本文選題：風(fēng)機主控系統(tǒng) + 可編程控制器��； 參考：《湘潭大學(xué)》2017年碩士論文

【摘要】：作為風(fēng)能資源利用最有效的方式,風(fēng)電已成為我國可持續(xù)發(fā)展和經(jīng)濟增長的重要組成部分�？删幊炭刂破�(PLC)作為風(fēng)力發(fā)電系統(tǒng)的核心部件,需適應(yīng)復(fù)雜的工作環(huán)境,且風(fēng)機控制系統(tǒng)對PLC的穩(wěn)定性和可靠性要求更高。在工業(yè)控制中,通常用電磁兼容性能優(yōu)良來衡量PLC系統(tǒng)的穩(wěn)定可靠性是否滿足要求。本文結(jié)合“風(fēng)機主控PLC系統(tǒng)國產(chǎn)化”項目,針對國產(chǎn)化PLC系統(tǒng)在風(fēng)機試運行階段出現(xiàn)的各種EMI干擾問題,提高國產(chǎn)化PLC系統(tǒng)的電磁兼容性能迫在眉睫。本文在電磁兼容理論分析的基礎(chǔ)上,提出了一整套針對國產(chǎn)化PLC電磁兼容問題的解決方案,并將這套方案成功的融入到國產(chǎn)化PLC設(shè)計流程中。在綜合分析現(xiàn)有電磁兼容設(shè)計技術(shù)的前提下,吸取其中有利于提高國產(chǎn)化PLC電磁兼容可靠性的設(shè)計方案,利用仿真工具對設(shè)計方案進行分析;最后,通過工程儀器對整套國產(chǎn)化PLC系統(tǒng)進行電磁兼容可靠性驗證。本文主要完成的工作有:(1)PLC電磁兼容技術(shù)研究難點與關(guān)鍵技術(shù)。結(jié)合國內(nèi)外PLC電磁兼容現(xiàn)狀,分析了PLC進行電磁兼容設(shè)計存在的問題;本文分析了風(fēng)力發(fā)電控制器機組中的干擾源和干擾信號,包括其傳播途徑和耦合方式,將干擾方式分解為弱磁場耦合和弱電場耦合,建立各自的二端口電路模型計算干擾電壓和電流。對常用的電磁兼容技術(shù)包括屏蔽、濾波、接地、隔離等技術(shù)特點進行分析,提出適合于本文的電磁兼容設(shè)計拓?fù)浣Y(jié)構(gòu);(2)電磁兼容原理圖設(shè)計和仿真實現(xiàn)。對國產(chǎn)化PLC系統(tǒng)的通信端口包括以太網(wǎng)端口、CAN端口、總線適配器端口、電源端口、數(shù)字、模擬傳感器信號端口進行電磁兼容原理圖設(shè)計。使用Altium Designer軟件對PCB板進行電磁兼容設(shè)計和仿真驗證。文中分析了兩種器件建模的優(yōu)缺點,得出IBIS模型的優(yōu)勢,并對PCB進行了信號完整性和電源完整性仿真驗證;(3)實例驗證。通過浪涌信號發(fā)生器、脈沖群信號發(fā)生器對本文所設(shè)計的電磁兼容解決方案進行驗證,使用上位機軟件顯示驗證結(jié)果,對不完善的設(shè)計分析其原理,更改設(shè)計方案,然后再次進行驗證;本文所討論的電磁兼容方案已取得3C認(rèn)證證書,應(yīng)用于郴州大沖風(fēng)電場,提高了PLC運行的安全性和可靠性,具有良好的應(yīng)用前景。
[Abstract]:As the most effective way to utilize wind energy, wind power has become an important part of sustainable development and economic growth in China.As the core component of wind power system, PLC (Programmable Logic Controller) needs to adapt to the complex working environment, and the stability and reliability of PLC are higher in the fan control system.In industrial control, EMC performance is usually used to evaluate the stability and reliability of PLC system.In this paper, according to the project of "nationalization of main control PLC system of fan", it is urgent to improve the EMC performance of home-made PLC system in view of the various EMI interference problems that occur in the trial operation stage of domestic PLC system.Based on the analysis of EMC theory, this paper puts forward a set of solutions to the domestic PLC EMC problem, and successfully integrates this scheme into the domestic PLC design process.On the premise of synthetically analyzing the existing EMC design technology and absorbing the design scheme which is helpful to improve the reliability of EMC in domestic PLC, the design scheme is analyzed by simulation tools. Finally,The electromagnetic compatibility reliability of the whole PLC system is verified by engineering instruments.The main work of this paper is to study the difficulties and key technologies of EMC technology.Combined with the current situation of PLC EMC at home and abroad, the problems in EMC design of PLC are analyzed, and the interference sources and interference signals in wind power controller unit are analyzed, including its propagation path and coupling mode.The interference mode is decomposed into weak magnetic field coupling and weak electric field coupling, and their respective two-port circuit models are established to calculate the interference voltage and current.The characteristics of electromagnetic compatibility (EMC) technology, including shielding, filtering, grounding and isolation, are analyzed, and the design and simulation of EMC schematic diagram suitable for this paper are put forward.The communication ports of home-made PLC system including Ethernet port can port bus adapter port power port digital port and analog sensor signal port are designed for EMC schematic design.Altium Designer software is used to design and verify the EMC of PCB board.This paper analyzes the advantages and disadvantages of two kinds of device modeling, obtains the advantages of IBIS model, and verifies the signal integrity and power integrity of PCB by simulation.The EMC solution designed in this paper is verified by surge signal generator and pulse group signal generator. The software of upper computer is used to display the verification result. The principle of imperfect design is analyzed and the design scheme is changed.The EMC scheme discussed in this paper has obtained 3C certification and has been applied to Chenzhou Dachong wind farm, which improves the security and reliability of PLC operation and has a good application prospect.
【學(xué)位授予單位】：湘潭大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2017
【分類號】：TP273;TN03;TM315

【參考文獻】

相關(guān)期刊論文 前10條

1 侯艷紅;;飛機電子信息系統(tǒng)電磁兼容頂層量化的仿真模型設(shè)計研究[J];自動化與儀器儀表;2016年10期

2 謝奕釗;;關(guān)于印制電路板的電磁兼容設(shè)計分析[J];電子測試;2016年14期

3 唐幸兒;梁季彝;;基于PCB板電磁兼容性設(shè)計方法的研究[J];數(shù)字技術(shù)與應(yīng)用;2016年06期

4 詹金晶;;淺析艦船電磁兼容中的接地設(shè)計方法[J];電子世界;2016年13期

5 趙娜;楊楠;陶燦;張輝;;高速DSP系統(tǒng)PCB的電磁兼容設(shè)計研究[J];彈箭與制導(dǎo)學(xué)報;2016年03期

6 陳寧;袁大天;肖妮;;民用飛機電磁兼容性試飛技術(shù)[J];電子測試;2016年11期

7 吳彪;周寧;韓朝暉;;風(fēng)電場對電磁環(huán)境的影響分析[J];能源環(huán)境保護;2016年02期

8 余華武;史志偉;;智能電子設(shè)備電磁兼容裕度設(shè)計[J];智能電網(wǎng);2016年03期

9 崔盟軍;楊華麗;李巍杭;;KMR磁致伸縮液位計的電磁兼容設(shè)計[J];中國儀器儀表;2016年01期

10 黃鵬;劉志國;祁建城;;方艙醫(yī)院系統(tǒng)中的電磁兼容設(shè)計[J];醫(yī)療衛(wèi)生裝備;2015年09期

相關(guān)博士學(xué)位論文 前1條

1 孫守紅;光電系統(tǒng)中瞬變電磁干擾的分析與防護技術(shù)研究[D];中國科學(xué)院研究生院(長春光學(xué)精密機械與物理研究所);2015年

相關(guān)碩士學(xué)位論文 前5條

1 馮志彬;復(fù)雜電磁環(huán)境下遠程監(jiān)控系統(tǒng)電磁干擾防護技術(shù)研究[D];北方工業(yè)大學(xué);2015年

2 魯瑩;高速電路PCB的信號完整性和電源完整性仿真分析[D];西安電子科技大學(xué);2015年

3 孫冉;PCB電路與結(jié)構(gòu)的EMC協(xié)同仿真技術(shù)研究[D];西安電子科技大學(xué);2014年

4 孫魯超;醫(yī)療器械的電磁兼容測試和串?dāng)_問題的研究[D];北京郵電大學(xué);2012年

5 潘其良;服務(wù)器電磁兼容性設(shè)計與試驗[D];上海交通大學(xué);2011年

，

本文編號：1752377