本文選題：開關(guān)變壓器并用 + 電機(jī)��； 參考：《西華大學(xué)》2015年碩士論文

【摘要】：電機(jī)在直接起動(dòng)過程中,起動(dòng)電流是額定電流的數(shù)倍,可達(dá)7倍之多,起動(dòng)轉(zhuǎn)矩也會(huì)增加一倍多,而在現(xiàn)代工業(yè)中,大電機(jī)的應(yīng)用越來越廣泛,尤其是高壓大功率電機(jī)的應(yīng)用,其電壓可高達(dá)10kV,因此在直接起動(dòng)時(shí)會(huì)產(chǎn)生的大電流和強(qiáng)轉(zhuǎn)矩會(huì)危及到設(shè)備的安全,因此在電機(jī)起動(dòng)時(shí)要考慮采取軟起動(dòng)方法。比較流行的軟起動(dòng)方式有變頻軟起及晶閘管閥組,新興的開關(guān)變壓器式電機(jī)軟起動(dòng)能夠有效抑制起動(dòng)電流與起動(dòng)轉(zhuǎn)矩,提高起動(dòng)性能,同時(shí)也避免了開關(guān)器件串聯(lián)時(shí)的不穩(wěn)定性。本文立足電機(jī)的軟起動(dòng)問題,對開關(guān)變壓器并用技術(shù)進(jìn)行了深入的研究。首先,闡述了開關(guān)變壓器技術(shù)的工作原理,并對工作過程中的各種特性進(jìn)行了詳盡的分析,其中勵(lì)磁涌流的機(jī)理及其對電機(jī)起動(dòng)所產(chǎn)生的影響是分析的重點(diǎn),同時(shí)給出了變壓器的容量計(jì)算原則。其次,研究了開關(guān)變壓器式的高壓電機(jī)軟起動(dòng)的原理,提出了開關(guān)變壓器并用技術(shù),建立基于開關(guān)變壓器軟起動(dòng)系統(tǒng)的數(shù)學(xué)模型,通過仿真分析驗(yàn)證了開關(guān)變壓器并用技術(shù)的可行性。針對上述相控交流調(diào)壓存在的問題,設(shè)計(jì)了開關(guān)變壓器并用模塊,這種并用式高壓電機(jī)軟起動(dòng)裝置是一種由多個(gè)變壓器與晶閘管組合的開關(guān)變壓器模塊構(gòu)成的大功率交流調(diào)壓裝置,主要應(yīng)用于大功率高壓電動(dòng)機(jī)的軟起動(dòng)領(lǐng)域,運(yùn)用開關(guān)變壓器模塊并用技術(shù),可以對任意大容量的電動(dòng)機(jī)實(shí)施軟起動(dòng),這一技術(shù)使該裝置成為一種性能優(yōu)異、可靠性非常高的軟起動(dòng)設(shè)備。在本研究中,系統(tǒng)地探索了基于開關(guān)變壓器并用技術(shù)大功率電機(jī)軟起動(dòng)問題,并結(jié)合研究成果設(shè)計(jì)了一款工業(yè)樣機(jī)。設(shè)計(jì)并實(shí)施了相關(guān)的實(shí)驗(yàn),實(shí)驗(yàn)結(jié)果表明,開關(guān)變壓器并用技術(shù)可有效地提高開關(guān)變壓器的起動(dòng)容量,在大功率電動(dòng)機(jī)的起動(dòng)過程中,原本威脅系統(tǒng)安全運(yùn)行的各種沖擊得到了有效的抑制。提升了系統(tǒng)的穩(wěn)定性和可靠性。最后利用MATLAB軟件開發(fā)出一款仿真軟件,該軟件在基于開關(guān)變壓器的電機(jī)軟起動(dòng)技術(shù)的仿真計(jì)算中表現(xiàn)良好,該軟件實(shí)現(xiàn)了電動(dòng)機(jī)在軟起動(dòng)時(shí)的一些電氣參數(shù)的估算,如:起動(dòng)時(shí)間、起動(dòng)電流、電壓波動(dòng)率及發(fā)熱量等。
[Abstract]:In the direct starting process, the starting current is several times of the rated current, which can be as many as 7 times, and the starting torque will increase by more than twice. However, in modern industry, the application of large motor is more and more extensive, especially the application of high-voltage and high-power motor. The voltage can be as high as 10kV, so the high current and strong torque produced when starting directly will endanger the safety of the equipment. Therefore, the soft starting method should be considered when the motor starts. The popular soft starting methods are frequency conversion soft start and thyristor valve group. The new switch transformer motor soft start can effectively restrain the starting current and start torque and improve the starting performance. At the same time, the instability of switching devices in series is avoided. Based on the soft starting problem of the motor, this paper makes a deep research on the technology of switching transformer. First of all, the working principle of switching transformer technology is expounded, and various characteristics in the working process are analyzed in detail, among which the mechanism of inrush current and its influence on motor starting are the key points of the analysis. At the same time, the calculation principle of transformer capacity is given. Secondly, the principle of soft start of high voltage motor based on switch transformer is studied, and the mathematical model of soft start system based on switch transformer is established by using the technology of switch transformer. The feasibility of using switch transformer is verified by simulation analysis. Aiming at the problems of the phase-controlled AC voltage regulation, the switch transformer and the module are designed. This kind of soft starting device of high voltage motor is a kind of high power AC voltage regulator composed of several transformers and thyristors, which is mainly used in the field of soft starting of high power high voltage motors. By using switch transformer module and technology, the soft start of any motor with large capacity can be carried out, which makes the device a kind of soft starting equipment with excellent performance and high reliability. In this study, the soft-start problem of high-power motor based on switch transformer and technology is systematically explored, and an industrial prototype is designed based on the research results. Related experiments are designed and implemented. The experimental results show that the starting capacity of the switch transformer can be improved effectively by using the technology, which can be used in the starting process of the high-power motor. All kinds of shocks that threaten the security of the system are effectively suppressed. The stability and reliability of the system are improved. Finally, a simulation software is developed by using MATLAB software. The software performs well in the simulation calculation of motor soft start technology based on switch transformer. The software realizes the estimation of some electrical parameters of motor in soft start. For example: starting time, starting current, voltage fluctuation and calorific value.
【學(xué)位授予單位】：西華大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2015
【分類號】：TM41

【相似文獻(xiàn)】

相關(guān)期刊論文 前10條

1 李京民，王柏盛;開關(guān)電源中開關(guān)變壓器的設(shè)計(jì)[J];河北煤炭建筑工程學(xué)院學(xué)報(bào);1995年02期

2 徐美華;開關(guān)變壓器的研制[J];南京建筑工程學(xué)院學(xué)報(bào);1999年03期

3 丁德瑞;低造型折迭繞組開關(guān)變壓器和阻流圈研制成功[J];現(xiàn)代雷達(dá);2001年02期

4 曹豐文,李冬黎,何湘寧,劉振來;小功率反激式開關(guān)變壓器的設(shè)計(jì)與制作[J];電工技術(shù)雜志;2002年05期

5 楊彥章 ,胡平林,余韜,漆蘭芬;開關(guān)變壓器的電磁兼容仿真分析方法[J];安全與電磁兼容;2005年02期

6 喬理峰;顧偉;褚建新;;基于開關(guān)變壓器的中壓電動(dòng)機(jī)軟起動(dòng)器的研究[J];電氣傳動(dòng);2007年04期

7 ;新品展示[J];電源技術(shù)應(yīng)用;2005年08期

8 李忠臣,安繼民,陳民,潘政剛;基于開關(guān)變壓器技術(shù)的中壓(3～10kV)電動(dòng)機(jī)軟啟動(dòng)裝置[J];電氣傳動(dòng);2003年01期

9 黃產(chǎn)法;汪榮順;;單端反激變換器中開關(guān)變壓器設(shè)計(jì)[J];現(xiàn)代雷達(dá);1984年Z1期

10 向衛(wèi)鋒;;M11機(jī)心開關(guān)變壓器不能互換[J];家電檢修技術(shù);2004年12期

相關(guān)會(huì)議論文 前2條

1 馮卓利;潘政剛;孫向瑞;;開關(guān)變壓器技術(shù)在水輪發(fā)電機(jī)自同期并列上的應(yīng)用[A];2011中國電工技術(shù)學(xué)會(huì)學(xué)術(shù)年會(huì)論文集[C];2011年

2 余龍海;翁利明;胡德洪;;開關(guān)變壓器軟起動(dòng)技術(shù)分析[A];湖北省電工技術(shù)學(xué)會(huì)、武漢電工技術(shù)學(xué)會(huì)2008年學(xué)術(shù)年會(huì)暨理事會(huì)換屆大會(huì)論文集[C];2008年

相關(guān)重要報(bào)紙文章 前10條

1 山東 趙清東;熊貓2118彩電開關(guān)變壓器繞制數(shù)據(jù)[N];電子報(bào);2003年

2 江蘇 巫建榮;少見的開關(guān)變壓器不明“引腳”[N];電子報(bào);2005年

3 云南 王德朝;2006電源模塊剖析及在開關(guān)電源維修中的應(yīng)用(2)[N];電子報(bào);2012年

4 江西 尹石蓀;多組輸出電壓的開關(guān)變壓器電路分析[N];電子報(bào);2004年

5 湖北 張順均;通達(dá)TSR2030衛(wèi)星接收機(jī)常見故障檢修三例[N];電子報(bào);2003年

6 ;航嘉寬幅王[N];中國電腦教育報(bào);2004年

7 山東 車法高;海信KFR-26GW/77ZBP型變頻空調(diào)電路分析[N];電子報(bào);2006年

8 河南 許文華;TCL電磁灶維修實(shí)例[N];電子報(bào);2006年

9 貴州 顧榮杰;“村村通”專用DSD660衛(wèi)星電視解碼器電源原理及維修[N];電子報(bào);2001年

10 ;佳能BJ-330型打印機(jī)電源原理[N];電子報(bào);2004年

相關(guān)碩士學(xué)位論文 前5條

1 許波;開關(guān)變壓器并用式軟起動(dòng)系統(tǒng)研究[D];西華大學(xué);2015年

2 王樂三;基于開關(guān)變壓器的軟起動(dòng)技術(shù)研究[D];哈爾濱工業(yè)大學(xué);2014年

3 張大釗;基于開關(guān)變壓器式的電機(jī)軟起動(dòng)器研究[D];西安科技大學(xué);2010年

4 劉炳正;具有動(dòng)態(tài)電壓恢復(fù)和諧波抑制功能的開關(guān)變壓器研究[D];三峽大學(xué);2012年

5 喬理峰;基于開關(guān)變壓器的中壓異步電動(dòng)機(jī)軟起動(dòng)器的研究[D];上海海事大學(xué);2006年

，

本文編號：1845425