變(bian)(bian)頻(pin)(pin)(pin)器是(shi)應(ying)(ying)用(yong)(yong)(yong)(yong)變(bian)(bian)頻(pin)(pin)(pin)技(ji)術(shu)以及微電(dian)(dian)(dian)(dian)子技(ji)術(shu)，通過改變(bian)(bian)電(dian)(dian)(dian)(dian)機(ji)工作(zuo)(zuo)電(dian)(dian)(dian)(dian)源頻(pin)(pin)(pin)率(lv)方(fang)式來(lai)控(kong)制交流電(dian)(dian)(dian)(dian)動機(ji)的(de)電(dian)(dian)(dian)(dian)力(li)(li)控(kong)制設備。在(zai)具體(ti)(ti)的(de)應(ying)(ying)用(yong)(yong)(yong)(yong)中變(bian)(bian)頻(pin)(pin)(pin)器起著重要(yao)的(de)作(zuo)(zuo)用(yong)(yong)(yong)(yong)，那么具體(ti)(ti)變(bian)(bian)頻(pin)(pin)(pin)器的(de)作(zuo)(zuo)用(yong)(yong)(yong)(yong)主(zhu)要(yao)有哪些呢？本文就給大(da)(da)家具體(ti)(ti)介紹(shao)下。變(bian)(bian)頻(pin)(pin)(pin)器的(de)節(jie)(jie)能(neng)作(zuo)(zuo)用(yong)(yong)(yong)(yong)變(bian)(bian)頻(pin)(pin)(pin)器比較大(da)(da)的(de)一個優點就是(shi)節(jie)(jie)能(neng)，明(ming)顯(xian)的(de)行(xing)(xing)業就是(shi)風(feng)機(ji)水(shui)泵行(xing)(xing)業的(de)應(ying)(ying)用(yong)(yong)(yong)(yong)。因風(feng)機(ji)水(shui)泵的(de)消(xiao)耗功率(lv)與轉(zhuan)速(su)(su)(su)的(de)立方(fang)成正(zheng)比，所以當外界用(yong)(yong)(yong)(yong)風(feng)/水(shui)量(liang)不高(gao)時(shi)，使(shi)用(yong)(yong)(yong)(yong)變(bian)(bian)頻(pin)(pin)(pin)將轉(zhuan)速(su)(su)(su)降(jiang)低則(ze)節(jie)(jie)能(neng)效果明(ming)顯(xian)。其他(ta)行(xing)(xing)業的(de)節(jie)(jie)能(neng)原理大(da)(da)概(gai)如此，均是(shi)通過在(zai)不需要(yao)全速(su)(su)(su)運行(xing)(xing)時(shi)調低電(dian)(dian)(dian)(dian)機(ji)轉(zhuan)速(su)(su)(su)來(lai)實現節(jie)(jie)能(neng)。變(bian)(bian)頻(pin)(pin)(pin)器的(de)軟啟(qi)動作(zuo)(zuo)用(yong)(yong)(yong)(yong)當電(dian)(dian)(dian)(dian)機(ji)通過工頻(pin)(pin)(pin)直接氣啟(qi)動的(de)時(shi)候，會產(chan)生7到8倍的(de)電(dian)(dian)(dian)(dian)機(ji)額定電(dian)(dian)(dian)(dian)流，電(dian)(dian)(dian)(dian)流的(de)加大(da)(da)增加了電(dian)(dian)(dian)(dian)機(ji)繞組的(de)電(dian)(dian)(dian)(dian)應(ying)(ying)力(li)(li)并(bing)且產(chan)生了熱(re)量(liang)，從(cong)而降(jiang)低了變(bian)(bian)頻(pin)(pin)(pin)器的(de)使(shi)用(yong)(yong)(yong)(yong)壽命。而變(bian)(bian)頻(pin)(pin)(pin)調速(su)(su)(su)則(ze)可以在(zai)零速(su)(su)(su)零電(dian)(dian)(dian)(dian)壓啟(qi)動（也(ye)可適(shi)當加轉(zhuan)矩提升）。維凱(kai)美迪（上海）高(gao)新(xin)技(ji)術(shu)有限公司主(zhu)營各類(lei)歐美進口(kou)繼電(dian)(dian)(dian)(dian)器，寶德Burker，阿(a)托斯Atos等，歡迎來(lai)電(dian)(dian)(dian)(dian)咨詢。原裝進口(kou)直接式變(bian)(bian)頻(pin)(pin)(pin)器用(yong)(yong)(yong)(yong)途

大(da)(da)型窯爐(lu)煅燒(shao)爐(lu)類(lei)(lei)負(fu)(fu)載冶(ye)金、建材、燒(shao)堿等(deng)大(da)(da)型工(gong)業(ye)(ye)轉窯（轉爐(lu)）以前大(da)(da)部(bu)分(fen)采(cai)用(yong)直(zhi)(zhi)流、整流子電(dian)(dian)機(ji)(ji)(ji)、滑差電(dian)(dian)機(ji)(ji)(ji)、串級(ji)調速(su)或(huo)中頻機(ji)(ji)(ji)組調速(su)。由(you)于這些調速(su)方式(shi)或(huo)有(you)滑環或(huo)效率低，近年來，不(bu)少單位采(cai)用(yong)變頻控制(zhi)，效果極好(hao)。4、壓(ya)(ya)縮機(ji)(ji)(ji)類(lei)(lei)負(fu)(fu)載壓(ya)(ya)縮機(ji)(ji)(ji)也屬于應(ying)(ying)用(yong)類(lei)(lei)負(fu)(fu)載。低壓(ya)(ya)的壓(ya)(ya)縮機(ji)(ji)(ji)在各工(gong)業(ye)(ye)部(bu)門都(dou)普遍(bian)應(ying)(ying)用(yong)，高(gao)壓(ya)(ya)大(da)(da)容(rong)量壓(ya)(ya)縮機(ji)(ji)(ji)在鋼(gang)鐵（如制(zhi)氧機(ji)(ji)(ji)）、礦山(shan)、化肥、乙烯都(dou)有(you)較多應(ying)(ying)用(yong)。采(cai)用(yong)變頻調速(su)，均帶來啟動電(dian)(dian)流小、節(jie)電(dian)(dian)、優(you)化設(she)備使用(yong)壽命等(deng)優(you)點。原裝進(jin)(jin)口直(zhi)(zhi)接式(shi)變頻器用(yong)途維凱美迪（上(shang)海）高(gao)新技術有(you)限公(gong)司主(zhu)營(ying)各類(lei)(lei)歐美進(jin)(jin)口繼電(dian)(dian)器，美國mac，德國epro等(deng)，請(qing)來電(dian)(dian)和我們咨詢(xun)。

正(zheng)弦脈(mo)寬調制(zhi)(SPWM)控(kong)(kong)(kong)(kong)制(zhi)方(fang)式其(qi)特點是控(kong)(kong)(kong)(kong)制(zhi)電(dian)路結構簡單、成本較(jiao)低(di)(di)，機(ji)(ji)械特性(xing)硬度也較(jiao)好，能(neng)夠(gou)滿足一般傳動(dong)的(de)(de)平(ping)滑調速(su)要求，已(yi)在(zai)產業的(de)(de)各個領域得到廣泛應(ying)用。但是，這(zhe)種控(kong)(kong)(kong)(kong)制(zhi)方(fang)式在(zai)低(di)(di)頻時，由于輸(shu)出電(dian)壓較(jiao)低(di)(di)，轉(zhuan)(zhuan)矩(ju)受定(ding)子電(dian)阻壓降的(de)(de)影響比較(jiao)，使輸(shu)出最大轉(zhuan)(zhuan)矩(ju)減小。另外，其(qi)機(ji)(ji)械特性(xing)終究沒有直流電(dian)動(dong)機(ji)(ji)硬，動(dong)態轉(zhuan)(zhuan)矩(ju)能(neng)力和靜態調速(su)性(xing)能(neng)都還不(bu)(bu)盡如人意，且(qie)系(xi)統性(xing)能(neng)不(bu)(bu)高、控(kong)(kong)(kong)(kong)制(zhi)曲(qu)線會(hui)隨負(fu)載的(de)(de)變(bian)化而變(bian)化，轉(zhuan)(zhuan)矩(ju)響應(ying)慢、電(dian)機(ji)(ji)轉(zhuan)(zhuan)矩(ju)利用率不(bu)(bu)高，低(di)(di)速(su)時因定(ding)子電(dian)阻和逆變(bian)器死區效應(ying)的(de)(de)存(cun)在(zai)而性(xing)能(neng)下降，穩(wen)定(ding)性(xing)變(bian)差等。因此人們(men)又研究出矢量控(kong)(kong)(kong)(kong)制(zhi)變(bian)頻調速(su)。

變(bian)(bian)頻器（Variable-frequency Drive，VFD）是(shi)應用變(bian)(bian)頻技(ji)(ji)術(shu)與微(wei)(wei)電(dian)(dian)子技(ji)(ji)術(shu)，通(tong)過改變(bian)(bian)電(dian)(dian)機(ji)工作電(dian)(dian)源(yuan)(yuan)頻率方式來控制交流(liu)(liu)電(dian)(dian)動(dong)機(ji)的(de)(de)(de)電(dian)(dian)力控制設備(bei)。 變(bian)(bian)頻器主(zhu)要(yao)由(you)整(zheng)流(liu)(liu)（交流(liu)(liu)變(bian)(bian)直流(liu)(liu)）、濾波、逆變(bian)(bian)（直流(liu)(liu)變(bian)(bian)交流(liu)(liu)）、制動(dong)單(dan)元、驅動(dong)單(dan)元、檢測單(dan)元微(wei)(wei)處(chu)理(li)單(dan)元等組(zu)成。變(bian)(bian)頻器靠內部(bu)IGBT的(de)(de)(de)開斷(duan)來調整(zheng)輸(shu)出(chu)電(dian)(dian)源(yuan)(yuan)的(de)(de)(de)電(dian)(dian)壓和頻率，根據電(dian)(dian)機(ji)的(de)(de)(de)實際需要(yao)來提供其所(suo)需要(yao)的(de)(de)(de)電(dian)(dian)源(yuan)(yuan)電(dian)(dian)壓，進(jin)而達到(dao)節能(neng)、調速的(de)(de)(de)目(mu)的(de)(de)(de)，另(ling)外，變(bian)(bian)頻器還(huan)有很多的(de)(de)(de)保護功(gong)能(neng)，如(ru)過流(liu)(liu)、過壓、過載保護等等。隨(sui)著工業自動(dong)化程度(du)的(de)(de)(de)不斷(duan)提高，變(bian)(bian)頻器也(ye)得到(dao)了非常(chang)的(de)(de)(de)應用。維(wei)凱美迪(di)（上海）高新技(ji)(ji)術(shu)有限(xian)公司主(zhu)營各(ge)類歐美進(jin)口繼電(dian)(dian)器，力士樂，德國賀德克等，歡(huan)迎來電(dian)(dian)咨詢。

拉絲機類負載(zai)生(sheng)產(chan)(chan)鋼(gang)絲的(de)拉絲機，要(yao)求(qiu)高(gao)速(su)、連續化生(sheng)產(chan)(chan)。鋼(gang)絲強度(du)(du)為(wei)200Kg/mm2，調(diao)速(su)系(xi)統要(yao)求(qiu)精度(du)(du)高(gao)、穩定(ding)度(du)(du)高(gao)且要(yao)求(qiu)同步。運(yun)送車(che)類負載(zai)煤(mei)礦的(de)原煤(mei)裝運(yun)車(che)或鋼(gang)廠的(de)鋼(gang)水(shui)運(yun)送車(che)等(deng)(deng)采(cai)用(yong)變(bian)(bian)頻(pin)(pin)(pin)技(ji)術效(xiao)果很好。起停快速(su)，過載(zai)能力強，正(zheng)反(fan)轉靈活，達(da)到煤(mei)面平(ping)整、重量正(zheng)確(que)（不多(duo)裝或少裝），基本上不需要(yao)人工(gong)(gong)操作，提(ti)高(gao)了原煤(mei)生(sheng)產(chan)(chan)效(xiao)率，節約了電能。電梯(ti)(ti)(ti)高(gao)架游覽(lan)車(che)類負載(zai)由于電梯(ti)(ti)(ti)是(shi)載(zai)人工(gong)(gong)具(ju)，要(yao)求(qiu)拖動(dong)系(xi)統高(gao)度(du)(du)可靠，又要(yao)頻(pin)(pin)(pin)繁的(de)加(jia)減速(su)和(he)正(zheng)反(fan)轉，電梯(ti)(ti)(ti)動(dong)態(tai)特性和(he)可靠性的(de)提(ti)高(gao)，邊增加(jia)了電梯(ti)(ti)(ti)乘(cheng)坐的(de)安全(quan)感、舒(shu)適感和(he)效(xiao)率。過去電梯(ti)(ti)(ti)調(diao)速(su)直(zhi)流居多(duo)，近幾年逐漸(jian)轉為(wei)交流電機變(bian)(bian)頻(pin)(pin)(pin)調(diao)速(su)，無論日(ri)本還是(shi)德(de)國(guo)。我國(guo)不少電梯(ti)(ti)(ti)廠都爭先恐(kong)后的(de)用(yong)變(bian)(bian)頻(pin)(pin)(pin)調(diao)速(su)來(lai)(lai)(lai)裝備電梯(ti)(ti)(ti)。如上海三菱、廣(guang)州日(ri)立、青島富士、天(tian)津奧(ao)的(de)斯等(deng)(deng)均采(cai)用(yong)交流變(bian)(bian)頻(pin)(pin)(pin)調(diao)速(su)。不少原來(lai)(lai)(lai)生(sheng)產(chan)(chan)的(de)電梯(ti)(ti)(ti)也進行了變(bian)(bian)頻(pin)(pin)(pin)改造。維凱美迪（上海）高(gao)新技(ji)術有限(xian)公司主營各類歐美進口繼電器(qi)，德(de)國(guo)Erpo，力士樂等(deng)(deng)，歡迎來(lai)(lai)(lai)電咨詢。原裝進口直(zhi)接式變(bian)(bian)頻(pin)(pin)(pin)器(qi)用(yong)途

維凱美(mei)迪（上海）高新技術有限公司主營各類歐美(mei)進口繼電器(qi)，德(de)國(guo)HBM，德(de)國(guo)賀德(de)克等，歡(huan)迎來電咨詢。原裝進口直接式變頻(pin)器(qi)用途

矩陣式(shi)交—交控制方式(shi)：

1、控(kong)(kong)(kong)制(zhi)定(ding)子(zi)磁(ci)鏈(lian)引(yin)入定(ding)子(zi)磁(ci)鏈(lian)觀測器，實(shi)(shi)現無(wu)速(su)(su)度(du)傳感器方式； 2、自動識別(ID)依靠精確的(de)電(dian)機數學模(mo)型，對(dui)電(dian)機參數自動識別； 3、算出實(shi)(shi)際(ji)值(zhi)對(dui)應定(ding)子(zi)阻抗、互感、磁(ci)飽和因素、慣(guan)量(liang)等算出實(shi)(shi)際(ji)的(de)轉(zhuan)矩(ju)、定(ding)子(zi)磁(ci)鏈(lian)、轉(zhuan)子(zi)速(su)(su)度(du)進行實(shi)(shi)時控(kong)(kong)(kong)制(zhi)； 4、實(shi)(shi)現Band—Band控(kong)(kong)(kong)制(zhi)按磁(ci)鏈(lian)和轉(zhuan)矩(ju)的(de)Band—Band控(kong)(kong)(kong)制(zhi)產生PWM信號，對(dui)逆變(bian)器開關狀態進行控(kong)(kong)(kong)制(zhi)。 矩(ju)陣式交—交變(bian)頻具有快速(su)(su)的(de)轉(zhuan)矩(ju)響應(<2ms)，很高的(de)速(su)(su)度(du)精度(du)(±2%，無(wu)PG反饋)，高轉(zhuan)矩(ju)精度(du)(<+3%)；同(tong)時還具有較高的(de)起(qi)動轉(zhuan)矩(ju)及高轉(zhuan)矩(ju)精度(du)，尤其在低速(su)(su)時(包(bao)括0速(su)(su)度(du)時)，可輸出150%～200%轉(zhuan)矩(ju)。原裝進口直接式變(bian)頻器用途

維凱美迪(di)（上海）高新技(ji)術有限公(gong)司專(zhuan)注技(ji)術創新和(he)產品研發(fa)(fa)，發(fa)(fa)展規(gui)模團(tuan)隊(dui)不斷壯(zhuang)大。一批專(zhuan)業的(de)技(ji)術團(tuan)隊(dui)，是(shi)實現企(qi)業戰略目標(biao)的(de)基(ji)礎，是(shi)企(qi)業持(chi)(chi)續發(fa)(fa)展的(de)動力(li)。維凱美迪(di)（上海）高新技(ji)術有限公(gong)司主營業務(wu)涵蓋傳感(gan)器，液(ye)壓(ya)閥(fa)，火(huo)花塞(sai)，流量(liang)(liang)計，堅(jian)持(chi)(chi)“質量(liang)(liang)保證、良好服務(wu)、顧客滿意”的(de)質量(liang)(liang)方(fang)針，贏得廣(guang)大客戶的(de)支持(chi)(chi)和(he)信賴。一直(zhi)以(yi)來公(gong)司堅(jian)持(chi)(chi)以(yi)客戶為(wei)(wei)中心、傳感(gan)器，液(ye)壓(ya)閥(fa)，火(huo)花塞(sai)，流量(liang)(liang)計市場為(wei)(wei)導(dao)向(xiang)，重信譽，保質量(liang)(liang)，想客戶之所想，急(ji)用戶之所急(ji)，全力(li)以(yi)赴滿足客戶的(de)一切需要。

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