Pub Date : 2001-08-18DOI: 10.1109/ICEMS.2001.971905
Liu Chuang, Yan Yangguang
A novel current chopping strategy for a switched reluctance generator (SRG), a full conducted current chopping (FCCC) scheme, is presented in this paper. According to the characteristics of the phase current waveform of SRG generating operation, it can generate under sensorless conditions without additional circuitry or position signal algorithms. Simulation demonstrates the feasibility of this scheme in detail. Experimental results of a 6 kW 6/4 configuration SRG shows its simplicity and high reliability with little decrease in efficiency.
{"title":"Realization of SRG position sensorless technique with current chopping mode","authors":"Liu Chuang, Yan Yangguang","doi":"10.1109/ICEMS.2001.971905","DOIUrl":"https://doi.org/10.1109/ICEMS.2001.971905","url":null,"abstract":"A novel current chopping strategy for a switched reluctance generator (SRG), a full conducted current chopping (FCCC) scheme, is presented in this paper. According to the characteristics of the phase current waveform of SRG generating operation, it can generate under sensorless conditions without additional circuitry or position signal algorithms. Simulation demonstrates the feasibility of this scheme in detail. Experimental results of a 6 kW 6/4 configuration SRG shows its simplicity and high reliability with little decrease in efficiency.","PeriodicalId":143007,"journal":{"name":"ICEMS'2001. Proceedings of the Fifth International Conference on Electrical Machines and Systems (IEEE Cat. No.01EX501)","volume":"70 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":"127713957","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.2001.971789
Hu Chao, Che Xiangguang
To ensure uniform line arrangement and line tension in the line winding process of automobile belt manufacture, a new microcomputer drive system has been developed. It includes an industrial PC, a shaft speed modulating system using an inverter, a step-motor control system for synchronous linear movement of line wheel and a line tension control system. Through algorithms and programs, it can realize all control actions, and data recording, retrieving and printing.
{"title":"Electrical drive system for winding shaper of automobile belt","authors":"Hu Chao, Che Xiangguang","doi":"10.1109/ICEMS.2001.971789","DOIUrl":"https://doi.org/10.1109/ICEMS.2001.971789","url":null,"abstract":"To ensure uniform line arrangement and line tension in the line winding process of automobile belt manufacture, a new microcomputer drive system has been developed. It includes an industrial PC, a shaft speed modulating system using an inverter, a step-motor control system for synchronous linear movement of line wheel and a line tension control system. Through algorithms and programs, it can realize all control actions, and data recording, retrieving and printing.","PeriodicalId":143007,"journal":{"name":"ICEMS'2001. Proceedings of the Fifth International Conference on Electrical Machines and Systems (IEEE Cat. No.01EX501)","volume":"95 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":"132813204","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.2001.970672
Bi Daqiang, W. Xiang-heng, Xu Zhenyu, Wang Weijian
By analyzing the sensitivity and its influencing factors of stator earth-fault protection by injecting a 20 Hz signal, this paper puts forward an improved generator protection scheme based on the impedance angle and its mutation component. The simulation results verify this kind of protection scheme has higher reliability and sensitivity under generator neutral grounding through a distribution transformer with a secondary resistor and arc-extinguishing coil compared with the conventional criterion. Against different grounding modes, the sensitivity of the protection scheme is further improved by correspondingly adjusting the frequency of the injected signal.
{"title":"Analysis and improvement on stator earth-fault protection by injecting 20 Hz signal","authors":"Bi Daqiang, W. Xiang-heng, Xu Zhenyu, Wang Weijian","doi":"10.1109/ICEMS.2001.970672","DOIUrl":"https://doi.org/10.1109/ICEMS.2001.970672","url":null,"abstract":"By analyzing the sensitivity and its influencing factors of stator earth-fault protection by injecting a 20 Hz signal, this paper puts forward an improved generator protection scheme based on the impedance angle and its mutation component. The simulation results verify this kind of protection scheme has higher reliability and sensitivity under generator neutral grounding through a distribution transformer with a secondary resistor and arc-extinguishing coil compared with the conventional criterion. Against different grounding modes, the sensitivity of the protection scheme is further improved by correspondingly adjusting the frequency of the injected signal.","PeriodicalId":143007,"journal":{"name":"ICEMS'2001. Proceedings of the Fifth International Conference on Electrical Machines and Systems (IEEE Cat. No.01EX501)","volume":"108 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":"131825412","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.2001.971927
Z. Jiyan, Duan Xiong-ying, Dong En-yuan
The permanent magnet actuator (PMA) is a new drive system for vacuum switches, it is the key technology to the transformation from mechanic driver to electronic driver. After discussion on the concept of an electronic driver, an equivalent circuit of a typical PMA is given first, an optimized energizing current is proposed, that needs a minimum pulsed power source. Then the reliability of a PMA system is discussed.
{"title":"Permanent magnet actuator and electronic drive for vacuum switches","authors":"Z. Jiyan, Duan Xiong-ying, Dong En-yuan","doi":"10.1109/ICEMS.2001.971927","DOIUrl":"https://doi.org/10.1109/ICEMS.2001.971927","url":null,"abstract":"The permanent magnet actuator (PMA) is a new drive system for vacuum switches, it is the key technology to the transformation from mechanic driver to electronic driver. After discussion on the concept of an electronic driver, an equivalent circuit of a typical PMA is given first, an optimized energizing current is proposed, that needs a minimum pulsed power source. Then the reliability of a PMA system is discussed.","PeriodicalId":143007,"journal":{"name":"ICEMS'2001. Proceedings of the Fifth International Conference on Electrical Machines and Systems (IEEE Cat. No.01EX501)","volume":"89 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":"132297853","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.2001.971825
C. Bowen, Zhou Jihua, Ren Zhang
This paper addresses the modeling and simulation of a permanent magnet synchronous motor (PMSM) supplied from a six-step continuous inverter based on the state-space method. Two transformations of reference frame are used and the method on deciding the initial conditions is presented. The results obtained show that the method is very effective.
{"title":"Modeling and simulation of permanent magnet synchronous motor drives","authors":"C. Bowen, Zhou Jihua, Ren Zhang","doi":"10.1109/ICEMS.2001.971825","DOIUrl":"https://doi.org/10.1109/ICEMS.2001.971825","url":null,"abstract":"This paper addresses the modeling and simulation of a permanent magnet synchronous motor (PMSM) supplied from a six-step continuous inverter based on the state-space method. Two transformations of reference frame are used and the method on deciding the initial conditions is presented. The results obtained show that the method is very effective.","PeriodicalId":143007,"journal":{"name":"ICEMS'2001. Proceedings of the Fifth International Conference on Electrical Machines and Systems (IEEE Cat. No.01EX501)","volume":"57 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":"133047176","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.2001.971841
Xie Lun, Sun Yi-kang, Ding Yunshi, Wang Jing, Wang Song, Du Cang, Sheng Xiangyuan
This paper presents the configuration and mathematical model of (single-frame and self-cascaded) brushless doubly-fed AC excited induction machines (BDFAEIMs). On the basis of the mathematical model of BDFAEIMs and the control algorithm of their control system, numerical simulation (with C++ language development environment) is made in order to get a valid conclusion. From the simulation results, it can be seen that field-oriented vector control algorithm of utility supply is suitable for the brushless doubly-fed AC excited induction machine drive control system to meet its dynamic and static performances. Finally, a control system which consists of over fifty printed circuit boards (single height of European standards) is made and the laboratory results conforms with the above-mentioned control algorithm and computer simulation.
{"title":"The research of brushless doubly-fed AC excited induction machine drive","authors":"Xie Lun, Sun Yi-kang, Ding Yunshi, Wang Jing, Wang Song, Du Cang, Sheng Xiangyuan","doi":"10.1109/ICEMS.2001.971841","DOIUrl":"https://doi.org/10.1109/ICEMS.2001.971841","url":null,"abstract":"This paper presents the configuration and mathematical model of (single-frame and self-cascaded) brushless doubly-fed AC excited induction machines (BDFAEIMs). On the basis of the mathematical model of BDFAEIMs and the control algorithm of their control system, numerical simulation (with C++ language development environment) is made in order to get a valid conclusion. From the simulation results, it can be seen that field-oriented vector control algorithm of utility supply is suitable for the brushless doubly-fed AC excited induction machine drive control system to meet its dynamic and static performances. Finally, a control system which consists of over fifty printed circuit boards (single height of European standards) is made and the laboratory results conforms with the above-mentioned control algorithm and computer simulation.","PeriodicalId":143007,"journal":{"name":"ICEMS'2001. Proceedings of the Fifth International Conference on Electrical Machines and Systems (IEEE Cat. No.01EX501)","volume":"35 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":"133817972","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.2001.971859
Zhang Fengge, Wang Zheng, Wang Fengxiang
Two main types of rotor structure used in doubly-fed brushless machine (DFBM) are the cage and ALA (axially laminated anisotropy) rotors. In order to investigate the effect of different rotor structures on the dynamic characteristic of DFBM, this paper presents the comparative study results between the ALA reluctance rotor and cage rotor machine. It is indicated that the DFBM with cage rotor has better starting characteristic, however, the DFBM with ALA rotor is provided with fine drag-in and dynamic response ability.
{"title":"Open-loop dynamic characteristic comparison of doubly-fed brushless machine with ALA and cage rotor","authors":"Zhang Fengge, Wang Zheng, Wang Fengxiang","doi":"10.1109/ICEMS.2001.971859","DOIUrl":"https://doi.org/10.1109/ICEMS.2001.971859","url":null,"abstract":"Two main types of rotor structure used in doubly-fed brushless machine (DFBM) are the cage and ALA (axially laminated anisotropy) rotors. In order to investigate the effect of different rotor structures on the dynamic characteristic of DFBM, this paper presents the comparative study results between the ALA reluctance rotor and cage rotor machine. It is indicated that the DFBM with cage rotor has better starting characteristic, however, the DFBM with ALA rotor is provided with fine drag-in and dynamic response ability.","PeriodicalId":143007,"journal":{"name":"ICEMS'2001. Proceedings of the Fifth International Conference on Electrical Machines and Systems (IEEE Cat. No.01EX501)","volume":"231 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":"115325708","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.2001.971842
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.2001.970709
Chen Li-an, Zhang Peiming
The various faults of motor like short circuited and overload fault can be simulated by the Simulink and Power System Blockset of MATLAB. By researching the instantaneous procedure of the motor faults, protective methods which are more reliable and safer can be provided.
利用MATLAB中的Simulink和Power System Blockset可以对电动机的短路、过载等各种故障进行仿真。通过对电机故障瞬间过程的研究，可以提供更可靠、更安全的保护方法。
{"title":"Simulation of motor faults and protections based on MATLAB","authors":"Chen Li-an, Zhang Peiming","doi":"10.1109/ICEMS.2001.970709","DOIUrl":"https://doi.org/10.1109/ICEMS.2001.970709","url":null,"abstract":"The various faults of motor like short circuited and overload fault can be simulated by the Simulink and Power System Blockset of MATLAB. By researching the instantaneous procedure of the motor faults, protective methods which are more reliable and safer can be provided.","PeriodicalId":143007,"journal":{"name":"ICEMS'2001. Proceedings of the Fifth International Conference on Electrical Machines and Systems (IEEE Cat. No.01EX501)","volume":"34 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":"117173299","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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