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IAS '95. Conference Record of the 1995 IEEE Industry Applications Conference Thirtieth IAS Annual Meeting最新文献

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Algebraic dual-energy magnetic analysis with application to variable reluctance motor design 代数双能磁分析及其在变磁阻电机设计中的应用
IAS '95. Conference Record of the 1995 IEEE Industry Applications Conference Thirtieth IAS Annual Meeting Pub Date : 1999-09-01 DOI: 10.1109/IAS.1995.530329
M. Tolikas, J. Lang, J. Kirtley
{"title":"Algebraic dual-energy magnetic analysis with application to variable reluctance motor design","authors":"M. Tolikas, J. Lang, J. Kirtley","doi":"10.1109/IAS.1995.530329","DOIUrl":"https://doi.org/10.1109/IAS.1995.530329","url":null,"abstract":"The dual-energy method has been successfully employed in the calculation of static resistances, capacitances and inductances, yielding fast and accurate solutions. Two different directions can be followed in applying the method, one is the more widely known \"method of tubes and slices\", the other is the algebraic approach and is explored further in this paper. The literature on the algebraic dual-energy method involves trivial examples with boundaries, boundary conditions and source distributions that are easily handled. However, the geometry of the variable reluctance motor at the unaligned position, the dominating curvatures characterizing its electromagnetic field distribution and the presence of a large number of boundary conditions arising at the steel boundaries, provide a challenging exercise in the application, behavior and effectiveness of the dual-energy method in a realistic framework.","PeriodicalId":117576,"journal":{"name":"IAS '95. Conference Record of the 1995 IEEE Industry Applications Conference Thirtieth IAS Annual Meeting","volume":"86 7 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1999-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126280136","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}
引用次数: 9
Vector and scalar control of a four switch three phase inverter 矢量和标量控制的四开关三相逆变器
IAS '95. Conference Record of the 1995 IEEE Industry Applications Conference Thirtieth IAS Annual Meeting Pub Date : 1995-10-08 DOI: 10.1109/IAS.1995.530611
C. Jacobina, E. D. da Silva, Antonio M. N. Lima, R.L.A. Ribeiro
{"title":"Vector and scalar control of a four switch three phase inverter","authors":"C. Jacobina, E. D. da Silva, Antonio M. N. Lima, R.L.A. Ribeiro","doi":"10.1109/IAS.1995.530611","DOIUrl":"https://doi.org/10.1109/IAS.1995.530611","url":null,"abstract":"This paper investigates the PWM operation of a four switch three phase inverter (FSTPI), in the case of digital implementation. Different switching sequence strategies for vector control are described and a digital scaler method is also presented. The influence of different switching patterns on the output voltage symmetry, current waveform and switching frequency are examined. The results obtained by employing the vector and scalar strategies are compared and a relationship between them is established. This comparison is based on analytical study and is corroborated by the computer simulations and by the experimental results. The vector approach makes it easy to understand and analyse the FSTPI, as well the choice of a PWM pattern. However, similar results may be obtained through the scalar approach, which has a simpler implementation. The experimental results of the use of the FSTPI and digital PWM to control an induction motor are presented.","PeriodicalId":117576,"journal":{"name":"IAS '95. Conference Record of the 1995 IEEE Industry Applications Conference Thirtieth IAS Annual Meeting","volume":"105 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1995-10-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115164491","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}
引用次数: 92
The significance of zero space vector placement for carrier based PWM schemes 零空间矢量放置对基于载波的PWM方案的意义
IAS '95. Conference Record of the 1995 IEEE Industry Applications Conference Thirtieth IAS Annual Meeting Pub Date : 1995-10-08 DOI: 10.1109/IAS.1995.530615
Donald Grahame Holmes
{"title":"The significance of zero space vector placement for carrier based PWM schemes","authors":"Donald Grahame Holmes","doi":"10.1109/IAS.1995.530615","DOIUrl":"https://doi.org/10.1109/IAS.1995.530615","url":null,"abstract":"Pulse width modulation has been one of the most intensively investigated areas of power electronics for many years, and the number and combination of permutations seem to be endless. However, a general hierarchial consensus appears to have emerged from this work which ranks space vector modulation techniques, regular sampled modulation and sine-triangle modulation strategies in decreasing order of merit based on harmonic performance. However, what has not been clearly identified is why space vector modulation should lead to a reduced harmonic current ripple compared to regular sampled modulation, especially since it is straightforward to show that they produce identical low frequency fundamental components. This paper addresses this issue, by showing how it is the placement of the zero space vector component within the carrier interval that determines the harmonic performance of the modulation strategy, rather than any intrinsic differences between the various methods of calculating the switching instances.","PeriodicalId":117576,"journal":{"name":"IAS '95. Conference Record of the 1995 IEEE Industry Applications Conference Thirtieth IAS Annual Meeting","volume":"10 4 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1995-10-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116787971","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}
引用次数: 298
A soft switched direct frequency changer 一种软开关直接变频器
IAS '95. Conference Record of the 1995 IEEE Industry Applications Conference Thirtieth IAS Annual Meeting Pub Date : 1995-10-08 DOI: 10.1109/IAS.1995.530597
M.V.M. Villaca, A.J. Perin
{"title":"A soft switched direct frequency changer","authors":"M.V.M. Villaca, A.J. Perin","doi":"10.1109/IAS.1995.530597","DOIUrl":"https://doi.org/10.1109/IAS.1995.530597","url":null,"abstract":"Development in power semiconductors and commutation techniques has brought back the interest in direct frequency changers. A soft switched three-phase to single-phase direct frequency changer is introduced adopting the bidirectional ZVS cell proposed by the authors (see IEEE APEC, 1995). Hence, the proposed converter does not need dead time between gate signals, presents natural protection against overcurrent, uses a simple gate signal drive circuitry and the commutation losses are reduced with no increase of the conduction losses. All types of AC modulation can be used and the bidirectional switches can operate in high frequency of commutation. A prototype operating at a high commutation frequency using IGBT is assembled and the results obtained are discussed. Analysis and design are also presented.","PeriodicalId":117576,"journal":{"name":"IAS '95. Conference Record of the 1995 IEEE Industry Applications Conference Thirtieth IAS Annual Meeting","volume":"8 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1995-10-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126128248","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}
引用次数: 10
Transient effects of PWM ASDs on standard squirrel cage induction motors PWM asd对标准鼠笼式异步电动机的瞬态影响
IAS '95. Conference Record of the 1995 IEEE Industry Applications Conference Thirtieth IAS Annual Meeting Pub Date : 1995-10-08 DOI: 10.1109/IAS.1995.530645
C. Melhorn, Le Tang
{"title":"Transient effects of PWM ASDs on standard squirrel cage induction motors","authors":"C. Melhorn, Le Tang","doi":"10.1109/IAS.1995.530645","DOIUrl":"https://doi.org/10.1109/IAS.1995.530645","url":null,"abstract":"With the advances in semiconductor devices, adjustable speed drives (ASDs) have become more prevalent than ever before in industrial and commercial processes. Many facilities are installing ASDs to improve the efficiency of their processes and to increase the control of their processes. While the effects of ASDs on the power system are well known, many engineers and systems integrators are not aware of the effects that ASDs can have on the motor that is driven by the drive. This paper describes the techniques used to measure, analyze, and simulate the problems associated with the use of PWM ASDs to drive induction motors. Measures to mitigate these problems are also discussed. The Electro-Magnetic Transients Program (EMTP) is used to simulate the phenomena, compare results against measurements, and evaluate mitigation techniques.","PeriodicalId":117576,"journal":{"name":"IAS '95. Conference Record of the 1995 IEEE Industry Applications Conference Thirtieth IAS Annual Meeting","volume":"5 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1995-10-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125442479","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}
引用次数: 26
Inertia identification for the speed observer of the low speed control of induction machines 感应电机低速控制速度观测器的惯性辨识
IAS '95. Conference Record of the 1995 IEEE Industry Applications Conference Thirtieth IAS Annual Meeting Pub Date : 1995-10-08 DOI: 10.1109/IAS.1995.530547
Nam-Joon Kim, Hee-Sung Moon, Dong-Myung Lee, D. Hyun
{"title":"Inertia identification for the speed observer of the low speed control of induction machines","authors":"Nam-Joon Kim, Hee-Sung Moon, Dong-Myung Lee, D. Hyun","doi":"10.1109/IAS.1995.530547","DOIUrl":"https://doi.org/10.1109/IAS.1995.530547","url":null,"abstract":"This paper presents a control method of an induction machine in a low speed range with an instantaneous speed observer and inertia identification. When the low resolution incremental-type encoder is used for the speed detection we get only the average speed between the interval of the encoder pulses and it usually makes the speed controller unstable at the very low speed range. This paper, therefore, proposes a low speed control method using the low precision shaft encoder with speed observer implementing the disturbance torque observer. Furthermore, to improve the performance of the speed controller, we perform the inertia identification algorithm using the estimated inertia acquired by the periodic test signal. We show that this proposed method is superior to the conventional method by simulation and experimental results.","PeriodicalId":117576,"journal":{"name":"IAS '95. Conference Record of the 1995 IEEE Industry Applications Conference Thirtieth IAS Annual Meeting","volume":"11 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1995-10-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125532931","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}
引用次数: 51
Technological innovations in deep coal mine power systems 煤矿深部动力系统技术创新
IAS '95. Conference Record of the 1995 IEEE Industry Applications Conference Thirtieth IAS Annual Meeting Pub Date : 1995-10-08 DOI: 10.1109/IAS.1995.530557
T. Novak, J. Kohler
{"title":"Technological innovations in deep coal mine power systems","authors":"T. Novak, J. Kohler","doi":"10.1109/IAS.1995.530557","DOIUrl":"https://doi.org/10.1109/IAS.1995.530557","url":null,"abstract":"Various innovations and changes have occurred to underground coal-mine power systems during the past ten years. Some of these are the use of higher utilization and distribution voltages and their associated switchgear; the use of programmable logic controllers for control, monitoring, and diagnostic applications; improved protective relaying with built-in test circuitry; power-factor correction near loads for improved voltage regulation; and modifications to power-system component arrangement. Many of the innovations were necessitated by significant increases in power requirements of face equipment, particularly longwall equipment, while others are the result of improved technology. In either case, improved power-system operating characteristics, as well as enhanced levels of safety, have resulted. This paper describes many of the major innovations that have evolved.","PeriodicalId":117576,"journal":{"name":"IAS '95. Conference Record of the 1995 IEEE Industry Applications Conference Thirtieth IAS Annual Meeting","volume":"11 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1995-10-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114292384","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}
引用次数: 31
Numerical optimization of a heat sink used for electric motor drives 用于电机驱动的散热器的数值优化
IAS '95. Conference Record of the 1995 IEEE Industry Applications Conference Thirtieth IAS Annual Meeting Pub Date : 1995-10-08 DOI: 10.1109/IAS.1995.530405
M. Gordon, M. Stewart, B. King, J. Balda, K. Olejniczak
{"title":"Numerical optimization of a heat sink used for electric motor drives","authors":"M. Gordon, M. Stewart, B. King, J. Balda, K. Olejniczak","doi":"10.1109/IAS.1995.530405","DOIUrl":"https://doi.org/10.1109/IAS.1995.530405","url":null,"abstract":"To maximize the performance of a finned heat sink used to cool power modules for motor drives rated up to five horsepower, fluid and thermal effects were modeled using the commercially available software packages ANSYS and FLUENT. In particular, a heat sink used to cool a power module with an average power dissipation of 203 Watts was numerically studied to assess the feasibility of using the same heat sink to cool a power module with an average power dissipation of 265 Watts. Results indicate that, if the geometric configuration is unchanged, the volumetric flow rate must be increased by nearly 65%-increasing the pressure drop by 250% and the required fan power by 410%-or the ambient temperature must be lowered by almost 15/spl deg/C, relative to the base case.","PeriodicalId":117576,"journal":{"name":"IAS '95. Conference Record of the 1995 IEEE Industry Applications Conference Thirtieth IAS Annual Meeting","volume":"28 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1995-10-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129852514","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}
引用次数: 9
Fuzzy logic control of automated screw fastening 螺钉自动紧固的模糊逻辑控制
IAS '95. Conference Record of the 1995 IEEE Industry Applications Conference Thirtieth IAS Annual Meeting Pub Date : 1995-10-08 DOI: 10.1109/IAS.1995.530506
F. Mrad, Z. Gao, N. Dhayagude
{"title":"Fuzzy logic control of automated screw fastening","authors":"F. Mrad, Z. Gao, N. Dhayagude","doi":"10.1109/IAS.1995.530506","DOIUrl":"https://doi.org/10.1109/IAS.1995.530506","url":null,"abstract":"In this paper, we present an intelligent control strategy for automated screw fastening. In automated assembly processes, there is a large number of dedicated stations for various types/sizes of screw fastening. Problems found in current processes include cross-threading, screw jamming, slippage and the need to apply precise torque. The intelligent controller developed supervises the integrated process of an electric driver mounted on a robotic positioning system to fasten screws. The new scheme controls continuously the motion and driving stages to avoid process caused failures, to achieve a desired precise torque and to detect bad parts at early stages of the assembly. Initial results are encouraging.","PeriodicalId":117576,"journal":{"name":"IAS '95. Conference Record of the 1995 IEEE Industry Applications Conference Thirtieth IAS Annual Meeting","volume":"32 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1995-10-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128322674","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}
引用次数: 44
Surface potential measurements for predicting film thickness of electrostatically sprayed powders 预测静电喷涂粉末膜厚的表面电位测量
IAS '95. Conference Record of the 1995 IEEE Industry Applications Conference Thirtieth IAS Annual Meeting Pub Date : 1995-10-08 DOI: 10.1109/IAS.1995.530449
Stanely G. Rawski, A. Elmoursi, Phuong-Anh Ngo, Robert A. Ottaviani
{"title":"Surface potential measurements for predicting film thickness of electrostatically sprayed powders","authors":"Stanely G. Rawski, A. Elmoursi, Phuong-Anh Ngo, Robert A. Ottaviani","doi":"10.1109/IAS.1995.530449","DOIUrl":"https://doi.org/10.1109/IAS.1995.530449","url":null,"abstract":"This paper investigates the possible correlation between the surface potential of electrostatically sprayed powders prior to bake to their cured film thickness. In this study, two different methods were used for supplying the powder to the spray gun. The first method used a fluidized bed (conventional system). The second series of tests were performed with a vibrating trough that delivered a fixed amount of powder (in-house setup). The experimental data does show that correlation does exist between the film thickness and the surface potential, but a single correlation factor can only be established for a fixed set of spraying conditions.","PeriodicalId":117576,"journal":{"name":"IAS '95. Conference Record of the 1995 IEEE Industry Applications Conference Thirtieth IAS Annual Meeting","volume":"44 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1995-10-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128600666","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}
引用次数: 0
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