accuracy of machine learning models. In particular, the integration of ensemble learning techniques helped to increase accuracy from 38.75%, 42.75% and 60%–100% for the K-nearest neighbours, support vector machine and decision tree models, respectively, at the 100% loading level.","PeriodicalId":13352,"journal":{"name":"Iet Electric Power Applications","volume":"19 1","pages":""},"PeriodicalIF":1.5,"publicationDate":"2025-09-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ietresearch.onlinelibrary.wiley.com/doi/epdf/10.1049/elp2.70106","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145146958","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Innovative Blade-Structured Rotor Design for Enhanced Self-Cooling in Permanent Magnet Machines 改进永磁电机自冷却的叶片结构转子设计

IF 1.5 4区工程技术

Iet Electric Power Applications Pub Date : 2025-09-25 DOI: 10.1049/elp2.70088

Kaile Li, Guang-Jin Li

{"title":"Innovative Blade-Structured Rotor Design for Enhanced Self-Cooling in Permanent Magnet Machines","authors":"Kaile Li, Guang-Jin Li","doi":"10.1049/elp2.70088","DOIUrl":"https://doi.org/10.1049/elp2.70088","url":null,"abstract":"This paper proposes a novel self-cooling solution for surface-mounted permanent magnet machines, which are widely used in various industry sectors. By properly designing a propeller and integrating it into the rotor structure, leading to a blade-structured rotor design, the self-cooling capability is achieved without the need for rotor wafters or rotor mounted fans. When rotor rotates, the cooling air (coolant) is drawn into the machine through inlets and expelled from the outlets, both inlets and outlets can be in the endplates or in the housing. During this process, air will thoroughly contact various internal components, such as end-windings, stator and rotor iron cores, along its flow path. As a result, internally generated heat in the windings and in the rotor mounted permanent magnets will be removed effectively. The study focuses particularly on the hot spots (locations with highest temperature) along the airflow path, such as the end-windings and permanent magnets. Different factors that affect the efficacy of this self-cooling solution, such as the number of propeller blades, position and size of inlets and outlets and rotor rotational speeds, are studied and compared. These studies are initially based on 3-dimensional computational fluid dynamic models and later validated through a series of experiments.","PeriodicalId":13352,"journal":{"name":"Iet Electric Power Applications","volume":"19 1","pages":""},"PeriodicalIF":1.5,"publicationDate":"2025-09-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ietresearch.onlinelibrary.wiley.com/doi/epdf/10.1049/elp2.70088","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145146762","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Analysis and Optimisation of DC-Side Filter Capacitor Parasitic Parameters on Output Performance of Dual Three-Phase Rectifier Synchronous Generator 直流侧滤波电容寄生参数对双三相整流同步发电机输出性能的影响分析与优化

IF 1.5 4区工程技术

Iet Electric Power Applications Pub Date : 2025-09-23 DOI: 10.1049/elp2.70101

Meijun Qi, Jiakuan Xia, Jianping Yu, Tingting Hou, Hang Su

{"title":"Analysis and Optimisation of DC-Side Filter Capacitor Parasitic Parameters on Output Performance of Dual Three-Phase Rectifier Synchronous Generator","authors":"Meijun Qi, Jiakuan Xia, Jianping Yu, Tingting Hou, Hang Su","doi":"10.1049/elp2.70101","DOIUrl":"10.1049/elp2.70101","url":null,"abstract":"The dual three-phase rectifier synchronous generator (DTP-RSG) is commonly used in areas such as electric vehicles, aviation and wind power generation because of its high power supply quality, good electromagnetic compatibility and strong fault-tolerant operation. However, when the load changes suddenly, the voltage at the DTP-RSG terminal fluctuates accordingly, which can negatively affect the overall performance of the power supply system. An electrolytic capacitor serves to store energy and stabilise the output voltage and is therefore commonly employed as a filter capacitor in DC power supply systems. The parasitic parameters, including the equivalent series resistance (ESR) and equivalent series inductance (ESL) of the filter capacitor, significantly influence the system's output. For this reason, this paper adopts an agent-aided optimisation method based on heuristic optimisation and intelligent algorithms to study the influence of the filter capacitor and its parasitic parameters on the output performance of the DTP-RSG. The objective is to reduce the difference between transient voltage and steady-state voltage, reduce the DC voltage ripple coefficient and improve efficiency to find the most suitable filter capacitor. Through experimental verification, the transient voltage mathematical model established in this paper has high accuracy. The results of the agent-aided optimisation method demonstrate that considering the parasitic parameters of the filter capacitor is crucial for analysing the output performance of the DTP-RSG, and selecting an appropriate filter capacitor can improve the power quality of the entire DC power system.","PeriodicalId":13352,"journal":{"name":"Iet Electric Power Applications","volume":"19 1","pages":""},"PeriodicalIF":1.5,"publicationDate":"2025-09-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ietresearch.onlinelibrary.wiley.com/doi/epdf/10.1049/elp2.70101","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145129254","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Enhanced Automated Condition Assessment of Induction Motor Bearings: A Novel Approach Using Matrix Pencil Mean Frequency Signal Processing and Multilayer Perceptron Neural Networks 基于矩阵铅笔平均频率信号处理和多层感知器神经网络的异步电机轴承状态自动评估方法

IF 1.5 4区工程技术

Iet Electric Power Applications Pub Date : 2025-09-22 DOI: 10.1049/elp2.70103

Abderrzak Laib, Saida Dahmane, Yacine Terriche, Chun-Lien Su, Hafiz Ahmed, Zakaria Chedjara

{"title":"Enhanced Automated Condition Assessment of Induction Motor Bearings: A Novel Approach Using Matrix Pencil Mean Frequency Signal Processing and Multilayer Perceptron Neural Networks","authors":"Abderrzak Laib, Saida Dahmane, Yacine Terriche, Chun-Lien Su, Hafiz Ahmed, Zakaria Chedjara","doi":"10.1049/elp2.70103","DOIUrl":"10.1049/elp2.70103","url":null,"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 the motor's life cycle with proactive, condition-specific maintenance. Furthermore, the vibration signal analysis offers the advantage of identifying the health status of rotating machinery as a whole, as well as its individual components. This paper presents an innovative solution for the automated health assessment of a critical induction motor component: the bearing. Our approach uses the matrix pencil method for signal processing and health signature generation, combined with a multilayer perceptron neural network to detect health conditions from the resulting health signature characteristics. Initially, the matrix pencil is applied to the vibration signal to identify the mean frequency characteristics. This vector provides a holistic view of the signal’s inherent features and transforms its frequency characteristics into a visual spectrum, resulting in improved induction motor bearing fault condition monitoring. Subsequently, the output from the matrix pencil mean frequency analysis is processed by a multilayer perceptron neural classifier, chosen for its low computational cost and high classification accuracy. Experimental validation demonstrates a 100% fault classification rate and automatic identification of defective components. Comprehensive validation further confirms the method’s robustness and feasibility for induction motor bearing fault detection compared to other recently methods.","PeriodicalId":13352,"journal":{"name":"Iet Electric Power Applications","volume":"19 1","pages":""},"PeriodicalIF":1.5,"publicationDate":"2025-09-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ietresearch.onlinelibrary.wiley.com/doi/epdf/10.1049/elp2.70103","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145111340","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Optimisation of a Modified SynRM Based on a New Design Strategy Considering Line-Start Capability and Improved Power Factor 考虑线路启动能力和改进功率因数的改进SynRM优化设计策略

IF 1.5 4区工程技术

Iet Electric Power Applications Pub Date : 2025-09-20 DOI: 10.1049/elp2.70102

Seyed Reza Mousavi-Aghdam, Seyed Abbas Azimi, Farzad Sedaghati

{"title":"Optimisation of a Modified SynRM Based on a New Design Strategy Considering Line-Start Capability and Improved Power Factor","authors":"Seyed Reza Mousavi-Aghdam, Seyed Abbas Azimi, Farzad Sedaghati","doi":"10.1049/elp2.70102","DOIUrl":"10.1049/elp2.70102","url":null,"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 important effect on the static performance. In the proposed SynRM, the rotor bars are designed for the flux barriers, and some additional bars are considered near the q-axis. The PM arrangement is changed so that some additional PMs are considered. In the proposed design strategy, two optimisation procedures called local and global optimisation phases are considered. In the first step, genetic algorithm (GA) is used to obtain optimal geometric parameters for some performance metrics. In the next step, the global response surface method is applied to combine the mentioned metrics and determine the globally optimal design for both stator configurations. In the last optimisation process, improvement of line-start capability and power factor are proposed as the main goals. The analysis results show that the design proposed by SynRM has better performance in terms of line-start capability and power factor. Experimental validation of the proposed SynRM is also presented to confirm the accuracy of the finite element method (FEM) simulation.","PeriodicalId":13352,"journal":{"name":"Iet Electric Power Applications","volume":"19 1","pages":""},"PeriodicalIF":1.5,"publicationDate":"2025-09-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ietresearch.onlinelibrary.wiley.com/doi/epdf/10.1049/elp2.70102","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145101989","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Correction to ‘Modelling and Simulation of a Novel Axial-Flux Permanent Magnet-Hysteresis Motor Comparing Different Disc Structures’ 对“一种新型轴向磁通永磁磁滞电机的建模与仿真比较不同圆盘结构”的修正

IF 1.5 4区工程技术

Iet Electric Power Applications Pub Date : 2025-09-19 DOI: 10.1049/elp2.70089

引用次数: 0

Analysis of Electromagnetic Field and Heat Transfer in the End Region of Variable-Speed Pumped Storage Generator-Motor at Different Speeds 变速抽水蓄能发电机-电机在不同转速下端区电磁场及传热分析

IF 1.5 4区工程技术

Iet Electric Power Applications Pub Date : 2025-09-18 DOI: 10.1049/elp2.70091

Jichao Han, Haiming Qi, Wenshuai Geng, Yutian Sun, Baojun Ge

{"title":"Analysis of Electromagnetic Field and Heat Transfer in the End Region of Variable-Speed Pumped Storage Generator-Motor at Different Speeds","authors":"Jichao Han, Haiming Qi, Wenshuai Geng, Yutian Sun, Baojun Ge","doi":"10.1049/elp2.70091","DOIUrl":"10.1049/elp2.70091","url":null,"abstract":"Large variable-speed pumped storage generator-motors (VSPSGMs) offer superior speed adaptability and rapid adjustment capabilities for both active and reactive power. However, their rotor AC excitation systems pose significant challenges for electromagnetic design and ventilation cooling due to variable operational conditions. In this paper, the electromagnetic parameters, ventilation cooling system and heat transfer mechanism of 10 MW VSPSGM are studied. Losses in end components of VSPSGM are obtained at different locations. Fluid velocity distributions are analysed under different speeds. A coupled fluid-thermal model is developed for the end region of the 10 MW VSPSGM. Complex fluid flow and temperature distribution of end components in the VSPSGM are studied and compared at different speeds. The location of the highest temperature point is obtained. The calculated results are compared with the experimental test values. The ventilation cooling system design and accuracy of the calculation method are verified.","PeriodicalId":13352,"journal":{"name":"Iet Electric Power Applications","volume":"19 1","pages":""},"PeriodicalIF":1.5,"publicationDate":"2025-09-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ietresearch.onlinelibrary.wiley.com/doi/epdf/10.1049/elp2.70091","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145101853","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0