上海海光電(dian)(dian)(dian)(dian)機(ji)(ji)(ji)(ji)(ji)(ji)(ji)(ji)(ji)有限(xian)公司的(de)(de)(de)變頻(pin)(pin)(pin)電(dian)(dian)(dian)(dian)機(ji)(ji)(ji)(ji)(ji)(ji)(ji)(ji)(ji)結構(gou)通(tong)(tong)(tong)常(chang)包括(kuo)(kuo)以(yi)(yi)(yi)下幾個部(bu)(bu)(bu)分：電(dian)(dian)(dian)(dian)機(ji)(ji)(ji)(ji)(ji)(ji)(ji)(ji)(ji)主體(ti)：包括(kuo)(kuo)電(dian)(dian)(dian)(dian)機(ji)(ji)(ji)(ji)(ji)(ji)(ji)(ji)(ji)外(wai)殼、定子(zi)和(he)(he)(he)轉(zhuan)(zhuan)(zhuan)子(zi)。定子(zi)是電(dian)(dian)(dian)(dian)機(ji)(ji)(ji)(ji)(ji)(ji)(ji)(ji)(ji)的(de)(de)(de)靜止部(bu)(bu)(bu)分，通(tong)(tong)(tong)常(chang)由(you)鐵(tie)芯和(he)(he)(he)繞組組成；轉(zhuan)(zhuan)(zhuan)子(zi)是電(dian)(dian)(dian)(dian)機(ji)(ji)(ji)(ji)(ji)(ji)(ji)(ji)(ji)的(de)(de)(de)旋轉(zhuan)(zhuan)(zhuan)部(bu)(bu)(bu)分，通(tong)(tong)(tong)常(chang)由(you)鐵(tie)芯和(he)(he)(he)永磁體(ti)組成。變頻(pin)(pin)(pin)器(qi)：用(yong)于(yu)控(kong)制(zhi)(zhi)電(dian)(dian)(dian)(dian)機(ji)(ji)(ji)(ji)(ji)(ji)(ji)(ji)(ji)的(de)(de)(de)轉(zhuan)(zhuan)(zhuan)速和(he)(he)(he)輸出(chu)功(gong)率(lv)。變頻(pin)(pin)(pin)器(qi)通(tong)(tong)(tong)常(chang)由(you)整流器(qi)、逆變器(qi)和(he)(he)(he)控(kong)制(zhi)(zhi)電(dian)(dian)(dian)(dian)路(lu)組成，可(ke)以(yi)(yi)(yi)將輸入(ru)的(de)(de)(de)交(jiao)(jiao)流電(dian)(dian)(dian)(dian)轉(zhuan)(zhuan)(zhuan)換為(wei)可(ke)調(diao)頻(pin)(pin)(pin)率(lv)和(he)(he)(he)可(ke)調(diao)電(dian)(dian)(dian)(dian)壓的(de)(de)(de)交(jiao)(jiao)流電(dian)(dian)(dian)(dian)供給電(dian)(dian)(dian)(dian)機(ji)(ji)(ji)(ji)(ji)(ji)(ji)(ji)(ji)。傳(chuan)(chuan)感器(qi)：用(yong)于(yu)檢測電(dian)(dian)(dian)(dian)機(ji)(ji)(ji)(ji)(ji)(ji)(ji)(ji)(ji)的(de)(de)(de)轉(zhuan)(zhuan)(zhuan)速、溫(wen)(wen)度(du)和(he)(he)(he)電(dian)(dian)(dian)(dian)流等(deng)(deng)參數(shu)，并將這(zhe)些參數(shu)傳(chuan)(chuan)輸給變頻(pin)(pin)(pin)器(qi)進行(xing)控(kong)制(zhi)(zhi)。常(chang)見的(de)(de)(de)傳(chuan)(chuan)感器(qi)包括(kuo)(kuo)轉(zhuan)(zhuan)(zhuan)速傳(chuan)(chuan)感器(qi)、溫(wen)(wen)度(du)傳(chuan)(chuan)感器(qi)和(he)(he)(he)電(dian)(dian)(dian)(dian)流傳(chuan)(chuan)感器(qi)。控(kong)制(zhi)(zhi)系(xi)統(tong)：用(yong)于(yu)監測和(he)(he)(he)控(kong)制(zhi)(zhi)電(dian)(dian)(dian)(dian)機(ji)(ji)(ji)(ji)(ji)(ji)(ji)(ji)(ji)的(de)(de)(de)運(yun)行(xing)狀態(tai)。控(kong)制(zhi)(zhi)系(xi)統(tong)通(tong)(tong)(tong)常(chang)由(you)微處理器(qi)、控(kong)制(zhi)(zhi)電(dian)(dian)(dian)(dian)路(lu)和(he)(he)(he)人(ren)機(ji)(ji)(ji)(ji)(ji)(ji)(ji)(ji)(ji)界面(mian)組成，可(ke)以(yi)(yi)(yi)實(shi)現(xian)對(dui)電(dian)(dian)(dian)(dian)機(ji)(ji)(ji)(ji)(ji)(ji)(ji)(ji)(ji)的(de)(de)(de)啟停(ting)、轉(zhuan)(zhuan)(zhuan)速調(diao)節(jie)和(he)(he)(he)故障保護(hu)等(deng)(deng)功(gong)能(neng)。總(zong)之，上海海光電(dian)(dian)(dian)(dian)機(ji)(ji)(ji)(ji)(ji)(ji)(ji)(ji)(ji)有限(xian)公司的(de)(de)(de)變頻(pin)(pin)(pin)電(dian)(dian)(dian)(dian)機(ji)(ji)(ji)(ji)(ji)(ji)(ji)(ji)(ji)結構(gou)是由(you)電(dian)(dian)(dian)(dian)機(ji)(ji)(ji)(ji)(ji)(ji)(ji)(ji)(ji)主體(ti)、變頻(pin)(pin)(pin)器(qi)、傳(chuan)(chuan)感器(qi)和(he)(he)(he)控(kong)制(zhi)(zhi)系(xi)統(tong)等(deng)(deng)組成的(de)(de)(de)。這(zhe)種(zhong)結構(gou)可(ke)以(yi)(yi)(yi)實(shi)現(xian)對(dui)電(dian)(dian)(dian)(dian)機(ji)(ji)(ji)(ji)(ji)(ji)(ji)(ji)(ji)的(de)(de)(de)轉(zhuan)(zhuan)(zhuan)速和(he)(he)(he)輸出(chu)功(gong)率(lv)進行(xing)精(jing)確控(kong)制(zhi)(zhi)，提高電(dian)(dian)(dian)(dian)機(ji)(ji)(ji)(ji)(ji)(ji)(ji)(ji)(ji)的(de)(de)(de)效率(lv)和(he)(he)(he)可(ke)靠性(xing)。變頻(pin)(pin)(pin)電(dian)(dian)(dian)(dian)機(ji)(ji)(ji)(ji)(ji)(ji)(ji)(ji)(ji)具(ju)有較好的(de)(de)(de)電(dian)(dian)(dian)(dian)壓和(he)(he)(he)頻(pin)(pin)(pin)率(lv)適應性(xing)，能(neng)夠適應不(bu)同地區的(de)(de)(de)電(dian)(dian)(dian)(dian)網供電(dian)(dian)(dian)(dian)條件。廣東節(jie)能(neng)變頻(pin)(pin)(pin)電(dian)(dian)(dian)(dian)機(ji)(ji)(ji)(ji)(ji)(ji)(ji)(ji)(ji)公司

直接控制電(dian)(dian)(dian)(dian)機(ji)的(de)(de)(de)(de)轉(zhuan)速(su)。在(zai)(zai)每(mei)一(yi)(yi)個基本(ben)頻率開始時(shi),脈沖(chong)極(ji)性從(cong)正(zheng)到(dao)負(fu)或從(cong)負(fu)到(dao)正(zheng),在(zai)(zai)這(zhe)一(yi)(yi)時(shi)刻,電(dian)(dian)(dian)(dian)機(ji)絕(jue)緣(yuan)承受著一(yi)(yi)個二倍于(yu)(yu)(yu)尖(jian)峰(feng)電(dian)(dian)(dian)(dian)壓(ya)(ya)值的(de)(de)(de)(de)全幅電(dian)(dian)(dian)(dian)壓(ya)(ya)。另外(wai),在(zai)(zai)一(yi)(yi)個散嵌(qian)繞(rao)(rao)組的(de)(de)(de)(de)三(san)相(xiang)電(dian)(dian)(dian)(dian)機(ji)中,不(bu)(bu)同相(xiang)的(de)(de)(de)(de)相(xiang)鄰(lin)二匝之(zhi)間(jian)(jian)的(de)(de)(de)(de)電(dian)(dian)(dian)(dian)壓(ya)(ya)極(ji)性可能(neng)(neng)(neng)會(hui)(hui)不(bu)(bu)同,全幅電(dian)(dian)(dian)(dian)壓(ya)(ya)的(de)(de)(de)(de)躍變也(ye)有(you)可能(neng)(neng)(neng)達到(dao)二倍于(yu)(yu)(yu)一(yi)(yi)個尖(jian)峰(feng)電(dian)(dian)(dian)(dian)壓(ya)(ya)值。據(ju)測(ce)試(shi),PWM變頻器輸出(chu)的(de)(de)(de)(de)電(dian)(dian)(dian)(dian)壓(ya)(ya)波(bo)形(xing),在(zai)(zai)380/480V交流系統中,在(zai)(zai)電(dian)(dian)(dian)(dian)機(ji)端測(ce)得的(de)(de)(de)(de)尖(jian)峰(feng)電(dian)(dian)(dian)(dian)壓(ya)(ya)值為～～。非常明顯,在(zai)(zai)此全幅電(dian)(dian)(dian)(dian)壓(ya)(ya)作用(yong)(yong)下,繞(rao)(rao)組匝間(jian)(jian)產(chan)生(sheng)(sheng)表面局部(bu)放(fang)電(dian)(dian)(dian)(dian)。由于(yu)(yu)(yu)電(dian)(dian)(dian)(dian)離作用(yong)(yong),在(zai)(zai)氣隙中又會(hui)(hui)產(chan)生(sheng)(sheng)空間(jian)(jian)電(dian)(dian)(dian)(dian)荷(he),從(cong)而(er)形(xing)成(cheng)一(yi)(yi)個與(yu)外(wai)加電(dian)(dian)(dian)(dian)場反(fan)向的(de)(de)(de)(de)感應電(dian)(dian)(dian)(dian)場。當(dang)電(dian)(dian)(dian)(dian)壓(ya)(ya)極(ji)性改變時(shi),這(zhe)個反(fan)向電(dian)(dian)(dian)(dian)場與(yu)外(wai)加電(dian)(dian)(dian)(dian)場方(fang)向一(yi)(yi)致。這(zhe)樣,一(yi)(yi)個更(geng)(geng)高的(de)(de)(de)(de)電(dian)(dian)(dian)(dian)場產(chan)生(sheng)(sheng),它會(hui)(hui)導(dao)致局部(bu)放(fang)電(dian)(dian)(dian)(dian)的(de)(de)(de)(de)數量增(zeng)(zeng)加,**終(zhong)引起擊(ji)穿。測(ce)試(shi)表明,作用(yong)(yong)于(yu)(yu)(yu)這(zhe)些匝間(jian)(jian)絕(jue)緣(yuan)的(de)(de)(de)(de)電(dian)(dian)(dian)(dian)沖(chong)擊(ji)大(da)小取決于(yu)(yu)(yu)導(dao)線特定的(de)(de)(de)(de)性能(neng)(neng)(neng)和PWM驅動電(dian)(dian)(dian)(dian)流的(de)(de)(de)(de)上(shang)(shang)(shang)升(sheng)時(shi)間(jian)(jian)。若上(shang)(shang)(shang)升(sheng)時(shi)間(jian)(jian)小于(yu)(yu)(yu)μs,則(ze)將有(you)80%的(de)(de)(de)(de)電(dian)(dian)(dian)(dian)勢加在(zai)(zai)繞(rao)(rao)組的(de)(de)(de)(de)前(qian)二匝上(shang)(shang)(shang),即上(shang)(shang)(shang)升(sheng)時(shi)間(jian)(jian)越短,電(dian)(dian)(dian)(dian)沖(chong)擊(ji)就(jiu)越大(da),匝間(jian)(jian)絕(jue)緣(yuan)的(de)(de)(de)(de)壽(shou)命就(jiu)越短[1]。。當(dang)頻率增(zeng)(zeng)加時(shi),局部(bu)放(fang)電(dian)(dian)(dian)(dian)隨之(zhi)增(zeng)(zeng)加,結果(guo)產(chan)生(sheng)(sheng)熱量,這(zhe)些熱量則(ze)引起更(geng)(geng)大(da)的(de)(de)(de)(de)漏電(dian)(dian)(dian)(dian)流,從(cong)而(er)使(shi)Ni上(shang)(shang)(shang)升(sheng)更(geng)(geng)快(kuai),即電(dian)(dian)(dian)(dian)機(ji)溫(wen)升(sheng)上(shang)(shang)(shang)升(sheng),絕(jue)緣(yuan)加速(su)老(lao)化。總之(zhi),在(zai)(zai)變頻電(dian)(dian)(dian)(dian)機(ji)中正(zheng)是由于(yu)(yu)(yu)上(shang)(shang)(shang)述局部(bu)放(fang)電(dian)(dian)(dian)(dian)、電(dian)(dian)(dian)(dian)介質加熱、空間(jian)(jian)電(dian)(dian)(dian)(dian)荷(he)感應等(deng)因素的(de)(de)(de)(de)共同作用(yong)(yong)引起電(dian)(dian)(dian)(dian)磁線的(de)(de)(de)(de)過早損壞。山東附(fu)近變頻電(dian)(dian)(dian)(dian)機(ji)變頻電(dian)(dian)(dian)(dian)機(ji)可以(yi)實現多種保護功能(neng)(neng)(neng)。

同(tong)(tong)(tong)步(bu)(bu)電(dian)(dian)動(dong)機(ji)(ji)的(de)(de)工作原理是利用(yong)(yong)定(ding)子(zi)(zi)(zi)(zi)繞(rao)組產生的(de)(de)旋(xuan)轉(zhuan)(zhuan)(zhuan)磁場與(yu)轉(zhuan)(zhuan)(zhuan)子(zi)(zi)(zi)(zi)磁極之間的(de)(de)磁力作用(yong)(yong)，使轉(zhuan)(zhuan)(zhuan)子(zi)(zi)(zi)(zi)跟隨旋(xuan)轉(zhuan)(zhuan)(zhuan)磁場同(tong)(tong)(tong)步(bu)(bu)旋(xuan)轉(zhuan)(zhuan)(zhuan)。當電(dian)(dian)源(yuan)頻(pin)(pin)率(lv)和磁極對(dui)數(shu)(shu)確定(ding)時，轉(zhuan)(zhuan)(zhuan)速(su)(su)是固(gu)定(ding)的(de)(de)，不(bu)受(shou)負載(zai)的(de)(de)影響。同(tong)(tong)(tong)步(bu)(bu)電(dian)(dian)動(dong)機(ji)(ji)具有(you)運(yun)行穩(wen)定(ding)性(xing)高和過(guo)(guo)載(zai)能(neng)力大的(de)(de)特點。它(ta)(ta)常(chang)用(yong)(yong)于多(duo)機(ji)(ji)同(tong)(tong)(tong)步(bu)(bu)傳動(dong)系統(tong)，可以實現多(duo)臺電(dian)(dian)機(ji)(ji)的(de)(de)同(tong)(tong)(tong)步(bu)(bu)運(yun)行，保證各個電(dian)(dian)機(ji)(ji)的(de)(de)轉(zhuan)(zhuan)(zhuan)速(su)(su)一致(zhi)。同(tong)(tong)(tong)時，同(tong)(tong)(tong)步(bu)(bu)電(dian)(dian)動(dong)機(ji)(ji)還常(chang)用(yong)(yong)于精(jing)密調(diao)(diao)(diao)速(su)(su)穩(wen)速(su)(su)系統(tong)，可以通(tong)過(guo)(guo)調(diao)(diao)(diao)整(zheng)電(dian)(dian)源(yuan)頻(pin)(pin)率(lv)來(lai)控(kong)制轉(zhuan)(zhuan)(zhuan)速(su)(su)，實現精(jing)確的(de)(de)調(diao)(diao)(diao)速(su)(su)要(yao)求。此外，同(tong)(tong)(tong)步(bu)(bu)電(dian)(dian)動(dong)機(ji)(ji)還廣(guang)泛應(ying)用(yong)(yong)于大型設(she)備，如軋鋼機(ji)(ji)等(deng)，可以提供穩(wen)定(ding)的(de)(de)動(dong)力輸出。同(tong)(tong)(tong)步(bu)(bu)電(dian)(dian)動(dong)機(ji)(ji)的(de)(de)另一個重要(yao)應(ying)用(yong)(yong)是改進供電(dian)(dian)系統(tong)的(de)(de)功(gong)(gong)率(lv)因數(shu)(shu)。由于同(tong)(tong)(tong)步(bu)(bu)電(dian)(dian)動(dong)機(ji)(ji)是容性(xing)負載(zai)，它(ta)(ta)可以通(tong)過(guo)(guo)調(diao)(diao)(diao)整(zheng)電(dian)(dian)源(yuan)頻(pin)(pin)率(lv)和磁極對(dui)數(shu)(shu)來(lai)改變(bian)功(gong)(gong)率(lv)因數(shu)(shu)，提高供電(dian)(dian)系統(tong)的(de)(de)功(gong)(gong)率(lv)因數(shu)(shu)，減少無功(gong)(gong)功(gong)(gong)率(lv)的(de)(de)損(sun)耗。總(zong)之，同(tong)(tong)(tong)步(bu)(bu)電(dian)(dian)動(dong)機(ji)(ji)是一種轉(zhuan)(zhuan)(zhuan)子(zi)(zi)(zi)(zi)轉(zhuan)(zhuan)(zhuan)向與(yu)定(ding)子(zi)(zi)(zi)(zi)旋(xuan)轉(zhuan)(zhuan)(zhuan)磁場的(de)(de)轉(zhuan)(zhuan)(zhuan)向相同(tong)(tong)(tong)的(de)(de)交流電(dian)(dian)機(ji)(ji)，具有(you)轉(zhuan)(zhuan)(zhuan)速(su)(su)穩(wen)定(ding)、運(yun)行可靠(kao)、過(guo)(guo)載(zai)能(neng)力強(qiang)等(deng)特點，廣(guang)泛應(ying)用(yong)(yong)于多(duo)機(ji)(ji)同(tong)(tong)(tong)步(bu)(bu)傳動(dong)系統(tong)、精(jing)密調(diao)(diao)(diao)速(su)(su)穩(wen)速(su)(su)系統(tong)和大型設(she)備等(deng)領域。

變(bian)(bian)頻(pin)(pin)(pin)電(dian)(dian)(dian)(dian)機(ji)(ji)的(de)(de)(de)分(fen)析主(zhu)要包(bao)括以(yi)(yi)下幾個(ge)方面：轉(zhuan)(zhuan)速(su)(su)調(diao)節范圍：變(bian)(bian)頻(pin)(pin)(pin)電(dian)(dian)(dian)(dian)機(ji)(ji)可(ke)(ke)(ke)(ke)以(yi)(yi)實現的(de)(de)(de)轉(zhuan)(zhuan)速(su)(su)調(diao)節范圍，通(tong)常可(ke)(ke)(ke)(ke)以(yi)(yi)在(zai)額(e)定(ding)轉(zhuan)(zhuan)速(su)(su)的(de)(de)(de)10%至200%之間進行(xing)調(diao)節。這使得變(bian)(bian)頻(pin)(pin)(pin)電(dian)(dian)(dian)(dian)機(ji)(ji)在(zai)不同的(de)(de)(de)工(gong)況下能(neng)(neng)夠靈活地適應轉(zhuan)(zhuan)速(su)(su)要求。能(neng)(neng)效(xiao)提升：由于(yu)變(bian)(bian)頻(pin)(pin)(pin)電(dian)(dian)(dian)(dian)機(ji)(ji)可(ke)(ke)(ke)(ke)以(yi)(yi)根據(ju)負載需求調(diao)整轉(zhuan)(zhuan)速(su)(su)，因此(ci)可(ke)(ke)(ke)(ke)以(yi)(yi)避免電(dian)(dian)(dian)(dian)機(ji)(ji)在(zai)低負載時的(de)(de)(de)能(neng)(neng)量浪(lang)費。此(ci)外，變(bian)(bian)頻(pin)(pin)(pin)電(dian)(dian)(dian)(dian)機(ji)(ji)還可(ke)(ke)(ke)(ke)以(yi)(yi)通(tong)過調(diao)整電(dian)(dian)(dian)(dian)機(ji)(ji)的(de)(de)(de)功率因數來提高能(neng)(neng)效(xiao)。轉(zhuan)(zhuan)矩控制：變(bian)(bian)頻(pin)(pin)(pin)電(dian)(dian)(dian)(dian)機(ji)(ji)可(ke)(ke)(ke)(ke)以(yi)(yi)通(tong)過變(bian)(bian)頻(pin)(pin)(pin)器(qi)調(diao)整電(dian)(dian)(dian)(dian)機(ji)(ji)的(de)(de)(de)輸(shu)出轉(zhuan)(zhuan)矩。這使得變(bian)(bian)頻(pin)(pin)(pin)電(dian)(dian)(dian)(dian)機(ji)(ji)在(zai)啟(qi)動(dong)、加速(su)(su)和(he)(he)減速(su)(su)過程中能(neng)(neng)夠提供(gong)更(geng)高的(de)(de)(de)轉(zhuan)(zhuan)矩，從(cong)而提高了電(dian)(dian)(dian)(dian)機(ji)(ji)的(de)(de)(de)動(dong)態性能(neng)(neng)。噪(zao)音和(he)(he)振動(dong)控制：由于(yu)變(bian)(bian)頻(pin)(pin)(pin)電(dian)(dian)(dian)(dian)機(ji)(ji)可(ke)(ke)(ke)(ke)以(yi)(yi)實現平(ping)穩(wen)的(de)(de)(de)啟(qi)動(dong)和(he)(he)停止，因此(ci)可(ke)(ke)(ke)(ke)以(yi)(yi)減少(shao)電(dian)(dian)(dian)(dian)機(ji)(ji)的(de)(de)(de)噪(zao)音和(he)(he)振動(dong)。變(bian)(bian)頻(pin)(pin)(pin)電(dian)(dian)(dian)(dian)機(ji)(ji)可(ke)(ke)(ke)(ke)以(yi)(yi)實現自(zi)動(dong)調(diao)節負載，延長設備(bei)壽命(ming)。

在包(bao)裝(zhuang)和(he)印(yin)刷行業，上海(hai)海(hai)光電(dian)(dian)機(ji)有限公(gong)司HSF系列電(dian)(dian)機(ji)可(ke)以(yi)(yi)實(shi)現(xian)包(bao)裝(zhuang)和(he)印(yin)刷設(she)(she)(she)備的(de)(de)高(gao)速運動(dong)和(he)精(jing)(jing)確(que)控(kong)制(zhi)，提(ti)高(gao)生產效(xiao)率(lv)和(he)產品質(zhi)量。在自動(dong)化流水線(xian)上，HSF系列電(dian)(dian)機(ji)可(ke)以(yi)(yi)實(shi)現(xian)產品的(de)(de)自動(dong)化運輸和(he)定(ding)位(wei)，提(ti)高(gao)生產線(xian)的(de)(de)效(xiao)率(lv)和(he)穩定(ding)性(xing)。總之(zhi)，HSF系列電(dian)(dian)機(ji)是(shi)一種(zhong)高(gao)精(jing)(jing)度位(wei)置控(kong)制(zhi)設(she)(she)(she)備，適用(yong)于各種(zhong)需要精(jing)(jing)確(que)控(kong)制(zhi)的(de)(de)設(she)(she)(she)備。它具有超高(gao)效(xiao)、超小慣量、超小體積等(deng)(deng)特點，配(pei)置了日(ri)本多摩川高(gao)精(jing)(jing)度編(bian)碼器等(deng)(deng)高(gao)科(ke)技配(pei)置，能夠提(ti)供較好的(de)(de)運行性(xing)能。它的(de)(de)應(ying)用(yong)范圍非常，可(ke)以(yi)(yi)滿足不同設(she)(she)(she)備的(de)(de)需求(qiu)，是(shi)實(shi)現(xian)工業4.0的(de)(de)必(bi)備基礎產品之(zhi)一。變頻電(dian)(dian)機(ji)可(ke)以(yi)(yi)適應(ying)不同的(de)(de)工作環境和(he)工作條件。山(shan)東(dong)本地變頻電(dian)(dian)機(ji)

變頻(pin)電機(ji)可以實(shi)現(xian)高(gao)精度的位置控(kong)制。廣(guang)東節能(neng)變頻(pin)電機(ji)公司

在(zai)此全幅電(dian)(dian)(dian)壓作(zuo)(zuo)(zuo)用下繞組(zu)之間(jian)會產生(sheng)表面(mian)局部(bu)放(fang)電(dian)(dian)(dian)。是因為電(dian)(dian)(dian)壓的(de)(de)(de)(de)(de)(de)作(zuo)(zuo)(zuo)用會導(dao)致(zhi)氣(qi)隙中(zhong)的(de)(de)(de)(de)(de)(de)空氣(qi)分子電(dian)(dian)(dian)離，產生(sheng)電(dian)(dian)(dian)荷。這(zhe)些電(dian)(dian)(dian)荷會形成(cheng)一個與外(wai)加(jia)(jia)電(dian)(dian)(dian)場(chang)方向相反(fan)的(de)(de)(de)(de)(de)(de)感應電(dian)(dian)(dian)場(chang)。當電(dian)(dian)(dian)壓的(de)(de)(de)(de)(de)(de)極(ji)性(xing)改變，感應電(dian)(dian)(dian)場(chang)與外(wai)加(jia)(jia)電(dian)(dian)(dian)場(chang)方向一致(zhi)，導(dao)致(zhi)一個更高的(de)(de)(de)(de)(de)(de)電(dian)(dian)(dian)場(chang)產生(sheng)。這(zhe)會導(dao)致(zhi)局部(bu)放(fang)電(dian)(dian)(dian)的(de)(de)(de)(de)(de)(de)數量增加(jia)(jia)，終引起(qi)擊(ji)穿。作(zuo)(zuo)(zuo)用于繞組(zu)間(jian)絕(jue)(jue)緣(yuan)的(de)(de)(de)(de)(de)(de)電(dian)(dian)(dian)沖(chong)擊(ji)大(da)小取決于導(dao)線(xian)的(de)(de)(de)(de)(de)(de)特定性(xing)能和PWM驅動電(dian)(dian)(dian)流的(de)(de)(de)(de)(de)(de)上升時(shi)間(jian)。如(ru)果上升時(shi)間(jian)小于微秒級(ji)，80%的(de)(de)(de)(de)(de)(de)電(dian)(dian)(dian)勢將(jiang)加(jia)(jia)在(zai)繞組(zu)的(de)(de)(de)(de)(de)(de)前兩匝上。換句(ju)話說，上升時(shi)間(jian)越(yue)短，電(dian)(dian)(dian)沖(chong)擊(ji)越(yue)大(da)，繞組(zu)間(jian)絕(jue)(jue)緣(yuan)的(de)(de)(de)(de)(de)(de)壽命(ming)就越(yue)短。當頻率增加(jia)(jia)時(shi)，局部(bu)放(fang)電(dian)(dian)(dian)也會增加(jia)(jia)，產生(sheng)熱(re)量。這(zhe)些熱(re)量會引起(qi)更大(da)的(de)(de)(de)(de)(de)(de)漏(lou)電(dian)(dian)(dian)流，使繞組(zu)溫度上升，加(jia)(jia)速絕(jue)(jue)緣(yuan)老化。總之，在(zai)變頻電(dian)(dian)(dian)機中(zhong)，局部(bu)放(fang)電(dian)(dian)(dian)、電(dian)(dian)(dian)介質加(jia)(jia)熱(re)、空間(jian)電(dian)(dian)(dian)荷感應等因素共(gong)同(tong)作(zuo)(zuo)(zuo)用導(dao)致(zhi)電(dian)(dian)(dian)磁線(xian)的(de)(de)(de)(de)(de)(de)過(guo)早損(sun)壞。廣東(dong)節能變頻電(dian)(dian)(dian)機公(gong)司(si)

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