2006 Eleventh International Middle East Power Systems Conference最新文献

The dynamic performance of an isolated self-excited induction generator driven by a variable-speed wind turbine 变速风力机驱动的隔离式自激感应发电机的动态特性

2006 Eleventh International Middle East Power Systems Conference Pub Date : 2006-12-01 DOI: 10.1109/ICCEP.2007.384267

M. M. Neam, F. El-Sousy, M. Ghazy, M. A. Abo-Adma

{"title":"The dynamic performance of an isolated self-excited induction generator driven by a variable-speed wind turbine","authors":"M. M. Neam, F. El-Sousy, M. Ghazy, M. A. Abo-Adma","doi":"10.1109/ICCEP.2007.384267","DOIUrl":"https://doi.org/10.1109/ICCEP.2007.384267","url":null,"abstract":"This paper presents the analysis, design and simulation or wind-powered self-excited induction generator (SEIG). The three-phase SEIG is driven by a variable-speed prime mover (VSPM) such as a wind turbine for the clean alternative renewable energy in rural areas. The VSPM is modeled by as a variable-speed separately-excited DC motor to simulate to the wind turbine. Also, the paper describes the dynamic performance of the VSPM and SEIG which includes prime mover torque, rotor speed, rotor frequency, and d-q axes dynamic stator voltages, As well as the electromagnetic torque and the magnetizing inductance of the SEIG. During voltage build up of the SEIG, the variation of the magnetizing inductance is considered. The input of wind powered SEIG is the wind speed which is not controllable. The wind speed could be, constant, or varying in a form of pulses, sinusoidal, or step change. Actually wind speed almost has a random variation according to the wind turbine location and its atmospheric conditions, but they can be set to operate within a given variation of speed. In this paper, the dynamic performance of the SEIG during loading instant is considered. The value of the excitation capacitance of the SEIG is also considered. The simulation results are given using Matlab7/Simulink toolbox program.","PeriodicalId":335848,"journal":{"name":"2006 Eleventh International Middle East Power Systems Conference","volume":"53 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2006-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128354453","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: 15

New technique for Maximum Efficiency and Minimum Operating Cost of induction motors based on Particle Swarm Optmization (PSO) 基于粒子群优化(PSO)的感应电机效率最大化和运行成本最小化新技术

2006 Eleventh International Middle East Power Systems Conference Pub Date : 2006-11-01 DOI: 10.1109/IECON.2006.347550

R.H.A. Hamid, A. Amin, R. Ahmed, A. El-Gammal

{"title":"New technique for Maximum Efficiency and Minimum Operating Cost of induction motors based on Particle Swarm Optmization (PSO)","authors":"R.H.A. Hamid, A. Amin, R. Ahmed, A. El-Gammal","doi":"10.1109/IECON.2006.347550","DOIUrl":"https://doi.org/10.1109/IECON.2006.347550","url":null,"abstract":"This paper presents the application of PSO for losses and operating cost minimization control in the induction motor drives. In this paper, two strategies for induction motor speed control are proposed. Those two strategies are based on PSO and called maximum efficiency strategy and minimum operating cost strategy. The proposed technique is based on the principle that the flux level in a machine can be adjusted to give the minimum amount of losses and minimum operating cost for a given value of speed and load torque. The main advantages of the proposed technique are; its simple structure and its straightforward maximization of induction motor efficiency and its operating cost for a given load torque. As will be demonstrated, PSO is so efficient in finding the optimum operating machines flux level. The optimum flux level is a function of the machine load and speed requirements. Simulation results show that a considerable energy and cost savings is achieved in comparison with the conventional method of operation under the condition of constant voltage to frequency ratio.","PeriodicalId":335848,"journal":{"name":"2006 Eleventh International Middle East Power Systems Conference","volume":"21 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2006-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124665061","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: 12

New three-level voltage source inverter with different 25 space voltage vectors 采用不同25空间电压矢量的新型三电平电压源逆变器

2006 Eleventh International Middle East Power Systems Conference Pub Date : 2006-11-01 DOI: 10.1109/PESA.2006.343079

M. H. Saied, M. Z. Mostafa, T. Abdel-Moneim, Hasan A. Yousef

{"title":"New three-level voltage source inverter with different 25 space voltage vectors","authors":"M. H. Saied, M. Z. Mostafa, T. Abdel-Moneim, Hasan A. Yousef","doi":"10.1109/PESA.2006.343079","DOIUrl":"https://doi.org/10.1109/PESA.2006.343079","url":null,"abstract":"This paper presents a new switching strategy controlling a new three-level voltage source inverter, resulting in different 25 space voltage-vectors. The new inverter combines some desirable features of two and three-level inverters. The proposed open-leg switching strategy (OLSS) intentionally opens one of the three inverter-legs per-time, in a pre-planned sequence. Thus, the number of allowed states becomes 64 compared to 27 originally proposed by other modulation strategies. For a wye-connected load operating at low modulation index (M<O.5 p.u.), the output phase-voltage becomes a seven-level, 12-step waveform, instead of the 6-step one. Thus, the total harmonic distortion is highly reduced. Three new conduction-modes are presented, each verifies a reduced common-mode-voltage time-variation (dv/dt), low third harmonic content, and reduced switching frequency harmonics. For higher modulation indexes, a 4th conduction mode is presented, eliminating the low frequency harmonics in the neutral-point current, consequently reducing the dc-link capacitors sizes, and cost. Analytical models, computer simulation results, and experimental verification are presented.","PeriodicalId":335848,"journal":{"name":"2006 Eleventh International Middle East Power Systems Conference","volume":"9 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2006-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116910885","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

High voltage engineering 高压工程

2006 Eleventh International Middle East Power Systems Conference Pub Date : 1900-01-01 DOI: 10.1016/c2009-0-09533-6

E. Kuffel, M. Abdullah

引用次数: 690

Control of power systems 电力系统控制

2006 Eleventh International Middle East Power Systems Conference Pub Date : 1900-01-01 DOI: 10.1016/b978-0-08-026709-8.50073-2

引用次数: 3