軟(ruan)(ruan)(ruan)(ruan)起(qi)(qi)(qi)動器一(yi)種集電(dian)(dian)機(ji)(ji)軟(ruan)(ruan)(ruan)(ruan)起(qi)(qi)(qi)動、軟(ruan)(ruan)(ruan)(ruan)停車、輕載節(jie)能和(he)多(duo)種保護功能于一(yi)體(ti)的(de)新穎電(dian)(dian)機(ji)(ji)控(kong)制裝置(zhi)，國外稱(cheng)為Soft Starter。軟(ruan)(ruan)(ruan)(ruan)起(qi)(qi)(qi)動器采用(yong)(yong)(yong)三(san)相(xiang)(xiang)反并聯晶(jing)閘(zha)管作(zuo)為調壓器，將其接入電(dian)(dian)源(yuan)和(he)電(dian)(dian)動機(ji)(ji)定(ding)(ding)子之間。這種電(dian)(dian)路如三(san)相(xiang)(xiang)全(quan)(quan)控(kong)橋式整(zheng)流電(dian)(dian)路。使用(yong)(yong)(yong)軟(ruan)(ruan)(ruan)(ruan)起(qi)(qi)(qi)動器啟(qi)動電(dian)(dian)動機(ji)(ji)時(shi)(shi)(shi)，晶(jing)閘(zha)管的(de)輸出(chu)電(dian)(dian)壓逐(zhu)(zhu)漸(jian)增加，電(dian)(dian)動機(ji)(ji)逐(zhu)(zhu)漸(jian)加速(su)，直(zhi)到(dao)晶(jing)閘(zha)管全(quan)(quan)導通，電(dian)(dian)動機(ji)(ji)工作(zuo)在額(e)定(ding)(ding)電(dian)(dian)壓的(de)機(ji)(ji)械特性(xing)上，實(shi)現(xian)平(ping)滑啟(qi)動，降低(di)啟(qi)動電(dian)(dian)流，避(bi)免啟(qi)動過流跳閘(zha)。待電(dian)(dian)機(ji)(ji)達到(dao)額(e)定(ding)(ding)轉(zhuan)(zhuan)(zhuan)數時(shi)(shi)(shi)，啟(qi)動過程(cheng)(cheng)結束，軟(ruan)(ruan)(ruan)(ruan)起(qi)(qi)(qi)動器自動用(yong)(yong)(yong)旁路接觸(chu)器取代已完成任務的(de)晶(jing)閘(zha)管，為電(dian)(dian)動機(ji)(ji)正常運(yun)轉(zhuan)(zhuan)(zhuan)提供額(e)定(ding)(ding)電(dian)(dian)壓，以降低(di)晶(jing)閘(zha)管的(de)熱損(sun)耗，延(yan)(yan)長軟(ruan)(ruan)(ruan)(ruan)起(qi)(qi)(qi)動器的(de)使用(yong)(yong)(yong)壽命，提高其工作(zuo)效率，又使電(dian)(dian)網(wang)避(bi)免了諧(xie)波污(wu)染。軟(ruan)(ruan)(ruan)(ruan)起(qi)(qi)(qi)動器同時(shi)(shi)(shi)還提供軟(ruan)(ruan)(ruan)(ruan)停車功能，軟(ruan)(ruan)(ruan)(ruan)停車與軟(ruan)(ruan)(ruan)(ruan)啟(qi)動過程(cheng)(cheng)相(xiang)(xiang)反，電(dian)(dian)壓逐(zhu)(zhu)漸(jian)降低(di)，轉(zhuan)(zhuan)(zhuan)數逐(zhu)(zhu)漸(jian)下(xia)降到(dao)零，避(bi)免自由停車引起(qi)(qi)(qi)的(de)轉(zhuan)(zhuan)(zhuan)矩沖擊(ji)。 可(ke)靈活實(shi)現(xian)軟(ruan)(ruan)(ruan)(ruan)起(qi)(qi)(qi)和(he)軟(ruan)(ruan)(ruan)(ruan)停,且軟(ruan)(ruan)(ruan)(ruan)起(qi)(qi)(qi)和(he)軟(ruan)(ruan)(ruan)(ruan)停時(shi)(shi)(shi)間可(ke)調，軟(ruan)(ruan)(ruan)(ruan)起(qi)(qi)(qi)初始電(dian)(dian)壓(初始轉(zhuan)(zhuan)(zhuan)矩)多(duo)檔可(ke)選。從而大(da)大(da)地降低(di)了電(dian)(dian)機(ji)(ji)起(qi)(qi)(qi)動時(shi)(shi)(shi)的(de)電(dian)(dian)流和(he)機(ji)(ji)械轉(zhuan)(zhuan)(zhuan)矩沖擊(ji)，保護了電(dian)(dian)機(ji)(ji)設(she)備(bei)和(he)供電(dian)(dian)網(wang)絡的(de)安全(quan)(quan)。可(ke)廣(guang)泛(fan)應用(yong)(yong)(yong)于各種電(dian)(dian)機(ji)(ji)裝置(zhi)中(zhong)，如：空調、冰箱、冷凍柜和(he)水泵等(deng)控(kong)制系統(tong)中(zhong)。從而讓用(yong)(yong)(yong)戶(hu)可(ke)以降低(di)對供電(dian)(dian)網(wang)絡質量(liang)的(de)要求,減輕電(dian)(dian)網(wang)負擔并延(yan)(yan)長設(she)備(bei)的(de)使用(yong)(yong)(yong)命。

經典應用

●水(shui)(shui)泵(beng)(beng)：利(li)用(yong)(yong)泵(beng)(beng)控制功能，在起動和停止時，減少液流沖擊(ji)所產生的泵(beng)(beng)流水(shui)(shui)錘現象，節省了(le)系統維修費用(yong)(yong)；

●球磨(mo)(mo)機：利用電(dian)壓(ya)斜(xie)坡起動，減少齒輪轉矩(ju)的(de)磨(mo)(mo)損，減少維修的(de)工作量，延長使用壽命；

●風機：利用固態軟(ruan)起動器取代(dai)了傳統起動器，減少(shao)皮帶磨(mo)損和機械沖擊；

●壓縮機：利用限流(liu)，實現了平滑起動，降低電機溫(wen)升；

●破碎機：利用堵轉保護和快(kuai)速保護，避免機械故障和阻塞造成電動機過熱而燒(shao)毀；

●輸(shu)送(song)機械：利(li)用軟(ruan)起(qi)動和(he)軟(ruan)停機控制，實現平(ping)滑漸進的(de)(de)起(qi)動過程(cheng)和(he)平(ping)滑減速的(de)(de)停車過程(cheng)，避(bi)免了因沖(chong)擊而對物料和(he)設備造(zao)成的(de)(de)損傷。