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2018 5th International Conference on Electrical and Electronic Engineering (ICEEE)最新文献

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Simulation of ARM and x86 microprocessors using in-order and out-of-order CPU models with Gem5 simulator 用Gem5模拟器模拟ARM和x86微处理器的有序和无序CPU模型
Pub Date : 2018-05-03 DOI: 10.1109/ICEEE2.2018.8391354
A. Abudaqa, Talal M. Al-Kharoubi, M. Mudawar, Armin Kobilica
In the past, ARM and Intel x86 computer processors were leaders in the different specialized areas with no competing interest. While Intel was building processors for the PCs and servers, ARM was concentrated on the handheld devices. Nowadays, with no hard limits in computing power between the different sizes of devices, ARM and Intel-based microprocessors are competitors. In this paper, a comparative study is done to evaluate the performance of the two microprocessors. Both, the in-order and the out-of-order, CPU models are used within each architecture, and four performance metrics (total consumed energy, throughput, average cycles per instruction (CPI), and L2 cache miss rate) are used to evaluate the work. The well-known computer architecture simulator, Gem5, is used to accomplish the work. Results show that ARM microprocessor outperforms x86 microprocessor in the most cases.
在过去,ARM和Intel x86计算机处理器是不同专业领域的领导者,没有竞争利益。当英特尔为个人电脑和服务器制造处理器时,ARM专注于手持设备。如今,由于不同尺寸的设备在计算能力上没有硬性限制,ARM和基于英特尔的微处理器成为了竞争对手。本文对这两种微处理器的性能进行了比较研究。在每个体系结构中都使用有序和无序的CPU模型,并使用四个性能指标(总消耗能量、吞吐量、每条指令的平均周期(CPI)和L2缓存缺失率)来评估工作。使用著名的计算机体系结构模拟器Gem5来完成这项工作。结果表明,ARM微处理器在大多数情况下优于x86微处理器。
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引用次数: 14
Effect of impact capacitor on overvoltage in neutral bus of converter station 冲击电容器对换流站中性母线过电压的影响
Pub Date : 2018-05-03 DOI: 10.1109/ICEEE2.2018.8391309
Yu Zhang, S. Xie, Chenmeng Zhang, Xuelin Zhao
In order to study the suppression effect of the overvoltage when the Impact capacitor is applied in the neutral bus of the High-voltage Converter station, this paper takes the BIN-JIN HVDC transmission project as the research object and establishes an internal overvoltage calculation model in the PSCAD/EMTDC. The variation of overvoltage amplitude in neutral bus which is in the ground short circuit fault and valve triggering pulse loss fault situation is calculated and analyzed under different impact capacitor configuration schemes. The calculation results showed: installing impact capacitor can significantly reduce the overvoltage level in the neutral Bus of the converter station; and the more the capacity of the impact capacitor increased, the more obvious the suppression effect is; The impact capacitor has a restraining effect on the overvoltage of the neutral bus only when it is on the same side with the bus. To sum up, the impact capacitor could be installed to reduce the level of the inner overvoltage.
为了研究高压换流站中性母线施加冲击电容对过电压的抑制效果,本文以BIN-JIN高压直流输电工程为研究对象,建立了PSCAD/EMTDC内部过电压计算模型。计算分析了不同冲击电容配置方案下,在接地短路故障和阀触发脉冲损耗故障情况下,中性点母线过电压幅值的变化。计算结果表明:安装冲击电容器可显著降低换流站中性母线过电压水平;且冲击电容容量越大,抑制效果越明显;冲击电容器只有在与母线同侧时才对中性母线的过电压有抑制作用。综上所述,可以安装冲击电容来降低内部过电压的水平。
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引用次数: 1
Disturbance observer based fuzzy sliding mode control of PV grid connected inverter 基于扰动观测器的光伏并网逆变器模糊滑模控制
Pub Date : 2018-05-03 DOI: 10.1109/ICEEE2.2018.8391293
J. Fei, Yunkai Zhu, Mingang Hua
In this paper, a disturbance observer based fuzzy sliding mode control (DOBFSMC) strategy is proposed for a single-phase PV grid-connected inverter. A disturbance observer is designed to estimate the system uncertainties in real time and a sliding mode controller that is designed with the output information of the disturbance observer is employed to control the output voltage of the DC-AC inverter, a fuzzy system is used to approximate the upper bound of the observation error between the actual disturbance and its observation value in order to improve the performance of the control system. The inverter has strong robustness since the disturbances can be adaptively compensated and the chattering is greatly reduced since the switching gain can be very small for the upper bound of observation error is estimated by the fuzzy system. Finally, simulation results verify the effectiveness of the proposed method
针对单相光伏并网逆变器,提出了一种基于扰动观测器的模糊滑模控制策略(DOBFSMC)。设计了扰动观测器实时估计系统的不确定性,利用扰动观测器的输出信息设计滑模控制器控制直流-交流逆变器的输出电压,利用模糊系统逼近实际扰动与其观测值之间的观测误差上界,以提高控制系统的性能。该逆变器具有较强的鲁棒性,因为它可以自适应补偿干扰,并且由于模糊系统估计了观测误差的上界,开关增益很小,大大减少了抖振。最后,仿真结果验证了所提方法的有效性
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引用次数: 0
A novel active element: Fully differential voltage differencing current controlled current conveyor (FD-VDCCC) and filter applications 一种新型有源元件:全差动压差电流控制电流输送机(FD-VDCCC)和滤波器应用
Pub Date : 2018-05-03 DOI: 10.1109/ICEEE2.2018.8391304
Okkes Gokalp Sokmen, M. Alçı
In this study, a novel active signal processing block called Fully Differential Voltage Differencing Current Controlled Current Conveyor (FD-VDCCC) is proposed. The input and the output stages of FD-VDCCC consist of a fully differential operational transconductance amplifier and a current controlled differential voltage current conveyor, respectively. The FD-VDCCC can be adjusted by bias currents. The proposed active element has not only various differential voltage and current input terminals but also various voltage and current output terminals. Hence, the proposed active element complies with current mode or mixed mode circuit designs. In the study, in order to demonstrate the functionality of the considered structure, FD-VDCCC based current controlled universal filter is proposed. The study also contains the CMOS realization of FD-VDCCC and SPICE simulation results obtained with 180 nm TSMC CMOS technology parameters for the proposed FD-VDCCC and universal filter structures.
本文提出了一种新型的主动信号处理模块——全差分压差电流控制电流输送机(FD-VDCCC)。FD-VDCCC的输入级和输出级分别由一个全差分操作跨导放大器和一个电流控制的差分电压电流输送器组成。FD-VDCCC可以通过偏置电流进行调节。本发明的有源元件不仅具有多种差分电压和电流输入端子,而且具有多种差分电压和电流输出端子。因此,所提出的有源元件符合电流模式或混合模式电路设计。在研究中,为了证明所考虑的结构的功能,提出了基于FD-VDCCC的电流控制通用滤波器。本研究还包含了FD-VDCCC的CMOS实现和采用180 nm TSMC CMOS技术对FD-VDCCC和通用滤波器结构参数的SPICE仿真结果。
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引用次数: 2
An IoT based smart thermostat 基于物联网的智能恒温器
Pub Date : 2018-05-03 DOI: 10.1109/ICEEE2.2018.8391341
Levent Özgür, V. Akram, Moharram Challenger, O. Dagdeviren
The heating system and related thermostat is an important part of any home. As part of a solution for an intelligent home, the thermostat needs to behave in a way that controls the heating system to save the energy by providing automatic adjustments. In this paper, an IoT based smart thermostat is designed and implemented. The nodes in the system consist of DHT22 temperature sensors connected to Arduinos and communicating with each other through nRF24L01 modules. The sink node uses an ESP8266 to the Internet. The system can interact with authorized family members through a mobile application by sending push notifications. They also can adjust the home heating settings via this application. In this way, the system can intelligently turn the heating system on or off considering the availability of people at home. In addition, the system can adjust the rooms' temperature automatically and save the energy.
供暖系统和相关的恒温器是任何家庭的重要组成部分。作为智能家居解决方案的一部分,恒温器需要通过自动调节来控制加热系统以节省能源。本文设计并实现了一种基于物联网的智能恒温器。系统中的节点由DHT22温度传感器与Arduinos连接,通过nRF24L01模块相互通信。汇聚节点通过ESP8266连接到Internet。该系统可以通过移动应用程序发送推送通知,与授权的家庭成员进行互动。他们还可以通过这个应用程序调整家庭供暖设置。通过这种方式,系统可以根据家中人员的可用性智能地打开或关闭供暖系统。此外,该系统还能自动调节房间温度,节约能源。
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引用次数: 20
Typical economic model for calculating the saving norm of replacement HPS street lighting by LED fixtures in access road of gas production company at GCC 计算GCC采气公司出入口道路用LED灯具替代HPS路灯照明节能指标的典型经济模型
Pub Date : 2018-05-03 DOI: 10.1109/ICEEE2.2018.8391327
Muhammad M. A. S. Mahmoud
This paper illustrates the advantages of the LED as a valid option to replace the HPS street lighting. Economic model is introduced to determine the Annual Saving Norm for replacing access road HPS light fitting installed in a GCC gas production company by LED fixtures. This Annual Saving Norm is calculated based on two main aspects. "Company Benefits", in which the Gas Company can gain it directly. "National Benefits" that can be achieved by creating better gas sales opportunity for the county and by the reduction of the CO2 emission and hence the pollution.
本文阐述了LED作为替代HPS路灯的有效选择的优势。介绍了采用经济模型确定海合会燃气生产公司用LED灯具更换出入口公路HPS灯具的年节约标准。这个年度节约标准是根据两个主要方面来计算的。“公司利益”,燃气公司可直接获得。“国家利益”可以通过为国家创造更好的天然气销售机会和减少二氧化碳排放从而减少污染来实现。
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引用次数: 11
A compact stepped impedance 7th order microstrip filter 一种紧凑的阶跃阻抗7阶微带滤波器
Pub Date : 2018-05-03 DOI: 10.1109/ICEEE2.2018.8391300
Heba El-Halabi, H. Issa
This paper presents a miniaturized step impedance low pass filter based on slow wave microstrip transmission lines. The miniaturized filter operating at 2.45 GHz is designed and implemented on a double-layer PCB substrate with metallic vias embedded in the lower substrate layer to provide the slow-wave effect. Based on this concept, a 41% size miniaturization is achieved as compared to conventional microstrip filter prototype. The measured filter performance present a return loss of better than 20 dB and an insertion loss of 0.25 dB in the pass band.
提出了一种基于慢波微带传输线的小型化阶跃阻抗低通滤波器。在双层PCB基板上设计并实现了工作频率为2.45 GHz的小型化滤波器,并在底层基板中嵌入了金属通孔以提供慢波效应。基于这一概念,与传统微带滤波器原型相比,实现了41%的尺寸小型化。所测滤波器的回波损耗优于20 dB,通带插入损耗为0.25 dB。
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引用次数: 0
Dielectric loaded Yagi fed dual band pyramidal horn antenna for breast hyperthermia treatment 介电负载八木馈电双波段锥形喇叭天线用于乳房热疗治疗
Pub Date : 2018-05-03 DOI: 10.1109/ICEEE2.2018.8391355
M. Tayel, T. Abouelnaga, A. Elnagar
This paper introduces the detailed design and experimental demonstration of a narrow beamwidth and low side lobe level pyramidal horn antenna based on placing a ten directors Yagi array as an exciter instead of simple monopole antenna. Teflon rectangular parallelepiped is used as a dielectric material where Yagi array is placed for horn feeding purpose. Directors' length, position, separation, and their number are chosen carefully to obtain a high gain, suitable 3 dB beamwidth, and suitable side lobe level as compared to conventional one. The proposed pyramidal horn antenna achieves a simulated gain, 3 dB beamwidth, and side lobe level of 13.8 dBi, 37.4 degrees, and -26.3 dB at 4.86 GHz, respectively. The proposed antenna is mainly designed for breast cancer hyperthermia therapy where narrow beamwidth, low side lobe level, and high gain are essentially requisites. For verification purpose, the proposed antenna irradiate a breast phantom for 10 minutes and with 2 watt at its input port. The breast phantom temperature is elevated 4 degrees above normal temperature. These results candidates the proposed antenna for breast cancer hyperthermia treatment.
本文介绍了一种以十方向八木阵列作为激励器代替单极天线的窄波束宽低旁瓣水平锥体喇叭天线的详细设计和实验演示。采用聚四氟乙烯矩形平行六面体作为介质材料,其中放置八木阵列用于喂角。董事的长度,位置,间距,和他们的数量精心选择,以获得高增益,合适的3db波束宽度,和合适的旁瓣电平相比,传统的。所提出的锥体喇叭天线在4.86 GHz时的模拟增益、3 dB波束宽度和旁瓣电平分别为13.8 dBi、37.4度和-26.3 dB。该天线主要是为乳腺癌热疗设计的,在这种治疗中,窄波束宽度、低旁瓣电平和高增益是必不可少的。为了验证目的,所提出的天线在其输入端口以2瓦的功率照射乳房幻影10分钟。乳房幻温比正常温度高4度。这些结果可作为乳腺癌热疗治疗的候选天线。
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引用次数: 5
Design and loss analysis of a 200-W GaN based active clamp forward converter 200w GaN有源箝位正激变换器的设计与损耗分析
Pub Date : 2018-05-03 DOI: 10.1109/ICEEE2.2018.8391308
Özgür Bulut, M. Aydemir
Increasing demand on higher efficiency, lower volume and lower cost power converters forces especially the power electronics engineers to conduct research on different kinds of semiconductor other than Si MOSFETs. In fact, the technological improvements push the Si MOSFETs to their theoretical bound that limit power density of the power converters. The GaN High Electron Mobility Transistor (HEMT) is one of the most promising alternative to the conventional Si MOSFETs. In this paper, GaN HEMT devices are analyzed and compared to Si MOSFET devices. The design considerations and complexities are covered by indicating the electrical characteristics of GaN HEMT devices. Furthermore, in order to evaluate the benefits and disadvantages of the GaN HEMT; an active clamp forward converter is designed. Based on simulation results, converter state of art and advantages and disadvantages of using GaN HEMT are presented.
对更高效率,更小体积和更低成本的功率转换器的需求不断增加,特别是电力电子工程师对硅mosfet以外的不同类型的半导体进行研究。事实上,技术的进步将硅mosfet推向了它们的理论极限,限制了功率转换器的功率密度。氮化镓高电子迁移率晶体管(HEMT)是传统硅mosfet最有前途的替代品之一。本文对GaN HEMT器件进行了分析,并与Si MOSFET器件进行了比较。通过指出GaN HEMT器件的电气特性,涵盖了设计考虑因素和复杂性。此外,为了评估GaN HEMT的优缺点;设计了一种有源箝位正激变换器。在仿真结果的基础上,介绍了GaN HEMT变换器的研究现状和优缺点。
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引用次数: 8
Domestic electrical load management in smart grids and classification of residential loads 智能电网中的国内用电负荷管理与居民负荷分类
Pub Date : 2018-05-03 DOI: 10.1109/ICEEE2.2018.8391346
Onur Ayan, B. Turkay
Peak demand is an important problem in the electricity grid and this problem was generally solved by supply side management in the past. However, nowadays the demand side management sources have taken attention due to economic and environmental constraints. Normally, reliable electricity supply to customer can be maintained by either increasing the network capacity (supply side management) or reducing the peak electricity demand on the network (demand side management) but reducing electricity consumption within demand side management rather than increasing network capacity provides operational and financial benefits to countries. Demand response in the residential sector can plan an important role in reducing peak demand. For this reason, in this study, load management system was carried out in order to analyze effects of demand response for residential area using Matlab/Simulink. Some residential loads were shifted to off- peak hours using load management system in order to reduce peak demand and electricity bill saving which can be gained through energy management system was analyzed on consumers. Additionally, a comprehensive study of the classification of residential loads was analyzed in this work.
高峰需求是电网中的一个重要问题,过去一般通过供给侧管理来解决。然而,目前由于经济和环境的制约,需求侧管理资源已引起人们的重视。通常情况下,通过增加电网容量(供应侧管理)或减少电网峰值电力需求(需求侧管理)可以维持对客户的可靠电力供应,但在需求侧管理范围内减少电力消耗而不是增加网络容量可以为国家提供运营和财务利益。住宅部门的需求响应可以在减少高峰需求方面发挥重要作用。为此,本研究利用Matlab/Simulink开发了负荷管理系统,分析小区需求响应的效果。利用负荷管理系统将部分居民负荷转移到非高峰时段,以减少高峰需求,并对用户进行了节能分析。此外,本文还对住宅负荷的分类进行了全面的研究。
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引用次数: 21
期刊
2018 5th International Conference on Electrical and Electronic Engineering (ICEEE)
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