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id="jxzgizr" class="bigimg"><div><p class="pic"><img src="http://tyunfile.71360.com/UpLoadFile/2019/11/21/9/637099268088123819_lcdianji_7395067.jpg" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div><div id="bqsf8f3" class="smallimg"><div><p class="pic"><img src="http://tyunfile.71360.com/UpLoadFile/2019/11/21/9/637099268088123819_lcdianji_7395067.jpg" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div></div><div id="xbykzas" class="content"><p><span>需求數(shù)量：</span>0</p><p><span>價格要求：</span>面議</p><p><span>所在地：</span>山東省</p><p><span>包裝要求：</span><span style="color: #f30;"></span></p><p><span>產(chǎn)品關(guān)鍵詞：</span>山西三相同步電機(jī)型號</p><p><span>***更新：</span>2020-06-02 07:05:50</p><p><span id="click" >瀏覽次數(shù)：0次</span></p><a rel="nofollow" class="button">聯(lián)系我們</a></div></div><div id="xbyl8f4" class="rightbox"><h3>公司基本資料信息</h3><p style="border:0;"><a rel="nofollow">山東聯(lián)創(chuàng)電機(jī)有限公司</a></p><p><span>聯(lián)系人：</span>李道松</p><p><span>郵箱: </span>505920191@qq.com</p><p><span>電話: </span>13906437131</p><p><span>傳真: </span>0533_7781170</p><p><span>網(wǎng)址: </span></p><p><span>手機(jī): </span>0533-7788099</p><p><span>地址: </span>山東省淄博市臨淄區(qū)朱臺鎮(zhèn)魏家村</p><p>[當(dāng)前離線] <a rel="nofollow"> [加為商友] </a><a rel="nofollow"> [發(fā)送信件] </a></p></div></div><div id="qjli9l9" class="page-proshow02"><p class="title">詳細(xì)說明</p><div id="8srjioq" class="box"><p><p style="text-indent:25px">所謂三相異步電動機(jī)的啟動是指電動機(jī)從接入電源開始轉(zhuǎn)動起，到達(dá)到額定轉(zhuǎn)速為止的這一過程。根據(jù)理論分析和實際測定，三相異步電動機(jī)啟動瞬間；定子繞組啟動電流很大，可達(dá)額定值的4~7倍。三相異步電動機(jī)為什么會有這么大的啟動電流呢？因為異步電動機(jī)在啟動瞬間轉(zhuǎn)子并不能立馬就轉(zhuǎn)動起來，此時轉(zhuǎn)子電磁感應(yīng)的反電勢尚未建立起來，所以外電壓全部加在沒有反電勢的定子繞組上，其電路電流就是外電壓除以繞組的阻抗（用符號Z表示，是一種對電流其阻礙作用的能力，單位為歐姆公式Z=V/I表示），所以定子繞組電流很大。這么大的啟動電流將帶來以下不良后果：使電網(wǎng)電壓產(chǎn)生波動（特別是容量較大的電動機(jī)啟動時），從而影響到接在電網(wǎng)上的其它設(shè)備的正常運(yùn)行。使電動機(jī)繞組發(fā)熱，絕緣老化，山西三相同步電機(jī)型號，山西三相同步電機(jī)型號，從而縮短了電動機(jī)的使用壽命。特別是對經(jīng)常需要啟動的電動機(jī)影響較大。啟動瞬間，由于三相異步電動機(jī)轉(zhuǎn)子電路功率因素較低，啟動轉(zhuǎn)矩并不很大。如果啟動轉(zhuǎn)矩小于負(fù)載轉(zhuǎn)矩則電動機(jī)將無法啟動。綜上所述，三相異步電動機(jī)啟動時的主要缺點是啟動電流較大，山西三相同步電機(jī)型號。為了減小啟動電流，必須采用適當(dāng)?shù)膯臃椒ā?/p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="山西三相同步電機(jī)型號" src="http://tyunfile.71360.com/UpLoadFile/2019/11/21/9/637099268088123819_lcdianji_7395067.jpg"></div><p style="text-indent:25px">用三相交流電驅(qū)動的交流電動機(jī)。三相電動機(jī)它是指當(dāng)電機(jī)的三相定子繞組（各相差120度電角度），通入三相交流電后，將產(chǎn)生一個旋轉(zhuǎn)磁場，該旋轉(zhuǎn)磁場切割轉(zhuǎn)子繞組來發(fā)電。它包括三相同步電動機(jī)與三相異步電動機(jī)。三相電動機(jī)是指當(dāng)電動機(jī)的三相定子繞組（各相差120度電角度），通入三相交流電后，將產(chǎn)生一個旋轉(zhuǎn)磁場，該旋轉(zhuǎn)磁場切割轉(zhuǎn)子繞組，從而在轉(zhuǎn)子繞組中產(chǎn)生感應(yīng)電流（轉(zhuǎn)子繞組是閉合通路），載流的轉(zhuǎn)子導(dǎo)體在定子旋轉(zhuǎn)磁場作用下將產(chǎn)生電磁力，從而在電機(jī)轉(zhuǎn)軸上形成電磁轉(zhuǎn)矩，驅(qū)動電動機(jī)旋轉(zhuǎn)，并且電機(jī)旋轉(zhuǎn)方向與旋轉(zhuǎn)磁場方向相同。<span style="display:none;"></span></p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="山西三相同步電機(jī)型號" src="http://tyunfile.71360.com/UpLoadFile/2019/11/21/9/637099268047122898_lcdianji_6404739.jpg"></div><p> 三相異步電機(jī)（Triple-phaseasynchronousmotor）是感應(yīng)電動機(jī)的一種，是靠同時接入380V三相交流電流（相位差120度）供電的一類電動機(jī)，由于三相異步電動機(jī)的轉(zhuǎn)子與定子旋轉(zhuǎn)磁場以相同的方向、不同的轉(zhuǎn)速成旋轉(zhuǎn)，存在轉(zhuǎn)差率，所以叫三相異步電動機(jī)。三相異步電動機(jī)轉(zhuǎn)子的轉(zhuǎn)速低于旋轉(zhuǎn)磁場的轉(zhuǎn)速，轉(zhuǎn)子繞組因與磁場間存在著相對運(yùn)動而產(chǎn)生電動勢和電流，并與磁場相互作用產(chǎn)生電磁轉(zhuǎn)矩，實現(xiàn)能量變換。與單相異步電動機(jī)相比，三相異步電動機(jī)運(yùn)行性能好，并可節(jié)省各種材料。按轉(zhuǎn)子結(jié)構(gòu)的不同，三相異步電動機(jī)可分為籠式和繞線式兩種?；\式轉(zhuǎn)子的異步電動機(jī)結(jié)構(gòu)簡單、運(yùn)行可靠、重量輕、價格便宜，得到了普遍的應(yīng)用，其主要缺點是調(diào)速困難。繞線式三相異步電動機(jī)的轉(zhuǎn)子和定子一樣也設(shè)置了三相繞組并通過滑環(huán)、電刷與外部變阻器連接。調(diào)節(jié)變阻器電阻可以改善電動機(jī)的起動性能和調(diào)節(jié)電動機(jī)的轉(zhuǎn)速。 </p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="山西三相同步電機(jī)型號" src="http://tyunfile.71360.com/UpLoadFile/2019/11/21/9/637099268039953338_lcdianji_4365344.jpg"></div></p><br /><p>文章來源地址: http://www.cdcfah.com/cp/115206.html</p></div></div></div></div></div><div id="8lspzln" class="page-right 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