水(shui)(shui)電(dian)(dian)(dian)阻_水(shui)(shui)阻柜(ju)_水(shui)(shui)電(dian)(dian)(dian)阻起(qi)(qi)動(dong)柜(ju)_高壓水(shui)(shui)電(dian)(dian)(dian)阻軟起(qi)(qi)動(dong)柜(ju)_高壓液態(tai)軟起(qi)(qi)動(dong)的(de)一(yi)個(ge)重(zhong)點(dian)價(jia)(jia)(jia)值就(jiu)是(shi)(shi)品(pin)(pin)牌(pai)(pai)價(jia)(jia)(jia)值，品(pin)(pin)牌(pai)(pai)價(jia)(jia)(jia)值的(de)來源是(shi)(shi)多方面的(de)，根(gen)本的(de)一(yi)點(dian)就(jiu)是(shi)(shi)消費(fei)者認可(ke)但是(shi)(shi)又超越消費(fei)者的(de)自身(shen)價(jia)(jia)(jia)值，包(bao)括品(pin)(pin)牌(pai)(pai)形象、品(pin)(pin)牌(pai)(pai)感(gan)(gan)知(zhi)力和品(pin)(pin)牌(pai)(pai)文化等(deng)。提升(sheng)品(pin)(pin)牌(pai)(pai)的(de)感(gan)(gan)知(zhi)力是(shi)(shi)一(yi)個(ge)品(pin)(pin)牌(pai)(pai)價(jia)(jia)(jia)值根(gen)本的(de)體現，如何提升(sheng)品(pin)(pin)牌(pai)(pai)的(de)感(gan)(gan)知(zhi)力，生產水(shui)(shui)電(dian)(dian)(dian)阻_水(shui)(shui)阻柜(ju)_水(shui)(shui)電(dian)(dian)(dian)阻起(qi)(qi)動(dong)柜(ju)_高壓水(shui)(shui)電(dian)(dian)(dian)阻軟起(qi)(qi)動(dong)柜(ju)_高壓液態(tai)軟起(qi)(qi)動(dong)產品(pin)(pin)的(de)湖(hu)北(bei)盛(sheng)州(zhou)機電(dian)(dian)(dian)成套設備有限公司，總(zong)結了以(yi)下(xia)幾點(dian)：

，上海變頻(pin)器，水電(dian)(dian)(dian)(dian)(dian)阻(zu)(zu)(zu)_水阻(zu)(zu)(zu)柜_水電(dian)(dian)(dian)(dian)(dian)阻(zu)(zu)(zu)起(qi)(qi)(qi)(qi)動(dong)(dong)(dong)(dong)柜_高(gao)(gao)壓(ya)水電(dian)(dian)(dian)(dian)(dian)阻(zu)(zu)(zu)軟(ruan)(ruan)起(qi)(qi)(qi)(qi)動(dong)(dong)(dong)(dong)柜_高(gao)(gao)壓(ya)液(ye)態(tai)軟(ruan)(ruan)起(qi)(qi)(qi)(qi)動(dong)(dong)(dong)(dong)產(chan)品(pin)定(ding)位務必要(yao)清(qing)晰(xi)。在當(dang)前軟(ruan)(ruan)起(qi)(qi)(qi)(qi)動(dong)(dong)(dong)(dong)競爭紅海中(zhong)，伴隨著大量的(de)(de)(de)(de)(de)新(xin)品(pin)的(de)(de)(de)(de)(de)夭折同(tong)時也會有(you)大量的(de)(de)(de)(de)(de)新(xin)品(pin)誕生，華(hua)邦變頻(pin)器，在這個潮起(qi)(qi)(qi)(qi)潮落(luo)的(de)(de)(de)(de)(de)行(xing)業中(zhong)，產(chan)品(pin)的(de)(de)(de)(de)(de)定(ding)位乃是重中(zhong)之重的(de)(de)(de)(de)(de)事情(qing)，因(yin)為這牽扯到產(chan)品(pin)與眾(zhong)不同(tong)差異化(hua)(hua)的(de)(de)(de)(de)(de)根(gen)本(ben)，要(yao)清(qing)晰(xi)表達我(wo)是誰，以(yi)便于(yu)消費者能(neng)從浩瀚的(de)(de)(de)(de)(de)產(chan)品(pin)中(zhong)對于(yu)本(ben)品(pin)知(zhi)道。如湖北盛(sheng)州機(ji)(ji)(ji)電(dian)(dian)(dian)(dian)(dian)成(cheng)套設備有(you)限公司生產(chan)的(de)(de)(de)(de)(de)水電(dian)(dian)(dian)(dian)(dian)阻(zu)(zu)(zu)_水阻(zu)(zu)(zu)柜_水電(dian)(dian)(dian)(dian)(dian)阻(zu)(zu)(zu)起(qi)(qi)(qi)(qi)動(dong)(dong)(dong)(dong)柜_高(gao)(gao)壓(ya)水電(dian)(dian)(dian)(dian)(dian)阻(zu)(zu)(zu)軟(ruan)(ruan)起(qi)(qi)(qi)(qi)動(dong)(dong)(dong)(dong)柜_高(gao)(gao)壓(ya)液(ye)態(tai)軟(ruan)(ruan)起(qi)(qi)(qi)(qi)動(dong)(dong)(dong)(dong)，變頻(pin)器是什么，根(gen)據電(dian)(dian)(dian)(dian)(dian)動(dong)(dong)(dong)(dong)機(ji)(ji)(ji)起(qi)(qi)(qi)(qi)動(dong)(dong)(dong)(dong)理論，在電(dian)(dian)(dian)(dian)(dian)動(dong)(dong)(dong)(dong)機(ji)(ji)(ji)的(de)(de)(de)(de)(de)定(ding)子(zi)回路(lu)(lu)中(zhong)串入一適當(dang)的(de)(de)(de)(de)(de)可變水電(dian)(dian)(dian)(dian)(dian)阻(zu)(zu)(zu)進(jin)行(xing)分壓(ya)，充(chong)分利(li)用水電(dian)(dian)(dian)(dian)(dian)阻(zu)(zu)(zu)熱容量大不會燒毀以(yi)及可調可恢復性(xing)等優良特性(xing)，通(tong)過(guo)控制系統控制傳動(dong)(dong)(dong)(dong)機(ji)(ji)(ji)構拖動(dong)(dong)(dong)(dong)電(dian)(dian)(dian)(dian)(dian)極極板運(yun)動(dong)(dong)(dong)(dong)，改(gai)(gai)變動(dong)(dong)(dong)(dong)、定(ding)極板間的(de)(de)(de)(de)(de)距(ju)離，從而達到改(gai)(gai)變水電(dian)(dian)(dian)(dian)(dian)阻(zu)(zu)(zu)阻(zu)(zu)(zu)值的(de)(de)(de)(de)(de)大小，使(shi)水電(dian)(dian)(dian)(dian)(dian)阻(zu)(zu)(zu)阻(zu)(zu)(zu)值的(de)(de)(de)(de)(de)變化(hua)(hua)與電(dian)(dian)(dian)(dian)(dian)動(dong)(dong)(dong)(dong)機(ji)(ji)(ji)轉(zhuan)差率(lv)的(de)(de)(de)(de)(de)變化(hua)(hua)同(tong)步(bu)，達到恒電(dian)(dian)(dian)(dian)(dian)流起(qi)(qi)(qi)(qi)動(dong)(dong)(dong)(dong)的(de)(de)(de)(de)(de)目的(de)(de)(de)(de)(de)，并使(shi)電(dian)(dian)(dian)(dian)(dian)動(dong)(dong)(dong)(dong)機(ji)(ji)(ji)均(jun)勻加(jia)速至額定(ding)轉(zhuan)速，縮(suo)短起(qi)(qi)(qi)(qi)動(dong)(dong)(dong)(dong)時間。當(dang)起(qi)(qi)(qi)(qi)動(dong)(dong)(dong)(dong)完成(cheng)后，星點接觸器自動(dong)(dong)(dong)(dong)投入并旁路(lu)(lu)水電(dian)(dian)(dian)(dian)(dian)阻(zu)(zu)(zu)，電(dian)(dian)(dian)(dian)(dian)動(dong)(dong)(dong)(dong)機(ji)(ji)(ji)全壓(ya)運(yun)行(xing)。

總之，我國550KV高壓開(kai)關設(she)備有大的發展(zhan)空間。據電(dian)力部(bu)(bu)門提供(gong)的資(zi)料，2003年電(dian)力系統裝(zhuang)備550KVSF6斷路(lu)器(qi)164臺(tai)，而2003年高壓開(kai)關行(xing)業才生(sheng)(sheng)產73臺(tai)，2004年也只有77臺(tai)（不包括外資(zi)及合(he)(he)資(zi)企(qi)業），缺口基本為外國產品所填補。550KVGIS的產量(liang)更少(shao)，變頻器(qi)生(sheng)(sheng)產，2003年僅生(sheng)(sheng)產4間隔，由于國內能力及裝(zhuang)備政(zheng)策關系，三峽左(zuo)岸39間隔550KVGIS全部(bu)(bu)被ABB公司中標。550KVGIS反映(ying)了一個企(qi)業的綜合(he)(he)生(sheng)(sheng)產能力，它(ta)是附(fu)加值很高的高科技產品。

高壓超高壓領域是國內企業提高占有率的一個重要方面。超高壓部分市場上升空間大，技術含量高，現已有引進消化的基礎，需要加大研制力度，提高技術水平，爭取在斷路器、GIS和混合技術開關設備產品方面擴大市場占有率。

基本分類單元串聯型變頻器

利德華福高壓變頻器(qi)再創新這是近幾年才發展起來的(de)一種電路拓撲(pu)結構，它主要由(you)輸(shu)入(ru)變壓器(qi)、功率單元和控(kong)制(zhi)單元三大部(bu)分組成。采用(yong)模塊(kuai)化設計，由(you)于采用(yong)功率單元相互串聯的(de)辦法解決了高壓的(de)難題(ti)而得(de)名，可直接(jie)驅動交流(liu)電動機，無需(xu)輸(shu)出變壓器(qi)，更不(bu)需(xu)要任何形式的(de)濾波器(qi)。

該變頻器的特點如下(xia)：

① 采(cai)用(yong)多(duo)重化PWM方式控制，輸出電壓波(bo)形(xing)接近正弦波(bo)。

② 整(zheng)流電路的多(duo)(duo)重(zhong)化，脈沖數多(duo)(duo)達36，功率因數高，輸入諧波(bo)小。

③ 模塊(kuai)化設(she)計，結構緊(jin)湊，維護方便，增強(qiang)了產(chan)品的互換性。

④ 直接高壓輸(shu)出，無需輸(shu)出變壓器。

⑤ 極低的dv/dt輸出，無需任(ren)何(he)形式的濾波器。

⑥ 采用光(guang)纖(xian)通(tong)訊技術(shu)，提高了產品的(de)抗干(gan)擾能力和可靠性(xing)。

⑦ 功率單元自動旁通電路，能夠實現故障不停機功能。

同整流器相反，逆變(bian)器是將直流功率變(bian)換為(wei)所(suo)要求頻率的交流功率，以所(suo)確定的時(shi)(shi)間使6個開關(guan)器件導通、關(guan)斷就可以得到3相交流輸出。以電壓(ya)型pwm逆變(bian)器為(wei)例(li)示出開關(guan)時(shi)(shi)間和(he)電壓(ya)波形。

控制(zhi)電(dian)(dian)(dian)(dian)路(lu)是給異(yi)步電(dian)(dian)(dian)(dian)動(dong)機(ji)供電(dian)(dian)(dian)(dian)（電(dian)(dian)(dian)(dian)壓(ya)、頻率可調）的(de)(de)主電(dian)(dian)(dian)(dian)路(lu)提供控制(zhi)信號的(de)(de)回(hui)路(lu)，它有頻率、電(dian)(dian)(dian)(dian)壓(ya)的(de)(de)“運算(suan)電(dian)(dian)(dian)(dian)路(lu)”，主電(dian)(dian)(dian)(dian)路(lu)的(de)(de)“電(dian)(dian)(dian)(dian)壓(ya)、電(dian)(dian)(dian)(dian)流檢(jian)測電(dian)(dian)(dian)(dian)路(lu)”，電(dian)(dian)(dian)(dian)動(dong)機(ji)的(de)(de)“速度檢(jian)測電(dian)(dian)(dian)(dian)路(lu)”，將運算(suan)電(dian)(dian)(dian)(dian)路(lu)的(de)(de)控制(zhi)信號進行(xing)放大的(de)(de)“驅動(dong)電(dian)(dian)(dian)(dian)路(lu)”，以及逆變器和電(dian)(dian)(dian)(dian)動(dong)機(ji)的(de)(de)“保護電(dian)(dian)(dian)(dian)路(lu)”組成。

（1）運算電(dian)路(lu)(lu)：將外(wai)部的(de)(de)速度、轉矩(ju)等指令同檢測電(dian)路(lu)(lu)的(de)(de)電(dian)流(liu)、電(dian)壓(ya)信(xin)號進行比較運算，決定逆變器的(de)(de)輸(shu)出電(dian)壓(ya)、頻率。

（2）電壓、電流檢(jian)測(ce)電路：與主回路電位隔離檢(jian)測(ce)電壓、電流等。

（3）驅動(dong)電(dian)(dian)(dian)路：驅動(dong)主電(dian)(dian)(dian)路器(qi)件的(de)電(dian)(dian)(dian)路。它與控制電(dian)(dian)(dian)路隔離使主電(dian)(dian)(dian)路器(qi)件導通(tong)、關斷。

（4）速(su)度(du)檢(jian)測(ce)電路(lu):以(yi)裝在異步電動機(ji)軸機(ji)上的(de)速(su)度(du)檢(jian)測(ce)器(tg、plg等)的(de)信(xin)(xin)號(hao)為速(su)度(du)信(xin)(xin)號(hao)，送入運算(suan)回路(lu)，根據指(zhi)令和運算(suan)可使(shi)電動機(ji)按指(zhi)令速(su)度(du)運轉。

（5）保護電(dian)(dian)路：檢(jian)測(ce)主電(dian)(dian)路的電(dian)(dian)壓(ya)、電(dian)(dian)流(liu)等，當發(fa)生過(guo)載或(huo)過(guo)電(dian)(dian)壓(ya)等異(yi)常時，為了防止逆變(bian)器和異(yi)步(bu)電(dian)(dian)動(dong)機損壞，使逆變(bian)器停止工作或(huo)抑制(zhi)電(dian)(dian)壓(ya)、電(dian)(dian)流(liu)值。