2019 12th International Symposium on Linear Drives for Industry Applications (LDIA)最新文献_第3页

Analysis of an Electromagnetic Railgun with Tapered Rails and Concave Armature using 3-D FEM 锥形导轨凹电枢电磁轨道炮的三维有限元分析

2019 12th International Symposium on Linear Drives for Industry Applications (LDIA) Pub Date : 2019-07-01 DOI: 10.1109/LDIA.2019.8770999

S. Praneeth, Dipta Chaudhuri, Bhim Singh, S. Chatterjee, G. Bhuvaneswari

引用次数: 4

Control of the Lateral Vibration by using Weight Reduced Damper Coil on Superconducting Magnetically Levitation Bogie 利用减重阻尼线圈控制超导磁悬浮转向架的横向振动

2019 12th International Symposium on Linear Drives for Industry Applications (LDIA) Pub Date : 2019-07-01 DOI: 10.1109/LDIA.2019.8771001

S. Ohashi, Riki Nakakida, T. Takeuchi

{"title":"Control of the Lateral Vibration by using Weight Reduced Damper Coil on Superconducting Magnetically Levitation Bogie","authors":"S. Ohashi, Riki Nakakida, T. Takeuchi","doi":"10.1109/LDIA.2019.8771001","DOIUrl":"https://doi.org/10.1109/LDIA.2019.8771001","url":null,"abstract":"Superconducting magnetically levitated transportation system (JR Maglev) has been studied in Japan. The electrodynamic suspension is used for levitation and guidance. Gap control is not required for this suspension system, but the damping factor of the system is small. The damper coil system is considered to increase damping of the levitation system. Running simulation of the bogie is undertaken when the bogie passes the guideway displacement. The damper coil decreases the oscillation of the bogie. However, the energy for running is increased because of the weight of the damper coil. By changing the shape of the damper coil, the weight of the damper coil becomes half of the conventional one. From the results, the current of damper coil increases. When weight-reduced coil is used in passive damper mode, damping factor is small. But in the semi-active mode, damping factor increases. Electromagnetic analysis has been undertaken. Improvements of oscillations of the bogie with the weight-reduced damper coils are shown. The convergence time is improved 58.0% in lateral displacement and 57.3% on rolling angle by the weight-reduced damper coils.","PeriodicalId":214273,"journal":{"name":"2019 12th International Symposium on Linear Drives for Industry Applications (LDIA)","volume":"12 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133288108","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: 0

Trends in Superconducting Linear Electric Machines 超导直线电机的发展趋势

2019 12th International Symposium on Linear Drives for Industry Applications (LDIA) Pub Date : 2019-07-01 DOI: 10.1109/LDIA.2019.8771005

M. Bianchetti, B. D. de Bruyn, D. Krop, E. Lomonova

引用次数: 1

Modified H-LSM for urban MAGLEVs 城市磁悬浮列车的改进H-LSM

2019 12th International Symposium on Linear Drives for Industry Applications (LDIA) Pub Date : 2019-07-01 DOI: 10.1109/LDIA.2019.8770994

I. Boldea, L. Tutelea, X. Xiao, I. Torac, W. Xu

{"title":"Modified H-LSM for urban MAGLEVs","authors":"I. Boldea, L. Tutelea, X. Xiao, I. Torac, W. Xu","doi":"10.1109/LDIA.2019.8770994","DOIUrl":"https://doi.org/10.1109/LDIA.2019.8770994","url":null,"abstract":"MAGLEVs-vehicles without wheels - that use electromagnetic forces for propulsion, levitation (suspension) and guidance -are credited with reduced noise, vibration and energy per passenger and km for given commercial speeds (from urban to suburban or interurban high speeds (400km/h and more)). Existing active and passive guide way MAGLEVs have propulsion (only) efficiency around 0.7 and a power factor bellow 0.65, while the active guide way MAGLEVs imply also large initial (active track) costs. A passive guideway H-LSM (homopolar linear synchronous motor) MAGLEV (MAGNIBUS-01) with integrated propulsion and levitation control proved in a 4 tons prototype at 10 m/s, a total efficiency of 0.8 and 0.8 lagging power factor (propulsion and levitation copper and iron losses considered). In an effort to further reduce the system (and passive guide way) initial costs but keep efficiency and power factor as above an improved H-LSM topology, capable to offer controlled propulsion, levitation and guidance is investigated, for a MAGLEV “flying” under a single beam sustained by a high post structure (tele cabin-like), by preliminary design and key FEM validations for a potential 16 tons urban vehicle capable of 16kN up to 20 m/s for a total efficiency above 80% above 10m/s. In depth design and control investigations are planned for the near future.","PeriodicalId":214273,"journal":{"name":"2019 12th International Symposium on Linear Drives for Industry Applications (LDIA)","volume":"48 3","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114131305","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

A study of translator length in a tubular linear electrical machine designed for use in alinear combustion joule engine 用于直线燃烧焦耳发动机的管状直线电机的转炉长度研究

2019 12th International Symposium on Linear Drives for Industry Applications (LDIA) Pub Date : 2019-07-01 DOI: 10.1109/LDIA.2019.8771011

R. M. Korbekandi, N. Baker, Dawei Wu

引用次数: 1

Basic Characteristics of the Yoke Equipped Rotors in the Magnetic Bearing using HTS Pinning Effect 利用HTS钉钉效应的磁轴承带轭架转子的基本特性

2019 12th International Symposium on Linear Drives for Industry Applications (LDIA) Pub Date : 2019-07-01 DOI: 10.1109/LDIA.2019.8770991

S. Takimura, S. Hiraoka, T. Arai, S. Ohashi

引用次数: 1

Verification of Effectiveness of an MRF Semi-Active Damper using a Double-Cage Structure Elevator Simulator 利用双笼式电梯模拟器验证磁流变半主动阻尼器的有效性

2019 12th International Symposium on Linear Drives for Industry Applications (LDIA) Pub Date : 2019-07-01 DOI: 10.1109/LDIA.2019.8771019

T. Torii, K. Kawase, T. Nakagawa

引用次数: 0

Comparison Analysis of Cylindrical and Rectangular Linear Permanent Magnet Transverse-Flux Machines for Wave Energy Applications 波浪能应用圆柱形和矩形线性永磁横向磁通机的比较分析

2019 12th International Symposium on Linear Drives for Industry Applications (LDIA) Pub Date : 2019-07-01 DOI: 10.1109/LDIA.2019.8771012

O. Dobzhanskyi

引用次数: 3

Dynamic Analysis of a Tubular Generator for Automotive Suspension Applications 汽车悬架用管状发电机的动力学分析

2019 12th International Symposium on Linear Drives for Industry Applications (LDIA) Pub Date : 2019-07-01 DOI: 10.1109/LDIA.2019.8771025

M. Kleijer, L. Friedrich, B. Gysen, E. Lomonova

引用次数: 2

Bearing-less four-coil oscillatory linear motor 无轴承四圈振荡直线电机

2019 12th International Symposium on Linear Drives for Industry Applications (LDIA) Pub Date : 2019-07-01 DOI: 10.1109/LDIA.2019.8771030

F. Poltschak

{"title":"Bearing-less four-coil oscillatory linear motor","authors":"F. Poltschak","doi":"10.1109/LDIA.2019.8771030","DOIUrl":"https://doi.org/10.1109/LDIA.2019.8771030","url":null,"abstract":"Linear direct oscillatory actuation has the prime advantage to eliminate all components connected with the transformation of rotatory to translational motion. All negative side effects of these components, which are mainly losses and the need of a lubrication system, belong to the past. Moreover, the absence of a crankshaft reduces the constraints on the linear motion. On the other side, the target power density known from conventional drives pushes the requirements to higher operation frequencies and lower mover masses. This favors slotted motor geometries with small air gaps. Thus, unfortunately friction issues again require a closer look. The bearing forces now result to a considerable amount from the unbalanced magnetic pull. Though they ideally cancel in double-sided systems, manufacturing tolerances result in inevitable bearing forces and increase the requirements on dry running bearings. The linear oscillatory system analyzed in this paper follows the approach of keeping the moving mass small, the motor compact and eliminating any mechanical bearing issues at the same time. A minimal system is found in a four-coil arrangement capable of simultaneously generating axial thrust and bearing forces. The plate structure of the mover stabilizes the remaining degrees of freedom of the rigid body motion. The system is modeled and linearized to allow a decoupling of the thrust and bearing forces. The proposed control decouples the forces and is implemented on an evaluation model to validate the operation of the oscillatory bearing-less (self bearing) linear motor.","PeriodicalId":214273,"journal":{"name":"2019 12th International Symposium on Linear Drives for Industry Applications (LDIA)","volume":"7 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117155032","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: 0