Conference Record of 1998 IEEE Industry Applications Conference. Thirty-Third IAS Annual Meeting (Cat. No.98CH36242)最新文献_第4页

Dynamometer control for emulation of mechanical loads 用于机械负荷仿真的测功机控制

Conference Record of 1998 IEEE Industry Applications Conference. Thirty-Third IAS Annual Meeting (Cat. No.98CH36242) Pub Date : 1998-10-12 DOI: 10.1109/IAS.1998.730342

C. Hewson, G. Asher, M. Sumner

{"title":"Dynamometer control for emulation of mechanical loads","authors":"C. Hewson, G. Asher, M. Sumner","doi":"10.1109/IAS.1998.730342","DOIUrl":"https://doi.org/10.1109/IAS.1998.730342","url":null,"abstract":"In this paper, a test facility which is capable of the electronic emulation of dynamic mechanical loads is presented. The primary objective of such a facility is to provide an aid to the testing and commissioning of modern commercial three-phase AC variable speed inverter drives. The experimental test facility comprises a 'DC dynamometer' capable of emulating both linear and nonlinear dynamic mechanical load systems. A detailed description of the control structure employed to create the load emulation is developed. The limitation of practical microprocessor implementation of the control scheme and the restriction that, in order to maintain a flexible test facility, the scheme should operate with no direct measure of torque are explored. The paper also outlines the hardware structure of the experimental rig and experimental results showing good emulation for both linear and nonlinear loads are presented. Operation of the test facility is illustrated with a commissioning example, in which a passenger lift system is emulated, and a test example in which an inverter is tested under a high starting load.","PeriodicalId":321042,"journal":{"name":"Conference Record of 1998 IEEE Industry Applications Conference. Thirty-Third IAS Annual Meeting (Cat. No.98CH36242)","volume":"13 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1998-10-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130885108","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: 23

A simple-control new soft-switched PWM inverter 一种简单控制的新型软开关PWM逆变器

Conference Record of 1998 IEEE Industry Applications Conference. Thirty-Third IAS Annual Meeting (Cat. No.98CH36242) Pub Date : 1998-10-12 DOI: 10.1109/IAS.1998.730313

Y. Murai, K. Adachi, H. Ishikawa

引用次数: 3

A new variable structure DC motor controller using genetic algorithms 一种基于遗传算法的变结构直流电动机控制器

Conference Record of 1998 IEEE Industry Applications Conference. Thirty-Third IAS Annual Meeting (Cat. No.98CH36242) Pub Date : 1998-10-12 DOI: 10.1109/IAS.1998.729769

Z. Al-Hamouz, H. Al-Duwaish

引用次数: 12

Frequency control of MOSFET full bridge power inverter for maximizing output power to megasonic transducer at 3 MHz MOSFET全桥功率逆变器的频率控制，以最大限度地输出功率到3兆赫兹的超高频换能器

Conference Record of 1998 IEEE Industry Applications Conference. Thirty-Third IAS Annual Meeting (Cat. No.98CH36242) Pub Date : 1998-10-12 DOI: 10.1109/IAS.1998.729758

Y. Mizutani, T. Suzuki, H. Ikeda, H. Yoshida, S. Shinohara

{"title":"Frequency control of MOSFET full bridge power inverter for maximizing output power to megasonic transducer at 3 MHz","authors":"Y. Mizutani, T. Suzuki, H. Ikeda, H. Yoshida, S. Shinohara","doi":"10.1109/IAS.1998.729758","DOIUrl":"https://doi.org/10.1109/IAS.1998.729758","url":null,"abstract":"The frequency of the MOSFET DC-to-RF power inverter is precisely set at the series resonant frequency of a megasonic transducer by controlling the oscillation frequency of the PLL when the MOSFET DC-to-RF power inverter is used to drive the megasonic transducer having an impedance of as low as 5 to 6 ohms or less. The frequency control system features a current sensor having an effective internal impedance of as low as 0.25 ohm which is negligible compared with the impedance of the megasonic transducer at the series resonant frequency. The impedance of the inverter load composed of the output transducer, matching capacitor, coaxial cable, megasonic transducer, and current sensor is calculated to determine the frequency control range of the PLL. In accordance with the result of calculation, the performance of the phase-frequency comparator, low pass filter, and VCO is decided. When the RF output power of the MOSFET power inverter was 60 W with a power conversion efficiency of 95%, the frequency control range was 2.8 MHz to 3.2 MHz. The PLL covers the range of frequency shifts and variations in the megasonic transducer and VCO.","PeriodicalId":321042,"journal":{"name":"Conference Record of 1998 IEEE Industry Applications Conference. Thirty-Third IAS Annual Meeting (Cat. No.98CH36242)","volume":"14 2","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1998-10-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"120987798","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: 28

PWM controlled single-stage converter operating in DCM/CCM for universal off-line applications PWM控制的单级转换器在DCM/CCM中工作，用于通用离线应用

Conference Record of 1998 IEEE Industry Applications Conference. Thirty-Third IAS Annual Meeting (Cat. No.98CH36242) Pub Date : 1998-10-12 DOI: 10.1109/IAS.1998.730354

T. Wu, Shih-An Liang, Y. Chen, C.-H. Yang

引用次数: 3

On-line estimation of IGBT junction temperature using on-state voltage drop 利用导通电压降在线估计IGBT结温

Conference Record of 1998 IEEE Industry Applications Conference. Thirty-Third IAS Annual Meeting (Cat. No.98CH36242) Pub Date : 1998-10-12 DOI: 10.1109/IAS.1998.730245

Yong-Seok Kim, S. Sul

引用次数: 115

An advanced tool for optimised design of power electronic circuits 电力电子电路优化设计的先进工具

Conference Record of 1998 IEEE Industry Applications Conference. Thirty-Third IAS Annual Meeting (Cat. No.98CH36242) Pub Date : 1998-10-12 DOI: 10.1109/IAS.1998.730266

H. Kragh, F. Blaabjerg, J. Pedersen

引用次数: 48

An adaptive control strategy for active power filters with voltage detection 电压检测有源电力滤波器的自适应控制策略

Conference Record of 1998 IEEE Industry Applications Conference. Thirty-Third IAS Annual Meeting (Cat. No.98CH36242) Pub Date : 1998-10-12 DOI: 10.1109/IAS.1998.730320

Y. Sato, S. Nagayama, H. Chigira, T. Kataoka

引用次数: 7

Decomposition of benzene using adsorbent-hybrid plasma reactor 用吸附-混合等离子体反应器分解苯

Conference Record of 1998 IEEE Industry Applications Conference. Thirty-Third IAS Annual Meeting (Cat. No.98CH36242) Pub Date : 1998-10-12 DOI: 10.1109/IAS.1998.729827

A. Ogata, K. Yamanouchi, K. Mizuno, S. Kushiyama, T. Yamamoto

引用次数: 6

Fluorescent lamp cold environment performance improvement 荧光灯冷环境性能改善

Conference Record of 1998 IEEE Industry Applications Conference. Thirty-Third IAS Annual Meeting (Cat. No.98CH36242) Pub Date : 1998-10-12 DOI: 10.1109/IAS.1998.730116

M. Graovac, F. Dawson, M. Fila, D. E. Cormack

{"title":"Fluorescent lamp cold environment performance improvement","authors":"M. Graovac, F. Dawson, M. Fila, D. E. Cormack","doi":"10.1109/IAS.1998.730116","DOIUrl":"https://doi.org/10.1109/IAS.1998.730116","url":null,"abstract":"Three approaches to improving the efficacy and start-up time of commercially available cold cathode fluorescent lamps under cold ambient conditions are evaluated in this paper: heating the tube on one side; heating the tube on two sides; heating the circumference of the outer tube. The internal power density generated by ion bombardment of the cathode and collisions in the plasma is indirectly obtained by matching simulated axial wall temperatures with those obtained by experiment at room temperature. The estimated power density is used to evaluate the temporal evolution of the axial surface wall temperature under different ambient conditions immediately after a cold start. All simulation results have been obtained using PHOENICS, a computational fluid flow program. Experiments have shown a good correlation between the time taken for the light output to reach an acceptable value and the time taken for the inner tube cold spot to reach a temperature of 0/spl deg/C. These results have been used to estimate heating time for different heater geometries and heater powers. The study shows that the conduction of heat to the outer glass envelope is the limiting process that controls the start-up time. Modest improvement in start-up time can be achieved by increasing heating power or by moving the heater to the side of the lamp. However, only a heater which entirely surrounds the lamp is capable of substantially decreasing the start-up time.","PeriodicalId":321042,"journal":{"name":"Conference Record of 1998 IEEE Industry Applications Conference. Thirty-Third IAS Annual Meeting (Cat. No.98CH36242)","volume":"21 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1998-10-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131494071","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: 4