2015 IEEE 8th GCC Conference & Exhibition最新文献_第8页

Energy efficient carrier aggregation for LTE-Advanced LTE-Advanced的高能效载波聚合

2015 IEEE 8th GCC Conference & Exhibition Pub Date : 2015-02-01 DOI: 10.1109/IEEEGCC.2015.7060066

Basel Barakat, K. Arshad

引用次数: 9

Correlative angles switching technique for switched reluctance motor drive systems 开关磁阻电机驱动系统的相关角开关技术

2015 IEEE 8th GCC Conference & Exhibition Pub Date : 2015-02-01 DOI: 10.1109/IEEEGCC.2015.7060036

S. A. AbouHashesh, M. El-Nemr, E. Rashad

{"title":"Correlative angles switching technique for switched reluctance motor drive systems","authors":"S. A. AbouHashesh, M. El-Nemr, E. Rashad","doi":"10.1109/IEEEGCC.2015.7060036","DOIUrl":"https://doi.org/10.1109/IEEEGCC.2015.7060036","url":null,"abstract":"Switched reluctance machines with its uncomplicated structure, low cost, high reliability and fault tolerance, is struggling to gain higher market share almost in all electric machinery utilities. Its simplicity encouraged researchers to apply a wide variety of classic and intelligent control techniques. These techniques are used to control the speed and torque via appropriate determination of switching-on and switching-off angles, usually associated with applying chopping in between. However, the nonlinear nature of the machine forced the utilization of sophisticated models to assist speed and torque controllers to select proper switching angles. Especially at high speeds, the uncontrolled current during freewheeling may produce negative torque and consequently torque ripples. Considerable research efforts have been performed to reduce such ripples. In this paper, a new switching technique is proposed. The technique aims to deal with the current waveform during excitation and freewheeling as a whole via correlating the switching-on, switching-off and current-end angles using simple calculations. The restrictions and limitations imposed on each switching angle to mollify operation conditions are investigated. An extensive simulated study is carried out to validate the reliability of the proposed technique. The results show the effectiveness of the proposed control method for practical high-speed applications.","PeriodicalId":127217,"journal":{"name":"2015 IEEE 8th GCC Conference & Exhibition","volume":"20 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128071552","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

Performance of optically-preamplified PDM-BPSK-M-ary PPM and PDM-QPSK-M-ary PPM systems with finite extinction ratio 有限消光比光预放大PDM-BPSK-M-ary PPM和PDM-QPSK-M-ary PPM系统的性能

2015 IEEE 8th GCC Conference & Exhibition Pub Date : 2015-02-01 DOI: 10.1109/IEEEGCC.2015.7060052

S. Mohamed, Mohamed S. Hassan, A. Elrefaie

引用次数: 5

The radiation-hardened voltage references on bipolar and JFET transistors 双极和JFET晶体管的抗辐射电压参考

2015 IEEE 8th GCC Conference & Exhibition Pub Date : 2015-02-01 DOI: 10.1109/IEEEGCC.2015.7060065

E. I. Starchenko, N. Prokopenko, P. Budyakov

引用次数: 4

Modelling a microwave chaotic generator for RADAR and communication systems 用于雷达和通信系统的微波混沌发生器建模

2015 IEEE 8th GCC Conference & Exhibition Pub Date : 2015-02-01 DOI: 10.1109/IEEEGCC.2015.7060059

M. Aseeri, Muhammad R. Ahmed, Ahmed Al Ghamdi, Majharul Talukder

引用次数: 1

Indirect space-vector PWM technique for three to nine phase matrix converters 三到九相矩阵变换器的间接空间矢量PWM技术

2015 IEEE 8th GCC Conference & Exhibition Pub Date : 2015-02-01 DOI: 10.1109/IEEEGCC.2015.7060029

S. Dabour, S. M. Allam, E. Rashad

{"title":"Indirect space-vector PWM technique for three to nine phase matrix converters","authors":"S. Dabour, S. M. Allam, E. Rashad","doi":"10.1109/IEEEGCC.2015.7060029","DOIUrl":"https://doi.org/10.1109/IEEEGCC.2015.7060029","url":null,"abstract":"This paper develops indirect space vector modulation technique for a three- to nine-phase matrix converter. The proposed technique is based on the double-stage configuration in which the matrix converter is modeled as three-phase rectifier followed by a nine-phase inverter. Both rectifier and inverter stages are controlled using space-vector modulation technique. In the rectifier stage, the modulation is based on input currents space-vectors. However, the modulation of the inverter stage is based on output voltages space-vectors. Two different schemes are suggested to control the inverter stage. In the first scheme, only largest space vectors are used in order to achieve maximum voltage transfer ratio of the inverter stage. In the second scheme, eight active vectors are used in each sector in order to minimize the switching stresses and to give a sinusoidal output voltage. It is observed that, using the first scheme results in achieving a higher value of the maximum overall voltage transfer ratio. However, the output voltages contain a significant amount of lower order harmonics. On the other hand, sinusoidal output voltages with a reduced value are obtained by second scheme. A sample of the obtained simulation results is presented to support the viability the proposed technique.","PeriodicalId":127217,"journal":{"name":"2015 IEEE 8th GCC Conference & Exhibition","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129572091","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: 13

Factors influencing the intention to buy from online stores: An empirical study in Jordan 影响网上商店购买意愿的因素:约旦的实证研究

2015 IEEE 8th GCC Conference & Exhibition Pub Date : 2015-02-01 DOI: 10.1109/IEEEGCC.2015.7060022

Rasha Abu-Shamaa, E. Abu-Shanab

引用次数: 17

Real-time DWT-based compression for wearable Electrocardiogram monitoring system 基于实时dwt压缩的可穿戴式心电图监测系统

2015 IEEE 8th GCC Conference & Exhibition Pub Date : 2015-02-01 DOI: 10.1109/IEEEGCC.2015.7060103

A. Al-Busaidi, L. Khriji, F. Touati, M. Rasid, A. Ben Mnaouer

引用次数: 5

Active Disturbance Rejection Control of a methanol-water separation distillation column 甲醇-水分离精馏塔自抗扰控制

2015 IEEE 8th GCC Conference & Exhibition Pub Date : 2015-02-01 DOI: 10.1109/IEEEGCC.2015.7060045

Fahad Al-Kalbani, Saif Mohamed Al Hosni, Jie Zhang

引用次数: 6

Economic Dispatch in power systems 电力系统的经济调度

2015 IEEE 8th GCC Conference & Exhibition Pub Date : 2015-02-01 DOI: 10.1109/IEEEGCC.2015.7060068

F. N. Al Farsi, Mohammed H. Albadi, N. Hosseinzadeh, A. Al Badi

引用次数: 21