CES Transactions on Electrical Machines and Systems最新文献_第10页

Performance and Safety Improvement of Induction Motors Based on Testing and Evaluation Standards 基于测试和评估标准提高感应电机的性能和安全性

CES Transactions on Electrical Machines and Systems Pub Date : 2024-09-01 DOI: 10.30941/CESTEMS.2024.00018

Nkosinathi S. Khumalo;Ntombizotwa P. Memane;Udochukwu B. Akuru

{"title":"Performance and Safety Improvement of Induction Motors Based on Testing and Evaluation Standards","authors":"Nkosinathi S. Khumalo;Ntombizotwa P. Memane;Udochukwu B. Akuru","doi":"10.30941/CESTEMS.2024.00018","DOIUrl":"https://doi.org/10.30941/CESTEMS.2024.00018","url":null,"abstract":"The induction motor, which converts electrical energy into mechanical energy, has been recognized as the cornerstone of industrialization. The rotor of an induction motor can be either a squirrel cage rotor or a wound-type rotor, both existing as magnetless topologies. Three-phase squirrel cage induction motors are frequently utilized in industrial drives because they are dependable, have high starting torque, are self-starting and affordable. Single-phase induction motors, on the other hand, are commonly used for small loads such as domestic appliances in form of modest fans, pumps and electric power tools. In South Africa, there have been reports of fires and explosions resulting in live and property loss because of induction motors that have not been thoroughly tested or are incorrectly labelled in terms of ratings, electrical safety and performance. The goal of this study is targeted at preventing end-user injuries and failures caused by non-compliant induction motors, by evaluating locally manufactured/imported induction motors based on tests and evaluation from standards (IEC and SANS). The study is conducted using experimental procedures at the Explosion Prevention Technology and Rotating Machines (EPT and RM) laboratory, South African Bureau of Standards (SABS), South Africa. The main finding from the study shows differences in the nameplate characteristics of various induction motors which could have detrimental effects such as production and operational downtime in their end-use industries, at later stages.","PeriodicalId":100229,"journal":{"name":"CES Transactions on Electrical Machines and Systems","volume":"8 3","pages":"310-318"},"PeriodicalIF":0.0,"publicationDate":"2024-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=10702521","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142368462","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}

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Content 内容

CES Transactions on Electrical Machines and Systems Pub Date : 2024-09-01

引用次数: 0

Five-Phase Synchronous Reluctance Machines Equipped with a Novel Type of Fractional Slot Winding 配备新型分数槽绕组的五相同步电感机

CES Transactions on Electrical Machines and Systems Pub Date : 2024-08-20 DOI: 10.30941/CESTEMS.2024.00029

S. M. Taghavi Araghi;A. Kiyoumarsi;B. Mirzaeian Dehkordi

{"title":"Five-Phase Synchronous Reluctance Machines Equipped with a Novel Type of Fractional Slot Winding","authors":"S. M. Taghavi Araghi;A. Kiyoumarsi;B. Mirzaeian Dehkordi","doi":"10.30941/CESTEMS.2024.00029","DOIUrl":"https://doi.org/10.30941/CESTEMS.2024.00029","url":null,"abstract":"Multi-phase machines are so attractive for electrical machine designers because of their valuable advantages such as high reliability and fault tolerant ability. Meanwhile, fractional slot concentrated windings (FSCW) are well known because of short end winding length, simple structure, field weakening sufficiency, fault tolerant capability and higher slot fill factor. The five-phase machines equipped with FSCW, are very good candidates for the purpose of designing motors for high reliable applications, like electric cars, major transporting buses, high speed trains and massive trucks. But, in comparison to the general distributed windings, the FSCWs contain high magnetomotive force (MMF) space harmonic contents, which cause unwanted effects on the machine ability, such as localized iron saturation and core losses. This manuscript introduces several new five-phase fractional slot winding layouts, by the means of slot shifting concept in order to design the new types of synchronous reluctance motors (SynRels). In order to examine the proposed winding's performances, three sample machines are designed as case studies, and analytical study and finite element analysis (FEA) is used for validation.","PeriodicalId":100229,"journal":{"name":"CES Transactions on Electrical Machines and Systems","volume":"8 3","pages":"264-273"},"PeriodicalIF":0.0,"publicationDate":"2024-08-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=10640368","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142368295","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

Open Winding-Permanent Magnet/Magnet Reluctance Hybrid Rotor Double Stator Synchronous Motor SVPWM Control 开式绕组-永磁/磁阻混合转子双定子同步电机的SVPWM控制

CES Transactions on Electrical Machines and Systems Pub Date : 2024-08-20 DOI: 10.30941/CESTEMS.2024.00031

Yufeng Pang;Shi Jin;Wuhen Jin;Siyang Yu

{"title":"Open Winding-Permanent Magnet/Magnet Reluctance Hybrid Rotor Double Stator Synchronous Motor SVPWM Control","authors":"Yufeng Pang;Shi Jin;Wuhen Jin;Siyang Yu","doi":"10.30941/CESTEMS.2024.00031","DOIUrl":"https://doi.org/10.30941/CESTEMS.2024.00031","url":null,"abstract":"Coal mine conveyor belt and other low-speed large torque system, the torque density and torque stability of the motor requirements are higher, permanent magnet / magnet reluctance hybrid rotor double stator synchronous motor (PM/MRHRDSSM) is just adapted to this requirement, however, the traditional close winding single inverter vector control system control PM/MRHRDSSM provides large torque ripple, high speed fluctuation and large total harmonic distortion (THD) of the current, difficult to be used in actual production and life, this paper proposes a large torque open winding-permanent magnet / magnet reluctance hybrid rotor double stator synchronous motor(OW-PM/MRHRDSSM) based on SVPWM dual inverter control strategy, and analysis of open winding double inverter structure, and its voltage vector mathematical model, using the existing two-level inverter as a basis, the bilateral inverter separately discussed its role and control method, as well as the decomposition method of synthetic voltage vector and the inverter device in the small sector on-time, the end of this paper through simulation to compare the traditional close winding single inverter vector control system control PM/MRHRDSSM and the large torque OW-PM/MRHRDSSM based on SVPWM dual inverter control strategy to prove the effectiveness of the proposed method in reducing torque ripple, speed fluctuation and THD of current during motor operation.","PeriodicalId":100229,"journal":{"name":"CES Transactions on Electrical Machines and Systems","volume":"8 4","pages":"426-435"},"PeriodicalIF":0.0,"publicationDate":"2024-08-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=10640366","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142905920","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

Capacitorless Solid-State Power Filter for Single-Phase DC-AC Converters 用于单相 DC-AC 转换器的无电容固态电源滤波器

CES Transactions on Electrical Machines and Systems Pub Date : 2024-08-20 DOI: 10.30941/CESTEMS.2024.00033

Haitham Kanakri;Euzeli C. Dos Santos

{"title":"Capacitorless Solid-State Power Filter for Single-Phase DC-AC Converters","authors":"Haitham Kanakri;Euzeli C. Dos Santos","doi":"10.30941/CESTEMS.2024.00033","DOIUrl":"https://doi.org/10.30941/CESTEMS.2024.00033","url":null,"abstract":"Converters rely on passive filtering as a crucial element due to the high-frequency operational characteristics of power electronics. Traditional filtering methods involve a dual inductor-capacitor (LC) cell or an inductor-capacitor-inductor (LCL) T-circuit. However, capacitors are susceptible to wear-out mechanisms and failure modes. Nevertheless, the necessity for monitoring and regular replacement adds to an elevated cost of ownership for such systems. The utilization of an active output power filter can be used to diminish the dimensions of the LC filter and the electrolytic dc-link capacitor, even though the inclusion of capacitors remains an indispensable part of the system. This paper introduces capacitorless solid-state power filter (SSPF) for single-phase dc-ac converters. The proposed configuration is capable of generating a sinusoidal ac voltage without relying on capacitors. The proposed filter, composed of a planar transformer and an H-bridge converter operating at high frequency, injects voltage harmonics to attain a sinusoidal output voltage. The design parameters of the planar transformer are incorporated, and the impact of magnetizing and leakage inductances on the operation of the SSPF is illustrated. Theoretical analysis, supported by simulation and experimental results, are provided for a design example for a single-phase system. The total harmonic distortion observed in the output voltage is well below the IEEE 519 standard. The system operation is experimentally tested under both steady-state and dynamic conditions. A comparison with existing technology is presented, demonstrating that the proposed topology reduces the passive components used for filtering.","PeriodicalId":100229,"journal":{"name":"CES Transactions on Electrical Machines and Systems","volume":"8 3","pages":"367-377"},"PeriodicalIF":0.0,"publicationDate":"2024-08-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=10640369","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142368502","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

Modeling the System for Hybrid Renewable Energy Using Highly Efficient Converters and Generator 使用高效变流器和发电机的混合可再生能源系统建模

CES Transactions on Electrical Machines and Systems Pub Date : 2024-08-20 DOI: 10.30941/CESTEMS.2024.00032

Tefera Kitaba

引用次数: 0

Rare-Earth Magnet Free Flux-Switching Generator for Wind Turbines in Micro-Grids: A Review 用于微型电网风力涡轮机的无稀土磁通开关发电机：综述

CES Transactions on Electrical Machines and Systems Pub Date : 2024-07-18 DOI: 10.30941/CESTEMS.2024.00023

Tugberk Ozmen;Batı Eren Ergun;Mehmet Onur Gulbahce;Nevzat Onat

{"title":"Rare-Earth Magnet Free Flux-Switching Generator for Wind Turbines in Micro-Grids: A Review","authors":"Tugberk Ozmen;Batı Eren Ergun;Mehmet Onur Gulbahce;Nevzat Onat","doi":"10.30941/CESTEMS.2024.00023","DOIUrl":"https://doi.org/10.30941/CESTEMS.2024.00023","url":null,"abstract":"In traditional electricity generation plants, large powerful synchronous, induction, and direct current generators were used. With the proliferation of microgrids focused on electricity generation from renewable energy sources in today's power grids, studies have been conducted on different types of generators. Instead of the traditional generator architecture, generators with brushless structures, particularly those utilizing magnets for excitation, have found broad applications. Flux-switching generators (FSGs) are innovative types owing to their robust structure, active stator design, and high power density capabilities. However, designs have typically relied on rare-earth element magnets. Rare-earth magnets possess negative characteristics such as price uncertainty, the potential risk of scarcity in the future, and limited geographical production, leading to research on FSGs that do not depend on rare-earth magnets. This study comprehensively examines FSGs that do not use rare-earth element magnets. The study delves into the usage areas, operational mechanisms, structural diversities, and counterparts in the literature of these generators.","PeriodicalId":100229,"journal":{"name":"CES Transactions on Electrical Machines and Systems","volume":"8 3","pages":"295-309"},"PeriodicalIF":0.0,"publicationDate":"2024-07-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=10604779","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142368477","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}

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A Design of Modular Interior Ferrite Magnet Flux-Switching Linear Motor for Track Transport 用于轨道运输的模块化内部铁氧体磁铁磁通开关直线电机的设计

CES Transactions on Electrical Machines and Systems Pub Date : 2024-07-18 DOI: 10.30941/CESTEMS.2024.00028

Zongsheng Zhang;Hao Wang;Hong Chen

{"title":"A Design of Modular Interior Ferrite Magnet Flux-Switching Linear Motor for Track Transport","authors":"Zongsheng Zhang;Hao Wang;Hong Chen","doi":"10.30941/CESTEMS.2024.00028","DOIUrl":"https://doi.org/10.30941/CESTEMS.2024.00028","url":null,"abstract":"A novel topology of modular ferrite magnet flux-switching linear motor (FMFSLM) use for track transport is presented in this paper, which enables more ferrite magnets to be inserted into the primary iron core. The motor has a significant low-cost advantage in long-distance linear drive. The proposed FMFSLM's structure and working principle were introduced. Further, the thrust force expression of the motor was established. The thrust force components triggering thrust force ripple were investigated, and their expressions can be obtained according to the inductances' Fourier series expressions. Resultantly, the relationship between the harmonics of thrust force and that of self- and mutual inductances was revealed clearly. Based on the relationship, a skewed secondary should be practical to reduce the thrust force ripple. Thus, the effect of employing a skewed secondary to the proposed FMFSLM was investigated, and an optimized skewing span distance was determined. Finite element analysis (FEA) was conducted to validate the exactness of the theoretical analysis. The simulation results indicate that the strategy of suppressing thrust force ripple has a significant effect. Meanwhile, the motor maintains a good efficiency characteristic. The results of the prototype experiment are in good agreement with FEAs, which further verifies the proposed modular interior FMFSLM's practicability.","PeriodicalId":100229,"journal":{"name":"CES Transactions on Electrical Machines and Systems","volume":"8 3","pages":"284-294"},"PeriodicalIF":0.0,"publicationDate":"2024-07-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=10604784","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142368428","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

Dual-Negative-Objective Coordinated Control of Brushless Doubly Fed Induction Generator under Unbalanced Grid Voltage 不平衡电网电压下的无刷双馈感应发电机双负目标协调控制

CES Transactions on Electrical Machines and Systems Pub Date : 2024-07-18 DOI: 10.30941/CESTEMS.2024.00026

Ming Cheng;Zheng Cao;Xiaoming Yan

引用次数: 0

Winding Function Model-Based Performance Evaluation of a PM Transverse Flux Generator for Applications in Direct-Drive Systems 基于绕组功能模型的直驱系统应用永磁横向磁通发电机性能评估

CES Transactions on Electrical Machines and Systems Pub Date : 2024-06-03 DOI: 10.30941/CESTEMS.2024.00013

Mehrage Ghods;Jawad Faiz;Ali A. Pourmoosa

{"title":"Winding Function Model-Based Performance Evaluation of a PM Transverse Flux Generator for Applications in Direct-Drive Systems","authors":"Mehrage Ghods;Jawad Faiz;Ali A. Pourmoosa","doi":"10.30941/CESTEMS.2024.00013","DOIUrl":"https://doi.org/10.30941/CESTEMS.2024.00013","url":null,"abstract":"The magnetic flux in a permanent magnet transverse flux generator (PMTFG) is three-dimensional (3D), therefore, its efficacy is evaluated using 3D magnetic field analysis. Although the 3D finite-element method (FEM) is highly accurate and reliable for machine simulation, it requires a long computation time, which is crucial when it is to be used in an iterative optimization process. Therefore, an alternative to 3D-FEM is required as a rapid and accurate analytical technique. This paper presents an analytical model for PMTFG analysis using winding function method. To obtain the air gap MMF distribution, the excitation magneto-motive force (MMF) and the turn function are determined based on certain assumptions. The magnetizing inductance, flux density, and back-electro-magneto-motive force of the winding are then determined. To assess the accuracy of the proposed method, the analytically calculated parameters of the generator are compared to those obtained by a 3D-FEM. The presented method requires significantly shorter computation time than the 3D-FEM with comparable accuracy.","PeriodicalId":100229,"journal":{"name":"CES Transactions on Electrical Machines and Systems","volume":"8 2","pages":"216-226"},"PeriodicalIF":0.0,"publicationDate":"2024-06-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=10545422","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141494918","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