Pub Date : 2021-12-07DOI: 10.1109/EDPC53547.2021.9684225
D. Ukwungwu, T. Krichel, B. Schauerte, N. Leuning, S. Olschok, U. Reisgen, K. Hameyer
In this paper, a parameter study on the effects of spot-welding of thin electrical steel sheets is reported and evaluated by experimental measurements. Welding is a typical method to connect iron stacks of electrical machines. However, this process deteriorates the magnetic properties of the said electrical sheets, thereby increasing the iron losses and decreasing the magnetization of the magnetic core. The effects of three main welding process parameters namely: laser-power, laser focal position and working pressure are studied and evaluated. The dependency of the material degradation due to these parameters are quantified and metrologically characterized. In particular the approach of a stochastic spot-welding procedure is studied. This is due to its apparently less electromagnetic degradation, when compared to other welding procedures. Employing the stochastic spot-welding joins two or three single ring-shaped sheets together in an stochastic pattern, which reduces the eddy-current losses around the welded point.
{"title":"Parameter Study on the Effects of Spot-welding on the Electromagnetic Properties of Magnetic Cores Constructed from Electrical Steel.","authors":"D. Ukwungwu, T. Krichel, B. Schauerte, N. Leuning, S. Olschok, U. Reisgen, K. Hameyer","doi":"10.1109/EDPC53547.2021.9684225","DOIUrl":"https://doi.org/10.1109/EDPC53547.2021.9684225","url":null,"abstract":"In this paper, a parameter study on the effects of spot-welding of thin electrical steel sheets is reported and evaluated by experimental measurements. Welding is a typical method to connect iron stacks of electrical machines. However, this process deteriorates the magnetic properties of the said electrical sheets, thereby increasing the iron losses and decreasing the magnetization of the magnetic core. The effects of three main welding process parameters namely: laser-power, laser focal position and working pressure are studied and evaluated. The dependency of the material degradation due to these parameters are quantified and metrologically characterized. In particular the approach of a stochastic spot-welding procedure is studied. This is due to its apparently less electromagnetic degradation, when compared to other welding procedures. Employing the stochastic spot-welding joins two or three single ring-shaped sheets together in an stochastic pattern, which reduces the eddy-current losses around the welded point.","PeriodicalId":350594,"journal":{"name":"2021 11th International Electric Drives Production Conference (EDPC)","volume":"11 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-12-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121989854","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 : 2021-12-07DOI: 10.1109/edpc53547.2021.9684216
{"title":"[Copyright notice]","authors":"","doi":"10.1109/edpc53547.2021.9684216","DOIUrl":"https://doi.org/10.1109/edpc53547.2021.9684216","url":null,"abstract":"","PeriodicalId":350594,"journal":{"name":"2021 11th International Electric Drives Production Conference (EDPC)","volume":"26 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-12-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124010092","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 : 2021-12-07DOI: 10.1109/EDPC53547.2021.9684220
A. Kampker, Sebastian Kawollek, Benjamin Dorn, C. Stäck
The rising electromobility represents a solution to stronger regulations and increasing environmental awareness, but also brings its own set of obstacles [1]. In order to meet increasing demand, innovative electric motor topologies have been developed, with hairpin stator technology in particular [2]. While this technology promises high potential on both the product and process side, there are still challenges that need to be addressed. Currently high scrap rates are largely attributable to laser welding. As a decisive quality-determining process step, laser welding is thus considered as a quality gate in the process chain as it represents a highly sensitive and strongly interacting process. Furthermore, the main cause of scrap in hairpin welding is often ascribed to direct and indirect weld preparation. More specifically, to the geometric alignment and clamping of the joint. Traditionally used clamping devices for this process represent a compromise between positioning accuracy and process integrity. The use of fixtureless processes, the so-called initial strength joining, promises to be a remedy. Here, an active decoupling of laser welding from the upstream processes is established. In the context of this paper, the clamping and alignment methods currently used in hairpin production are analysed. Subsequently, existing fixtureless joining techniques are collected and additionally novel approaches are developed. Here, joining techniques with the functional methods of forming, additional elements and functional integration are considered, described and evaluated with regard to their potential and functionality. Concluding, the integration capability of the developed approaches into the existing process chain is examined.
{"title":"Initial Strength Joining of Flat Conductor-Based Shaped Coils for Optimised Laser Welding Preparation in Hairpin Technology","authors":"A. Kampker, Sebastian Kawollek, Benjamin Dorn, C. Stäck","doi":"10.1109/EDPC53547.2021.9684220","DOIUrl":"https://doi.org/10.1109/EDPC53547.2021.9684220","url":null,"abstract":"The rising electromobility represents a solution to stronger regulations and increasing environmental awareness, but also brings its own set of obstacles [1]. In order to meet increasing demand, innovative electric motor topologies have been developed, with hairpin stator technology in particular [2]. While this technology promises high potential on both the product and process side, there are still challenges that need to be addressed. Currently high scrap rates are largely attributable to laser welding. As a decisive quality-determining process step, laser welding is thus considered as a quality gate in the process chain as it represents a highly sensitive and strongly interacting process. Furthermore, the main cause of scrap in hairpin welding is often ascribed to direct and indirect weld preparation. More specifically, to the geometric alignment and clamping of the joint. Traditionally used clamping devices for this process represent a compromise between positioning accuracy and process integrity. The use of fixtureless processes, the so-called initial strength joining, promises to be a remedy. Here, an active decoupling of laser welding from the upstream processes is established. In the context of this paper, the clamping and alignment methods currently used in hairpin production are analysed. Subsequently, existing fixtureless joining techniques are collected and additionally novel approaches are developed. Here, joining techniques with the functional methods of forming, additional elements and functional integration are considered, described and evaluated with regard to their potential and functionality. Concluding, the integration capability of the developed approaches into the existing process chain is examined.","PeriodicalId":350594,"journal":{"name":"2021 11th International Electric Drives Production Conference (EDPC)","volume":"2002 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-12-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131357730","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 : 2021-12-07DOI: 10.1109/EDPC53547.2021.9684213
Adrian Fehrle, Felix Funk, Franz Teske, Felix Dorscht, J. Franke
The increasing popularity of electric vehicles (EVs) is leading to major challenges for utilities. The existing low-voltage grid will not be able to support the growing number of simultaneously charging vehicles and would therefore have to be expanded at high cost. In addition, these high charging phases lead to extreme demand peaks, which the utilities must meet by purchasing energy on the electricity spot market at expensive quarter-hourly rates. Through flexible charging processes controlled by the utilities, these costs could be significantly reduced. Similarly, grid utilization can be equalized by shifting the charging phases while parking to more beneficial electricity price periods. Nevertheless, it is guaranteed that there will be no comfort restrictions for the EV owner. To make this possible, EV owners have to enable the utilities to include their vehicles in the flexible charging process. In this paper, we present a contracting model for EVs, in which costumers do not buy the vehicle but lease it from the local utility instead. Reduced leasing rates incentivize end costumers to integrate their EV into the charging process optimization of the utility. Our findings show that this contracting model leads to significant cost savings for all parties involved.
{"title":"Integration of electric vehicles in time-flexible charging processes through contracting models","authors":"Adrian Fehrle, Felix Funk, Franz Teske, Felix Dorscht, J. Franke","doi":"10.1109/EDPC53547.2021.9684213","DOIUrl":"https://doi.org/10.1109/EDPC53547.2021.9684213","url":null,"abstract":"The increasing popularity of electric vehicles (EVs) is leading to major challenges for utilities. The existing low-voltage grid will not be able to support the growing number of simultaneously charging vehicles and would therefore have to be expanded at high cost. In addition, these high charging phases lead to extreme demand peaks, which the utilities must meet by purchasing energy on the electricity spot market at expensive quarter-hourly rates. Through flexible charging processes controlled by the utilities, these costs could be significantly reduced. Similarly, grid utilization can be equalized by shifting the charging phases while parking to more beneficial electricity price periods. Nevertheless, it is guaranteed that there will be no comfort restrictions for the EV owner. To make this possible, EV owners have to enable the utilities to include their vehicles in the flexible charging process. In this paper, we present a contracting model for EVs, in which costumers do not buy the vehicle but lease it from the local utility instead. Reduced leasing rates incentivize end costumers to integrate their EV into the charging process optimization of the utility. Our findings show that this contracting model leads to significant cost savings for all parties involved.","PeriodicalId":350594,"journal":{"name":"2021 11th International Electric Drives Production Conference (EDPC)","volume":"2 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-12-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130346933","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 : 2021-12-07DOI: 10.1109/EDPC53547.2021.9684207
Lukas Reißenweber, Marlon Zoll, A. Stadler, D. Lange, S. Weber
Coupled inductors offer advantages in terms of cost and efficiency for multiphase DC/DC converters. Using the example of a two-phase 48/12 V buck converter, the system behavior with uncoupled and coupled inductors are compared. For the same system characteristics, less material (core and winding) is required using a coupled inductor. Three approximation equations for the fringing field of the air gaps are compared by using a reluctance model. The inductor properties of the coupled and uncoupled inductors are compared with FEM simulations, small-signal and pulse measurements.
{"title":"Design and Analysis of a Coupled Inductor for Material Reduction in a Two-Phase Buck Converter","authors":"Lukas Reißenweber, Marlon Zoll, A. Stadler, D. Lange, S. Weber","doi":"10.1109/EDPC53547.2021.9684207","DOIUrl":"https://doi.org/10.1109/EDPC53547.2021.9684207","url":null,"abstract":"Coupled inductors offer advantages in terms of cost and efficiency for multiphase DC/DC converters. Using the example of a two-phase 48/12 V buck converter, the system behavior with uncoupled and coupled inductors are compared. For the same system characteristics, less material (core and winding) is required using a coupled inductor. Three approximation equations for the fringing field of the air gaps are compared by using a reluctance model. The inductor properties of the coupled and uncoupled inductors are compared with FEM simulations, small-signal and pulse measurements.","PeriodicalId":350594,"journal":{"name":"2021 11th International Electric Drives Production Conference (EDPC)","volume":"37 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-12-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128627680","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 : 2021-12-07DOI: 10.1109/EDPC53547.2021.9684228
Felix Funk, Franz Teske, Adrian Fehrle, J. Franke
A key condition for the continued proliferation of electric vehicles (EV) is the availability of EV charging infrastructure. While the expansion of the public network is progressing slowly, the number of private installations of charging stations is growing rapidly. In combination with a rooftop photovoltaic system (PV), private wallboxes provide inexpensive EV charging while simultaneously increasing the level of self-consumption. However, individual charging demand is limited and surplus energy has to be fed into the grid at unfavorable prices, which in addition leads to feed-in peaks that stress the electrical infrastructure. In this work, we hence propose the creation of a public marketplace for private charging capacity. Through this marketplace the availability of charging stations is improved, feed-in peaks in the grid are diminished, and an additional, more profitable revenue stream for PV-owners is created while charging prices are reduced at the same time. We validate the proposition by approximating the market size and estimating the capacity utilization based on real data from a geographically coherent example region.
{"title":"Increasing charging station availability through peer-to-peer reservation markets","authors":"Felix Funk, Franz Teske, Adrian Fehrle, J. Franke","doi":"10.1109/EDPC53547.2021.9684228","DOIUrl":"https://doi.org/10.1109/EDPC53547.2021.9684228","url":null,"abstract":"A key condition for the continued proliferation of electric vehicles (EV) is the availability of EV charging infrastructure. While the expansion of the public network is progressing slowly, the number of private installations of charging stations is growing rapidly. In combination with a rooftop photovoltaic system (PV), private wallboxes provide inexpensive EV charging while simultaneously increasing the level of self-consumption. However, individual charging demand is limited and surplus energy has to be fed into the grid at unfavorable prices, which in addition leads to feed-in peaks that stress the electrical infrastructure. In this work, we hence propose the creation of a public marketplace for private charging capacity. Through this marketplace the availability of charging stations is improved, feed-in peaks in the grid are diminished, and an additional, more profitable revenue stream for PV-owners is created while charging prices are reduced at the same time. We validate the proposition by approximating the market size and estimating the capacity utilization based on real data from a geographically coherent example region.","PeriodicalId":350594,"journal":{"name":"2021 11th International Electric Drives Production Conference (EDPC)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-12-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133583593","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 : 2021-12-07DOI: 10.1109/EDPC53547.2021.9684199
M. Bach, M. Linnemann, M. Bergmann, V. Psyk, V. Kräusel, Niclas Pohl
The steadily growing use of industrial electric motors worldwide, combined with the need for improved efficiency, require advanced technologies that are beneficial with regard to resource efficiency and productivity. One possibility for saving raw materials is to reduce the size and weight of motors while maintaining the same performance. This can be achieved through an increase of the so-called slot filling factor, which has substantial influence on the torque generation in the electric machine. One way of increasing the slot filling factor is to shape the respective conductors in such a way that the cross sections correspond to their position. The focus of this paper lies on the description of interactions in the forming process of tooth coils with trapezoidal cross section geometry of the individual turns. In particular, the shaping of the coil heads of coils produced by sequential forming and subsequent bending is characterized via FEM forming simulation. Furthermore, the contribution presents a possibility for manufacturing coils of different geometries at high output rate by using flexible forming operations. Compared to manufacturing process chains suggested earlier, this approach allows considerable shortening and optimization of the process chain.
{"title":"Towards the Forming of concentrated Windings with trapezoidal Cross Sections for Increasing the Slot Filling Factor","authors":"M. Bach, M. Linnemann, M. Bergmann, V. Psyk, V. Kräusel, Niclas Pohl","doi":"10.1109/EDPC53547.2021.9684199","DOIUrl":"https://doi.org/10.1109/EDPC53547.2021.9684199","url":null,"abstract":"The steadily growing use of industrial electric motors worldwide, combined with the need for improved efficiency, require advanced technologies that are beneficial with regard to resource efficiency and productivity. One possibility for saving raw materials is to reduce the size and weight of motors while maintaining the same performance. This can be achieved through an increase of the so-called slot filling factor, which has substantial influence on the torque generation in the electric machine. One way of increasing the slot filling factor is to shape the respective conductors in such a way that the cross sections correspond to their position. The focus of this paper lies on the description of interactions in the forming process of tooth coils with trapezoidal cross section geometry of the individual turns. In particular, the shaping of the coil heads of coils produced by sequential forming and subsequent bending is characterized via FEM forming simulation. Furthermore, the contribution presents a possibility for manufacturing coils of different geometries at high output rate by using flexible forming operations. Compared to manufacturing process chains suggested earlier, this approach allows considerable shortening and optimization of the process chain.","PeriodicalId":350594,"journal":{"name":"2021 11th International Electric Drives Production Conference (EDPC)","volume":"67 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-12-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125109310","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 : 2021-12-07DOI: 10.1109/EDPC53547.2021.9684222
S. Reuter, L. Berg, M. Doppelbauer
This paper presents the development and the validation by testing of an electric motor with an internal cooling system produced by transfer molding. The performance of the motor and challenging areas are first partially simulated also in detail before being validated on the test bench. In order to be able to classify the results in the best possible way, a second motor with an electrically identical design, but with a state-of-the-art cooling sleeve, is built in order to allow direct back-to-back testing and comparison of the results.
{"title":"Performance evaluation of a high-performance motor with thermoset molded internal cooling","authors":"S. Reuter, L. Berg, M. Doppelbauer","doi":"10.1109/EDPC53547.2021.9684222","DOIUrl":"https://doi.org/10.1109/EDPC53547.2021.9684222","url":null,"abstract":"This paper presents the development and the validation by testing of an electric motor with an internal cooling system produced by transfer molding. The performance of the motor and challenging areas are first partially simulated also in detail before being validated on the test bench. In order to be able to classify the results in the best possible way, a second motor with an electrically identical design, but with a state-of-the-art cooling sleeve, is built in order to allow direct back-to-back testing and comparison of the results.","PeriodicalId":350594,"journal":{"name":"2021 11th International Electric Drives Production Conference (EDPC)","volume":"24 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-12-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133124632","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 : 2021-12-07DOI: 10.1109/EDPC53547.2021.9684203
F. Wirth, L. Hausmann, André K. Eppler, J. Fleischer
As a result of the progressive electrification of mobility solutions, manufacturing technologies for distributed stator windings need to be improved in order to meet the automotive demand for productivity and quality. In this context, the hairpin technology already provides advantages regarding the possible level of automation and productivity in comparison to conventional winding technologies, but still shows technological weaknesses concerning process reliability. Against this background, approaches for optimized process control based on physical process models have a high potential to minimize waste in production resulting from variations in wire properties or an inappropriate machine parametrization. However, the accuracy of analytical modeling techniques is limited due to complex interactions of machine kinematics, tooling and material properties in rectangular wire bending processes. Hence, the calculation effort of more precise finite element simulations needs to be reduced in order to enable model-based process control and economic tool design. Therefore, conventional and AI-based methodologies for meta modeling of numerical process simulations are introduced and compared in this paper. Furthermore, opportunities of optimized process control of hairpin shaping processes based on efficient but also accurate metamodels are discussed.
{"title":"Metamodeling of Numerical Simulations for Optimization of Hairpin Bending Processes","authors":"F. Wirth, L. Hausmann, André K. Eppler, J. Fleischer","doi":"10.1109/EDPC53547.2021.9684203","DOIUrl":"https://doi.org/10.1109/EDPC53547.2021.9684203","url":null,"abstract":"As a result of the progressive electrification of mobility solutions, manufacturing technologies for distributed stator windings need to be improved in order to meet the automotive demand for productivity and quality. In this context, the hairpin technology already provides advantages regarding the possible level of automation and productivity in comparison to conventional winding technologies, but still shows technological weaknesses concerning process reliability. Against this background, approaches for optimized process control based on physical process models have a high potential to minimize waste in production resulting from variations in wire properties or an inappropriate machine parametrization. However, the accuracy of analytical modeling techniques is limited due to complex interactions of machine kinematics, tooling and material properties in rectangular wire bending processes. Hence, the calculation effort of more precise finite element simulations needs to be reduced in order to enable model-based process control and economic tool design. Therefore, conventional and AI-based methodologies for meta modeling of numerical process simulations are introduced and compared in this paper. Furthermore, opportunities of optimized process control of hairpin shaping processes based on efficient but also accurate metamodels are discussed.","PeriodicalId":350594,"journal":{"name":"2021 11th International Electric Drives Production Conference (EDPC)","volume":"17 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-12-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116225775","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 : 2021-12-07DOI: 10.1109/EDPC53547.2021.9684196
A. Mahr, Barbara Hartz, J. Franke
As part of the secondary insulation system for insertion winding stators, a new method was developed to apply the interphase insulation in the winding head. This invention is based on a robot guided spraying process that applies a plastic insulation layer on to the respective winding parts in the stator winding head. With an initial material selection and the construction of a prototype machine, the basic suitability as an automatable phase isolation process was verified in a previous paper at FAIM2021. For the use of spray insulation in the complex general system of insulation of an electrical machine, the new insulation must meet similar requirements as the paper insulation frequently used up to now. It is therefore essential to analyze the interactions between the newly applied spray insulation and further downstream processes, such as subsequent impregnation. Therefore, in this paper, the mechanical and electrical properties of unimpregnated and impregnated spray insulation layers are analyzed using DoE studies.
{"title":"Interaction between a spray-insulation for phase separation in the winding head and the following impregnation process in insertion winding stators","authors":"A. Mahr, Barbara Hartz, J. Franke","doi":"10.1109/EDPC53547.2021.9684196","DOIUrl":"https://doi.org/10.1109/EDPC53547.2021.9684196","url":null,"abstract":"As part of the secondary insulation system for insertion winding stators, a new method was developed to apply the interphase insulation in the winding head. This invention is based on a robot guided spraying process that applies a plastic insulation layer on to the respective winding parts in the stator winding head. With an initial material selection and the construction of a prototype machine, the basic suitability as an automatable phase isolation process was verified in a previous paper at FAIM2021. For the use of spray insulation in the complex general system of insulation of an electrical machine, the new insulation must meet similar requirements as the paper insulation frequently used up to now. It is therefore essential to analyze the interactions between the newly applied spray insulation and further downstream processes, such as subsequent impregnation. Therefore, in this paper, the mechanical and electrical properties of unimpregnated and impregnated spray insulation layers are analyzed using DoE studies.","PeriodicalId":350594,"journal":{"name":"2021 11th International Electric Drives Production Conference (EDPC)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-12-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129756172","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}
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