Pub Date : 2001-08-18DOI: 10.1109/ICEMS.2001.970620
Yang Junhua, Pan Guanhai
This paper analyses the effects of time constants on frequency-response characteristics and proposes the discrepancies of these effects. It is also points out some key points to process these constants and illustrates the methods by a prototype.
{"title":"The effects of time constants of synchronous machines on frequency-response characteristics","authors":"Yang Junhua, Pan Guanhai","doi":"10.1109/ICEMS.2001.970620","DOIUrl":"https://doi.org/10.1109/ICEMS.2001.970620","url":null,"abstract":"This paper analyses the effects of time constants on frequency-response characteristics and proposes the discrepancies of these effects. It is also points out some key points to process these constants and illustrates the methods by a prototype.","PeriodicalId":143007,"journal":{"name":"ICEMS'2001. Proceedings of the Fifth International Conference on Electrical Machines and Systems (IEEE Cat. No.01EX501)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2001-08-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126528949","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.2001.971889
J. Ryu, Yan Xiuke, C. Koh, Xie Dexin, S. Hahn
A 3D adaptive finite element analysis algorithm is developed for precise electric machine force and torque calculation. The edge elements are used in the analysis, and the nodal force method is introduced for force and torque calculation, respectively. The bisection method is adopted to refine the elements that have big local error, which is estimated using the field continuity condition at the interface between the adjacent elements. Through 2D and 3D numerical examples the validity of the developed algorithm is proved.
{"title":"3D adaptive finite element method with edge elements [for machine calculations]","authors":"J. Ryu, Yan Xiuke, C. Koh, Xie Dexin, S. Hahn","doi":"10.1109/ICEMS.2001.971889","DOIUrl":"https://doi.org/10.1109/ICEMS.2001.971889","url":null,"abstract":"A 3D adaptive finite element analysis algorithm is developed for precise electric machine force and torque calculation. The edge elements are used in the analysis, and the nodal force method is introduced for force and torque calculation, respectively. The bisection method is adopted to refine the elements that have big local error, which is estimated using the field continuity condition at the interface between the adjacent elements. Through 2D and 3D numerical examples the validity of the developed algorithm is proved.","PeriodicalId":143007,"journal":{"name":"ICEMS'2001. Proceedings of the Fifth International Conference on Electrical Machines and Systems (IEEE Cat. No.01EX501)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2001-08-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121404387","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.2001.971810
Zhang Cunshan, Tianpei Feng
In this paper, the defects of traditional permanent magnetic generator were indicated and the measures for improving the output characteristic of permanent magnetic generator were brought forward. The experiments on a newly developed prototype show that the improved permanent magnetic generator have much better output characteristic, high reliability and favorable performance/price ratio.
{"title":"Research on improving permanent magnetic generator output characteristic","authors":"Zhang Cunshan, Tianpei Feng","doi":"10.1109/ICEMS.2001.971810","DOIUrl":"https://doi.org/10.1109/ICEMS.2001.971810","url":null,"abstract":"In this paper, the defects of traditional permanent magnetic generator were indicated and the measures for improving the output characteristic of permanent magnetic generator were brought forward. The experiments on a newly developed prototype show that the improved permanent magnetic generator have much better output characteristic, high reliability and favorable performance/price ratio.","PeriodicalId":143007,"journal":{"name":"ICEMS'2001. Proceedings of the Fifth International Conference on Electrical Machines and Systems (IEEE Cat. No.01EX501)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2001-08-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121039903","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.2001.971778
Ren Haipeng, L. Ding
The paper presents a cost effective and increased performance position servo system using the TMS320F240 digital signal processor (DSP) produced by Texas Instruments as microprocessor and brushless direct current motor (BLDCM) as executor. In order to make up for the drawback of conventional PID controls, the fuzzy PID is employed. The result of simulations and experiments has confirmed that the whole system is simple and reliable; the robustness of the system is improved by using fuzzy PID.
{"title":"A novel digital position servo system using DSP and fuzzy PID","authors":"Ren Haipeng, L. Ding","doi":"10.1109/ICEMS.2001.971778","DOIUrl":"https://doi.org/10.1109/ICEMS.2001.971778","url":null,"abstract":"The paper presents a cost effective and increased performance position servo system using the TMS320F240 digital signal processor (DSP) produced by Texas Instruments as microprocessor and brushless direct current motor (BLDCM) as executor. In order to make up for the drawback of conventional PID controls, the fuzzy PID is employed. The result of simulations and experiments has confirmed that the whole system is simple and reliable; the robustness of the system is improved by using fuzzy PID.","PeriodicalId":143007,"journal":{"name":"ICEMS'2001. Proceedings of the Fifth International Conference on Electrical Machines and Systems (IEEE Cat. No.01EX501)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2001-08-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123772679","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.2001.970733
Wang Chengyuan, Li Haodong, Xia Jiakuan
According to the characteristic of alternating current permanent magnet synchronous motor (PMSM), this paper presents a practical solution of permanent magnet motor intelligent vector control using the TMS320F240 digital signal processor (DSP). Here DSP can finish fully digital control of the space angle and amplitude components of stator field together with a single neuron operation. It concretely elucidates implementation of both intelligent vector control system and producing space vector pulse width modulation (SVPWM) wave. Experimental results show that the system has good real-time quality and feasibility, and the chip has notable advantages of application in the digital motor control system.
{"title":"Study of intelligent vector control system based on TMS320F240","authors":"Wang Chengyuan, Li Haodong, Xia Jiakuan","doi":"10.1109/ICEMS.2001.970733","DOIUrl":"https://doi.org/10.1109/ICEMS.2001.970733","url":null,"abstract":"According to the characteristic of alternating current permanent magnet synchronous motor (PMSM), this paper presents a practical solution of permanent magnet motor intelligent vector control using the TMS320F240 digital signal processor (DSP). Here DSP can finish fully digital control of the space angle and amplitude components of stator field together with a single neuron operation. It concretely elucidates implementation of both intelligent vector control system and producing space vector pulse width modulation (SVPWM) wave. Experimental results show that the system has good real-time quality and feasibility, and the chip has notable advantages of application in the digital motor control system.","PeriodicalId":143007,"journal":{"name":"ICEMS'2001. Proceedings of the Fifth International Conference on Electrical Machines and Systems (IEEE Cat. No.01EX501)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2001-08-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121399634","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.2001.971793
Sun Wei, W. Yao-nan
An adaptive fuzzy controller is developed for AC servo system to guarantee both global stability and performance. AC motor dynamics under consideration may include large nonlinear uncertainties, such as nonlinear load variations. The controller output method (COEM) is introduced and applied to the design of adaptive fuzzy control system. The method employs a gradient descent algorithm to minimize a cost function that is based on the error of the controller output. The cost function can be minimized through adapting some or all of the parameters of fuzzy controller. The proposed adaptive fuzzy controller is applied to a AC servo control problem and compared with a standard fuzzy controller. The simulation results show that the proposed control is effective and yields superior performance.
{"title":"An adaptive fuzzy control for AC servo system","authors":"Sun Wei, W. Yao-nan","doi":"10.1109/ICEMS.2001.971793","DOIUrl":"https://doi.org/10.1109/ICEMS.2001.971793","url":null,"abstract":"An adaptive fuzzy controller is developed for AC servo system to guarantee both global stability and performance. AC motor dynamics under consideration may include large nonlinear uncertainties, such as nonlinear load variations. The controller output method (COEM) is introduced and applied to the design of adaptive fuzzy control system. The method employs a gradient descent algorithm to minimize a cost function that is based on the error of the controller output. The cost function can be minimized through adapting some or all of the parameters of fuzzy controller. The proposed adaptive fuzzy controller is applied to a AC servo control problem and compared with a standard fuzzy controller. The simulation results show that the proposed control is effective and yields superior performance.","PeriodicalId":143007,"journal":{"name":"ICEMS'2001. Proceedings of the Fifth International Conference on Electrical Machines and Systems (IEEE Cat. No.01EX501)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2001-08-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121482549","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.2001.970660
Luo Logfu, Wang Ziya, Tong Tiaosheng
In this paper, the layout of the locomotive main transformer windings is given at the beginning. Then the six layout modes of its double-winding transformer are set forward. It is impossible to calculate accurately all kinds of short-circuit impedance of the double-winding transformer with the usual method. This paper solves the impedance with the finite element method (FEM). This paper describes the electromagnetic field theoretical bases, introduces two sets of FEM to solve the impedance, and finally gives the magnetic flux line of the transformer's symmetric section and calculation results. Experimental results show that the solved results with FEM is correct.
{"title":"The method solving short-circuit impedance between two interleave windings in the multi-winding core-type transformer with finite element method","authors":"Luo Logfu, Wang Ziya, Tong Tiaosheng","doi":"10.1109/ICEMS.2001.970660","DOIUrl":"https://doi.org/10.1109/ICEMS.2001.970660","url":null,"abstract":"In this paper, the layout of the locomotive main transformer windings is given at the beginning. Then the six layout modes of its double-winding transformer are set forward. It is impossible to calculate accurately all kinds of short-circuit impedance of the double-winding transformer with the usual method. This paper solves the impedance with the finite element method (FEM). This paper describes the electromagnetic field theoretical bases, introduces two sets of FEM to solve the impedance, and finally gives the magnetic flux line of the transformer's symmetric section and calculation results. Experimental results show that the solved results with FEM is correct.","PeriodicalId":143007,"journal":{"name":"ICEMS'2001. Proceedings of the Fifth International Conference on Electrical Machines and Systems (IEEE Cat. No.01EX501)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2001-08-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116552377","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.2001.970688
Cai Zhiyuan, Ma Shaohua, Wang Jian, Li Wei, Wang Er-zhi
In this paper, an industrial computer control system of 2000 kV HV power frequency testing transformer is presented, by which, a whole testing process can automatically perform according to the testing criterion or the initialization defined by an user. It can carry out power frequency withstand voltage tests and partial discharge tests as well as user-defined tests, and the test accuracy and the efficiency are improved largely due to using an industrial computer as the center of the whole control system. The signals acquisition and process methods are described, and both of the hardware structure and software design are also presented in this paper. The control system has been used for one year with success.
{"title":"Industrial computer control system of 2000 kV high voltage power frequency testing transformer","authors":"Cai Zhiyuan, Ma Shaohua, Wang Jian, Li Wei, Wang Er-zhi","doi":"10.1109/ICEMS.2001.970688","DOIUrl":"https://doi.org/10.1109/ICEMS.2001.970688","url":null,"abstract":"In this paper, an industrial computer control system of 2000 kV HV power frequency testing transformer is presented, by which, a whole testing process can automatically perform according to the testing criterion or the initialization defined by an user. It can carry out power frequency withstand voltage tests and partial discharge tests as well as user-defined tests, and the test accuracy and the efficiency are improved largely due to using an industrial computer as the center of the whole control system. The signals acquisition and process methods are described, and both of the hardware structure and software design are also presented in this paper. The control system has been used for one year with success.","PeriodicalId":143007,"journal":{"name":"ICEMS'2001. Proceedings of the Fifth International Conference on Electrical Machines and Systems (IEEE Cat. No.01EX501)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2001-08-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125232340","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.2001.971788
Yang Fu, Liangyu Zhuang, Guo Zhuang, Yang Peng, Wang Qiaoling
In this paper, the authors introduce the composition of a magnetic suspension system and its principles, and give its mathematical model. The system adopts a DSP to deal with the data. The H/sub /spl infin// fuzzy controller is designed and the results of its simulation and actual control are given.
{"title":"Magnetic bearing control using H/sub /spl infin// fuzzy logic","authors":"Yang Fu, Liangyu Zhuang, Guo Zhuang, Yang Peng, Wang Qiaoling","doi":"10.1109/ICEMS.2001.971788","DOIUrl":"https://doi.org/10.1109/ICEMS.2001.971788","url":null,"abstract":"In this paper, the authors introduce the composition of a magnetic suspension system and its principles, and give its mathematical model. The system adopts a DSP to deal with the data. The H/sub /spl infin// fuzzy controller is designed and the results of its simulation and actual control are given.","PeriodicalId":143007,"journal":{"name":"ICEMS'2001. Proceedings of the Fifth International Conference on Electrical Machines and Systems (IEEE Cat. No.01EX501)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2001-08-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122924545","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.2001.970720
Ma Xianmin, Chen Quan-shi
A novel propulsion system scheme using a soft-switched high frequency AC-AC converter for an electric vehicle is proposed in this paper. The system consists of three parts: high frequency inverter, high frequency transformer and soft-switched high frequency AC-AC converter. The DC voltage of battery firstly is inverted into 20 kHz high frequency AC voltage, which is boosted and isolated by transformer, and then the output voltage of the transformer is served as voltage source to feed the AC-AC converter for driving the motor. Owing to using zero voltage switching technique, the propulsion system has advantages of high efficiency, high energy density, small volume and light weight.
{"title":"A novel scheme of propulsion system using soft-switched high frequency AC-AC converter for electric vehicle","authors":"Ma Xianmin, Chen Quan-shi","doi":"10.1109/ICEMS.2001.970720","DOIUrl":"https://doi.org/10.1109/ICEMS.2001.970720","url":null,"abstract":"A novel propulsion system scheme using a soft-switched high frequency AC-AC converter for an electric vehicle is proposed in this paper. The system consists of three parts: high frequency inverter, high frequency transformer and soft-switched high frequency AC-AC converter. The DC voltage of battery firstly is inverted into 20 kHz high frequency AC voltage, which is boosted and isolated by transformer, and then the output voltage of the transformer is served as voltage source to feed the AC-AC converter for driving the motor. Owing to using zero voltage switching technique, the propulsion system has advantages of high efficiency, high energy density, small volume and light weight.","PeriodicalId":143007,"journal":{"name":"ICEMS'2001. Proceedings of the Fifth International Conference on Electrical Machines and Systems (IEEE Cat. No.01EX501)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2001-08-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121785045","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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