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單相電容運(yùn)轉(zhuǎn)異步電動(dòng)機(jī)畢業(yè)論文(留存版)

  

【正文】 鐵芯也是用硅鋼片疊壓而成,鐵芯槽內(nèi)放置兩套繞組,如圖21所示,一套是主繞組(也稱運(yùn)行或工作繞組),另一套是輔助繞組(俗稱輔繞組、副繞組或啟動(dòng)繞組)。目前常用的啟動(dòng)裝置有以下3種:① 離心開(kāi)關(guān)。8—?jiǎng)佑|點(diǎn)。PTC啟動(dòng)繼電器的優(yōu)點(diǎn)是,無(wú)觸點(diǎn)、無(wú)電弧,工作過(guò)程安全、可靠、安裝方便,價(jià)格便宜。電容的額定電壓應(yīng)大于電容端電壓Uc(Uc=U,其中U為主繞組電壓,K為輔助繞組對(duì)主繞組的有效匝數(shù)比),一般可選取電容額定電壓為2~。一般輔助繞組中的電流超前,與主繞組中的電流形成一個(gè)兩相電流系統(tǒng),這樣電動(dòng)機(jī)啟動(dòng)時(shí)就產(chǎn)生了旋轉(zhuǎn)磁場(chǎng),從而產(chǎn)生了轉(zhuǎn)動(dòng)轉(zhuǎn)矩。如果容量取大些,則啟動(dòng)轉(zhuǎn)矩大,運(yùn)行性能下降。 W V Hz。副繞組也為正妶繞組,則繞阻跨距為 根據(jù)跨距16,可知道跨距為158 與主繞組的情況相同,如果每槽導(dǎo)體數(shù)與對(duì)應(yīng)不一致,應(yīng)重新計(jì)算基波繞組系數(shù)。 mm2,軛部體積mm2根據(jù)上述計(jì)算出的4個(gè)數(shù)據(jù),按所采用的DR510牌號(hào)硅鋼片的損耗曲線(見(jiàn)附錄),查出相對(duì)應(yīng)的單位鐵耗。 。否則必須返回重新計(jì)算第114135項(xiàng)的計(jì)算,直至計(jì)算值與假定值滿足要求為止。 對(duì)于轉(zhuǎn)子鼠籠繞組的設(shè)計(jì) ,首先考慮的是槽配合的問(wèn)題。 參考文獻(xiàn)[1] 電機(jī)工程手冊(cè)(單相電機(jī)部分).1971:[2」,45~56.[3] ,67~98.[4] ,1993:36~98.[5] ,1999:243~257.[6] ,2006:347~376.[7] 中小型電機(jī),1981:67~98.[8」胡虔生,,2005:76~94.[9] ,2007:28~58.[10] ,1988:57~96.[11] Alwash J H, Ikwan S performance of a threephase induction motor connected to a single phase supplies[J], IEE Power, 1996, 143(4): 339~344.[12] Kazmierkowski M P, Daienoakow M A, Sulkowski W. Novel Space Vector Based Current Controllers for PWM Inverters. IEEE Trans, PE, 1991:276~289.附錄A英文參考文獻(xiàn)Technology development and application of singlephase asynchronous motorAs everyone knows, the operating characteristics of singlephase asynchronous motor asymmetry, the theoretical analysis, design and calculation are far better than GA plex threephase asynchronous motor. Even for the most simple singlephase capacitor motor with double construction group, operating characteristics depend on the manual accounting and its plete is difficult, not to mention the connection of other plex. So, although the tapped control singlephase capacitor motor products before has been popular in the United states. However, analysis and calculation has been reported about the quantitative. Until the 7039。直到70年代,才最初由Cyrl G .V einott在采用計(jì)算條件下得以完成。單機(jī)容量也高達(dá)100馬力。由此可見(jiàn),隨著科學(xué)技術(shù)的發(fā)展,將推動(dòng)各種新型單相異步電動(dòng)機(jī)研制,其品種將越來(lái)越多,應(yīng)用也將越來(lái)越廣泛。結(jié)果大大提高了單相異步發(fā)電動(dòng)機(jī)運(yùn)行性能,為其應(yīng)用鋪平道路。s argument, except in the motor starting principle with MI plan consists of divination, the steady operation theory and singlephase asynchronous motor Peng 81. Because of the motor stator is slotless structure, motor manufacturing diameter smaller more easily. According to the introduction, if the production and electronic tuner to match, in the small device (such as highspeed rotation of the centrifugal separator, separator) get application etc..Therefore, with the development of science and technology, will promote the development of new types of singlephase asynchronous motor, the species will bee more and more, will be more and more extensive application.附錄B英文參考文獻(xiàn)翻譯單相異步電機(jī)的技術(shù)發(fā)展和應(yīng)用眾所周知,由于單相異步電動(dòng)機(jī)不對(duì)稱運(yùn)行特點(diǎn),使其理論分析、設(shè)計(jì)計(jì)算都遠(yuǎn)比三相異步電機(jī)嘎雜。他嚴(yán)肅的科學(xué)態(tài)度,嚴(yán)謹(jǐn)?shù)闹螌W(xué)精神,精益求精的工作作風(fēng),深深地感染和激勵(lì)著我。此種方式能夠節(jié)約用銅量 ,嵌線方便,結(jié)構(gòu)簡(jiǎn)單,能夠滿足電機(jī)的運(yùn)行性能要求。 。 槽口部分:槽部:公式中: 轉(zhuǎn)子參數(shù)計(jì)算轉(zhuǎn)子斜槽率一般以轉(zhuǎn)子斜槽尺寸與定子齒距的比值來(lái)表示,轉(zhuǎn)子斜槽尺寸如下:。 152. 最大轉(zhuǎn)矩倍數(shù)。 。否則必須返回重新計(jì)算5783項(xiàng)的計(jì)算,直至計(jì)算值與假定值接近為止。(b) 電流不變。圖33 電流型啟動(dòng)繼電器接線圖34 單相電容啟動(dòng)電動(dòng)機(jī)原理(3) 單相電容運(yùn)轉(zhuǎn)異步電動(dòng)機(jī)圖35 單相電容運(yùn)轉(zhuǎn)電動(dòng)機(jī)原理如果將電容啟動(dòng)電動(dòng)機(jī)的輔助繞組和電容都設(shè)計(jì)成能長(zhǎng)期工作的,而輔助繞組支路不串接離心開(kāi)關(guān),如圖35所示,則這種電動(dòng)機(jī)就稱為單相電容運(yùn)轉(zhuǎn)異步電動(dòng)機(jī)(單相電容異步電動(dòng)機(jī))。如圖32所示,兩個(gè)繞組接在同一個(gè)單相電源上,輔助繞組串聯(lián)一個(gè)離心開(kāi)關(guān)S。表21 單相電容啟動(dòng)異步電動(dòng)機(jī)啟動(dòng)電容選配② 運(yùn)轉(zhuǎn)電容。啟動(dòng)時(shí)室溫下PTC為低阻值,線路導(dǎo)通。4—觸點(diǎn)。鐵芯采用硅鋼片疊壓而成,鐵芯槽內(nèi)裝有籠型繞組,一般采用鑄鋁轉(zhuǎn)子。它特別適用于輕載起動(dòng)和要求長(zhǎng)期運(yùn)行的場(chǎng)合,如洗衣機(jī)、空調(diào)設(shè)備等,是產(chǎn)量最大、應(yīng)用最廣泛的一類單相感應(yīng)電動(dòng)機(jī)。因此,未來(lái)單相交流異步電機(jī)的市場(chǎng)發(fā)展前景將會(huì)非常廣闊[11]。雖然與二相異步電機(jī)相比,單相異步電機(jī)存在著效率和功率因數(shù)較低、功率不宜做大的不足,面對(duì)各類新型電機(jī)的競(jìng)爭(zhēng),但它始終在微小功率電機(jī)應(yīng)用方面保持著主導(dǎo)地位。隨后俄國(guó)的多利沃一多布羅沃利斯基于次年發(fā)明了二相交流異步電機(jī)。因此在十一五期間“開(kāi)發(fā)品種,擴(kuò)大功率,提高效率,降低躁聲”將是單相電機(jī)產(chǎn)品發(fā)展的主要趨勢(shì)。磁極的一部分被短路環(huán)罩住,凸極上裝有主繞組,一般為集中式繞組。啟動(dòng)后,當(dāng)轉(zhuǎn)速升高到額定轉(zhuǎn)速的70%~80%時(shí),由于離心力作用,指形銅觸片克服拉力彈簧作用而離開(kāi)靜止的銅環(huán),使兩個(gè)半圓形銅環(huán)間不通,即起開(kāi)關(guān)斷開(kāi)作用。14—撥桿。單相電容啟動(dòng)異步電動(dòng)機(jī)需要啟動(dòng)電容,單相電容運(yùn)轉(zhuǎn)異步電動(dòng)機(jī)需要運(yùn)轉(zhuǎn)電容,單相雙值電容異步電動(dòng)機(jī)需要兩個(gè)電容。電角度,則為兩相對(duì)稱繞組。家用電冰箱中壓縮機(jī)電動(dòng)機(jī)就采用重力式啟動(dòng)繼電器或PTC啟動(dòng)繼電器。啟動(dòng)時(shí),C1和C2兩個(gè)電容并聯(lián),總?cè)萘看螅噪妱?dòng)機(jī)有較大的啟動(dòng)轉(zhuǎn)矩: 啟動(dòng)后,當(dāng)電動(dòng)機(jī)轉(zhuǎn)速達(dá)到額定轉(zhuǎn)速的70%~80%時(shí),通過(guò)離心開(kāi)關(guān)S將電容C1切除,容量較小的C2參加運(yùn)行,因此電動(dòng)機(jī)又有較好的運(yùn)行性能。公式中 ——電勢(shì)系數(shù) 通常對(duì)于電阻和電容啟動(dòng)電動(dòng)機(jī),主相電流的估算公式為 一般根據(jù)經(jīng)驗(yàn)按類比法選取線規(guī),當(dāng)不合適時(shí),應(yīng)進(jìn)行多次選取,直至所選取的線規(guī)滿足電動(dòng)機(jī)性能及槽滿率的要求。 轉(zhuǎn)子槽形為半開(kāi)口,平底槽 。 就單相感應(yīng)步電機(jī)與三相感應(yīng)電機(jī)相比較,其最大的不同,最主要的就是不對(duì)稱,三相感應(yīng)電機(jī)是具有三相對(duì)稱繞組的電機(jī),在外加三相電源對(duì)稱條件下,現(xiàn)平行運(yùn)轉(zhuǎn),而單相感應(yīng)電機(jī)則不然,供給它的是單相電源,為了使單相感應(yīng)電機(jī)能夠具有或接近三相感應(yīng)電機(jī)的運(yùn)行性能 ,采取了種種措施,如電的,磁的,空間位置上的不對(duì)稱。(4)為了降低負(fù)載附加損耗,應(yīng)該取S2 S1,大約相差15%。 plus the node peach Li process much more simple, convenient, this type of generator is very promising.Longterm since, because of singlephase asynchronous motor is only applied in household appliances and medical devices, so the capacity is generally not more than 1 horsepower, often called fractional horsepower motors but, it does not draw such a conclusion, namely singlephase asynchronous motor or impossible to the United States of America agricultural electricity as an
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