Conference Record of the 1999 IEEE Industry Applications Conference. Thirty-Forth IAS Annual Meeting (Cat. No.99CH36370)最新文献

Sensorless very low and zero speed estimations with on-line secondary resistance estimation of induction motor without adding any signal 无传感器的极低和零转速估计与在线感应电机的二次电阻估计不添加任何信号

Conference Record of the 1999 IEEE Industry Applications Conference. Thirty-Forth IAS Annual Meeting (Cat. No.99CH36370) Pub Date : 1999-12-01 DOI: 10.1109/IAS.1999.799954

K. Akatsu, A. Kawamura

{"title":"Sensorless very low and zero speed estimations with on-line secondary resistance estimation of induction motor without adding any signal","authors":"K. Akatsu, A. Kawamura","doi":"10.1109/IAS.1999.799954","DOIUrl":"https://doi.org/10.1109/IAS.1999.799954","url":null,"abstract":"In the speed sensorless control of the induction motor, the machine parameters (especially the secondary resistance R/sub 2/) have a strong influence to the speed estimation. It is known that the simultaneous estimation of the speed and the R/sub 2/ is impossible in the slip frequency type vector control, because the secondary flux is constant. In addition, the output voltage error due to the dead time and the voltage drop of the inverter influences the secondary flux estimation, but the simultaneous compensation of the output voltage and the primary resistance R/sub 1/ is very difficult. In this paper the R/sub 2/ estimation without adding any additional signal to the stator current is proposed. In the high frequency range, the R/sub 2/ is estimated in the transient state, and in the very low frequency range, the R/sub 2/ is estimated in proportion to the estimated R/sub 1/ when the ideal voltage source by the power op-amp is used instead of the voltage source inverter to avoid the output voltage error. In use of these algorithms, the low speed estimation was possible and the zero speed control was achieved under the 10-40% load condition. This paper clarified that the zero speed estimation is possible with the primary and secondary resistance estimations when the output voltage is ideal.","PeriodicalId":125787,"journal":{"name":"Conference Record of the 1999 IEEE Industry Applications Conference. Thirty-Forth IAS Annual Meeting (Cat. No.99CH36370)","volume":"11 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1999-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122253171","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: 11

Voltage-fed NPC soft-switching inverter with new space voltage vector modulation scheme 基于新型空间电压矢量调制方案的馈压型NPC软开关逆变器

Conference Record of the 1999 IEEE Industry Applications Conference. Thirty-Forth IAS Annual Meeting (Cat. No.99CH36370) Pub Date : 1999-12-01 DOI: 10.1109/IAS.1999.801653

M. Yamamoto, E. Hiraki, H. Iwamoto, S. Sugimoto, I. Kouda, M. Nakaoka

引用次数: 8

Voltage-phase shifting effect of three-phase harmonic canceling reactors and their applications to three-level diode rectifiers 三相谐波抵消电抗器的电压移相效应及其在三电平二极管整流器上的应用

Conference Record of the 1999 IEEE Industry Applications Conference. Thirty-Forth IAS Annual Meeting (Cat. No.99CH36370) Pub Date : 1999-12-01 DOI: 10.1109/IAS.1999.801598

K. Oguchi, G. Maeda, N. Hoshi, T. Kubota

引用次数: 18

Force of attraction between two conducting droplets in electric field 电场中两个导电液滴之间的吸引力

Conference Record of the 1999 IEEE Industry Applications Conference. Thirty-Forth IAS Annual Meeting (Cat. No.99CH36370) Pub Date : 1999-10-03 DOI: 10.1109/IAS.1999.805983

K. Adamiak

引用次数: 4

Representing electrical behaviour of transformers by lumped element circuits: a global physical approach 用集总元件电路表示变压器的电气特性:一种全局物理方法

Conference Record of the 1999 IEEE Industry Applications Conference. Thirty-Forth IAS Annual Meeting (Cat. No.99CH36370) Pub Date : 1999-10-03 DOI: 10.1109/IAS.1999.806025

A. Schellmanns, J. Keradec, J. Schanen, K. Berrouche

{"title":"Representing electrical behaviour of transformers by lumped element circuits: a global physical approach","authors":"A. Schellmanns, J. Keradec, J. Schanen, K. Berrouche","doi":"10.1109/IAS.1999.806025","DOIUrl":"https://doi.org/10.1109/IAS.1999.806025","url":null,"abstract":"This paper proposes equivalent circuits to represent the external electrical behaviour of multiwinding transformers. All aspects of the linear behaviour, including resonances and inter-winding devices to currents, are taken into account. The global physical components approach leads to general lumped element circuits such that only element values change from one component to another. All the element values of the proposed circuits are deducible from external electrical measurements with no need for extra information regarding shape, size, used technology and, even, turn numbers. This paper includes two parts. The first one focus on the representation of linear loss free magnetic coupling. How to represent leakage of multi-winding transformers and what measurements to choose to fully and accurately characterise magnetic coupling are among the investigated subjects. In the second part, representation of stray capacitors is studied: how to represent the electrostatic behaviour of multi-winding transformers and what measurements to choose to fully and accurately characterise these components.","PeriodicalId":125787,"journal":{"name":"Conference Record of the 1999 IEEE Industry Applications Conference. Thirty-Forth IAS Annual Meeting (Cat. No.99CH36370)","volume":"103 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1999-10-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115753166","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: 20

A speed sensorless vector control of induction motor operating at high efficiency taking core loss into account 考虑铁芯损耗的异步电动机高效率无速度传感器矢量控制

Conference Record of the 1999 IEEE Industry Applications Conference. Thirty-Forth IAS Annual Meeting (Cat. No.99CH36370) Pub Date : 1999-10-03 DOI: 10.1109/IAS.1999.801664

K. Matsuse, S. Taniguchi, T. Yoshizumi, K. Namiki

引用次数: 41

Finite element analysis of corona in wire-duct electrostatic precipitators 导线管静电除尘器电晕的有限元分析

Conference Record of the 1999 IEEE Industry Applications Conference. Thirty-Forth IAS Annual Meeting (Cat. No.99CH36370) Pub Date : 1999-10-03 DOI: 10.1109/IAS.1999.799987

Z. Al-Hamouz

引用次数: 0

Thermal modeling of aluminum electrolytic capacitors 铝电解电容器的热建模

Conference Record of the 1999 IEEE Industry Applications Conference. Thirty-Forth IAS Annual Meeting (Cat. No.99CH36370) Pub Date : 1999-10-03 DOI: 10.1109/IAS.1999.799180

S. Parler

引用次数: 52

On the charge of a moving particle within a parallel electrodes in viscous fluid 粘性流体中平行电极内运动粒子的电荷

Conference Record of the 1999 IEEE Industry Applications Conference. Thirty-Forth IAS Annual Meeting (Cat. No.99CH36370) Pub Date : 1999-10-03 DOI: 10.1109/IAS.1999.805989

K. Yatsuzuka, C. Choi, K. Asano

{"title":"On the charge of a moving particle within a parallel electrodes in viscous fluid","authors":"K. Yatsuzuka, C. Choi, K. Asano","doi":"10.1109/IAS.1999.805989","DOIUrl":"https://doi.org/10.1109/IAS.1999.805989","url":null,"abstract":"The conductive spherical particle in viscous fluid (silicone oil) under a uniform electric field shows both up-and-down motion and resting on the electrode between motions. In order to analyze the motion of a conductive particle under electric field theoretically, the charge amount of particle must be known. It can be achieved with several methods. When the conductive particle is on the electrode experiencing the uniform field, there is a well-known equation for the charge amount of a spherical particle. The second way is to estimate the electrostatic force acting on the particle in the motion through viscous fluid by using dynamic equation. The third method is to integrate a pulsed current when the charge exchange process is occurring between the particle and the electrode. The value of particle charge by integrating the current is much smaller than the others. The width of the current pulse is less than 100 /spl mu/s, which is much shorter than the resting time. This suggests that the acquired charge from the integration of pulse might not be the whole charge, but several small discharges might follow the first one during the time the particle is resting on the electrode.","PeriodicalId":125787,"journal":{"name":"Conference Record of the 1999 IEEE Industry Applications Conference. Thirty-Forth IAS Annual Meeting (Cat. No.99CH36370)","volume":"113 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1999-10-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116018163","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

Calculation of losses in ferro- and ferrimagnetic materials based on the modified Steinmetz equation 基于修正Steinmetz方程的铁和铁磁材料损耗计算

Conference Record of the 1999 IEEE Industry Applications Conference. Thirty-Forth IAS Annual Meeting (Cat. No.99CH36370) Pub Date : 1999-10-03 DOI: 10.1109/IAS.1999.806023

J. Reinert, A. Brockmeyer, R. W. D. Doncker

{"title":"Calculation of losses in ferro- and ferrimagnetic materials based on the modified Steinmetz equation","authors":"J. Reinert, A. Brockmeyer, R. W. D. Doncker","doi":"10.1109/IAS.1999.806023","DOIUrl":"https://doi.org/10.1109/IAS.1999.806023","url":null,"abstract":"This paper discusses the influence of nonsinusoidal flux-waveforms on the remagnetization losses in ferro- and ferrimagnetic materials of inductors, transformers and electrical machines used in power electronic applications. The nonsinusoidal changes of flux originate from driving these devices by nonsinusoidal voltages and currents at different switching frequencies. A detailed examination of a dynamic hysteresis model shows that the physical origin of losses in magnetic material is the average remagnetization velocity rather than the remagnetization frequency. This principle leads to a modification of the most common calculation rule for magnetic core losses, i.e., to the \"modified Steinmetz equation\" (MSE). In the MSE the remagnetization frequency is replaced by an equivalent frequency which is calculated from the average remagnetization velocity. This approach allows, for the first time, to calculate the losses in the time domain for arbitrary waveforms of flux while using the available set of parameters of the classical Steinmetz equation, DC premagnetization of the material, having a substantial influence on the losses, can also be included. Extensive measurements verify the modified Steinmetz equation presented in this paper.","PeriodicalId":125787,"journal":{"name":"Conference Record of the 1999 IEEE Industry Applications Conference. Thirty-Forth IAS Annual Meeting (Cat. No.99CH36370)","volume":"46 9 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1999-10-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116394458","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: 643