2014 4th International Electric Drives Production Conference (EDPC)最新文献

{"title":"Cast coils for electrical machines and their application in automotive and industrial drive systems","authors":"M. Groninger, F. Horch, A. Kock, Michael Jakob, B. Ponick","doi":"10.1109/EDPC.2014.6984384","DOIUrl":"https://doi.org/10.1109/EDPC.2014.6984384","url":null,"abstract":"The casting production of coils for electrical machines is an innovative approach that offers significant advantages over conventional production methods in terms of achievable performance, torque density, and the thermal behaviour of electrical machines. Slot filling factors up to 90 % can be reached, whereas the production cost can be reduced due to good automation capability. On the other hand the cast coils are solid conductors which might lead to additional losses especially at high operating frequencies. In this paper, the electromagnetic and thermal characteristics of cast coils are presented. Two examples for automotive and industrial applications are shown.","PeriodicalId":423456,"journal":{"name":"2014 4th International Electric Drives Production Conference (EDPC)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-12-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130158777","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}

{"title":"Sensorless observer based hysteresis control of a transverse flux machine at low speed","authors":"J. Bauer, A. Kleimaier","doi":"10.1109/EDPC.2014.6984401","DOIUrl":"https://doi.org/10.1109/EDPC.2014.6984401","url":null,"abstract":"DYNAX is a transversal flux machine developed for high torque density. Fields of application are the drive train of hybrid and electric vehicles and automotive auxiliary equipment. Because of the high number of pole-pairs, the rotor angle measurement requires ambitious sensor technology. For cost sensitive series applications, a sensorless angle computation would be desirable. So the objective of actual research activities is the creation of an observer based, hysteresis current control that enables sensorless operation over the whole speed range. The hysteresis control strategy avoids typical problems of vector control, for example subharmonics and full modulation. The observer provides highly dynamic current data and permits a stable hysteresis current control without sensor. It compensates limited bandwidth of current sensor and other time delays in the signal path. Focus of this paper is the angle estimation at standstill and low speed, which is the most critical aspect.","PeriodicalId":423456,"journal":{"name":"2014 4th International Electric Drives Production Conference (EDPC)","volume":"30 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-12-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114298825","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}

{"title":"Magneto-optical and field-metric evaluation of the punching effect on magnetic properties of electrical steels with varying alloying content and grain size","authors":"Hristian Naumoski, A. Maucher, L. Vandenbossche, S. Jacobs, U. Herr, Xavier Chassang","doi":"10.1109/EDPC.2014.6984398","DOIUrl":"https://doi.org/10.1109/EDPC.2014.6984398","url":null,"abstract":"The punching of electrical steel sheets to manufacture iron cores for electrical machines can influence drastically the final magnetic properties of stator and rotor cores. In this paper, the influence of punching on the magnetic properties is studied on 5 mm wide ring core samples. Six different fully processed non-oriented electrical steels with varying alloy content and varying grain size were investigated. Both global (integral) as well as local magnetic characterisation is carried out. The global magnetic properties are obtained by field-metric magnetic measurements. Punching leads to an increase in the global ring core losses: for the specific case of 5mm wide punched rings, this increase is in the range of 10% to 30% (for losses at 1 T and 400 Hz) depending on the investigated material (this range corresponds to a loss increase of 2.5 to 5.5 W/kg). The local magnetic degradation due to punching becomes more important when approaching the cutting edge. For local magnetic characterisation the magneto-optical Kerr-effect is used. The method allows the observation of the magnetic domain behaviour near the cut edge. Moreover this magneto-optical method allows for a quantitative analysis of the effect of punching on the local magnetic contrast as a function of distance from the cut edge. In addition also micro hardness measurements are performed near the cut edges to determine the mechanically affected zone. Furthermore the influence of punching on the investigated local and global magnetic properties is discussed as a function of the differences in alloying content and grain size of the investigated materials. For the high alloyed electrical steels, the material with medium grain size deteriorates less due to punching than the material with high grain size. This can be observed both from the dc magnetization curves which exhibit higher permeability and from the iron losses at medium frequency (400Hz) after punching. At 50Hz the losses remain lowest for the high grain sized material, even after punching.","PeriodicalId":423456,"journal":{"name":"2014 4th International Electric Drives Production Conference (EDPC)","volume":"45 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-12-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131765129","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}

{"title":"Hysteresis-model oriented test procedure for soft-magnetic properties of printed or laminated toroids","authors":"M. Lindner, R. Werner","doi":"10.1109/EDPC.2014.6984408","DOIUrl":"https://doi.org/10.1109/EDPC.2014.6984408","url":null,"abstract":"This paper demonstrates a setup and test procedure to determine soft magnetic properties of toroid shaped specimen in order to overcome some restrictions of the Epstein frame. Next to a solution to the most prominent difficulties with toroids, the winding effort and the reproducibility, a feedforward control strategy based on a novel hysteresis model is proposed. This method promises faster and more reliable material tests. Afterwards, the new 3D screen printing technology is introduced anticipating magnificent impulses on the production of electrical machines. First printed samples were characterized via the presented test method. Both developments will enable designers to better specify, predict and adopt soft magnetic material as well as overcome some conventional constraints.","PeriodicalId":423456,"journal":{"name":"2014 4th International Electric Drives Production Conference (EDPC)","volume":"539 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-12-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132602095","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}

{"title":"New methods for reducing the cogging torque and torque ripples of PMSM","authors":"G. Dajaku, D. Gerling","doi":"10.1109/EDPC.2014.6984396","DOIUrl":"https://doi.org/10.1109/EDPC.2014.6984396","url":null,"abstract":"In this paper, two novel solutions for reducing the pulsating torque components of permanent magnet machines are presented and discussed. To reduce the cogging torque of PM machines, a new stator design with right- and left shifted slot openings along the circumferential direction is considered. The second solution reduces the torque ripple using a multistage rotor design with unsymmetrical flux-barriers. To prove the efficiency of these methods, the both techniques are applied during the design and optimization of two different PM machines for steering and also for traction applications. Simulation results show that, for the steering motor, a cogging torque lower than 70mNm is achieved using the new stator design, however, the torque ripple for the traction motor is reduced under 3,8% of load torque with the proposed new rotor.","PeriodicalId":423456,"journal":{"name":"2014 4th International Electric Drives Production Conference (EDPC)","volume":"33 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-12-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114659130","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}

{"title":"On the effect of material processing: microstructural and magnetic properties of electrical steel sheets","authors":"S. Steentjes, D. Franck, Kay Hameyer, S. Vogt, Martin Bednarz, Wolfram Volk, J. Dierdorf, Gerhard Hirt, Volker Schnabel, H. N. Mathur, S. Korte-Kerzel","doi":"10.1109/EDPC.2014.6984436","DOIUrl":"https://doi.org/10.1109/EDPC.2014.6984436","url":null,"abstract":"This paper presents both the effect of cutting on the material behavior of a typical used NGO electrical steel grade M230-30A as well as a study of the effect of annealing temperature after cold rolling on microstructure and magnetic properties beginning with an industrial hot rolled 2.4 wt.% Silicon steel of 2.0mm thickness. Modifications in the local mechanical properties due to the cutting process are investigated in detail. A quantitative analysis of the impact of material degradation for non-oriented electrical steels applied in traction drives is presented. In order to consider the large speed range of drives in automotive applications and the presence of higher harmonics, this analysis is conducted for a wide range of frequencies and magnetic polarizations. Nanoindentation is used to analyze the effect of strain from cutting on the hardness near the surface. A major conclusion is that it is indispensable to take into account influences due to material processing on magnetic materials properties during the design process of electrical machines.","PeriodicalId":423456,"journal":{"name":"2014 4th International Electric Drives Production Conference (EDPC)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-12-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130088266","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}

{"title":"Simulation of thin-walled injection molded magnets","authors":"M. Nguyen, Wolfgang Schinkothe","doi":"10.1109/EDPC.2014.6984404","DOIUrl":"https://doi.org/10.1109/EDPC.2014.6984404","url":null,"abstract":"Injection molded magnets offer significant advantages in production cost and freedom of design compared to sintered magnets. The magnetic properties of the molded magnets are influenced by complex and interdependent factors derived from process settings as well as magnetic and rheological material properties. Simulation of the resulting injection molded magnets is therefore very difficult. Existing approaches suffer from reduced accuracy for thin-walled parts since an inhomogeneous distribution of melt temperatures during filling is not taken into account. In this paper, a new simulation approach is presented that includes these influences. The new approach is first described step by step. The measurement of required material properties is presented and the results are discussed for an exemplary material. Simulations of a thin-walled injection molded plate with a multipolar magnetization structure are then performed using an existing as well as the new approach. The results for this part are finally compared in order to determine the new simulation approach's feasibility.","PeriodicalId":423456,"journal":{"name":"2014 4th International Electric Drives Production Conference (EDPC)","volume":"24 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-12-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128456509","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}

{"title":"Electric operability of an inductive charging system for electric vehicles in an urban area","authors":"D. Borrmann","doi":"10.1109/EDPC.2014.6984417","DOIUrl":"https://doi.org/10.1109/EDPC.2014.6984417","url":null,"abstract":"The construction of an inductive charging infrastructure for shared use of electric vehicles in an urban area means different challenges. On the one hand, the electrical components must be selected, installed and connected in accordance with certain preconditions in order to work. On the other hand, the boundary conditions of the charging system integrated into the street have to be taken into account. This means a totally new starting situation for the operation of the technology, in particular in the use of an underground distribution system for the installation of the components.","PeriodicalId":423456,"journal":{"name":"2014 4th International Electric Drives Production Conference (EDPC)","volume":"37 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-12-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133239268","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}

{"title":"A model to assess the sustainability of manufacturing equipment using the example of a reusable frequency converter housing","authors":"Michael Drechsel, Martin Bornschlegl, Andre Dornhofer, S. Spreng, R. Mackert, J. Franke","doi":"10.1109/EDPC.2014.6984379","DOIUrl":"https://doi.org/10.1109/EDPC.2014.6984379","url":null,"abstract":"This model shows how manufacturing equipment can be assessed according to its global warming potential. A model to evaluate, compare and therefore to enable a more sustainable production is shown. With the use of this model automotive production planners can improve the transparency for sustainable solutions. In addition, the example of a reusable frequency converter housing for conveyor technologies is presented. The main focus within the assessment is on raw material, product cycles and their ecologic and economic effects on the assessment results. It is shown that the end of life phase has a great influence on the overall carbon footprint of manufacturing equipment. Furthermore, ecologic and economic saving potentials suggest to establish new business models integrating the exploitation of used equipment.","PeriodicalId":423456,"journal":{"name":"2014 4th International Electric Drives Production Conference (EDPC)","volume":"65 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-12-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123001938","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}

{"title":"3-Axis magnetic field camera for ultrafast and high resolution inspection of permanent magnets","authors":"K. Vervaeke","doi":"10.1109/EDPC.2014.6984397","DOIUrl":"https://doi.org/10.1109/EDPC.2014.6984397","url":null,"abstract":"The current manuscript reports on a three-axis magnetic field camera system, capable of measuring the three components of the magnetic field distribution in a two-dimensional plane with high spatial resolution and at high speed. This new development, which is also commercially available, is illustrated by performing a full inspection of a rotary sensor magnet, whereby the complete vector magnetic field distribution is inspected, including the Bx, By and Bz components, as well as derived magnetic field components such as the full B-field and the distribution of the magnetic field vector direction (polar and azimuthal angles). Applications are found in R&D, production and quality control environments in different industries, such as sensor systems, permanent magnet motors, medical devices, automotive engineering, magnet manufacturing, consumer electronics and research institutes, where it can contribute to speed up R&D cycles, reduce time-to-market, quickly identify magnet quality issues and assure high quality products and high yield levels in the production line.","PeriodicalId":423456,"journal":{"name":"2014 4th International Electric Drives Production Conference (EDPC)","volume":"5 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-12-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128849898","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}