CES Transactions on Electrical Machines and Systems最新文献_第2页

A Detailed Thermal Analysis for Performance Improvement of Axial Transverse-Flux-Switching PM Wind Turbine Generator 轴向横磁通开关永磁风力发电机组性能改进的详细热分析

CES Transactions on Electrical Machines and Systems Pub Date : 2025-06-18 DOI: 10.30941/CESTEMS.2025.00017

A. Ghaheri;A. Zarghani;E. Afjei;H. Torkaman

{"title":"A Detailed Thermal Analysis for Performance Improvement of Axial Transverse-Flux-Switching PM Wind Turbine Generator","authors":"A. Ghaheri;A. Zarghani;E. Afjei;H. Torkaman","doi":"10.30941/CESTEMS.2025.00017","DOIUrl":"https://doi.org/10.30941/CESTEMS.2025.00017","url":null,"abstract":"The efficiency of energy conversion from mechanical to electrical in AC generators is not entirely optimal, as power losses are converted into heat. Accurate thermal modeling and temperature measurement of advanced electric machines with complex structures are mandatory to confirm their reliability and safe operation. In a unique axial transverse flux switching permanent magnet (ATFSPM) generator, due to its high power density, large stray loss from leakage flux, compact topology, and totally enclosed structure, thermal analysis is of paramount significance. In this paper, thermal modeling and analysis of ATFSPM are carried out in detail using a three-dimensional (3D) finite element analysis (FEA) to evaluate the thermal condition for a precise performance improvement. To begin, all loss sources are accurately derived using 3-D FEA and analytical methods, taking into account the temperature dependence of material properties, and then losses are coupled to the thermal model as heat sources. Afterward, aiming for realistic thermal modelling, the convection heat transfer in the different regions of internal and external areas as well as thin layers of interface gaps between components are all considered. In addition, the prototype of ATFSPM is supplied to validate the accuracy of 3-D FEA temperature prediction. Furthermore, a novel technique is carried out to effectively improve thermal performance, enhance the efficiency, and limit hot-spot temperatures. The steady-state and transient temperature results demonstrate the high accuracy of the thermal modeling, enhance the secure operation of the ATFSPM, and facilitate increased loading utilizing the proposed technique.","PeriodicalId":100229,"journal":{"name":"CES Transactions on Electrical Machines and Systems","volume":"9 2","pages":"212-223"},"PeriodicalIF":0.0,"publicationDate":"2025-06-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=11042890","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144536649","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Fast and Accurate Prediction of Electromagnetic and Temperature Fields for SPMSM Equipped with Unequally Thick Magnetic Poles 非等厚磁极永磁同步电机电磁场和温度场的快速准确预测

CES Transactions on Electrical Machines and Systems Pub Date : 2025-06-01 DOI: 10.30941/CESTEMS.2025.00020

Feng Liu;Xiuhe Wang;Lingling Sun;Hongye Wei

{"title":"Fast and Accurate Prediction of Electromagnetic and Temperature Fields for SPMSM Equipped with Unequally Thick Magnetic Poles","authors":"Feng Liu;Xiuhe Wang;Lingling Sun;Hongye Wei","doi":"10.30941/CESTEMS.2025.00020","DOIUrl":"https://doi.org/10.30941/CESTEMS.2025.00020","url":null,"abstract":"With the continuous upgrading of traditional manufacturing industries and the rapid rise of emerging technology fields, the performance requirements for the permanent magnet synchronous motors (PMSMs) have become higher and higher. The importance of fast and accurate electromagnetic thermal coupling analysis of such motors becomes more and more prominent. In view of this, the surface-mounted PMSM (SPMSM) equipped with unequally thick magnetic poles is taken as the main object and its electromagnetic thermal coupling analytical model (ETcAM) is investigated. First, the electromagnetic analytical model (EAM) is studied based on the modified subdomain method. It realizes the fast calculation of key electromagnetic characteristics. Subsequently, the 3D thermal analytical model (TAM) is developed by combining the EAM, the lumped parameter thermal network method (LPTNM), and the partial differential equation of heat flux. It realizes the fast calculation of key thermal characteristics in 3D space. Further, the information transfer channel between EAM and TAM is built with reference to the intrinsic connection between electromagnetic field and temperature field. Thereby, the novel ETcAM is proposed to realize the fast and accurate prediction of electromagnetic and temperature fields. Besides, ETcAM has a lot to commend it. One is that it well accounts for the complex structure, saturation, and heat exchange behavior. Second, it saves a lot of computer resources. It offers boundless possibilities for initial design, scheme evaluation, and optimization of motors. Finally, the validity, accuracy, and practicality of this study are verified by simulation and experiment.","PeriodicalId":100229,"journal":{"name":"CES Transactions on Electrical Machines and Systems","volume":"9 2","pages":"199-211"},"PeriodicalIF":0.0,"publicationDate":"2025-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=11066211","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144536460","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Inter-Turn Short-Circuit Fault Diagnosis and Severity Estimation for Five-Phase PMSM 五相永磁同步电机匝间短路故障诊断与严重程度估计

CES Transactions on Electrical Machines and Systems Pub Date : 2025-06-01 DOI: 10.30941/CESTEMS.2025.00019

Yijia Huang;Wentao Huang;Tinglong Pan;Dezhi Xu

{"title":"Inter-Turn Short-Circuit Fault Diagnosis and Severity Estimation for Five-Phase PMSM","authors":"Yijia Huang;Wentao Huang;Tinglong Pan;Dezhi Xu","doi":"10.30941/CESTEMS.2025.00019","DOIUrl":"https://doi.org/10.30941/CESTEMS.2025.00019","url":null,"abstract":"In this article, an inter-turn short-circuit (ITSC) fault diagnosis and severity estimation method based on extended state observer (ESO) and convolutional neural network (CNN) is proposed for five-phase permanent magnet synchronous motor (PMSM) drives. The relationship between fault parameters and motor parameters is analyzed and the equivalent model of ITSC faults in the natural reference frame is accordingly derived. To achieve fault detection and location, the short-circuit turn ratio and short-circuit current are integrated as the fault diagnosis index. According to the model of the shortcircuit current, an ESO is designed for the estimation of the fault diagnosis index. Further, the sensitivity analysis among fault parameters is conducted to evaluate the short-circuit turn ratio and the short-circuit resistance. Subsequently, the postfault current, back electromotive force, electrical angular velocity, q<inf>1</inf>-axis current reference and the fault diagnosis index are selected as the input signals of CNN to estimate the short-circuit turn ratio. This approach not only resolves parameter coupling challenges but also provides a quantitative assessment of fault severity. Finally, simulations and experiments under different operating points validate the effectiveness of the proposed method.","PeriodicalId":100229,"journal":{"name":"CES Transactions on Electrical Machines and Systems","volume":"9 2","pages":"224-233"},"PeriodicalIF":0.0,"publicationDate":"2025-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=11066212","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144536367","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Content 内容

CES Transactions on Electrical Machines and Systems Pub Date : 2025-06-01

引用次数: 0

Recent Advances in Arc-Linear Motors for Direct-Drive Applications: A Review 直驱用直线电弧电机的研究进展

CES Transactions on Electrical Machines and Systems Pub Date : 2025-06-01 DOI: 10.30941/CESTEMS.2025.00018

Zhenbao Pan;Jiwen Zhao;Shuhua Fang;Jinhao Cai;Qiangren Xu

引用次数: 0

Fault Diagnosis Method for Open-Circuit Faults in NPC Three-Level Inverter Based on WKCNN 基于WKCNN的NPC三电平逆变器开路故障诊断方法

CES Transactions on Electrical Machines and Systems Pub Date : 2025-03-23 DOI: 10.30941/CESTEMS.2025.00012

Guozheng Zhang;Menghui Li;Xin Gu;Wei Chen

{"title":"Fault Diagnosis Method for Open-Circuit Faults in NPC Three-Level Inverter Based on WKCNN","authors":"Guozheng Zhang;Menghui Li;Xin Gu;Wei Chen","doi":"10.30941/CESTEMS.2025.00012","DOIUrl":"https://doi.org/10.30941/CESTEMS.2025.00012","url":null,"abstract":"With the increasing demand for high reliability and availability in power conversion equipment within power electronics systems, the fault diagnosis of neutral-point-clamped (NPC) three-level inverters has garnered widespread attention. To address the challenges of fault feature extraction, this article proposes an end-to-end diagnostic approach based on a wavelet kernel convolutional neural network (WKCNN), capable of extracting multi-scale features from current signals to significantly enhance diagnostic accuracy. This method directly uses raw three-phase current signals as input, applying wavelet kernel convolution to automatically capture frequency-domain fault features, combined with a Softmax classifier optimized by the Adam algorithm to achieve fault diagnosis for NPC three-level inverters. Experimental results under various operating conditions demonstrate that this approach maintains robust diagnostic accuracy across multiple fault scenarios, with comparative analysis further confirming its advantages in diagnostic efficiency and performance over traditional machine learning and other deep learning methods.","PeriodicalId":100229,"journal":{"name":"CES Transactions on Electrical Machines and Systems","volume":"9 2","pages":"234-245"},"PeriodicalIF":0.0,"publicationDate":"2025-03-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=11014611","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144536328","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Additional Magnetic Field of Dual-Parallel Rotor Permanent Magnet Synchronous Motor and its Influence on Electromagnetic Torque 双并联转子永磁同步电机附加磁场及其对电磁转矩的影响

CES Transactions on Electrical Machines and Systems Pub Date : 2025-03-23 DOI: 10.30941/CESTEMS.2025.00015

Yang Chen;Dajun Tao;Baojun Ge

{"title":"Additional Magnetic Field of Dual-Parallel Rotor Permanent Magnet Synchronous Motor and its Influence on Electromagnetic Torque","authors":"Yang Chen;Dajun Tao;Baojun Ge","doi":"10.30941/CESTEMS.2025.00015","DOIUrl":"https://doi.org/10.30941/CESTEMS.2025.00015","url":null,"abstract":"The coupling effect of dual-parallel rotor connected stator permanent magnet synchronous motor not only affects the magnetic field in the coupling area, but also generates an additional magnetic field in the uncoupled area. The characteristics of the additional magnetic field and its influence on electromagnetic torque are studied in this paper. The topology and parameters of motor are described briefly. The existence of additional magnetic field is proved by the simulation models under two boundary conditions, and its characteristics and source are analyzed. The analytical model is established, and the influence of key parameters on the additional magnetic field is discussed. On this basis, the influence of the additional magnetic field on the electromagnetic torque of the motor is studied, and the analytical expression of the additional torque is constructed. The fluctuation rule is analyzed, and the additional magnetic field separation model is proposed. The theoretical analysis and simulation results reveal and improve the internal mechanism of reducing motor torque ripple by optimizing the duty angle and coupling distance. Finally, a prototype test platform is built to verify the correctness of the proposed theory and the accuracy of the simulation model.","PeriodicalId":100229,"journal":{"name":"CES Transactions on Electrical Machines and Systems","volume":"9 2","pages":"189-198"},"PeriodicalIF":0.0,"publicationDate":"2025-03-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=11014610","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144536461","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","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 Sensorless Control of Switched Reluctance Motors Using Inertial Phase-Locked Loop for Extended Speed Range 基于惯性锁相环的开关磁阻电机无传感器控制扩展速度范围

CES Transactions on Electrical Machines and Systems Pub Date : 2025-03-23 DOI: 10.30941/CESTEMS.2025.00013

Zifeng Chen;Xijian Lin;Huayu Ji;Zehua Li;Hang Zhao;Dianxun Xiao

引用次数: 0

A Robustness Evaluation Method for the Robust Control of Electrical Drive Systems Based on Six-Sigma Methodology 基于六西格玛方法的电力传动系统鲁棒控制鲁棒性评价方法

CES Transactions on Electrical Machines and Systems Pub Date : 2025-03-23 DOI: 10.30941/CESTEMS.2025.00011

Nabil Farah;Gang Lei;Jianguo Zhu;Youguang Guo

{"title":"A Robustness Evaluation Method for the Robust Control of Electrical Drive Systems Based on Six-Sigma Methodology","authors":"Nabil Farah;Gang Lei;Jianguo Zhu;Youguang Guo","doi":"10.30941/CESTEMS.2025.00011","DOIUrl":"https://doi.org/10.30941/CESTEMS.2025.00011","url":null,"abstract":"Numerous uncertainties in practical production and operation can seriously affect the drive performance of permanent magnet synchronous machines (PMSMs). Various robust control methods have been developed to mitigate or eliminate the effects of these uncertainties. However, the robustness to uncertainties of electrical drive systems has not been clearly defined. No systemic procedures have been proposed to evaluate a control system's robustness (how robust it is). This paper proposes a systemic method for evaluating control systems' robustness to uncertainties. The concept and fundamental theory of robust control are illustrated by considering a simple uncertain feedback control system. The effects of uncertainties on the control performance and stability are analyzed and discussed. The concept of design for six-sigma (a robust design method) is employed to numerically evaluate the robustness levels of control systems. To show the effectiveness of the proposed robustness evaluation method, case studies are conducted for second-order systems, DC motor drive systems, and PMSM drive systems. Besides the conventional predictive control of PMSM drive, three different robust predictive control methods are evaluated in terms of two different parametric uncertainty ranges and three application requirements against parametric uncertainties.","PeriodicalId":100229,"journal":{"name":"CES Transactions on Electrical Machines and Systems","volume":"9 2","pages":"131-145"},"PeriodicalIF":0.0,"publicationDate":"2025-03-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=11014606","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144536370","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Recent Development of Aircraft Electric Propulsion System: A Technical Review 飞机电力推进系统的最新发展：技术综述

CES Transactions on Electrical Machines and Systems Pub Date : 2025-03-18 DOI: 10.30941/CESTEMS.2025.00004

Wei Chen;Yexin Yan;Yang Qi;Ming Huang;Weilin Li

{"title":"Recent Development of Aircraft Electric Propulsion System: A Technical Review","authors":"Wei Chen;Yexin Yan;Yang Qi;Ming Huang;Weilin Li","doi":"10.30941/CESTEMS.2025.00004","DOIUrl":"https://doi.org/10.30941/CESTEMS.2025.00004","url":null,"abstract":"The technology of electric propulsion aircraft (EPA) represents an important direction and an advanced stage in the development of aviation electrification. It is a key pathway for green development in aviation industry and can significantly enhance the energy efficiency of aircraft propulsion system. Electric motor is the most critical electromechanical energy conversion component in an aircraft electric propulsion system (EPS). High-performance electric motors, power electronic converters and EPS control form the foundation of the EPA. This paper provides an overview of the characteristics of electric motors for EPA, analyzes the inverter topologies of EPSs, and reviews ongoing EPA projects. The article highlights the latest advancements in three types of motors: superconducting motors (SCMs), permanent magnet synchronous motors (PMSMs), and induction motors (IMs). It summarizes the control system architectures of current EPA initiatives and, building on this foundation, proposes future research directions for EPSs. These include cutting-edge areas such as high-performance motors and advanced manufacturing technologies, GaN- or SiC- based inverter integration and innovation, electric propulsion control systems, and optimization of wiring systems.","PeriodicalId":100229,"journal":{"name":"CES Transactions on Electrical Machines and Systems","volume":"9 1","pages":"115-130"},"PeriodicalIF":0.0,"publicationDate":"2025-03-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=10932751","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143748947","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0