IEEE Transactions on Magnetics最新文献_第10页

Analytical Calculation of Stray Magnetic Field in Interior Permanent Magnet Synchronous Motor Under Static Eccentricity Considering Nonlinear and Nonuniform Magnetic Saturation 考虑非线性和非均匀磁饱和的内置永磁同步电机静偏心率下杂散磁场解析计算

IF 2.1 3区工程技术

IEEE Transactions on Magnetics Pub Date : 2024-11-22 DOI: 10.1109/TMAG.2024.3504497

Hongwei Cui;Conggan Ma;Yanyan Wang;Xiangyi Li;Yuling He;Zhaojie Shen;Zhaoqi Ji;Puwei Wang

{"title":"Analytical Calculation of Stray Magnetic Field in Interior Permanent Magnet Synchronous Motor Under Static Eccentricity Considering Nonlinear and Nonuniform Magnetic Saturation","authors":"Hongwei Cui;Conggan Ma;Yanyan Wang;Xiangyi Li;Yuling He;Zhaojie Shen;Zhaoqi Ji;Puwei Wang","doi":"10.1109/TMAG.2024.3504497","DOIUrl":"https://doi.org/10.1109/TMAG.2024.3504497","url":null,"abstract":"Nonlinear magnetic saturation occurs in the rotor magnetic bridge area because of the complex rotor structure in the interior permanent magnet synchronous motor (IPMSM), and the degrees of nonlinear magnetic saturation in the rotor region corresponding to different magnetic pole are quite different under the state of the stator-rotor eccentricity, that makes it difficult to calculate the stray magnetic field of the IPMSMs under eccentricity. This article proposes an analytical method of the stray magnetic field in IPMSMs considering influence of asymmetric and nonuniform saturation. First, a dual iteration technique of magnetic saturation is developed to solve the air-gap magnetic field of the IPMSMs under static eccentricity and the effect of eccentricity on the complex relative permeability (CRP) is also considered. Second, extended the air-gap domain vector magnetic potential to the outer air domain using the subdomain method to solve the stray magnetic field under static eccentricity. Then, the effects of different materials, different magnetic bridge structures and different static eccentricities on the no-load leakage coefficient are analyzed. Finally, the effectiveness of the proposed analytical calculation method (ANA) is verified by a special eccentricity simulation device, the computational error is 3.92% compared to the experimental results. The computational speed is improved by 91.3% compared to the finite element method (FEM).","PeriodicalId":13405,"journal":{"name":"IEEE Transactions on Magnetics","volume":"61 1","pages":"1-11"},"PeriodicalIF":2.1,"publicationDate":"2024-11-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142905843","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Electromagnetic Performance Analysis and Multiobjective Optimal Design of a Novel Magnet-Shifted PM Motor for Reducing Torque Ripple 新型移磁永磁电机的电磁性能分析及多目标优化设计

IF 2.1 3区工程技术

IEEE Transactions on Magnetics Pub Date : 2024-11-21 DOI: 10.1109/TMAG.2024.3503655

Yonghua Huang;Daohan Wang;Zhipeng Li;Xinchen Tu;Jun Nie;Xiuhe Wang

引用次数: 0

Exploring Bounds in Complementary Formulations for Electroquasistatics 探索准静电学互补公式的界

IF 2.1 3区工程技术

IEEE Transactions on Magnetics Pub Date : 2024-11-20 DOI: 10.1109/TMAG.2024.3502700

Antonino Vacalebre;Aldi Hoxha;Ruben Specogna

引用次数: 0

Coupled Electromagnetic–Fluid–Thermal Analysis in Large Scale Water–Hydrogen Hydrogen-Cooled Generator-Condenser Under Different Operations

IF 2.1 3区工程技术

IEEE Transactions on Magnetics Pub Date : 2024-11-20 DOI: 10.1109/TMAG.2024.3496759

Weili Li;Yalei Li;Tianhuai Qiao;Chunsun Tian;Mingyang Liu;Yang Xiao

{"title":"Coupled Electromagnetic–Fluid–Thermal Analysis in Large Scale Water–Hydrogen Hydrogen-Cooled Generator-Condenser Under Different Operations","authors":"Weili Li;Yalei Li;Tianhuai Qiao;Chunsun Tian;Mingyang Liu;Yang Xiao","doi":"10.1109/TMAG.2024.3496759","DOIUrl":"https://doi.org/10.1109/TMAG.2024.3496759","url":null,"abstract":"The synchronous generator running under the condenser condition can enhance the dynamic reactive power compensation capability of the new power system. However, the thermal of the generator is an important factor limiting its reactive power compensation ability. This article takes a 350 MW/300 Mvar water-hydrogen-hydrogen cooled generator-condenser as an example. Based on the coupled model of electromagnetic-fluid-thermal, the electromagnetic performance and stator temperature field under multiple working conditions are studied. First, 2-D electromagnetic field-circuit coupling model is built, and the magnetic density under generator-condenser condition is studied; additionally, the loss is used as the boundary condition to work out the thermal field. Second, through the iterative of the global ventilation network of the generator-condenser, the flow and pressure that suit the accuracy requirements are taken as the boundary conditions of the fluid field. Finally, by establishing 3-D fluid-solid coupled model of the stator with full axial half teeth and half slots, the thermal field of the winding, insulation, and water under the generator-condenser condition is analyzed with the finite volume method. This article provides useful references for the design and retrofit of the generator-condenser.","PeriodicalId":13405,"journal":{"name":"IEEE Transactions on Magnetics","volume":"61 2","pages":"1-5"},"PeriodicalIF":2.1,"publicationDate":"2024-11-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143107116","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

A GPU-Accelerated Semi-Implicit Method for Large-Scale Nonlinear Eddy-Current Problems Using Adaptive Time Step Control 基于自适应时间步长控制的gpu加速半隐式大规模非线性涡流问题求解方法

IF 2.1 3区工程技术

IEEE Transactions on Magnetics Pub Date : 2024-11-19 DOI: 10.1109/TMAG.2024.3502313

Bernhard Kähne;Markus Clemens

引用次数: 0

Propagation Characteristics of End-Winding Insulation Fatigue Damage in Variable Frequency Motor Under Multi-Field Coupling 多场耦合下变频电机端绕组绝缘疲劳损伤传播特性研究

IF 2.1 3区工程技术

IEEE Transactions on Magnetics Pub Date : 2024-11-18 DOI: 10.1109/TMAG.2024.3502115

Haijun Zhang;Bangwei Zhang;Jiashun Wang;Haifeng Kong;Guowen Cao

{"title":"Propagation Characteristics of End-Winding Insulation Fatigue Damage in Variable Frequency Motor Under Multi-Field Coupling","authors":"Haijun Zhang;Bangwei Zhang;Jiashun Wang;Haifeng Kong;Guowen Cao","doi":"10.1109/TMAG.2024.3502115","DOIUrl":"https://doi.org/10.1109/TMAG.2024.3502115","url":null,"abstract":"During the operation of large motors fed by inverter, the variable frequency current may affect the stress state of the winding conductor and insulation, which will further affect the propagation characteristics of insulation damage. In this article, the 3-D magnetic-thermal-mechanical coupling damage evolution model is established by using the finite element method (FEM), where the effects of variable frequency current excitation are considered. The complex distribution states of the frequency conversion and periodic stress inside the insulation layer are determined. The stress intensity factor (SIF) and modified Paris equation in fracture mechanics are introduced to describe the influence of frequency (50–350 Hz) on the propagation degree and trend of insulation damage. The fatigue propagation characteristics of motor end insulation damage under multi-field coupling variable frequency stress are quantitatively studied. The final results show that the fatigue growth rate of insulation damage at the knuckle part is affected seriously by the variable frequencies, which reach the maximum at about 200 Hz. The results of this research may provide theoretical references for the detection, diagnosis, and residual life prediction of stator insulation for variable frequency electrical machines.","PeriodicalId":13405,"journal":{"name":"IEEE Transactions on Magnetics","volume":"61 1","pages":"1-4"},"PeriodicalIF":2.1,"publicationDate":"2024-11-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142905764","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Using Magnetic Moment for Field Reconstruction in Accelerator Magnets and Particle Tracking 利用磁矩进行加速器磁体磁场重建和粒子跟踪

IF 2.1 3区工程技术

IEEE Transactions on Magnetics Pub Date : 2024-11-18 DOI: 10.1109/TMAG.2024.3501479

Jie Li;Kedong Wang;Xu Zhang;Kai Wang;Xueqing Yan;Kun Zhu

引用次数: 0

Numerical Analysis of Partial Discharge With Lossy Multi-Dielectric Insulator Forming Migration–Ohmic Model 有耗多介质绝缘子局部放电形成迁移-欧姆模型的数值分析

IF 2.1 3区工程技术

IEEE Transactions on Magnetics Pub Date : 2024-11-15 DOI: 10.1109/TMAG.2024.3498946

Hyemin Kang;Yonghee Kim;Minhee Kim;Se-Hee Lee

{"title":"Numerical Analysis of Partial Discharge With Lossy Multi-Dielectric Insulator Forming Migration–Ohmic Model","authors":"Hyemin Kang;Yonghee Kim;Minhee Kim;Se-Hee Lee","doi":"10.1109/TMAG.2024.3498946","DOIUrl":"https://doi.org/10.1109/TMAG.2024.3498946","url":null,"abstract":"Partial discharge (PD) characteristics were analyzed with a lossy multi-dielectric insulator in air forming a migration-ohmic model by using a fully coupled finite element method. In high voltage direct current (HVDC) or medium voltage direct current (MVDC) systems, electric stress is constantly applied to multi-dielectric insulators resulting in the movement of space or surface charges. The concentration of surface or space charges can cause the PD problem, which degrades the breakdown strength of insulators. To consider this aging effect in dielectric insulators, conductivity in the aged dielectric material. Challenges have emerged in developing a numerical approach for analyzing the discharge behavior with this lossy dielectric material needs to be taken into account. With the difference in material properties forming a migration-ohmic model, one has usually employed Poisson’s equation for charge transport area and the current continuity equation for the lossy dielectric region, respectively, to solve this model. With these different governing equations, the electric scalar potential cannot be solved uniquely. For this reason, therefore, it has been rarely reported to analyze this migration-ohmic model in discharge analysis. To remove this uncertainty of the electric scalar potential, we introduced the current continuity equation incorporating the space charge transport equations for electrons, and positive and negative ions. To validate our numerical setup, first, a unipolar charge transport analysis with the migration-ohmic model is compared with the results from the analytic solution. Then, the temporal surface charge decay is also compared with that from an experiment reported in previous literature. Finally, we conduct a quantitative analysis of the PD patterns, considering the dynamic behavior of the surface and space charge densities within the discharge region.","PeriodicalId":13405,"journal":{"name":"IEEE Transactions on Magnetics","volume":"61 1","pages":"1-4"},"PeriodicalIF":2.1,"publicationDate":"2024-11-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142905837","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Multi-Objective Optimization Design of a Segmented Asymmetric V-Type Interior Permanent Magnet Synchronous Motor 分段非对称v型内置永磁同步电机多目标优化设计

IF 2.1 3区工程技术

IEEE Transactions on Magnetics Pub Date : 2024-11-15 DOI: 10.1109/TMAG.2024.3499366

Luyao Wang;Xueyi Zhang;Jinke Wu;Mingjun Wang;Wenjing Hu;Huihui Geng;Xingzhe Pang

{"title":"Multi-Objective Optimization Design of a Segmented Asymmetric V-Type Interior Permanent Magnet Synchronous Motor","authors":"Luyao Wang;Xueyi Zhang;Jinke Wu;Mingjun Wang;Wenjing Hu;Huihui Geng;Xingzhe Pang","doi":"10.1109/TMAG.2024.3499366","DOIUrl":"https://doi.org/10.1109/TMAG.2024.3499366","url":null,"abstract":"A segmented asymmetric V-type permanent magnet structure is proposed to address the issues of high output torque ripple and large cogging torque in traditional permanent magnet synchronous motors. First, the relationship between the pole-span angles of the segmented asymmetric V-type permanent magnet structure and the output torque, torque ripple, and cogging torque is investigated. Then, the rationality of the segmented asymmetric V-type permanent magnet structure and the correctness of the theoretical derivation are verified by the finite-element simulation. Subsequently, with the optimization objectives of increasing the average output torque of the motor, reducing the torque ripple, and decreasing the cogging torque, the optimal pole-span angle combination of the motor is determined by using the Pareto frontier distribution and the weight analysis method. The effectiveness of the optimized design is finally verified by the finite-element simulation and prototype tests. The results reveal that the segmented asymmetric V-type permanent magnet structure can ensure ample output torque while having low cogging torque and torque ripple in output characteristics.","PeriodicalId":13405,"journal":{"name":"IEEE Transactions on Magnetics","volume":"61 1","pages":"1-12"},"PeriodicalIF":2.1,"publicationDate":"2024-11-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142905726","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Extension of Dowell and Semi-Analytical Homogenization Methods for Time-Domain Analysis of Magnetic Devices 磁器件时域分析的Dowell推广及半解析均匀化方法

IF 2.1 3区工程技术

IEEE Transactions on Magnetics Pub Date : 2024-11-14 DOI: 10.1109/TMAG.2024.3498010

Hajime Igarashi;Qiao Liu;Shuli Yin

引用次数: 0