Pub Date : 2001-08-18DOI: 10.1109/ICEMS.2001.970610
Chang-soon Park
Condenser motors are widely used because the motor needs the 1-phase voltage source we have everywhere. The single phase motor creates an elliptical rotating field that may cause some problems such as noise, vibrations and more losses that bring low efficiency and a rise in temperature. This paper describes optimum design of the motor in consideration of the maximum torque, efficiency, swing torque and starting torque for a sewing machine.
{"title":"A study on the efficiency improvement and suppression of rising temperature of the 1-phase condenser motor","authors":"Chang-soon Park","doi":"10.1109/ICEMS.2001.970610","DOIUrl":"https://doi.org/10.1109/ICEMS.2001.970610","url":null,"abstract":"Condenser motors are widely used because the motor needs the 1-phase voltage source we have everywhere. The single phase motor creates an elliptical rotating field that may cause some problems such as noise, vibrations and more losses that bring low efficiency and a rise in temperature. This paper describes optimum design of the motor in consideration of the maximum torque, efficiency, swing torque and starting torque for a sewing machine.","PeriodicalId":143007,"journal":{"name":"ICEMS'2001. Proceedings of the Fifth International Conference on Electrical Machines and Systems (IEEE Cat. No.01EX501)","volume":"54 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2001-08-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128763007","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 : 2001-08-18DOI: 10.1109/ICEMS.2001.971842
Jiangheng Liu, T. Koseki
Electromagnetic suspension (EMS) has been widely used in many industrial fields because of various advantages in practical use. The U-type magnets are often used to generate the levitation force in the EMS system. This conventional electromagnet, however, can only control one degree-of-freedom. It cannot construct a levitation system solely by itself. A four-pole type yoke hybrid electromagnet is proposed instead of the usual U-type magnet and its magnetic levitation control is studied in this paper. The basic structure and characteristics of the proposed magnet are described first. Next the control system is designed. Luenberger observer, only using gap sensors, is applied to realize zero-power control. The semi-zero-power control with a disturbance observer is proposed to improve the performance, as well as the robustness, of the control system. The ideas of coordination with linear motor are discussed. Finally, the simulation results and corresponding experiments have been presented.
{"title":"3 degrees of freedom control of semi-zero-power magnetic levitation suitable for two-dimensional linear motor","authors":"Jiangheng Liu, T. Koseki","doi":"10.1109/ICEMS.2001.971842","DOIUrl":"https://doi.org/10.1109/ICEMS.2001.971842","url":null,"abstract":"Electromagnetic suspension (EMS) has been widely used in many industrial fields because of various advantages in practical use. The U-type magnets are often used to generate the levitation force in the EMS system. This conventional electromagnet, however, can only control one degree-of-freedom. It cannot construct a levitation system solely by itself. A four-pole type yoke hybrid electromagnet is proposed instead of the usual U-type magnet and its magnetic levitation control is studied in this paper. The basic structure and characteristics of the proposed magnet are described first. Next the control system is designed. Luenberger observer, only using gap sensors, is applied to realize zero-power control. The semi-zero-power control with a disturbance observer is proposed to improve the performance, as well as the robustness, of the control system. The ideas of coordination with linear motor are discussed. Finally, the simulation results and corresponding experiments have been presented.","PeriodicalId":143007,"journal":{"name":"ICEMS'2001. Proceedings of the Fifth International Conference on Electrical Machines and Systems (IEEE Cat. No.01EX501)","volume":"26 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2001-08-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117130519","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 : 2001-08-18DOI: 10.1109/ICEMS.2001.970723
Lin Chengwu, Z. Jianguang, Wang Fengxiang
This paper puts forward a multi-functional power converter design based on 8XCI96MC single-chip computer control. The converter subtly integrates a rectifier, chopper and inverter, which not only reduces cost and size but also extends the functions of the power converter. Four different operational models of the converter are analyzed, and some experiment results are presented in the paper.
{"title":"A multi-functional converter controlled by 8XC196MC","authors":"Lin Chengwu, Z. Jianguang, Wang Fengxiang","doi":"10.1109/ICEMS.2001.970723","DOIUrl":"https://doi.org/10.1109/ICEMS.2001.970723","url":null,"abstract":"This paper puts forward a multi-functional power converter design based on 8XCI96MC single-chip computer control. The converter subtly integrates a rectifier, chopper and inverter, which not only reduces cost and size but also extends the functions of the power converter. Four different operational models of the converter are analyzed, and some experiment results are presented in the paper.","PeriodicalId":143007,"journal":{"name":"ICEMS'2001. Proceedings of the Fifth International Conference on Electrical Machines and Systems (IEEE Cat. No.01EX501)","volume":"13 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2001-08-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125696403","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 : 2001-08-18DOI: 10.1109/ICEMS.2001.970729
Xiaohua Jiang, W. Shen, Xiaohong Huang
An inverter designed for constant V/F air-conditioner motor drives is introduced. A modified space-vector PWM method is studied so that the linearity of the inverter can be improved when modulation index M>1. Because constant V/F drivers for air-conditioner motors operate in a wide range output frequency, the synthesis of accurate output voltages has became an important issue. To resolve the problem, the well known instantaneous average voltage method is used for compensating for blanking time and input DC-link voltage ripple. The inverter is controlled by a M37705 single chip microprocessor and has been successfully used in A.C. compressor speed control of a home central air-conditioner system.
{"title":"High performance space-vector PWM inverters using nonlinear voltage gain correction","authors":"Xiaohua Jiang, W. Shen, Xiaohong Huang","doi":"10.1109/ICEMS.2001.970729","DOIUrl":"https://doi.org/10.1109/ICEMS.2001.970729","url":null,"abstract":"An inverter designed for constant V/F air-conditioner motor drives is introduced. A modified space-vector PWM method is studied so that the linearity of the inverter can be improved when modulation index M>1. Because constant V/F drivers for air-conditioner motors operate in a wide range output frequency, the synthesis of accurate output voltages has became an important issue. To resolve the problem, the well known instantaneous average voltage method is used for compensating for blanking time and input DC-link voltage ripple. The inverter is controlled by a M37705 single chip microprocessor and has been successfully used in A.C. compressor speed control of a home central air-conditioner system.","PeriodicalId":143007,"journal":{"name":"ICEMS'2001. Proceedings of the Fifth International Conference on Electrical Machines and Systems (IEEE Cat. No.01EX501)","volume":"5 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2001-08-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114381616","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 : 2001-08-18DOI: 10.1109/ICEMS.2001.970751
Zhuo-Fang, Wang-Yue, Li-Hui, Wang-Zhao'an
An active power filter for three-phase four-wire power systems is introduced in this paper. The compensation principle and structure of its main control circuits are given. The basic operation principle of the active power filter is analyzed, which is different from that of active power filters used in three-phase three-wire systems. Experimental results prove the effectiveness of the proposed control method and indicate that the active power filter has good compensation characteristics.
{"title":"Active power filter used for three-phase four-wire system","authors":"Zhuo-Fang, Wang-Yue, Li-Hui, Wang-Zhao'an","doi":"10.1109/ICEMS.2001.970751","DOIUrl":"https://doi.org/10.1109/ICEMS.2001.970751","url":null,"abstract":"An active power filter for three-phase four-wire power systems is introduced in this paper. The compensation principle and structure of its main control circuits are given. The basic operation principle of the active power filter is analyzed, which is different from that of active power filters used in three-phase three-wire systems. Experimental results prove the effectiveness of the proposed control method and indicate that the active power filter has good compensation characteristics.","PeriodicalId":143007,"journal":{"name":"ICEMS'2001. Proceedings of the Fifth International Conference on Electrical Machines and Systems (IEEE Cat. No.01EX501)","volume":"96 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2001-08-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121905037","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 : 2001-08-18DOI: 10.1109/ICEMS.2001.971774
N. Cheung, Yuan-rui Chen, Jie Wu
A robust H∞ controller for permanent magnet linear motor (PMLM) in transportation systems is designed in this paper. First, the state space equations of the motor are established. Then the H∞ control theory is applied to design a robust controller which allows mass variation of the moving part ranging from 0 to 100 percent of nominal load. The simulation and experimental results show that the system can achieve robust performance under either no load or nominal load.
{"title":"H∞ control of permanent magnet linear motor in transportation systems","authors":"N. Cheung, Yuan-rui Chen, Jie Wu","doi":"10.1109/ICEMS.2001.971774","DOIUrl":"https://doi.org/10.1109/ICEMS.2001.971774","url":null,"abstract":"A robust H∞ controller for permanent magnet linear motor (PMLM) in transportation systems is designed in this paper. First, the state space equations of the motor are established. Then the H∞ control theory is applied to design a robust controller which allows mass variation of the moving part ranging from 0 to 100 percent of nominal load. The simulation and experimental results show that the system can achieve robust performance under either no load or nominal load.","PeriodicalId":143007,"journal":{"name":"ICEMS'2001. Proceedings of the Fifth International Conference on Electrical Machines and Systems (IEEE Cat. No.01EX501)","volume":"19 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2001-08-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122577657","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 : 2001-08-18DOI: 10.1109/ICEMS.2001.971876
Chen Jian, Yuan Zhenmin
A neural network using the backpropagation algorithm is developed in this paper to identify the error patterns of the method of linear interpolation. The relationship between the input samples and the output error patterns is then established, which can be used to improve the accuracy of stepping motor design significantly.
{"title":"Application of artificial neural network in optimal design of step motor","authors":"Chen Jian, Yuan Zhenmin","doi":"10.1109/ICEMS.2001.971876","DOIUrl":"https://doi.org/10.1109/ICEMS.2001.971876","url":null,"abstract":"A neural network using the backpropagation algorithm is developed in this paper to identify the error patterns of the method of linear interpolation. The relationship between the input samples and the output error patterns is then established, which can be used to improve the accuracy of stepping motor design significantly.","PeriodicalId":143007,"journal":{"name":"ICEMS'2001. Proceedings of the Fifth International Conference on Electrical Machines and Systems (IEEE Cat. No.01EX501)","volume":"2 2 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2001-08-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126159895","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 : 2001-08-18DOI: 10.1109/ICEMS.2001.970671
Qi Yuting, Yang Xuechang
A transfer function method is being developed for both the impulse test and monitoring of power transformers. A three-phase equivalent circuit of power transformer based on the Bergeron method is created in this paper. The influences of input signals with different frequency characteristics on transfer function calculation are analyzed and a suitable input is selected to perform the evaluation of transformers' insulation conditions by transfer function method. Three different types of transformer faults are simulated in this paper. The results show the potential contributions to insulation fault monitoring and location.
{"title":"Insulation fault monitoring of power transformer by transfer function method","authors":"Qi Yuting, Yang Xuechang","doi":"10.1109/ICEMS.2001.970671","DOIUrl":"https://doi.org/10.1109/ICEMS.2001.970671","url":null,"abstract":"A transfer function method is being developed for both the impulse test and monitoring of power transformers. A three-phase equivalent circuit of power transformer based on the Bergeron method is created in this paper. The influences of input signals with different frequency characteristics on transfer function calculation are analyzed and a suitable input is selected to perform the evaluation of transformers' insulation conditions by transfer function method. Three different types of transformer faults are simulated in this paper. The results show the potential contributions to insulation fault monitoring and location.","PeriodicalId":143007,"journal":{"name":"ICEMS'2001. Proceedings of the Fifth International Conference on Electrical Machines and Systems (IEEE Cat. No.01EX501)","volume":"52 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2001-08-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126235665","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 : 2001-08-18DOI: 10.1109/ICEMS.2001.970626
Cheng Shiyuan
In this paper, ventilation systems of a large hydro-generator are analyzed. A new method named network analyses is presented to calculate ventilation circuits. The general equations are obtained by the electrical network theory. The equations are solved numerically with the successive iterative method. A general program of FORTRAN language is worked out. The ventilation system of the hydrogenerator in Sanxia power station is calculated with the network analyses method.
{"title":"Network analyses of ventilation system for large hydrogenerator","authors":"Cheng Shiyuan","doi":"10.1109/ICEMS.2001.970626","DOIUrl":"https://doi.org/10.1109/ICEMS.2001.970626","url":null,"abstract":"In this paper, ventilation systems of a large hydro-generator are analyzed. A new method named network analyses is presented to calculate ventilation circuits. The general equations are obtained by the electrical network theory. The equations are solved numerically with the successive iterative method. A general program of FORTRAN language is worked out. The ventilation system of the hydrogenerator in Sanxia power station is calculated with the network analyses method.","PeriodicalId":143007,"journal":{"name":"ICEMS'2001. Proceedings of the Fifth International Conference on Electrical Machines and Systems (IEEE Cat. No.01EX501)","volume":"20 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2001-08-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130085529","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 : 2001-08-18DOI: 10.1109/ICEMS.2001.971886
Sun Jianzhong, Bai Fengxian, Tang Renyuan
Improvements on an intelligent simulated annealing (ISA) algorithm for the optimal design of electromagnetic devices is investigated in this paper. By using a fuzzy inference method, the ISA can not only reject infeasible design schemes before design calculation, but can also circumscribe the whereabouts of the global optimum and automatically narrow the search scope. In case of making improper decisions in ISA searching, a criterion of recognizing error judgment is developed. The algorithm is applied to the optimal design of induction motors used in electric locomotives, and satisfactory results are achieved.
{"title":"Optimization design of special induction motors using improved intelligent simulated annealing algorithm","authors":"Sun Jianzhong, Bai Fengxian, Tang Renyuan","doi":"10.1109/ICEMS.2001.971886","DOIUrl":"https://doi.org/10.1109/ICEMS.2001.971886","url":null,"abstract":"Improvements on an intelligent simulated annealing (ISA) algorithm for the optimal design of electromagnetic devices is investigated in this paper. By using a fuzzy inference method, the ISA can not only reject infeasible design schemes before design calculation, but can also circumscribe the whereabouts of the global optimum and automatically narrow the search scope. In case of making improper decisions in ISA searching, a criterion of recognizing error judgment is developed. The algorithm is applied to the optimal design of induction motors used in electric locomotives, and satisfactory results are achieved.","PeriodicalId":143007,"journal":{"name":"ICEMS'2001. Proceedings of the Fifth International Conference on Electrical Machines and Systems (IEEE Cat. No.01EX501)","volume":"2 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2001-08-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129197131","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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