2011 1st International Electric Drives Production Conference最新文献_第5页

A new approach in the production of electrical motors using only machining processes 仅使用机械加工工艺生产电动机的新方法

2011 1st International Electric Drives Production Conference Pub Date : 2011-11-21 DOI: 10.1109/EDPC.2011.6085554

A. Boehm, I. Hahn

引用次数: 3

Model-based voltage calculation for inverters with small DC-Link capacitance 基于模型的小直流电容逆变器电压计算

2011 1st International Electric Drives Production Conference Pub Date : 2011-11-21 DOI: 10.1109/EDPC.2011.6085566

M. von Zimmermann, A. Kuskov, B. Piepenbreier

引用次数: 0

Analytic examination of coupled axial-flux induction machines with reduced yoke 减轭轴磁通耦合感应电机的解析检验

2011 1st International Electric Drives Production Conference Pub Date : 2011-11-21 DOI: 10.1109/EDPC.2011.6085533

J. Igelspacher, Sonja Fluegel, H. Herzog

引用次数: 5

Reduction of torque and radial force fluctuation in permanent magnet synchronous motors by means of multi-objective optimization 用多目标优化方法减小永磁同步电机转矩和径向力波动

2011 1st International Electric Drives Production Conference Pub Date : 2011-11-21 DOI: 10.1109/EDPC.2011.6085546

J. Krotsch, Thomas Ley, B. Piepenbreier

{"title":"Reduction of torque and radial force fluctuation in permanent magnet synchronous motors by means of multi-objective optimization","authors":"J. Krotsch, Thomas Ley, B. Piepenbreier","doi":"10.1109/EDPC.2011.6085546","DOIUrl":"https://doi.org/10.1109/EDPC.2011.6085546","url":null,"abstract":"This work relates to external rotor type permanent magnet synchronous machines having surface mounted permanent magnets and two-layer non-overlapping windings. A short review of approaches to reduce fluctuation of forces presented in literature is given. As the reduction is associated in most cases with a negative influence on other important design goals, multi-objective optimizations are applied in conjunction with the finite element analysis yielding PARETO-optimal solutions with different preferences. PARETO-optimal solutions regarding the permanent magnet magnetization distribution and the current profiles minimizing the torque fluctuation of a 12-slot 8-pole machine and the higher frequency radial force harmonics in a 12-slot 10-pole machine are presented and discussed. A discrete PARETO-optimal magnetization distribution has been identified which promises a higher fundamental PM flux linkage amplitude compared to radial magnetization, but at a significantly lower cogging torque and torque ripple utilizing the balancing of open circuit voltage harmonics. Furthermore, it is shown that individual current harmonics affect individual radial force harmonics dominantly. A test setup is proposed and the numerically obtained instantaneous torque and the influence of current harmonics on the radial force amplitudes are verified with good agreement.","PeriodicalId":333533,"journal":{"name":"2011 1st International Electric Drives Production Conference","volume":"158 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-11-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121529186","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: 10

New approaches for highly productive laser welding of copper materials 铜材料高效激光焊接的新途径

2011 1st International Electric Drives Production Conference Pub Date : 2011-11-21 DOI: 10.1109/EDPC.2011.6085552

R. Ramsayer, S. Engler, G. Schmitz

{"title":"New approaches for highly productive laser welding of copper materials","authors":"R. Ramsayer, S. Engler, G. Schmitz","doi":"10.1109/EDPC.2011.6085552","DOIUrl":"https://doi.org/10.1109/EDPC.2011.6085552","url":null,"abstract":"Laser welding of highly conductive materials like copper is a difficult proposition, but offers a useful non-contact joining method, well geared for automation. Copper's high reflectivity at the 1 µm wavelengths has always been the barrier in the past to implement laser welding. Frequency doubled green lasers can remove this barrier and has a high potential to revolutionize the laser welding of copper materials in high volumes and for future applications. In this paper, we present new results for welding copper and copper alloys with a novel brilliant laser, emitting in the green wavelength region (up to 325 W@515 nm, 2 mm mrad). The results are compared with a state-of-the-art solid state laser, emitting in the infrared wavelength region (up to 1000 W@1030 nm, 2 mm mrad). Fundamental investigations on the absorption and energy coupling properties in the different phases of the process (heating up, heat conduction welding, deep penetration welding) were performed to learn more about process stability and process reproducibility of the welding process at copper alloys. Significant increase in process reproducibility can be demonstrated by using a green laser.","PeriodicalId":333533,"journal":{"name":"2011 1st International Electric Drives Production Conference","volume":"3 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-11-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114922647","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