Pub Date : 2018-12-01DOI: 10.1109/EDPC.2018.8658307
G. B. Mariani, N. Voyer
This paper investigates the simulation of a sensorless speed control method with estimates the position and the speed of a synchronous reluctance machine (SyncRM). Speed control implements Field Oriented Control (FOC)., fed with estimated speed and position. The method combines two different estimators. First., a Luenberger observer estimates the load torque of the machine from the mechanical model of the machine., knowing the value of the inertia coefficient and the dynamic friction coefficient. Then, a Kalman filter estimates the speed and the position of the machine., from differential state equations resulting from the analytical (electrical) model of the machine in the rotational reference frame, taking benefit of the estimated load torque. The robustness of the method was verified by Matlab/Simulink simulation for different speed and torque profiles., against parameter errors of the electrical (inductance and resistance) and mechanical (inertia and dynamic friction) models of a 5kW machine
{"title":"Robustness Evaluation of a Sensorless Control of Synchronous Reluctance Motor with a Kalman Filter & a Luenberger Observer","authors":"G. B. Mariani, N. Voyer","doi":"10.1109/EDPC.2018.8658307","DOIUrl":"https://doi.org/10.1109/EDPC.2018.8658307","url":null,"abstract":"This paper investigates the simulation of a sensorless speed control method with estimates the position and the speed of a synchronous reluctance machine (SyncRM). Speed control implements Field Oriented Control (FOC)., fed with estimated speed and position. The method combines two different estimators. First., a Luenberger observer estimates the load torque of the machine from the mechanical model of the machine., knowing the value of the inertia coefficient and the dynamic friction coefficient. Then, a Kalman filter estimates the speed and the position of the machine., from differential state equations resulting from the analytical (electrical) model of the machine in the rotational reference frame, taking benefit of the estimated load torque. The robustness of the method was verified by Matlab/Simulink simulation for different speed and torque profiles., against parameter errors of the electrical (inductance and resistance) and mechanical (inertia and dynamic friction) models of a 5kW machine","PeriodicalId":358881,"journal":{"name":"2018 8th International Electric Drives Production Conference (EDPC)","volume":"6 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128105012","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 : 2018-12-01DOI: 10.1109/EDPC.2018.8658286
Jing Zhang, D. Spath, Ye He, A. Boronka
In the booming market of electrified mobility, product cost plays a crucial role for the competiveness of electric vehicles. Approximately 70% of the product costs are determined in the product development phase. Therefore, a cost evaluation of the product design in the development stage is necessary to check the achievement of cost target and if needed to modify the design as early as possible. To get a holistic view, not only the material cost, but also the manufacturing cost have to be taken into consideration. This work presents an approach to evaluate the cost of lamination stacks (stacking cost not included) used in electric traction motors of electric or hybrid vehicles. By following design of the lamination, the stamping process is modularized, which has an influence on the raw material utilization and manufacturing cost. Minimum cost of laminations can be achieved by increasing raw material utilization and decreasing manufacturing cost. The proposed model is developed for lamination cost estimation based on an optimum production decision, which is determined by selecting suitable stamping machine and proper mold design. The relationship between lamination design and the stamping process in terms of cost is illustrated under the condition of a fixed production volume. Finally, the influences of design changes on lamination costs are analyzed and the significance of this model is demonstrated.
{"title":"Cost-Efficient Selection of Stamping Machines for Lamination Production in the Electric Traction Motor Application","authors":"Jing Zhang, D. Spath, Ye He, A. Boronka","doi":"10.1109/EDPC.2018.8658286","DOIUrl":"https://doi.org/10.1109/EDPC.2018.8658286","url":null,"abstract":"In the booming market of electrified mobility, product cost plays a crucial role for the competiveness of electric vehicles. Approximately 70% of the product costs are determined in the product development phase. Therefore, a cost evaluation of the product design in the development stage is necessary to check the achievement of cost target and if needed to modify the design as early as possible. To get a holistic view, not only the material cost, but also the manufacturing cost have to be taken into consideration. This work presents an approach to evaluate the cost of lamination stacks (stacking cost not included) used in electric traction motors of electric or hybrid vehicles. By following design of the lamination, the stamping process is modularized, which has an influence on the raw material utilization and manufacturing cost. Minimum cost of laminations can be achieved by increasing raw material utilization and decreasing manufacturing cost. The proposed model is developed for lamination cost estimation based on an optimum production decision, which is determined by selecting suitable stamping machine and proper mold design. The relationship between lamination design and the stamping process in terms of cost is illustrated under the condition of a fixed production volume. Finally, the influences of design changes on lamination costs are analyzed and the significance of this model is demonstrated.","PeriodicalId":358881,"journal":{"name":"2018 8th International Electric Drives Production Conference (EDPC)","volume":"89 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126028528","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 : 2018-12-01DOI: 10.1109/EDPC.2018.8658327
Andrea Floris, A. Serpi, M. Porru, A. Damiano
The design procedure of two different double-stage Magnetic Gear Transmission systems (MaGTs) is presented in this paper. The MaGTs are characterized by the same maximum input torque and speed, but by different Permanent Magnet (PM) materials, namely NdFeB and Ferrite. The design procedure consists of optimizing the MaGT inner and outer stages sequentially, by selecting the cheapest configurations among all those that comply with both mechanical and magnetic constraints. The performances of the designed MaGTs are determined and compared to each other by both an analytical approach and Finite Element Analyses (FEAs), which are carried out by means of FEMM and SolidWorks software. The comparison reveals the most important advantages and drawbacks of each configuration, together with their possible future developments.
{"title":"A Comparative Analysis of Different Double-Stage Magnetic Gear Transmission Systems with High Gear Ratio","authors":"Andrea Floris, A. Serpi, M. Porru, A. Damiano","doi":"10.1109/EDPC.2018.8658327","DOIUrl":"https://doi.org/10.1109/EDPC.2018.8658327","url":null,"abstract":"The design procedure of two different double-stage Magnetic Gear Transmission systems (MaGTs) is presented in this paper. The MaGTs are characterized by the same maximum input torque and speed, but by different Permanent Magnet (PM) materials, namely NdFeB and Ferrite. The design procedure consists of optimizing the MaGT inner and outer stages sequentially, by selecting the cheapest configurations among all those that comply with both mechanical and magnetic constraints. The performances of the designed MaGTs are determined and compared to each other by both an analytical approach and Finite Element Analyses (FEAs), which are carried out by means of FEMM and SolidWorks software. The comparison reveals the most important advantages and drawbacks of each configuration, together with their possible future developments.","PeriodicalId":358881,"journal":{"name":"2018 8th International Electric Drives Production Conference (EDPC)","volume":"46 9 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116539627","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 : 2018-12-01DOI: 10.1109/EDPC.2018.8658297
M. Ziegler, M. Schneider, M. Hubert, J. Franke
To minimize eddy current losses, stators and rotors are traditionally designed laminated. For this purpose, the single sheets are electrically separated from each other by an insulation layer. The production of electrical steel laminations for rotor and stator stacks is divided into the steps of cutting, stacking and joining. Currently, there are several possibilities for each process step. The selection of the suitable process depends on the application, quantity and size of the electrical steel laminations. In mass production, the electrical steel strip is separated mainly by stamping. In prototype manufacturing and for small series, the lamination is cut out by laser. In addition, wire EDM and water-jet cutting are applied in specific applications. Rotary cutting of electrical steel strip is a process that is not yet used in industry. However, the novel approach has a great potential, since investment and tooling costs are relatively low. Furthermore, the process is suitable for the production of thin laminations (smaller than 0.3 mm) which are used in traction motors for electric vehicles.
{"title":"Potentials of the Rotary Cutting Process for Electrical Steel Strip","authors":"M. Ziegler, M. Schneider, M. Hubert, J. Franke","doi":"10.1109/EDPC.2018.8658297","DOIUrl":"https://doi.org/10.1109/EDPC.2018.8658297","url":null,"abstract":"To minimize eddy current losses, stators and rotors are traditionally designed laminated. For this purpose, the single sheets are electrically separated from each other by an insulation layer. The production of electrical steel laminations for rotor and stator stacks is divided into the steps of cutting, stacking and joining. Currently, there are several possibilities for each process step. The selection of the suitable process depends on the application, quantity and size of the electrical steel laminations. In mass production, the electrical steel strip is separated mainly by stamping. In prototype manufacturing and for small series, the lamination is cut out by laser. In addition, wire EDM and water-jet cutting are applied in specific applications. Rotary cutting of electrical steel strip is a process that is not yet used in industry. However, the novel approach has a great potential, since investment and tooling costs are relatively low. Furthermore, the process is suitable for the production of thin laminations (smaller than 0.3 mm) which are used in traction motors for electric vehicles.","PeriodicalId":358881,"journal":{"name":"2018 8th International Electric Drives Production Conference (EDPC)","volume":"37 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124136962","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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