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2019 IEEE International Electric Machines & Drives Conference (IEMDC)最新文献

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Efficiency Improvement of In-Wheel Magnetic Geared Motor and Feasibility Study for Walking Support Machines 轮式磁力减速电机效率提升及行走支撑机可行性研究
2019 IEEE International Electric Machines & Drives Conference (IEMDC) Pub Date : 2019-05-12 DOI: 10.1109/IEMDC.2019.8785161
Koki Ito, T. Kadomatsu, K. Nakamura
{"title":"Efficiency Improvement of In-Wheel Magnetic Geared Motor and Feasibility Study for Walking Support Machines","authors":"Koki Ito, T. Kadomatsu, K. Nakamura","doi":"10.1109/IEMDC.2019.8785161","DOIUrl":"https://doi.org/10.1109/IEMDC.2019.8785161","url":null,"abstract":"A magnetic-geared motor in which an electric motor and a magnetic gear are magnetically combined is expected to be put into practical use. In a previous paper, a magnetic-geared motor was prototyped, and the feasibility and usefulness were demonstrated. However, the efficiency of the prototype geared-motor is not enough high. This paper describes the efficiency improvement of the magnetic-geared motor by both increasing torque and reducing losses. The improved geared-motor demonstrates that the efficiency is improved remarkably. Furthermore, feasibility for applying to walking support machines is studied.","PeriodicalId":378634,"journal":{"name":"2019 IEEE International Electric Machines & Drives Conference (IEMDC)","volume":"24 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-05-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129170236","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}
引用次数: 5
Experimental Comparison of Synchronous Reluctance Motors with and without Ferrite Magnet Assistance 带与不带铁氧体辅助的同步磁阻电动机的实验比较
2019 IEEE International Electric Machines & Drives Conference (IEMDC) Pub Date : 2019-05-12 DOI: 10.1109/IEMDC.2019.8785157
S. Neusüs, A. Binder
{"title":"Experimental Comparison of Synchronous Reluctance Motors with and without Ferrite Magnet Assistance","authors":"S. Neusüs, A. Binder","doi":"10.1109/IEMDC.2019.8785157","DOIUrl":"https://doi.org/10.1109/IEMDC.2019.8785157","url":null,"abstract":"Both, the synchronous reluctance motor (SynRM) and the permanent magnet assisted synchronous reluctance motor (PMaSynRM), are high-efficient inverter-fed motors in variable-speed drive applications. Here, both machines are designed for the same stator of an 11 kW totally-enclosed, fan-cooled standard cage induction motor. The experimental comparison between both motors confirms that the PMaSynRM using ferrite magnets has a 20% higher nominal output torque for the same rated current, an increased power factor of 0.88 instead of 0.81 and a higher efficiency by 1.2%-points in the base speed range at 1500 rpm as well as a 27% higher steady-state output power in the field-weakening range at 3000 rpm. On the contrary, the performance of the PMaSynRM decreases with increasing ferrite magnet temperature. Further, the ferrite magnets demagnetize partially at a three-phase sudden short-circuit.","PeriodicalId":378634,"journal":{"name":"2019 IEEE International Electric Machines & Drives Conference (IEMDC)","volume":"11 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-05-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129490876","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}
引用次数: 1
Investigation of Integer/Fractional Slot Consequent Pole PM Machines with Different Rotor Structures 不同转子结构的整数/分数槽顺极永磁电机研究
2019 IEEE International Electric Machines & Drives Conference (IEMDC) Pub Date : 2019-05-12 DOI: 10.1109/IEMDC.2019.8785273
R. Zhou, G. Li, Z. Zhu, Y. Li, M. Foster, D. Stone
{"title":"Investigation of Integer/Fractional Slot Consequent Pole PM Machines with Different Rotor Structures","authors":"R. Zhou, G. Li, Z. Zhu, Y. Li, M. Foster, D. Stone","doi":"10.1109/IEMDC.2019.8785273","DOIUrl":"https://doi.org/10.1109/IEMDC.2019.8785273","url":null,"abstract":"This paper investigates several integer and fractional slot consequent-pole permanent magnet machines (CPM) with different rotor structures. Besides the conventional SPM rotor, the most commonly used rotor structures for conventional IPMs such as the I-shape (I–IPM) and V-shape (V-IPM) are employed for comparison. The electromagnetic performance such as back-EMF, on-load torque, PM eddy current losses and dynamic characteristics are compared using 2D finite element analysis. In addition, the 3D thermal models including end-windings and end plates are established to predict the temperature variations in different machines. Then the demagnetization withstand capabilities of different CPMs are analysed by taking into account the temperature influence on magnet working point. It is found that the CPMs with IPM rotors have much better demagnetization withstand capabilities compared with their SPM counterparts.","PeriodicalId":378634,"journal":{"name":"2019 IEEE International Electric Machines & Drives Conference (IEMDC)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-05-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129881847","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}
引用次数: 3
System Loss Measurement of a Novel Outer Rotor Flywheel Energy Storage System 一种新型外转子飞轮储能系统损耗测量
2019 IEEE International Electric Machines & Drives Conference (IEMDC) Pub Date : 2019-05-02 DOI: 10.1109/IEMDC.2019.8785110
Maximilian Schneider, S. Rinderknecht
{"title":"System Loss Measurement of a Novel Outer Rotor Flywheel Energy Storage System","authors":"Maximilian Schneider, S. Rinderknecht","doi":"10.1109/IEMDC.2019.8785110","DOIUrl":"https://doi.org/10.1109/IEMDC.2019.8785110","url":null,"abstract":"The paper addresses a novel outer rotor flywheel energy storage system. A concept for non-invasive efficiency measurement approach and the necessary data acquisition system is described. The measurement results of a full size system are shown and discussed. They show that the current prototype has a maximum conversion efficiency of 96.4 % although the inverter operation mode is not ideal. These measurements are used to validate an anylictical loss model of the flywheel that is used to optimimize the system. The optimization results show that significant improvements regarding efficiency and energy density of the flywheel are possible.","PeriodicalId":378634,"journal":{"name":"2019 IEEE International Electric Machines & Drives Conference (IEMDC)","volume":"27 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-05-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130769650","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}
引用次数: 6
Sensorless Control of Synchronous Reluctance Motor Drives: Improved Modeling and Analysis Beyond Active Flux 同步磁阻电机驱动的无传感器控制:超越有源磁链的改进建模和分析
2019 IEEE International Electric Machines & Drives Conference (IEMDC) Pub Date : 2019-05-01 DOI: 10.1109/IEMDC.2019.8785315
Anantaram Varatharajan, G. Pellegrino
{"title":"Sensorless Control of Synchronous Reluctance Motor Drives: Improved Modeling and Analysis Beyond Active Flux","authors":"Anantaram Varatharajan, G. Pellegrino","doi":"10.1109/IEMDC.2019.8785315","DOIUrl":"https://doi.org/10.1109/IEMDC.2019.8785315","url":null,"abstract":"The paper presents a framework for the design and analysis of position observers for sensorless control of synchronous reluctance machines. An improved inductance model is developed to account for the position error induced inductance variations. The instability regions of active flux based position observer are analytically identified and validated. A novel technique, Adaptive Projection vector for Position error estimation (APP), that alleviates the stability problems is introduced. Furthermore, the proposed technique can be augmented with a second projection vector to estimate speed error independently of the position error, referred to as Adaptive Projection vector matrix for Position and Speed error estimation (APPS). Stability and performance of proposed technique is validated on a 1 kW synchronous reluctance motor test bench.","PeriodicalId":378634,"journal":{"name":"2019 IEEE International Electric Machines & Drives Conference (IEMDC)","volume":"131 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124259859","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}
引用次数: 4
Analytical Model of a Six-Phase PMSM for the Simulation of Stator Winding Faults on Turn Level 六相永磁同步电机定子绕组匝位故障仿真分析模型
2019 IEEE International Electric Machines & Drives Conference (IEMDC) Pub Date : 2019-05-01 DOI: 10.1109/IEMDC.2019.8785351
S. Foitzik, M. Doppelbauer
{"title":"Analytical Model of a Six-Phase PMSM for the Simulation of Stator Winding Faults on Turn Level","authors":"S. Foitzik, M. Doppelbauer","doi":"10.1109/IEMDC.2019.8785351","DOIUrl":"https://doi.org/10.1109/IEMDC.2019.8785351","url":null,"abstract":"The major limitation of the lifetime and reliability of electrical machines are stator winding faults. Inter-turn faults are for that matter often the origin of more severe faults, which can lead to complete system failures. Particularly, three-phase permanent magnet synchronous machines (PMSMs) have significant drawbacks in terms of fault tolerant operation. In comparison, six-phase PMSMs are more complex to analyze and to operate, but for this reason, also offer greater possibilities for the control scheme during fault. This paper presents the first analytical machine model to investigate the behavior of six-phase PMSMs with stator winding faults on turn level. In order to keep the model compact, the levels of abstraction vary within the stator winding circuit. The machine model is acausally implemented, which allows the simulation with current sources and current controlled voltage sources. The simulation results of the presented model are compared with the simulation results of an equivalent finite element analysis model. The average torque differs between the two models in case of an inter-turn fault at nominal load operation by 0.3 %, the amplitude of the fault current differs by 3.3 % and the frequency spectra of the voltages show equal characteristics, while the computation time is 200 times faster with the analytical model. We use the developed model for the analysis of the machine behavior under stator winding faults relevant in practice. With the machine analysis's outcome, we are able to develop a more sophisticated fault management system, which enhances fault tolerant operation in comparison with three-phase PMSMs.","PeriodicalId":378634,"journal":{"name":"2019 IEEE International Electric Machines & Drives Conference (IEMDC)","volume":"22 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116946781","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}
引用次数: 1
Saliency based Self-Sensing Enhanced Operating Condition Monitoring Using High-Frequency Injection Under Intentional Magnetic Saturation 磁饱和下高频注入显著性自感知增强工况监测
2019 IEEE International Electric Machines & Drives Conference (IEMDC) Pub Date : 2019-05-01 DOI: 10.1109/IEMDC.2019.8785140
Y. Kang, B. Sarlioglu, R. Lorenz
{"title":"Saliency based Self-Sensing Enhanced Operating Condition Monitoring Using High-Frequency Injection Under Intentional Magnetic Saturation","authors":"Y. Kang, B. Sarlioglu, R. Lorenz","doi":"10.1109/IEMDC.2019.8785140","DOIUrl":"https://doi.org/10.1109/IEMDC.2019.8785140","url":null,"abstract":"In this paper, a simple technique to monitor the saturation effect on dq-incremental inductance is proposed. The high frequency injection (HFI) based technique can detect enhanced or diminished self-sensing ability under intentional magnetic saturation. Inductive saliency based self-sensing depend on the difference between d-axis and q-axis incremental inductance of the machine where the dq-axes inductive saliency is operating point dependent property. Prior researches showed the machine non-linear characteristic consideration under magnetic saturation is one of the key factors for successful self-sensing control. Incremental dq-inductance variations under flux-weakening and flux-intensifying operation are estimated. A system level self-sensing ability can be achieved since the incremental dq-inductance are estimated in the exactly the same HFI based self-sensing environment, i.e., the inverter, the current sensor resolution, the demodulation technique for differential carrier current, and the injected carrier frequency and amplitude.","PeriodicalId":378634,"journal":{"name":"2019 IEEE International Electric Machines & Drives Conference (IEMDC)","volume":"17 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124945549","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}
引用次数: 3
Implementation of a Bearingless Axial-Force/Torque Motor Fan with Flex-PCB Windings 柔性pcb绕组无轴承轴向力/扭矩电机风扇的实现
2019 IEEE International Electric Machines & Drives Conference (IEMDC) Pub Date : 2019-05-01 DOI: 10.1109/IEMDC.2019.8785266
W. Gruber, W. Bauer, Daniel Wetsch, B. Klammer, N. Kurita
{"title":"Implementation of a Bearingless Axial-Force/Torque Motor Fan with Flex-PCB Windings","authors":"W. Gruber, W. Bauer, Daniel Wetsch, B. Klammer, N. Kurita","doi":"10.1109/IEMDC.2019.8785266","DOIUrl":"https://doi.org/10.1109/IEMDC.2019.8785266","url":null,"abstract":"Bearingless motors are very compact magnetically levitated systems. In addition to their technological benefits like no friction, no mechanical wear and long lifetime they can be simplified regarding their mechanical composition and electronic hardware demand. Under these constraints typically a one degree of freedom actively positioned system is preferable. Passive stabilization is used for the other degrees of freedom due to simplicity. In this manuscript such a system, the bearingless axial-force/torque motor, is implemented in a small fan application. The manufactured prototype is outlined and its hard- and software are explained. Static and dynamic measurements with the bearingless fan prove the concept and show its operation feasibility.","PeriodicalId":378634,"journal":{"name":"2019 IEEE International Electric Machines & Drives Conference (IEMDC)","volume":"90 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125128042","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}
引用次数: 8
Design and Experimental Evaluation of a High Specific Power Permanent Magnet Synchronous Machine 大功率永磁同步电机的设计与实验评价
2019 IEEE International Electric Machines & Drives Conference (IEMDC) Pub Date : 2019-05-01 DOI: 10.1109/IEMDC.2019.8785246
Longya Xu, Hongyu Wang, Han Xiong, Ziwei Ke, Julius Woo, Julia Zhang, Sheng Dong
{"title":"Design and Experimental Evaluation of a High Specific Power Permanent Magnet Synchronous Machine","authors":"Longya Xu, Hongyu Wang, Han Xiong, Ziwei Ke, Julius Woo, Julia Zhang, Sheng Dong","doi":"10.1109/IEMDC.2019.8785246","DOIUrl":"https://doi.org/10.1109/IEMDC.2019.8785246","url":null,"abstract":"As a learning step to gain experience in designing high specific power electric machines for demanding applications such as aircraft propulsion, this paper presents research results in the design, fabrication, and experimental testing of a scaled-down 300-kW electric machine. With advanced structure and materials, this machine achieves an active-material specific power of 14.4 kW/kg and an electromagnetic efficiency of 99.2% under full load condition using finite element analysis. The mechanical integrity of the rotor is fully validated at the rated speed of 17, 000 rpm in finite element analysis. The fabricated machine prototype is mounted onto a 350-hp dynamometer for comprehensive performance characterization. The efficiency of the machine prototype is mapped based on the experimental measurements under various operating conditions. In this paper, the electromagnetic analysis, trade-offs at the design stage, mechanical stability considerations, and experimental testing results are summarized and presented in detail.","PeriodicalId":378634,"journal":{"name":"2019 IEEE International Electric Machines & Drives Conference (IEMDC)","volume":"44 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125138541","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}
引用次数: 11
Experimental Study of Torque-Ripple and its Effect on the Flux Weakening Range of Synchronous Reluctance Machines 转矩脉动及其对同步磁阻电机磁链衰减范围影响的实验研究
2019 IEEE International Electric Machines & Drives Conference (IEMDC) Pub Date : 2019-05-01 DOI: 10.1109/IEMDC.2019.8785090
Rajendra Thike, P. Pillay
{"title":"Experimental Study of Torque-Ripple and its Effect on the Flux Weakening Range of Synchronous Reluctance Machines","authors":"Rajendra Thike, P. Pillay","doi":"10.1109/IEMDC.2019.8785090","DOIUrl":"https://doi.org/10.1109/IEMDC.2019.8785090","url":null,"abstract":"Synchronous reluctance motors (SynRMs) exhibit a high rotor anisotropy in order to obtain a performance comparable to that of permanent magnet synchronous motors. The air-gap flux density is not sinusoidal due to the stator slots and rotor flux barriers. The non-sinusoidal distribution of the air-gap flux causes torque-ripple in the synchronous reluctance machine. This paper proposes an experimental method to measure the torque-ripple of the synchronous reluctance machine at static conditions. The proposed method is used to study the torque-ripple of two similarly sized synchronous reluctance machines. Experimental results are presented for the torque-ripple at various operating conditions including extended speed region. It is found that the percentage torque-ripple for SynRMs increases in the extended speed region. The effects of torque-ripple in this region is experimentally studied, and it is found that the torque-ripple places a limit on the torque-speed range of the motor.","PeriodicalId":378634,"journal":{"name":"2019 IEEE International Electric Machines & Drives Conference (IEMDC)","volume":"144 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125759532","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}
引用次数: 1
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