Pub Date : 2001-08-18DOI: 10.1109/ICEMS.2001.971907
F. Bacha, R. Dhifaoui, H. Buyse
This paper proposes a new approach for direct torque control (DTC) based on fuzzy logic concept The developed fuzzy logic controller (FDTC) uses mainly the inputoutput data. Its real-time implementation is described and experimental and simulation results are compared. Sufficient agreement between the two results has been obtained.
{"title":"Real-time implementation of direct torque control of an induction machine by fuzzy logic controller","authors":"F. Bacha, R. Dhifaoui, H. Buyse","doi":"10.1109/ICEMS.2001.971907","DOIUrl":"https://doi.org/10.1109/ICEMS.2001.971907","url":null,"abstract":"This paper proposes a new approach for direct torque control (DTC) based on fuzzy logic concept The developed fuzzy logic controller (FDTC) uses mainly the inputoutput data. Its real-time implementation is described and experimental and simulation results are compared. Sufficient agreement between the two results has been obtained.","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":"114664484","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.2001.970705
Liu Tao, Zhou Qian, W. Xiang-heng, S. Peng-sheng, Wang Weijian
Using the Park equations and considering speed governor and excitation regulation, this paper simulates the process of asynchronous generator under low excitation and loss of field. Experimental results verify the mathematical model and the simulation results. Further, according to the values calculated under low excitation, such as voltage, current, speed and power angle, the general movement trend and frequency are discussed.
{"title":"Dynamic performance for turbo generator under low excitation and loss of field","authors":"Liu Tao, Zhou Qian, W. Xiang-heng, S. Peng-sheng, Wang Weijian","doi":"10.1109/ICEMS.2001.970705","DOIUrl":"https://doi.org/10.1109/ICEMS.2001.970705","url":null,"abstract":"Using the Park equations and considering speed governor and excitation regulation, this paper simulates the process of asynchronous generator under low excitation and loss of field. Experimental results verify the mathematical model and the simulation results. Further, according to the values calculated under low excitation, such as voltage, current, speed and power angle, the general movement trend and frequency are discussed.","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":"116699120","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.2001.970693
V. Devanneaux, H. Kabbaj, B. Dagues, J. Faucher
A substantial portion of squirrel cage induction motor faults is rotor related. An accurate transient model of squirrel cage induction machines under rotor faults is presented. A coupled magnetic circuits approach is used and very few restrictive assumptions are made. All parameters are calculated from the actual geometry and winding layout of the machines rather than from transformed or equivalent variables. The detailed depiction of the procedure needed to implement such an accurate model with simulation results is the subject of this paper.
{"title":"An accurate model of squirrel cage induction machines under rotor faults","authors":"V. Devanneaux, H. Kabbaj, B. Dagues, J. Faucher","doi":"10.1109/ICEMS.2001.970693","DOIUrl":"https://doi.org/10.1109/ICEMS.2001.970693","url":null,"abstract":"A substantial portion of squirrel cage induction motor faults is rotor related. An accurate transient model of squirrel cage induction machines under rotor faults is presented. A coupled magnetic circuits approach is used and very few restrictive assumptions are made. All parameters are calculated from the actual geometry and winding layout of the machines rather than from transformed or equivalent variables. The detailed depiction of the procedure needed to implement such an accurate model with simulation results is the subject of this paper.","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":"116794422","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.2001.970624
Bi Daqiang, W. Xiang-heng, Xu Zhenyu, Wang Weijian
This paper puts forward a developed scheme against the deficiencies of the out-of-step protection based on the three-impedance element principle, which is widely applied at present. Compared with the original scheme, the developed scheme can predict the out-of-step caused by steady stability disruption or transient instability by using the least square method in advance and monitor the limit of steady stability. So the performance of the out of step protection is improved. The paper gives the whole developed protection scheme. The results of dynamic simulation experiments verify the scheme.
{"title":"The out-of-step protection with prediction function for generators","authors":"Bi Daqiang, W. Xiang-heng, Xu Zhenyu, Wang Weijian","doi":"10.1109/ICEMS.2001.970624","DOIUrl":"https://doi.org/10.1109/ICEMS.2001.970624","url":null,"abstract":"This paper puts forward a developed scheme against the deficiencies of the out-of-step protection based on the three-impedance element principle, which is widely applied at present. Compared with the original scheme, the developed scheme can predict the out-of-step caused by steady stability disruption or transient instability by using the least square method in advance and monitor the limit of steady stability. So the performance of the out of step protection is improved. The paper gives the whole developed protection scheme. The results of dynamic simulation experiments verify the scheme.","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":"121371645","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.2001.970612
D. Hwang, Doh-Young Park, YongJun Kim, Young-Hoon Lee, Dong-Hee Kim, In-Woo Lee, Ick-Goo Hur
The winding insulation of low-voltage induction motors in adjustable-speed drive system with voltage-fed inverters is substantially stressed due to the uneven voltage distribution and excessive voltage stress (dv/dt), which result in the premature insulation breakdown. This paper describes test results of the insulation characteristics from 20 HP, 380 V induction motors for inverter applications. Five different types of insulation techniques are applied to 19 induction motors. The insulation characteristics are compared to partial discharge, capacitance, AC current, and dissipation factor tests. Also, the insulation breakdown tests by high voltage pulses are performed, and the corresponding breakdown voltages are obtained.
{"title":"A comparison with insulation system for PWM-inverter-fed induction motors","authors":"D. Hwang, Doh-Young Park, YongJun Kim, Young-Hoon Lee, Dong-Hee Kim, In-Woo Lee, Ick-Goo Hur","doi":"10.1109/ICEMS.2001.970612","DOIUrl":"https://doi.org/10.1109/ICEMS.2001.970612","url":null,"abstract":"The winding insulation of low-voltage induction motors in adjustable-speed drive system with voltage-fed inverters is substantially stressed due to the uneven voltage distribution and excessive voltage stress (dv/dt), which result in the premature insulation breakdown. This paper describes test results of the insulation characteristics from 20 HP, 380 V induction motors for inverter applications. Five different types of insulation techniques are applied to 19 induction motors. The insulation characteristics are compared to partial discharge, capacitance, AC current, and dissipation factor tests. Also, the insulation breakdown tests by high voltage pulses are performed, and the corresponding breakdown voltages are obtained.","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":"127285313","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.2001.970679
YongJun Kim, D. Hwang, Doh-Young Park, S. Song
Nowadays on-line monitoring scheme with trending technique is widely adopted in insulation diagnosis. In this paper, two types of online monitoring instrumentation for an insulation diagnosis are proposed. The first unit obtains the parameters such as partial discharge magnitude and dynamic stagnation voltage (DSV) in selected frequency bands. The partial discharge activities can be interpreted more precisely by these techniques. The second one indicates the partial discharge spectra in reduced time resolution with lower cost. Several online sensors for partial discharges monitoring are also introduced.
{"title":"Novel on-line partial discharge monitoring system for generator/motor stator insulations","authors":"YongJun Kim, D. Hwang, Doh-Young Park, S. Song","doi":"10.1109/ICEMS.2001.970679","DOIUrl":"https://doi.org/10.1109/ICEMS.2001.970679","url":null,"abstract":"Nowadays on-line monitoring scheme with trending technique is widely adopted in insulation diagnosis. In this paper, two types of online monitoring instrumentation for an insulation diagnosis are proposed. The first unit obtains the parameters such as partial discharge magnitude and dynamic stagnation voltage (DSV) in selected frequency bands. The partial discharge activities can be interpreted more precisely by these techniques. The second one indicates the partial discharge spectra in reduced time resolution with lower cost. Several online sensors for partial discharges monitoring are also introduced.","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":"124980434","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.2001.970719
Ming Zhengfeng, Zhong Yanru, Sun Xiangdong, Mo Hongping
This paper proposes a novel circuit of DC-rail parallel resonant zero voltage transition voltage-source inverter (DC-Rail PR ZVT VSI) for three-phase motor drive. In this circuit all switches are turned on or turned off under the zero voltage switching (ZVS) or zero current switching (ZCS) without high stress of voltage and current. Power ratings of the resonant components and auxiliary switches required are small. The control scheme is simple and less dependant on load current This paper gives details of the theoretical analysis, the rules of selecting the auxiliary switches and the commutation components and the control strategy of the proposed circuits. Finally, the validity and the efficiency of the circuit are tested and verified by experiment results. Some questions in practical application are discussed.
{"title":"A novel DC-rail parallel resonant ZVT VSI for three-phase AC motor drive","authors":"Ming Zhengfeng, Zhong Yanru, Sun Xiangdong, Mo Hongping","doi":"10.1109/ICEMS.2001.970719","DOIUrl":"https://doi.org/10.1109/ICEMS.2001.970719","url":null,"abstract":"This paper proposes a novel circuit of DC-rail parallel resonant zero voltage transition voltage-source inverter (DC-Rail PR ZVT VSI) for three-phase motor drive. In this circuit all switches are turned on or turned off under the zero voltage switching (ZVS) or zero current switching (ZCS) without high stress of voltage and current. Power ratings of the resonant components and auxiliary switches required are small. The control scheme is simple and less dependant on load current This paper gives details of the theoretical analysis, the rules of selecting the auxiliary switches and the commutation components and the control strategy of the proposed circuits. Finally, the validity and the efficiency of the circuit are tested and verified by experiment results. Some questions in practical application are discussed.","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":"125194667","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}
The rotor structural design and anti-demagnetization method are studied on the 1120 kW permanent magnet synchronous motor (PMSM) in the design and manufacturing process in this paper. The rotor structure, which has the merits of sufficient anti-demagnetization and strong rigidity, is designed. Design and manufacture of the motor has been worked out.
{"title":"Study and design of large capacity high efficiency permanent magnet synchronous motor","authors":"Zhao Qing, An Zhong-liang, Tian Lijian, Wu Yanzhong, Tang Renyan, Yu Shenbo","doi":"10.1109/ICEMS.2001.971820","DOIUrl":"https://doi.org/10.1109/ICEMS.2001.971820","url":null,"abstract":"The rotor structural design and anti-demagnetization method are studied on the 1120 kW permanent magnet synchronous motor (PMSM) in the design and manufacturing process in this paper. The rotor structure, which has the merits of sufficient anti-demagnetization and strong rigidity, is designed. Design and manufacture of the motor has been worked out.","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":"123426738","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.2001.971772
Yang Wenqiang, Jia Zhengchun, Xu Qiang
A new reduced-order extended Kalman filter to estimate the rotor flux components and speed of an induction machine for speed sensorless vector control is proposed. With this method, two rotor flux components are selected as the state variables, and the rotor speed as an estimated parameter is regarded as an augmented state variable. The algorithm with reduced order decreases the computational complexity and makes the proposed estimator feasible to be implemented in real time. The simulation results show high accuracy of the estimation algorithm, and verify the usefulness of the proposed algorithm.
{"title":"A new algorithm for flux and speed estimation in induction machine","authors":"Yang Wenqiang, Jia Zhengchun, Xu Qiang","doi":"10.1109/ICEMS.2001.971772","DOIUrl":"https://doi.org/10.1109/ICEMS.2001.971772","url":null,"abstract":"A new reduced-order extended Kalman filter to estimate the rotor flux components and speed of an induction machine for speed sensorless vector control is proposed. With this method, two rotor flux components are selected as the state variables, and the rotor speed as an estimated parameter is regarded as an augmented state variable. The algorithm with reduced order decreases the computational complexity and makes the proposed estimator feasible to be implemented in real time. The simulation results show high accuracy of the estimation algorithm, and verify the usefulness of the proposed algorithm.","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":"125267571","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.2001.971904
Dong Lei, Li Yongdong, Chai Jianyun, W. Wensen
This paper presents a novel method to estimate the rotor flux position of an induction machine by injecting a high frequency signal at very low speed, including zero speed. When the high frequency fluctuating signal is injected in the terminal of an induction machine, the difference of impedance between the d-axis and q-axis of the synchronous rotating reference frame can be measured. This phenomenon is explained by a high frequency model of the induction machine, which is oriented with a high frequency signal space vector. The rotor flux angle can thus be tracked by tuning the space vector of the high frequency signal. Experimental results are provided to verify that this algorithm is robust against parameters variations and load changes.
{"title":"Speed sensor-less control of an induction machine with rotor flux tracking at very low speed","authors":"Dong Lei, Li Yongdong, Chai Jianyun, W. Wensen","doi":"10.1109/ICEMS.2001.971904","DOIUrl":"https://doi.org/10.1109/ICEMS.2001.971904","url":null,"abstract":"This paper presents a novel method to estimate the rotor flux position of an induction machine by injecting a high frequency signal at very low speed, including zero speed. When the high frequency fluctuating signal is injected in the terminal of an induction machine, the difference of impedance between the d-axis and q-axis of the synchronous rotating reference frame can be measured. This phenomenon is explained by a high frequency model of the induction machine, which is oriented with a high frequency signal space vector. The rotor flux angle can thus be tracked by tuning the space vector of the high frequency signal. Experimental results are provided to verify that this algorithm is robust against parameters variations and load changes.","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":"125521954","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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