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Iee Journal on Electric Power Applications最新文献

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Control of a Naturally Commutated Inverter-Fed Variable-Speed Synchronous Motor 自然换相变频调速同步电机的控制
Iee Journal on Electric Power Applications Pub Date : 1979-12-01 DOI: 10.1049/IJ-EPA.1979.0032
N.A.H. Issa, A. Williamson
{"title":"Control of a Naturally Commutated Inverter-Fed Variable-Speed Synchronous Motor","authors":"N.A.H. Issa, A. Williamson","doi":"10.1049/IJ-EPA.1979.0032","DOIUrl":"https://doi.org/10.1049/IJ-EPA.1979.0032","url":null,"abstract":"This paper describes the design and construction of the control circuits of a naturally commutated current-source inverter feeding a synchronous motor to give a variable-speed drive. The main contributions of the paper deal with the circuits required to control the inverter from rotor position, and to control the system for all modes of operation including regenerative braking. The performance of a prototype is illustrated by test results and recordings.","PeriodicalId":337453,"journal":{"name":"Iee Journal on Electric Power Applications","volume":"17 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1979-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"120948676","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
Steady-State Line-Line Loading of the Synchronous Machine: Exact Solution 同步电机的稳态线-线负载:精确解
Iee Journal on Electric Power Applications Pub Date : 1979-12-01 DOI: 10.1049/IJ-EPA:19790033
C. Jones
{"title":"Steady-State Line-Line Loading of the Synchronous Machine: Exact Solution","authors":"C. Jones","doi":"10.1049/IJ-EPA:19790033","DOIUrl":"https://doi.org/10.1049/IJ-EPA:19790033","url":null,"abstract":"The mathematically exact solution for the steady-state line-line short circuit of the basic synchronous generator is developed from first principles and extended to include the effects of saliency and dampers. The analysis is applicable to steady-state line-line loading and also to the performance of the single-phase machine. The solution is checked by comparison with the numerical step-by-step solution and supported by a series of test results. It enables the effects of the damper windings to be investigated in what is probably their simplest form. Although the full solution is necessary for line-line loading, it is found that in the particular case of steady short circuit the effects of resistance are negligible even for a small machine; simple formulas are deveoped for the armature and field currents and the line voltage.","PeriodicalId":337453,"journal":{"name":"Iee Journal on Electric Power Applications","volume":"5 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1979-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130229844","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: 3
Induction Motors for Crane Applications 起重机用感应电动机
Iee Journal on Electric Power Applications Pub Date : 1979-12-01 DOI: 10.1049/IJ-EPA:19790031
R. Crowder, Gordon A. Smith
{"title":"Induction Motors for Crane Applications","authors":"R. Crowder, Gordon A. Smith","doi":"10.1049/IJ-EPA:19790031","DOIUrl":"https://doi.org/10.1049/IJ-EPA:19790031","url":null,"abstract":"The paper describes a control system for 4-quadrant operation of induction motors with characteristics suitable for crane hoist duty. The control system is based on a combination of stator-voltage control and rotor chopping. A thyristor stator-voltage regulator is used to provide a means of motor-speed closed-loop control. The regulator automatically reverses the phase rotation for plug braking or provides d.c. to the stator for injection braking as determined by load conditions. The rotor chopper operates with a duty cycle that is a predetermined function of rotor speed. Analysis of the chopper action in the rotor is used to determine the optimum function required to develop the maximum possible torque per stator ampere over the operating speed range. Different control functions are found to be necessary for motoring and d.c.-injection modes of operation. Analysis of the system and experimental results are presented showing successful 4-quadrant operation.","PeriodicalId":337453,"journal":{"name":"Iee Journal on Electric Power Applications","volume":"163 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1979-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121341746","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
Inverter Drive for Doubly Salient Reluctance Motor: Its Fundamental Behaviour, Linear Analysis and Cost Implications 双凸阻电机的逆变器驱动:基本特性、线性分析及成本影响
Iee Journal on Electric Power Applications Pub Date : 1979-12-01 DOI: 10.1049/IJ-EPA.1979.0030
W. F. Ray, R. Davis
{"title":"Inverter Drive for Doubly Salient Reluctance Motor: Its Fundamental Behaviour, Linear Analysis and Cost Implications","authors":"W. F. Ray, R. Davis","doi":"10.1049/IJ-EPA.1979.0030","DOIUrl":"https://doi.org/10.1049/IJ-EPA.1979.0030","url":null,"abstract":"A variable-speed drive using a doubly salient variable reluctance motor, because of its ability to operate efficiently from unidirectional winding currents, enables the number of main switching devices in the inverter to be halved, yielding a very economical brushless drive. The drive is analysed using a linear model for the motor, yielding phase-current waveforms which enable an economical design for the thyristor inverter and provide guidance for a motor design which will optimise the performance/cost ratio of the drive as a whole. A control strategy for firing and turning off the inverter thyristors at appropriate rotor angles for a traction application also emerges from the analysis. Experimental waveforms exhibit shapes similar to those predicted, and the results of this analysis have been of great value in designing such a drive for a battery vehicle.","PeriodicalId":337453,"journal":{"name":"Iee Journal on Electric Power Applications","volume":"98 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1979-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121715525","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: 62
Characteristics of a Heteropolar Linear Synchronous Machine with Passive Secondary 无源二次型异极直线同步电机特性研究
Iee Journal on Electric Power Applications Pub Date : 1979-12-01 DOI: 10.1049/IJ-EPA.1979.0034
M. Balchin, J. Eastham
{"title":"Characteristics of a Heteropolar Linear Synchronous Machine with Passive Secondary","authors":"M. Balchin, J. Eastham","doi":"10.1049/IJ-EPA.1979.0034","DOIUrl":"https://doi.org/10.1049/IJ-EPA.1979.0034","url":null,"abstract":"Test results are presented for a novel form of heteropolar linear synchronous machine. The results show that the machine is capable of providing both thrust and lift force at relatively high efficiencies and power factors.A simple control scheme is described that enables independent variation of lift and thrust to be made. This is accomplished by the use of ‘constant-current’ supplies and operation at a fixed torque angle of 90°.Design formulas are derived, and performance predictions obtained from them are shown to agree well with the test results.","PeriodicalId":337453,"journal":{"name":"Iee Journal on Electric Power Applications","volume":"38 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1979-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125053211","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: 14
Loss Minimisation in 3-phase Induction Motors with p.w.m. Inverter Supplies 带p.w.m逆变电源的三相感应电动机的损耗最小化
Iee Journal on Electric Power Applications Pub Date : 1979-10-01 DOI: 10.1049/IJ-EPA.1979.0027
G. Creighton, I. Smith, A. F. Mergen
{"title":"Loss Minimisation in 3-phase Induction Motors with p.w.m. Inverter Supplies","authors":"G. Creighton, I. Smith, A. F. Mergen","doi":"10.1049/IJ-EPA.1979.0027","DOIUrl":"https://doi.org/10.1049/IJ-EPA.1979.0027","url":null,"abstract":"The paper describes the constraints on the selection of the pulse-width-modulated sinewaves produced by a 3-phase inverter. An example of a 7.5 kW induction-motor drive is used to demonstrate how waveforms can be selected to ensure an almost constant flux density throughout the required frequency range, together with a minimum motor loss. A comparison is made between experimental and theoretical results for the performance of the motor, and also between the performances when fed with sinusoidal and with pulse-width-modulated waveforms.","PeriodicalId":337453,"journal":{"name":"Iee Journal on Electric Power Applications","volume":"85 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1979-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126809343","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
Variable-Speed a.c. Drives with Slip-Ring Induction Machines and a Resistively Loaded Force Commutated Rotor Chopper 变速交流驱动器与滑环感应电机和电阻负载力换向转子斩波器
Iee Journal on Electric Power Applications Pub Date : 1979-10-01 DOI: 10.1049/IJ-EPA.1979.0025
J. D. Wyk
{"title":"Variable-Speed a.c. Drives with Slip-Ring Induction Machines and a Resistively Loaded Force Commutated Rotor Chopper","authors":"J. D. Wyk","doi":"10.1049/IJ-EPA.1979.0025","DOIUrl":"https://doi.org/10.1049/IJ-EPA.1979.0025","url":null,"abstract":"The paper deals with variable-speed drives using an induction machine with wound rotor, controlled by variation of an external rotor resistor by a parallel electronic chopper. After tracing the historical development of this type of controlled drive, the power-flow relationships are investigated to arrive at the fundamental characteristics of this type of system. Considerations leading to the selection of a variable-slip system with rotor control rather than stator control are covered, leading to a discussion of the structure for a simple variable-speed drive using a force-commutated rotor chopper. The system is modelled by idealising the power switches and analysing their behaviour as function of slip, and the switched induction machine is modelled by a torque directly proportional to chopper input current. A second-order total system model is arrived at by taking only a speed-loop time constant and a mechanical time constant into account. Particular attention is given to establishing design relationships for this kind of drive. Component ratings, rotor resistor value and commutation requirements are related to operational requirements such as maximum slip, minimum torque, rated current and minimum expected current. No detail of power-chopper design is given. Some practical characteristics of typical variable-speed drives in the 11 kW to 22 kW range arc presented to illustrate the validity of the approach taken in analysis and design. These results indicate that the simple analysis presented is adequate for understanding and predicting the steady-state behaviour of the system. The second-order model gives sufficient accuracy in predicting dynamic behaviour to be useful for the design of systems in the response range normally applicable to this type of drive in practice. When designing systems for fast dynamic response, the modelling will have to be improved.","PeriodicalId":337453,"journal":{"name":"Iee Journal on Electric Power Applications","volume":"15 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1979-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129644536","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: 5
New Approach to Power Convertor Circuits 功率变换器电路的新方法
Iee Journal on Electric Power Applications Pub Date : 1979-10-01 DOI: 10.1049/IJ-EPA.1979.0029
P. Mehta, T. Thomson, W. Un
{"title":"New Approach to Power Convertor Circuits","authors":"P. Mehta, T. Thomson, W. Un","doi":"10.1049/IJ-EPA.1979.0029","DOIUrl":"https://doi.org/10.1049/IJ-EPA.1979.0029","url":null,"abstract":"The technique of `shorting-coil' switching proposed in this paper provides a novel method of static power conversion. It overcomes the restrictions imposed by the voltage/current ratings of the available power, semiconductor devices and conventional convertor circuit configurations. This is achieved by modulating flux waves in multilimb magnetic circuits via auxiliary windings called shorting coils.","PeriodicalId":337453,"journal":{"name":"Iee Journal on Electric Power Applications","volume":"41 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1979-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133125454","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: 2
Reduction of Vibrational Torque in 2-phase Servomotors 两相伺服电机振动转矩的减小
Iee Journal on Electric Power Applications Pub Date : 1979-10-01 DOI: 10.1049/IJ-EPA:19790026
Hiroshi Kurokui, N. Michio
{"title":"Reduction of Vibrational Torque in 2-phase Servomotors","authors":"Hiroshi Kurokui, N. Michio","doi":"10.1049/IJ-EPA:19790026","DOIUrl":"https://doi.org/10.1049/IJ-EPA:19790026","url":null,"abstract":"This paper proposes a novel method for decreasing the undesirable torque-vibration of a 2-phase servomotor in an unbalanced-drive condition. The cancellation is achieved by superposing odd harmonic signals on the voltage applied to the control winding. A testrun indicated that the vibration on the shaft could be reduced to ? by cancelling the second and the fourth harmonic components.","PeriodicalId":337453,"journal":{"name":"Iee Journal on Electric Power Applications","volume":"27 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1979-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125341439","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: 1
Amplifier-Type Voltage Transformer, Design and Experience 放大器型电压互感器，设计与经验
Iee Journal on Electric Power Applications Pub Date : 1979-10-01 DOI: 10.1049/IJ-EPA.1979.0028
J. Lisser
{"title":"Amplifier-Type Voltage Transformer, Design and Experience","authors":"J. Lisser","doi":"10.1049/IJ-EPA.1979.0028","DOIUrl":"https://doi.org/10.1049/IJ-EPA.1979.0028","url":null,"abstract":"Capacitive-coupled amplifier-type voltage transformers are described that are used to measure voltages in metal-clad h.v. switchgear. The stack capacitor of an active voltage divider forms a part of the switchgear itself. Tests and long-term experience in substations show the accuracy and long-term stability to be better than 0.2%. Tests on the dynamic performance are discussed.","PeriodicalId":337453,"journal":{"name":"Iee Journal on Electric Power Applications","volume":"37 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1979-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126395392","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: 1
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