Pub Date : 2007-12-01DOI: 10.1109/PEDS.2007.4487673
Youguang Guo, Jianguo Zhu, Dikai Liu, Haiyan Lu, Shuhong Wang
This paper presents the design and analysis of a permanent magnet (PM) transverse flux motor with soft magnetic composite (SMC) core by applying multi-level multi-domain modeling. The design is conducted in two levels. The upper level is composed of a group of equations which describe the electrical and mechanical characteristics of the motor. The lower level consists of two domains: electromagnetic analysis and thermal calculation. The initial design, including structure, materials and major dimensions, is determined according to existing experience and empirical formulae. Then, optimization is carried out at the system level (the upper level) for the best motor performance by optimizing the structural dimensions. To successfully deal with such a multi-level multi-domain optimization problem, an effective modeling with both high computational accuracy and speed is required. For accurately computing the key motor parameters, such as back electromotive force, winding inductance and core loss, magnetic field finite element analysis is performed. The core loss in each element is stored for effective thermal calculation, and the winding inductance and back EMF are stored as a look-up table for effective analysis of the motor's dynamic performance. The presented approach is effective with good accuracy and reasonable computational speed.
{"title":"Application of Multi-level Multi-domain Modeling in the Design and Analysis of a PM Transverse Flux Motor with SMC Core","authors":"Youguang Guo, Jianguo Zhu, Dikai Liu, Haiyan Lu, Shuhong Wang","doi":"10.1109/PEDS.2007.4487673","DOIUrl":"https://doi.org/10.1109/PEDS.2007.4487673","url":null,"abstract":"This paper presents the design and analysis of a permanent magnet (PM) transverse flux motor with soft magnetic composite (SMC) core by applying multi-level multi-domain modeling. The design is conducted in two levels. The upper level is composed of a group of equations which describe the electrical and mechanical characteristics of the motor. The lower level consists of two domains: electromagnetic analysis and thermal calculation. The initial design, including structure, materials and major dimensions, is determined according to existing experience and empirical formulae. Then, optimization is carried out at the system level (the upper level) for the best motor performance by optimizing the structural dimensions. To successfully deal with such a multi-level multi-domain optimization problem, an effective modeling with both high computational accuracy and speed is required. For accurately computing the key motor parameters, such as back electromotive force, winding inductance and core loss, magnetic field finite element analysis is performed. The core loss in each element is stored for effective thermal calculation, and the winding inductance and back EMF are stored as a look-up table for effective analysis of the motor's dynamic performance. The presented approach is effective with good accuracy and reasonable computational speed.","PeriodicalId":166704,"journal":{"name":"2007 7th International Conference on Power Electronics and Drive Systems","volume":"25 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126829258","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 : 2007-11-01DOI: 10.1109/PEDS.2007.4487721
G. Zhu, Z. Liu, X. Li, B.Y. Liu, S. Duan, Y. Kang
According to the basic characteristics of arc welding and cutting, digital control system of soft-switch arc welding/cutting inverter power source is researched and developed. This paper analyzes the operation principle and presents hardware structure about digital control system of the soft-switch arc welding/cutting inverter power source. Then the software system is designed based on phase shift realization principle, and a detailed flowchart of the main program and the interrupt service routine are given. Through plentiful experiments and tests, it can be found that the soft-switch arc welding/cutting inverter power source based on digital control system operates well in various working situations. As a result, it is thought to be suitable for arc welding/cutting applications due to its effectiveness and robustness.
{"title":"Research on Digital Soft-switch Welding/Cutting Inverter Power Source","authors":"G. Zhu, Z. Liu, X. Li, B.Y. Liu, S. Duan, Y. Kang","doi":"10.1109/PEDS.2007.4487721","DOIUrl":"https://doi.org/10.1109/PEDS.2007.4487721","url":null,"abstract":"According to the basic characteristics of arc welding and cutting, digital control system of soft-switch arc welding/cutting inverter power source is researched and developed. This paper analyzes the operation principle and presents hardware structure about digital control system of the soft-switch arc welding/cutting inverter power source. Then the software system is designed based on phase shift realization principle, and a detailed flowchart of the main program and the interrupt service routine are given. Through plentiful experiments and tests, it can be found that the soft-switch arc welding/cutting inverter power source based on digital control system operates well in various working situations. As a result, it is thought to be suitable for arc welding/cutting applications due to its effectiveness and robustness.","PeriodicalId":166704,"journal":{"name":"2007 7th International Conference on Power Electronics and Drive Systems","volume":"23 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123155805","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 : 2007-11-01DOI: 10.1109/PEDS.2007.4487852
S. Sinha, N. K. Deb, N. Mondal, S. Biswas
This paper presents the design and performance of a motor having two rotors along the same axis and under the span of a single stator. This special type of motor has two shafts projecting from the two ends, which are mechanically independent of each other and thus can meet the requirement of differential drive in an electrical vehicle. This paper presents the design, construction and performance data obtained from experimental results of the motor. An equivalent circuit of the motor has been developed and verified. The characteristics of the dual rotor motor have been obtained experimentally from a prototype and presented in this paper.
{"title":"Design and Performance of a Single Stator, Dual Rotor Induction Motor","authors":"S. Sinha, N. K. Deb, N. Mondal, S. Biswas","doi":"10.1109/PEDS.2007.4487852","DOIUrl":"https://doi.org/10.1109/PEDS.2007.4487852","url":null,"abstract":"This paper presents the design and performance of a motor having two rotors along the same axis and under the span of a single stator. This special type of motor has two shafts projecting from the two ends, which are mechanically independent of each other and thus can meet the requirement of differential drive in an electrical vehicle. This paper presents the design, construction and performance data obtained from experimental results of the motor. An equivalent circuit of the motor has been developed and verified. The characteristics of the dual rotor motor have been obtained experimentally from a prototype and presented in this paper.","PeriodicalId":166704,"journal":{"name":"2007 7th International Conference on Power Electronics and Drive Systems","volume":"2 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117063177","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 : 2007-11-01DOI: 10.1109/PEDS.2007.4487746
P. Somsiri, P. Champa, P. Wipasuramonton, K. Tungpimonrut, P. Aree
This paper presents a simple method to determine the initial rotor position of a three-phase star- connected switched reluctance machine (SRM) at standstill without position and current sensors. The principle of the initial rotor position estimation is based on the stator inductance variation related to the actual rotor position. In the proposed method, only two narrow voltage pulse injections are applied in sequence. In this method the machine parameters and phase current detection are not required. The method is suitable for low-cost SRM-drive applications. The experimental results were carried out on a 6/4 poles three-phase SRM and show the satisfactory accuracy of the proposed initial rotor position estimation.
{"title":"Voltage Injection Based Initial Rotor Position Estimation Method for Three-Phase Star-Connected Switched Reluctance Machines","authors":"P. Somsiri, P. Champa, P. Wipasuramonton, K. Tungpimonrut, P. Aree","doi":"10.1109/PEDS.2007.4487746","DOIUrl":"https://doi.org/10.1109/PEDS.2007.4487746","url":null,"abstract":"This paper presents a simple method to determine the initial rotor position of a three-phase star- connected switched reluctance machine (SRM) at standstill without position and current sensors. The principle of the initial rotor position estimation is based on the stator inductance variation related to the actual rotor position. In the proposed method, only two narrow voltage pulse injections are applied in sequence. In this method the machine parameters and phase current detection are not required. The method is suitable for low-cost SRM-drive applications. The experimental results were carried out on a 6/4 poles three-phase SRM and show the satisfactory accuracy of the proposed initial rotor position estimation.","PeriodicalId":166704,"journal":{"name":"2007 7th International Conference on Power Electronics and Drive Systems","volume":"21 5","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121019110","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 : 2007-11-01DOI: 10.1109/PEDS.2007.4487895
N. Mondal, S. Biswas, S. Sinha, N. K. Deb
Diode bridge rectifiers with capacitor-input filters are commonly used at the input stage for power supplies operating from the single phase mains input, as they provide a cost effective solution in the lower power range. However, as there is no simple design rule existing in published literature that gives a reasonable prediction based on real-life conditions, the design of the rectifier-capacitor stage is still a trial and error or based upon experience. This paper presents an approximate (but simple) solution based upon empirical relations, for the prediction of the currents involved and specifies the capacitor, so that it can be selected.
{"title":"Selection of the Filter Capacitor for Power Supplies using 1-Phase Diode Rectifier","authors":"N. Mondal, S. Biswas, S. Sinha, N. K. Deb","doi":"10.1109/PEDS.2007.4487895","DOIUrl":"https://doi.org/10.1109/PEDS.2007.4487895","url":null,"abstract":"Diode bridge rectifiers with capacitor-input filters are commonly used at the input stage for power supplies operating from the single phase mains input, as they provide a cost effective solution in the lower power range. However, as there is no simple design rule existing in published literature that gives a reasonable prediction based on real-life conditions, the design of the rectifier-capacitor stage is still a trial and error or based upon experience. This paper presents an approximate (but simple) solution based upon empirical relations, for the prediction of the currents involved and specifies the capacitor, so that it can be selected.","PeriodicalId":166704,"journal":{"name":"2007 7th International Conference on Power Electronics and Drive Systems","volume":"62 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125828255","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 : 2007-11-01DOI: 10.1109/PEDS.2007.4487843
D. Svechkarenko, A. Cosic, J. Soulard, C. Sadarangani
The higher specific torque and power density of a transverse flux machine (TFM) in comparison to a conventional machine makes it a promising energy converter in various applications. In this paper, a free piston energy converter and a direct-driven wind turbine are considered. The analytical investigation of the novel TFM topology applied in these two cases is presented. The cogging torque is evaluated by use of a three-dimensional finite element method. The results of simulating generators rated in the range of 3-12 MW are discussed. Manufacturing of a linear prototype is presented.
{"title":"Transverse Flux Machines for Sustainable Development - Road Transportation and Power Generation","authors":"D. Svechkarenko, A. Cosic, J. Soulard, C. Sadarangani","doi":"10.1109/PEDS.2007.4487843","DOIUrl":"https://doi.org/10.1109/PEDS.2007.4487843","url":null,"abstract":"The higher specific torque and power density of a transverse flux machine (TFM) in comparison to a conventional machine makes it a promising energy converter in various applications. In this paper, a free piston energy converter and a direct-driven wind turbine are considered. The analytical investigation of the novel TFM topology applied in these two cases is presented. The cogging torque is evaluated by use of a three-dimensional finite element method. The results of simulating generators rated in the range of 3-12 MW are discussed. Manufacturing of a linear prototype is presented.","PeriodicalId":166704,"journal":{"name":"2007 7th International Conference on Power Electronics and Drive Systems","volume":"40 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126658456","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 : 2007-11-01DOI: 10.1109/PEDS.2007.4487920
Y. Tomihisa, H. Nakanishi, T. Sato, T. Nabeshima, K. Nishijima, T. Nakano
This paper presents a simulation method for the analysis of switching power converters. In the method, numerical Fourier transform is employed to obtain fast results. A circuit simulator using the proposed simulation method is implemented and demonstrated with a ripple regulator. The simulation results have good agreements with the experiments. The proposed method is applicable to any circuits including switching operation such as ripple regulators.
{"title":"Simulation Program for Switching Converters Using Numerical Fourier Transform","authors":"Y. Tomihisa, H. Nakanishi, T. Sato, T. Nabeshima, K. Nishijima, T. Nakano","doi":"10.1109/PEDS.2007.4487920","DOIUrl":"https://doi.org/10.1109/PEDS.2007.4487920","url":null,"abstract":"This paper presents a simulation method for the analysis of switching power converters. In the method, numerical Fourier transform is employed to obtain fast results. A circuit simulator using the proposed simulation method is implemented and demonstrated with a ripple regulator. The simulation results have good agreements with the experiments. The proposed method is applicable to any circuits including switching operation such as ripple regulators.","PeriodicalId":166704,"journal":{"name":"2007 7th International Conference on Power Electronics and Drive Systems","volume":"87 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122597757","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 : 2007-11-01DOI: 10.1109/PEDS.2007.4487720
Yi-Hwa Liu, S. Wang, R. Leou
Contactless energy transmission system boasts the advantages such as safety, reliability, low maintenance, and long product life. However, with no connections between the input side and output side, the control of the power converters will be made difficult without the knowledge of the secondary voltage and current information. In this paper, a novel primary-side controlled contactless battery charger is proposed. Analysis of the presented system as well as the software algorithm will be provided in detail. The advantages of the proposed system include simplified design and reduced size of secondary side. Simulation and experimental results are then provided to validate the correctness of the proposed system.
{"title":"A novel primary-side controlled contactless battery charger","authors":"Yi-Hwa Liu, S. Wang, R. Leou","doi":"10.1109/PEDS.2007.4487720","DOIUrl":"https://doi.org/10.1109/PEDS.2007.4487720","url":null,"abstract":"Contactless energy transmission system boasts the advantages such as safety, reliability, low maintenance, and long product life. However, with no connections between the input side and output side, the control of the power converters will be made difficult without the knowledge of the secondary voltage and current information. In this paper, a novel primary-side controlled contactless battery charger is proposed. Analysis of the presented system as well as the software algorithm will be provided in detail. The advantages of the proposed system include simplified design and reduced size of secondary side. Simulation and experimental results are then provided to validate the correctness of the proposed system.","PeriodicalId":166704,"journal":{"name":"2007 7th International Conference on Power Electronics and Drive Systems","volume":"27 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114278727","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 : 2007-11-01DOI: 10.1109/PEDS.2007.4487913
Gao Shuang, N. Cheung, K. Cheng, Dong Lei, Liao Xiaozhong
This paper discusses skid steering applied to four wheel drive electric vehicles. In such vehicles, steering is achieved by differentially varying the speeds of the lines of wheels on different sides of the vehicle in order to induce yaw. Skid steer wheeled vehicles require elaborate tire model, so author choose the unite semi-empirical tire model. From this model, longitudinal and lateral tire force can be calculated by slip ratio directly. The vehicle model has 3-DOF, longitudinal, lateral and yaw direction, irrespective of suspension. Induction motor is chosen as the driven motor, and the control method is rotor flux field oriented vector control. To satisfy the requirement of the turn radius, the longitudinal slip must be controlled, so a method of slip limitation feedback is used in the simulation. When the vehicle is turning on a slippery surface, because of the drop at the coefficient of road adhesion, the drive wheels may slip. The traction control system reduces the engine torque and brings the slipping wheels into the desirable skid range. Some simulation results about the steering accuracy and maneuverability are given in the paper.
{"title":"Skid Steering in 4-Wheel-Drive Electric Vehicle","authors":"Gao Shuang, N. Cheung, K. Cheng, Dong Lei, Liao Xiaozhong","doi":"10.1109/PEDS.2007.4487913","DOIUrl":"https://doi.org/10.1109/PEDS.2007.4487913","url":null,"abstract":"This paper discusses skid steering applied to four wheel drive electric vehicles. In such vehicles, steering is achieved by differentially varying the speeds of the lines of wheels on different sides of the vehicle in order to induce yaw. Skid steer wheeled vehicles require elaborate tire model, so author choose the unite semi-empirical tire model. From this model, longitudinal and lateral tire force can be calculated by slip ratio directly. The vehicle model has 3-DOF, longitudinal, lateral and yaw direction, irrespective of suspension. Induction motor is chosen as the driven motor, and the control method is rotor flux field oriented vector control. To satisfy the requirement of the turn radius, the longitudinal slip must be controlled, so a method of slip limitation feedback is used in the simulation. When the vehicle is turning on a slippery surface, because of the drop at the coefficient of road adhesion, the drive wheels may slip. The traction control system reduces the engine torque and brings the slipping wheels into the desirable skid range. Some simulation results about the steering accuracy and maneuverability are given in the paper.","PeriodicalId":166704,"journal":{"name":"2007 7th International Conference on Power Electronics and Drive Systems","volume":"10 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114497670","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 : 2007-11-01DOI: 10.1109/PEDS.2007.4487939
T. Tayjasanant, K. Yossombut, P. Sawatpipat
This paper presents a graphic user interface (GUI)-based program for voltage sag calculation. The GUI feature provides the user with visual interaction and facilitates the analysis. The analysis is based on the bus impedance matrix and the symmetrical-components transformation. Voltages during a fault at various buses and percentages of sag are calculated. Simulation results on 13- bus balanced industrial distribution system are summarized.
{"title":"A Graphic User Interface-based Program for Voltage Sag Calculation","authors":"T. Tayjasanant, K. Yossombut, P. Sawatpipat","doi":"10.1109/PEDS.2007.4487939","DOIUrl":"https://doi.org/10.1109/PEDS.2007.4487939","url":null,"abstract":"This paper presents a graphic user interface (GUI)-based program for voltage sag calculation. The GUI feature provides the user with visual interaction and facilitates the analysis. The analysis is based on the bus impedance matrix and the symmetrical-components transformation. Voltages during a fault at various buses and percentages of sag are calculated. Simulation results on 13- bus balanced industrial distribution system are summarized.","PeriodicalId":166704,"journal":{"name":"2007 7th International Conference on Power Electronics and Drive Systems","volume":"116 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114592039","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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