Pub Date : 2018-09-01DOI: 10.1109/icelmach.2018.8506788
{"title":"Electrical machines for extreme environments","authors":"","doi":"10.1109/icelmach.2018.8506788","DOIUrl":"https://doi.org/10.1109/icelmach.2018.8506788","url":null,"abstract":"","PeriodicalId":292261,"journal":{"name":"2018 XIII International Conference on Electrical Machines (ICEM)","volume":"31 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131030366","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2018-09-01DOI: 10.1109/ICELMACH.2018.8506701
O. Ocak, M. Onsal, M. Aydin
In this paper, two different type interior permanent magnet (IPM) motor designs are proposed for Computer Numerical Control (CNC) milling machine application as spindle motors. An existing surface mounted permanent magnet motor is used as a reference motor. Both spoke type and v-type Interior Permanent Magnet (IPM) motor alternatives are designed and optimized in detail. The results of the two IPM motors are compared with the reference Surface Permanent Magnet (SPM) motor for the same design requirements. Detailed loss analysis are also performed for the desired motor structure at high speeds. A prototype motor is manufactured and initial experimental tests are performed. Detailed comparison between Finite Element Analysis and test data are also presented. It is shown that it is possible to have an optimized IPM motor for such high speed spindle application.
{"title":"Development of a 7.5kW High Speed Interior Permanent Magnet Synchronous Spindle Motor for CNC Milling Machine","authors":"O. Ocak, M. Onsal, M. Aydin","doi":"10.1109/ICELMACH.2018.8506701","DOIUrl":"https://doi.org/10.1109/ICELMACH.2018.8506701","url":null,"abstract":"In this paper, two different type interior permanent magnet (IPM) motor designs are proposed for Computer Numerical Control (CNC) milling machine application as spindle motors. An existing surface mounted permanent magnet motor is used as a reference motor. Both spoke type and v-type Interior Permanent Magnet (IPM) motor alternatives are designed and optimized in detail. The results of the two IPM motors are compared with the reference Surface Permanent Magnet (SPM) motor for the same design requirements. Detailed loss analysis are also performed for the desired motor structure at high speeds. A prototype motor is manufactured and initial experimental tests are performed. Detailed comparison between Finite Element Analysis and test data are also presented. It is shown that it is possible to have an optimized IPM motor for such high speed spindle application.","PeriodicalId":292261,"journal":{"name":"2018 XIII International Conference on Electrical Machines (ICEM)","volume":"95 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130724442","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2018-09-01DOI: 10.1109/ICELMACH.2018.8507194
F. Wu, A. El-Refaie
Permanent-magnet Vernier machines (PMVMs) gained a lot of interest over the past couple of decades. This is mainly due to their high torque density enabled by magnetic gearing effect. This paper will provide a thorough review of recent advances in PMVMs. This review will cover principle of operation and nature of magnetic gearing in PMVMs, and better understanding of novel PMVMs topologies using different winding configuration as well as different modulation poles and rotor structures. Detailed discussions on choice of gear ratio/slot-pole combinations, design optimization and role of advanced materials in PMVMs will be presented. This will provide an update on the current state of the art as well as future areas of research. Furthermore, design issues, fault tolerance as well as cost reduction will be discussed highlighting the gap between the current state of the art and what is needed in practical applications.
{"title":"Permanent Magnet Vernier Machines: A Review","authors":"F. Wu, A. El-Refaie","doi":"10.1109/ICELMACH.2018.8507194","DOIUrl":"https://doi.org/10.1109/ICELMACH.2018.8507194","url":null,"abstract":"Permanent-magnet Vernier machines (PMVMs) gained a lot of interest over the past couple of decades. This is mainly due to their high torque density enabled by magnetic gearing effect. This paper will provide a thorough review of recent advances in PMVMs. This review will cover principle of operation and nature of magnetic gearing in PMVMs, and better understanding of novel PMVMs topologies using different winding configuration as well as different modulation poles and rotor structures. Detailed discussions on choice of gear ratio/slot-pole combinations, design optimization and role of advanced materials in PMVMs will be presented. This will provide an update on the current state of the art as well as future areas of research. Furthermore, design issues, fault tolerance as well as cost reduction will be discussed highlighting the gap between the current state of the art and what is needed in practical applications.","PeriodicalId":292261,"journal":{"name":"2018 XIII International Conference on Electrical Machines (ICEM)","volume":"14 2","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132467648","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2018-09-01DOI: 10.1109/ICELMACH.2018.8506976
G. Çakal, R. Zeinali, O. Keysan
Voice coil motors (VCMs) are becoming more popular due to their small size and high dynamic performance. They are commonly used in hard disk drives and vibration isolators in optical systems. Torque ripple is an important performance index for rotary VCM. In order to reduce torque ripple and make their dynamic performance better, various parameters of two different rotary VCM topologies are studied with finite element analysis. The effects of magnet separation angle, coil separation angle and coil type on torque characteristics are analyzed. In order to achieve better dynamic performance and higher precision, optimization study is conducted to find optimum design, which has only 3.3% torque ripple throughout its whole operation range.
{"title":"Design and Optimization of Reduced Torque Ripple Rotary Voice Coil Motor","authors":"G. Çakal, R. Zeinali, O. Keysan","doi":"10.1109/ICELMACH.2018.8506976","DOIUrl":"https://doi.org/10.1109/ICELMACH.2018.8506976","url":null,"abstract":"Voice coil motors (VCMs) are becoming more popular due to their small size and high dynamic performance. They are commonly used in hard disk drives and vibration isolators in optical systems. Torque ripple is an important performance index for rotary VCM. In order to reduce torque ripple and make their dynamic performance better, various parameters of two different rotary VCM topologies are studied with finite element analysis. The effects of magnet separation angle, coil separation angle and coil type on torque characteristics are analyzed. In order to achieve better dynamic performance and higher precision, optimization study is conducted to find optimum design, which has only 3.3% torque ripple throughout its whole operation range.","PeriodicalId":292261,"journal":{"name":"2018 XIII International Conference on Electrical Machines (ICEM)","volume":"285 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133000186","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2018-09-01DOI: 10.1109/ICELMACH.2018.8506873
Cristian A. Lopez, E. Strangas
The performance of an optimized PMSM machine could be improved by using a control-based torque ripple reduction technique. Optimization of PMSM performance including a torque ripple reduction current injection technique and increasing the operating current, while keeping copper losses to a minimum could lead to a larger set of possible optimal solutions. By adding a torque ripple reduction method to the previously optimized geometries that would be not acceptable, they can become acceptable and optimal, with minimum added losses. Combining cases studied through FEM and a splines regression model together, with a non-sorting genetic algorithm, solutions that have injection and no injection are found to be optimal. This allows the designer to have geometries that would otherwise be rejected become acceptable.
{"title":"Optimization of PMSM Performance with Torque Ripple Reduction and Loss Considerations","authors":"Cristian A. Lopez, E. Strangas","doi":"10.1109/ICELMACH.2018.8506873","DOIUrl":"https://doi.org/10.1109/ICELMACH.2018.8506873","url":null,"abstract":"The performance of an optimized PMSM machine could be improved by using a control-based torque ripple reduction technique. Optimization of PMSM performance including a torque ripple reduction current injection technique and increasing the operating current, while keeping copper losses to a minimum could lead to a larger set of possible optimal solutions. By adding a torque ripple reduction method to the previously optimized geometries that would be not acceptable, they can become acceptable and optimal, with minimum added losses. Combining cases studied through FEM and a splines regression model together, with a non-sorting genetic algorithm, solutions that have injection and no injection are found to be optimal. This allows the designer to have geometries that would otherwise be rejected become acceptable.","PeriodicalId":292261,"journal":{"name":"2018 XIII International Conference on Electrical Machines (ICEM)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130472565","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2018-09-01DOI: 10.1109/ICELMACH.2018.8507029
Jian Li, Yang Lu, Yunhyun Cho, R. Qu
This paper presents a design process and a detailed multi-physics analysis of an axial flux permanent magnet synchronous machine for large power direct-drive applications. The machine in this paper is 130kW at 26 rpm with a dual-stator inner-rotor structure. A stator core which is assembled with segmented and pre-wound teeth is first proposed and applied in a large power axial flux PM machines. Through this method, the challenges of manufacturing large diameter AFPM machines can be solved. A novel water-cooling system is embedded in the machine to transfer the heat. In addition, assembling procedure and manufacture process are also proposed. Finally, based on the multi-physics design, a prototype machine is manufactured and tested. The experiment results match well with the finite-element analysis (FEA).
{"title":"Design an Analysis of a Water-Cooled Axial Flux Permanent-Magnet Machine for Large Power Direct-Driven Applications","authors":"Jian Li, Yang Lu, Yunhyun Cho, R. Qu","doi":"10.1109/ICELMACH.2018.8507029","DOIUrl":"https://doi.org/10.1109/ICELMACH.2018.8507029","url":null,"abstract":"This paper presents a design process and a detailed multi-physics analysis of an axial flux permanent magnet synchronous machine for large power direct-drive applications. The machine in this paper is 130kW at 26 rpm with a dual-stator inner-rotor structure. A stator core which is assembled with segmented and pre-wound teeth is first proposed and applied in a large power axial flux PM machines. Through this method, the challenges of manufacturing large diameter AFPM machines can be solved. A novel water-cooling system is embedded in the machine to transfer the heat. In addition, assembling procedure and manufacture process are also proposed. Finally, based on the multi-physics design, a prototype machine is manufactured and tested. The experiment results match well with the finite-element analysis (FEA).","PeriodicalId":292261,"journal":{"name":"2018 XIII International Conference on Electrical Machines (ICEM)","volume":"5 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127899528","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2018-09-01DOI: 10.1109/ICELMACH.2018.8507230
M. Villani, M. Santececca, F. Parasiliti
In the last years the line-start synchronous motors have gained a growing interest thanks to the remarkable energy efficiency, since the operation at synchronous speed ensures the absence of losses in the squirrel cage at steady state. Typical application fields are fans, pumps, compressors and textile industry. Many papers propose line-start PM motors, due to their high efficiency and power density: rare earths magnets feat to this role thanks to the good coercive force, but they are also characterized by very high prices. Moreover, the price volatility of these alloys represents a drawback for mass production. On the other hand, line-start synchronous reluctance machines are very cost-effective and easy to manufacture, and they can compete with the induction motor in terms of reliability and cost. In this paper the design of a high efficiency 3 kW, 2 poles, frame size IEC 100 motor is proposed. A new design procedure is introduced and an optimization algorithm is applied. Two different geometries have been developed and compared, leading to a final design. The capability of the machine both during the starting transient and steady state operation has been analyzed.
{"title":"High-Efficiency Line-Start Synchronous Reluctance Motor for Fan and Pump Applications","authors":"M. Villani, M. Santececca, F. Parasiliti","doi":"10.1109/ICELMACH.2018.8507230","DOIUrl":"https://doi.org/10.1109/ICELMACH.2018.8507230","url":null,"abstract":"In the last years the line-start synchronous motors have gained a growing interest thanks to the remarkable energy efficiency, since the operation at synchronous speed ensures the absence of losses in the squirrel cage at steady state. Typical application fields are fans, pumps, compressors and textile industry. Many papers propose line-start PM motors, due to their high efficiency and power density: rare earths magnets feat to this role thanks to the good coercive force, but they are also characterized by very high prices. Moreover, the price volatility of these alloys represents a drawback for mass production. On the other hand, line-start synchronous reluctance machines are very cost-effective and easy to manufacture, and they can compete with the induction motor in terms of reliability and cost. In this paper the design of a high efficiency 3 kW, 2 poles, frame size IEC 100 motor is proposed. A new design procedure is introduced and an optimization algorithm is applied. Two different geometries have been developed and compared, leading to a final design. The capability of the machine both during the starting transient and steady state operation has been analyzed.","PeriodicalId":292261,"journal":{"name":"2018 XIII International Conference on Electrical Machines (ICEM)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128773178","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2018-09-01DOI: 10.1109/ICELMACH.2018.8506746
Eemeli Molsa, S. Saarakkala, M. Hinkkanen
This paper deals with modeling of a saturated induction machine. In control algorithms, the lnverse $-Gamma$ model is widely used. However, the saturation models are typically based on the T or $Gamma$ model. Transformation between these models is easy if the machine is magnetically linear, but since the motor saturates, the modeling becomes more complex. In this paper, we study the properties of the $Gamma$ and inverse $-Gamma$ models and the transformation between these two models when the saturation is taken into account. The phenomena related to model transformation are studied by means of analytical equations. Also, the functionality of the models is studied by means of laboratory experiments.
{"title":"Influence of Magnetic Saturation on Modeling of an Induction Motor","authors":"Eemeli Molsa, S. Saarakkala, M. Hinkkanen","doi":"10.1109/ICELMACH.2018.8506746","DOIUrl":"https://doi.org/10.1109/ICELMACH.2018.8506746","url":null,"abstract":"This paper deals with modeling of a saturated induction machine. In control algorithms, the lnverse $-Gamma$ model is widely used. However, the saturation models are typically based on the T or $Gamma$ model. Transformation between these models is easy if the machine is magnetically linear, but since the motor saturates, the modeling becomes more complex. In this paper, we study the properties of the $Gamma$ and inverse $-Gamma$ models and the transformation between these two models when the saturation is taken into account. The phenomena related to model transformation are studied by means of analytical equations. Also, the functionality of the models is studied by means of laboratory experiments.","PeriodicalId":292261,"journal":{"name":"2018 XIII International Conference on Electrical Machines (ICEM)","volume":"24 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125443215","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2018-09-01DOI: 10.1109/ICELMACH.2018.8506793
Cheng-Tsung Liu, Kuan Yang, Yu-Cheng Wu, He-Ling Chang, R. Lee
With the approaches of aging society, the demands of proper personal mobility-assistive devices (MDs) for elderly people have been considerably increased in recent years. For the application concerns, three permanent-magnet (PM) motors, namely the surface-mounted PM motor, the Vernier motor, and the flux-switching motor will be designed to meet the operational objectives for providing the assistive motions of knee joint parts on the exoskeleton. Based on the objective operational and physical constraints of the specific MDs, with their distinct flux path design scenarios, optimizations of these PM motors will be provided along with their thoroughly performance assessments. From the emulated analyses of these PM motors at various standard testing conditions along with hardware experimental validations, it is confident that some potential motor structures for related mobility-assistive device applications can thus be provided.
{"title":"Designs and Performance Assessments of Permanent-magnet Motors for Personal Mobility-assistive Device Applications","authors":"Cheng-Tsung Liu, Kuan Yang, Yu-Cheng Wu, He-Ling Chang, R. Lee","doi":"10.1109/ICELMACH.2018.8506793","DOIUrl":"https://doi.org/10.1109/ICELMACH.2018.8506793","url":null,"abstract":"With the approaches of aging society, the demands of proper personal mobility-assistive devices (MDs) for elderly people have been considerably increased in recent years. For the application concerns, three permanent-magnet (PM) motors, namely the surface-mounted PM motor, the Vernier motor, and the flux-switching motor will be designed to meet the operational objectives for providing the assistive motions of knee joint parts on the exoskeleton. Based on the objective operational and physical constraints of the specific MDs, with their distinct flux path design scenarios, optimizations of these PM motors will be provided along with their thoroughly performance assessments. From the emulated analyses of these PM motors at various standard testing conditions along with hardware experimental validations, it is confident that some potential motor structures for related mobility-assistive device applications can thus be provided.","PeriodicalId":292261,"journal":{"name":"2018 XIII International Conference on Electrical Machines (ICEM)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125498250","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2018-09-01DOI: 10.1109/ICELMACH.2018.8506797
N. Pothi, Zi-Qiang Zhu, Yuan Ren
For hybrid-excited permanent magnet machines, both the field excitation current and the d-axis current can be utilized to adjust the flux-linkage, which offers more flexible control parameters for flux-weakening operation. In this paper, three flux-weakening control methods, i.e. utilizing field excitation current alone (Method-I), utilizing armature current alone (Method-II), and optimal method (Method-III), are proposed and compared. All three methods can achieve the same torque in the constant-torque region by the same enhanced field excitation current. In the flux-weakening region, Method-I exhibits low torque and limited operating speed range. The operating speed range can be further extended by Method-II and Method-III. In addition, Method-III can provide a higher efficiency in flux-weakening region than Method-II since the copper loss of field winding can be decreased in proportion to the reduction of field excitation current. Those flux-weakening control methods are verified by experimental results.
{"title":"Flux-Weakening Control of Novel Hybrid-Excited Permanent Magnet Machines","authors":"N. Pothi, Zi-Qiang Zhu, Yuan Ren","doi":"10.1109/ICELMACH.2018.8506797","DOIUrl":"https://doi.org/10.1109/ICELMACH.2018.8506797","url":null,"abstract":"For hybrid-excited permanent magnet machines, both the field excitation current and the d-axis current can be utilized to adjust the flux-linkage, which offers more flexible control parameters for flux-weakening operation. In this paper, three flux-weakening control methods, i.e. utilizing field excitation current alone (Method-I), utilizing armature current alone (Method-II), and optimal method (Method-III), are proposed and compared. All three methods can achieve the same torque in the constant-torque region by the same enhanced field excitation current. In the flux-weakening region, Method-I exhibits low torque and limited operating speed range. The operating speed range can be further extended by Method-II and Method-III. In addition, Method-III can provide a higher efficiency in flux-weakening region than Method-II since the copper loss of field winding can be decreased in proportion to the reduction of field excitation current. Those flux-weakening control methods are verified by experimental results.","PeriodicalId":292261,"journal":{"name":"2018 XIII International Conference on Electrical Machines (ICEM)","volume":"146 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123332048","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
京公网安备 11010802042870号
京ICP备2023020795号-1
扫码关注我们
求助内容：
应助结果提醒方式：