Current Predictive Control Method Research for Three-phase Voltage Source Inverter

近年来，随着新能源的加速开发利用，新能源的微网或并网发电等对逆变器的电流跟踪控制技术提出了更高的要求。三相电压型逆变器是目前应用最多最广的一种拓扑结构，其FCS-MPC（FiniteControlSet-ModelPredictiveControl）电流预测控制具有响应速度快、跟踪精度高、原理简单、控制灵活等优点，但也存在着控制延时、开关频率不受限制、模型参数敏感等问题，严重影响电流跟踪精度和逆变器性能的发挥等，尤其在多电平电压型逆变器的控制中更为明显。本文主要围绕这些问题展开以下研究工作： 建立了三相电压型逆变器的FCS-MPC电流预测控制的数学模型，分析了几种近似离散方法对模型精度的影响...In recent years, with the accelerated development and utilization of new energy, higher performance in the current tracking of inverter is required by the micro-grid or grid connected. Three-phase voltage source inverter is the topology which is the most widely used. Its current FCS-MPC (Finite Control Set-Model Predictive Control) takes the advantages of fast response, high accuracy, simple princ...学位：工学博士院系专业：物理与机电工程学院机电工程系_测试计量技术及仪器学号：1992009015364

The Development of Control System for Incessant Ingot Casting Production Lines

随着生产的发展，工业自动化控制的要求越来越高，尤其是多晶硅的定向凝固提纯生产线的控制系统要求更加苛刻。 本论文在掌握铸锭法提纯多晶硅的原理的基础上，为本课题设计的连续铸锭生产线开发一套温度控制系统，并达到生产工艺的控制要求，实现5N-6N级多晶硅产品的年产千吨级的产业化稳定生产。同时为该生产线建立自动化监控系统，实现对生产过程的实时监控，数据记录，自动化控制等，方便生产的运行和管理，提高生产效率，为产品质量的提高开发了分析平台并提供关键性的数据和图表分析等。论文主要包括以下研究： 1、掌握铸锭法生产多晶硅的原理，结合连续铸锭系统，设计了生产线总体控制方案； 2、根据连续铸锭炉的特点和铸锭...With the development of production, industrial automatic control has become increasingly demanding, especially polysilicon product line of incessant ingot casting requires higher control system. A set of temperature control system for incessant ingot casting product line is designed in this paper based on the polysilicon purification principle by casting ingot. It meets the production process ...学位：工学硕士院系专业：物理与机电工程学院机电工程系_机械电子工程学号：1992006115184

基于真空继电器的选相分合闸控制系统的设计与实现

为减少电力系统中断路器投切开关的分闸燃弧和合闸涌流,设计了一种永磁机构断路器的选相分合闸控制系统.系统通过真空继电器的二级驱动方式保证了机械动作时间可控且离散性小,解决了单级接触器驱动方式的机械动作时间离散性大和单级晶闸管驱动方式的驱动电路复杂性的问题.系统以STM32单片机为控制核心,通过电流突变捕捉时刻算法准确捕捉到分合闸动作完成时刻,进而计算出上一次的分合闸机械动作过程时间,预测出下一次的分合闸机械动作时刻,实现了控制系统根据设定的分合闸相角对断路器准确地进行分相投切控制的功能.控制系统在35kV永磁机构断路器上进行了实验,结果表明分合闸相角最大误差在±3°以内,达到了选相分合闸的精度要求.福建省科技计划项目(2016H6022

ONE NEW GENUS,TWO NEW SPECIES AND ONE NEW RECORD of CORYMORPHIDAE FROM THE SOUTH CHINA SEA(ANTHOMEDUSAE,CAPITATA)

记述了采自南海的棒状水母科COryMOrPHIdAE AllMAn,18721新属,肋突水母属COSTA HuAng,Xu ET lIn,gEn.nOV.,2新种,即南海肋突水母COSTA nAnHAIEnSIS HuAng,Xu ET lIn,SP.nOV.,间腺梅尔水母MAyErI InTErgOnA HuAng,Xu ET guO,SP.nOV.和1新纪录种,幼芽真囊水母EuPHySOrA gEMMIfErA bOuIllOn,1978。详细描述其形态特征,并绘图与本属其它种进行比较,模式标本保存于国家海洋局第三海洋研究所。Samples of Corymorphidae were collected from the South China Sea(4°-18° 30' N,109° 119°E),during Aug.2011.Based on the taxonomic system of Bouillon et al.(2006),at present time 12 valid genera of Corymorphidae are known,Euphysora M aas,1905 and Vannuccia Brinckmann-Voss,1967 are valid genera.In view of the used of the genus name of Vannuccia M arcus,1948,we wish to make the proposal of which the genus name of Vannuccia BrinckmannVoss,1967 is change to that of Mayeri Xu,Huang et Guo,gen.nov.,remembering the first author for the species of the genus.One new genus,Costa Huang,Xu et Lin,gen.nov.,two new species,i.e.Costa nanhaiensis Huang,Xu et Lin,sp.nov.,Mayeri intergona Huang,Xu et Guo,sp.nov.and one new record,Euphysora gemmifera Bouillon,1978 are described.All type specimens are deposited in the T hird Institute of Oceanography,SOA.T he specific diagnoses of one new genus and two new species are as follows.Costa Huang,Xu et Lin,gen.nov.Umberlla dome-shaped,exumbrella with 4 longitudinal ridges and ribs;manubrium large,the length no extending umbrella margin;mouth simple,circular;one well-developed solid tentacle terminating in large cnidocyst knob,3 marginal bulbs without tentacles;4 radial canals,1 circular canal;with mesenteries.T ype species:Costa nanhaiensis Huang,Xu et Lin,sp.nov.Etymology.T he genus name from Latin Costa,means rib and ridge,the new genus exumbrella with 4 longitudinal ridges and ribs.Costa nanhaiensis Huang,Xu et Lin,sp.nov.(Figs 1-2) Umbrella dome-shaped,exumbrella with 4 longitudinal ridges and ribs;manubrium large,extending no beyond umbrella margin,vacuolated endodermal cells in the upper part,gonads in the lower part;one well-developed solid tentacle terminating in two large cnidocyst knobs;3 marginal bulbs without tentacles;4 radial canal,1 circular canal;with mesenteries.Etymology.Form Latin,Nanhaiensis,means Nanhai,the species name refers to the first collected from Nanhai(the South China Sea).Mayeri intergona Huang,Xu et Guo,sp.nov.(Figs 3-4) Umbrella dome-shaped,without apical process,bell margin slightly asymmetrical;manubrium short,length about 1 /3 of the umbrella cavity,with a apical chamber;gonads global shaped,in interradial position of manubrium;one swollen marginal tentacle,hollow for half its length and ending in long,large,clubshaped swelling armed with cnidocysts.我国近海海洋综合调查与评价(908专项);“中国海洋生物种类名录和图谱”(908-ZC-Ⅱ-02);“908专项海洋生物样品库”和“全球变化与海气相互作用专项”资助---

Design and implementation of the energy management and intelligent monitoring system of a zero energy consumption house

针对2013中国国际太阳能十项全能竞赛比赛规则及零能耗建筑的特点,结合比赛地点山西大同的气候数据,给出了厦门大学参赛作品,零能耗小屋Sunny InSIdE的能源管理与智能监控系统设计方案。以光伏建筑一体化理论为基础,设计15.25kW光伏并网发电系统,并用相关软件对能耗平衡进行了模拟验证。以三菱PlC为核心,构建了能源管理与智能监控系统,分析了不同条件下空调、相变及遮阳系统的控制策略,并给出具体实现方法。According to the rules of the Solar Decathlon China 2013 and the characteristics of zero energy consumption house, combining with the climate data in competition city—Datong Shanxi, an energy management and intelligent monitoring system for the zero energy consumption house called Sunny Inside from Xiamen University was born.A 15.25kW photovoltaic grid connected power system was designed based on building integrated photovoltaic theory, and used relevant simulation software to test energy balance property.An energy management and intelligent monitoring system was constructed based on Mitsubishi PLC, analyzed the control strategy of heating ventilation and air conditioning, phase-change material and shading system under different conditions, and gave a concrete realization method

TWO NEW SPECIES of THE GENUS NUBIELLA FROM THE SOUTH CHINA SEA(FILIFERA,BOUGAINVILLIDAE)

记述了采自南海花水母亚纲AnTHOMEduSAE HAECkEl,1879、丝螅水母目fIlIfErA küHn,1913、高手水母科bOugAIn VIllIdAE lüTkEn,1850、单肢水母属nubIEllA bOuIllOn,19802新种,即球形单肢水母n. glObOSA lIn,Xu ET HuAng,SP.nOV.和球腺单肢水母n. glObOgOnA WAng,guO ET XuE,SP.nOV.,对新种特征进行了绘图和描述。模式标本保存于国家海洋局第三海洋研究所。Samples of Nubiella were collected from the South China Sea(4°-18° 30' N,109°-119° E) during Aug.2011.T wo new species of Nubiella i.e.N.globosa Lin,Xu et Huang,sp.nov.and N.globogona W ang,Guo et Xue,sp.nov.are described.All type specimens are deposited in the T hird Institute of Oceanography,SOA.T he specific diagnoses of two new species are as follow.Nubiella globosa Lin,Xu et Huang,sp.nov.(Figs 1-2) Umbrella global-shaped,without apical projection,exumbrella without scattered cnidocysts;without gastric peduncle and oral tube;gonads on interradial region of manubrium;with 4 unbranched oral tentacles;4 radial canals thin;4 tentacular bulbs global-shaped,without dense masses;4 marginal tentacles rather short with ring cnidocysts.Nubiella globogona Wang,Guo et Xue,sp.nov.(Figs 3-4) Umbrella bell-shaped,without apical projection,exumbrella with scattered cnidocysts;manubrium cylindrical-shaped,with apical chamber;mouth simple,circular;with 12 unbranched oral tentacles;gonads globular-shaped on media interradial region of manubrium;4 marginal tentacles,tentacular bulbs with black pigments.我国近海海洋综合调查与评价(908专项);“中国海洋生物种类名录和图谱”(908-ZC-Ⅱ-02);“908专项海洋生物样品库”和“全球变化与海气相互作用专项”资助---

关于水泥厂节能供水的控制系统设计

本文设计了水泥厂节能供水系统的控制系统,包括系统方案设计、硬件组成和软件设计,通过PlC控制变频器来实现节能供水,通过触摸屏了解系统的工作情况,设定相关参数,界面美观实用,操作灵活方便

A Monitoring System for Polysilicon Solidification Production Line Based on KingView

给出了基于组态王6.53组态软件的多晶硅定向凝固生产线监控系统的设计及实现.开发了一个界面直观、功能较全面的监控系统,实现了对多晶硅凝固生产线的手动/自动控制,包括数据的采集和分析,控制参数的自整定,故障的报警和处理等功能,为提高产品质量提供了关键的数据和图表分析.该监控系统的设计综合使用了组态软件、数据库技术及Vb程序设计语言,设计出的系统人机界面友好,操作简单方便,已成功应用于生产实践中.This paper gives a method to design a monitoring system for polysilicon directional solidification based on KingView 6.53,and its implement.A monitoring system with intuitive interface and full-featured has been developed.This system can realize manual/automatic control of polysilicon solidification,including data collection and analysis,control parameters auto-tuning,failure alarm and alarm handling,etc.It provides the crucial date and graph analysis for improving product quality.This design of the monitoring system synthesizes the application of the configuration software,database technology and VB program language.It designed human-computer interface is amicable,operation is simple and convenient.This system has already applied to the factory production,effect successfully fine.厦门市科技计划重大项目(3502Z20081051

珠江三角洲城镇用地扩展的城市化背景研究

在分析珠江三角洲1990～2000年的城镇用地扩展现状的基础上,论文采用城镇用地的综合扩展系数将珠江三角洲划分为强扩展型、弱扩展型和相对稳定型3种变化类型。同时,根据城市化发展阶段的划分和城市化与城镇用地扩展耦合系数的研究,揭示了城镇用地扩展强度与城市化发展水平的关系。最后,进一步从城市化发展的空间格局入手,分析了城镇用地扩展的特征。研究表明,1990～2000年珠江三角洲城镇用地的扩展与城市化的发展水平和空间发展格局直接相关。城镇用地的强扩展区除集中在以广州、深圳和珠海为顶点的三角区域内和重要交通轴线两侧外,还表现出以广州、深圳和珠海为核心,向周边地区扩展强度与数量递减的规律

一种可降低自驱动Leidenfrost液滴临界温度的复合膜及其制备方法

本发明公开了一种可降低自驱动Leidenfrost液滴临界温度的复合膜及其制备方法。采用线切割工艺在基底材料上切割形成锯齿形波纹化表面，然后利用磁控溅射技术在基底波纹化表面上溅射构建铝结构层，最后使用线性离子束混合磁控磁控溅射技术在铝结构层上制得含有金属过渡层的复合膜，所得复合膜表面可明显降低热表面上液滴自驱运动的Leidenfrost临界激发温度，因而可用于各种精密热控器件内表面，特别是要求在较低温度区间激发液滴自驱运动的场合，包括但不限于功能微流体、芯片分析、芯片合成实验室的流体运动温控表面修饰