Pub Date : 2024-09-01DOI: 10.30941/CESTEMS.2024.00043
Runze Jing;Gaolin Wang;Guoqiang Zhang;Dianguo Xu
Due to high power density, high efficiency, and accurate control performance, permanent magnet synchronous motors (PMSMs) have been widely adopted in equipment manufacturing and energy transformation fields. To expand the speed range under finite DC-bus voltage, extensive research on field weakening (FW) control strategies has been conducted. This paper summarizes the major FW control strategies of PMSMs, which are categorized into calculation-based methods, voltage closed-loop control methods, and model predictive control related methods. The existing strategies are analyzed and compared according to performance, robustness, and execution difficulty, which can facilitate the implementation of FW control.
{"title":"Review of Field Weakening Control Strategies of Permanent Magnet Synchronous Motors","authors":"Runze Jing;Gaolin Wang;Guoqiang Zhang;Dianguo Xu","doi":"10.30941/CESTEMS.2024.00043","DOIUrl":"https://doi.org/10.30941/CESTEMS.2024.00043","url":null,"abstract":"Due to high power density, high efficiency, and accurate control performance, permanent magnet synchronous motors (PMSMs) have been widely adopted in equipment manufacturing and energy transformation fields. To expand the speed range under finite DC-bus voltage, extensive research on field weakening (FW) control strategies has been conducted. This paper summarizes the major FW control strategies of PMSMs, which are categorized into calculation-based methods, voltage closed-loop control methods, and model predictive control related methods. The existing strategies are analyzed and compared according to performance, robustness, and execution difficulty, which can facilitate the implementation of FW control.","PeriodicalId":100229,"journal":{"name":"CES Transactions on Electrical Machines and Systems","volume":"8 3","pages":"319-331"},"PeriodicalIF":0.0,"publicationDate":"2024-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=10702450","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142368296","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}
Pub Date : 2024-09-01DOI: 10.30941/CESTEMS.2024.00041
Puqi Ning;Xiaoshuang Hui;Dongrun Li;Yuhui Kang;Jiajun Yang;Chaohui Liu
In the current vehicle electric propulsion systems, the thermal design of power modules heavily relies on empirical knowledge, making it challenging to effectively optimize irregularly arranged Pinfin structures, thereby limiting their performance. This paper aims to review the underlying mechanisms of how irregularly arranged Pinfins influence the thermal characteristics of power modules and introduce collaborative thermal design with DC bus capacitor and motor. Literature considers chip size, placement, coolant flow direction with the goal of reducing thermal resistance of power modules, minimizing chip junction temperature differentials, and optimizing Pinfin layouts. In the first step, algorithms should efficiently generating numerous unique irregular Pinfin layouts to enhance optimization quality. The second step is to efficiently evaluate Pinfin layouts. Simulation accuracy and speed should be ensured to improve computational efficiency. Finally, to improve overall heat dissipation effectiveness, papers establish models for capacitors, motors, to aid collaborative Pinfin optimization. These research outcomes will provide essential support for future developments in high power density motor drive for vehicles.
{"title":"Review of Thermal Design of SiC Power Module for Motor Drive in Electrical Vehicle Application","authors":"Puqi Ning;Xiaoshuang Hui;Dongrun Li;Yuhui Kang;Jiajun Yang;Chaohui Liu","doi":"10.30941/CESTEMS.2024.00041","DOIUrl":"https://doi.org/10.30941/CESTEMS.2024.00041","url":null,"abstract":"In the current vehicle electric propulsion systems, the thermal design of power modules heavily relies on empirical knowledge, making it challenging to effectively optimize irregularly arranged Pinfin structures, thereby limiting their performance. This paper aims to review the underlying mechanisms of how irregularly arranged Pinfins influence the thermal characteristics of power modules and introduce collaborative thermal design with DC bus capacitor and motor. Literature considers chip size, placement, coolant flow direction with the goal of reducing thermal resistance of power modules, minimizing chip junction temperature differentials, and optimizing Pinfin layouts. In the first step, algorithms should efficiently generating numerous unique irregular Pinfin layouts to enhance optimization quality. The second step is to efficiently evaluate Pinfin layouts. Simulation accuracy and speed should be ensured to improve computational efficiency. Finally, to improve overall heat dissipation effectiveness, papers establish models for capacitors, motors, to aid collaborative Pinfin optimization. These research outcomes will provide essential support for future developments in high power density motor drive for vehicles.","PeriodicalId":100229,"journal":{"name":"CES Transactions on Electrical Machines and Systems","volume":"8 3","pages":"332-346"},"PeriodicalIF":0.0,"publicationDate":"2024-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=10702522","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142368475","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}
Pub Date : 2024-09-01DOI: 10.30941/CESTEMS.2024.00039
Zongsheng Zhang;Congcong Guo
This paper proposes and implements a model-free open-loop iterative learning control (ILC) strategy to realize the speed control of the single-phase flux switching motor (FSM) with an asymmetrical rotor. Base on the proposed winding control method, the asymmetrical rotor enables the motor to generate continuous positive torque for positive rotation, and relatively small resistance torque for negative rotation. An initial iteration coefficient and variable iteration coefficient optimized scheme was proposed based on the characteristics of the hardware circuit, thereby forming the model-free strategy. A series of prototype experiments was carried out. Experimental results verify the effectiveness and practicability of the proposed ILC strategy.
{"title":"Model-Free Speed Control of Single-Phase Flux Switching Motor with an Asymmetrical Rotor","authors":"Zongsheng Zhang;Congcong Guo","doi":"10.30941/CESTEMS.2024.00039","DOIUrl":"https://doi.org/10.30941/CESTEMS.2024.00039","url":null,"abstract":"This paper proposes and implements a model-free open-loop iterative learning control (ILC) strategy to realize the speed control of the single-phase flux switching motor (FSM) with an asymmetrical rotor. Base on the proposed winding control method, the asymmetrical rotor enables the motor to generate continuous positive torque for positive rotation, and relatively small resistance torque for negative rotation. An initial iteration coefficient and variable iteration coefficient optimized scheme was proposed based on the characteristics of the hardware circuit, thereby forming the model-free strategy. A series of prototype experiments was carried out. Experimental results verify the effectiveness and practicability of the proposed ILC strategy.","PeriodicalId":100229,"journal":{"name":"CES Transactions on Electrical Machines and Systems","volume":"8 3","pages":"255-263"},"PeriodicalIF":0.0,"publicationDate":"2024-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=10702520","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142368478","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}
Pub Date : 2024-09-01DOI: 10.30941/CESTEMS.2024.10052
As the world embarks on a path toward electrification and strives to achieve net-zero greenhouse gas emissions, the role of electrical machines becomes increasingly vital across various applications. The urgent need for decarbonization and improved energy efficiency has directed attention to rare-earth-free electrical machines as a promising solution. These technologies offer a sustainable alternative to permanent magnet-based machines, which rely heavily on rare earth materials like neodymium and dysprosium. The extraction and processing of these materials result in hazardous by-products that cause significant ecological harm, particularly near mining sites and refineries.
{"title":"Message from Editors","authors":"","doi":"10.30941/CESTEMS.2024.10052","DOIUrl":"https://doi.org/10.30941/CESTEMS.2024.10052","url":null,"abstract":"As the world embarks on a path toward electrification and strives to achieve net-zero greenhouse gas emissions, the role of electrical machines becomes increasingly vital across various applications. The urgent need for decarbonization and improved energy efficiency has directed attention to rare-earth-free electrical machines as a promising solution. These technologies offer a sustainable alternative to permanent magnet-based machines, which rely heavily on rare earth materials like neodymium and dysprosium. The extraction and processing of these materials result in hazardous by-products that cause significant ecological harm, particularly near mining sites and refineries.","PeriodicalId":100229,"journal":{"name":"CES Transactions on Electrical Machines and Systems","volume":"8 3","pages":"241-244"},"PeriodicalIF":0.0,"publicationDate":"2024-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=10702526","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142368479","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}
Pub Date : 2024-09-01DOI: 10.30941/CESTEMS.2024.00018
Nkosinathi S. Khumalo;Ntombizotwa P. Memane;Udochukwu B. Akuru
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.
{"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}
{"title":"Content","authors":"","doi":"","DOIUrl":"https://doi.org/","url":null,"abstract":"","PeriodicalId":100229,"journal":{"name":"CES Transactions on Electrical Machines and Systems","volume":"8 3","pages":"1-1"},"PeriodicalIF":0.0,"publicationDate":"2024-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=10702525","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142368336","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}
Pub Date : 2024-08-20DOI: 10.30941/CESTEMS.2024.00029
S. M. Taghavi Araghi;A. Kiyoumarsi;B. Mirzaeian Dehkordi
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.
{"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}
Pub Date : 2024-08-20DOI: 10.30941/CESTEMS.2024.00033
Haitham Kanakri;Euzeli C. Dos Santos
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.
由于电力电子器件的高频工作特性，转换器依赖于无源滤波这一关键元件。传统的滤波方法包括双电感器-电容器 (LC) 单元或电感器-电容器-电感器 (LCL) T 型电路。然而，电容器容易受到磨损机制和故障模式的影响。不过，由于需要监控和定期更换，此类系统的拥有成本也随之增加。利用有源输出功率滤波器可以减小 LC 滤波器和电解直流链路电容器的尺寸，尽管电容器仍然是系统不可或缺的一部分。本文介绍了用于单相直流-交流转换器的无电容固态功率滤波器（SSPF）。所提出的配置能够在不依赖电容器的情况下产生正弦交流电压。拟议的滤波器由一个平面变压器和一个高频工作的 H 桥转换器组成，可注入电压谐波以获得正弦输出电压。其中包含平面变压器的设计参数，并说明了磁化和漏感对 SSPF 运行的影响。在模拟和实验结果的支持下，对单相系统的设计实例进行了理论分析。在输出电压中观察到的总谐波失真远远低于 IEEE 519 标准。在稳态和动态条件下对系统运行进行了实验测试。与现有技术的比较表明，所提出的拓扑结构减少了用于滤波的无源元件。
{"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}
Pub Date : 2024-08-20DOI: 10.30941/CESTEMS.2024.00032
Tefera Kitaba
High-efficient isolated DC/DC converters with a high-efficiency synchronous reluctance generator (SRG) are the ultimate solutions in DC microgrid systems. The design and modeling of isolated DC/DC converters with the performance of SRG are carried out. On the generator side, reactive and active powers are used as pulse width modulation (PWM) control variables. Further, the flux estimator is used. Three-phase PWM rectifier is used by applying space vector modulation (SVM) with a constant switching frequency for direct power control. Further, the paper also includes the experimental validation of the results. The paper also proposes that highly efficient power converters and synchronous reluctance generators are required to achieve high performance for hybrid renewable energy systems applications.
{"title":"Modeling the System for Hybrid Renewable Energy Using Highly Efficient Converters and Generator","authors":"Tefera Kitaba","doi":"10.30941/CESTEMS.2024.00032","DOIUrl":"https://doi.org/10.30941/CESTEMS.2024.00032","url":null,"abstract":"High-efficient isolated DC/DC converters with a high-efficiency synchronous reluctance generator (SRG) are the ultimate solutions in DC microgrid systems. The design and modeling of isolated DC/DC converters with the performance of SRG are carried out. On the generator side, reactive and active powers are used as pulse width modulation (PWM) control variables. Further, the flux estimator is used. Three-phase PWM rectifier is used by applying space vector modulation (SVM) with a constant switching frequency for direct power control. Further, the paper also includes the experimental validation of the results. The paper also proposes that highly efficient power converters and synchronous reluctance generators are required to achieve high performance for hybrid renewable energy systems applications.","PeriodicalId":100229,"journal":{"name":"CES Transactions on Electrical Machines and Systems","volume":"8 3","pages":"356-366"},"PeriodicalIF":0.0,"publicationDate":"2024-08-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=10640367","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142368427","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}
Pub Date : 2024-07-18DOI: 10.30941/CESTEMS.2024.00023
Tugberk Ozmen;Batı Eren Ergun;Mehmet Onur Gulbahce;Nevzat Onat
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.
{"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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