變(bian)頻(pin)器(qi)製(zhi)動(dong)電(dian)阻(zu)是(shi)用(yong)於(yu)將(jiang)電(dian)動(dong)機(ji)的(de)再(zai)生(sheng)能(neng)量(liang)以(yi)熱(re)能(neng)方(fang)式(shi)消(xiao)耗(hao)的(de)載(zai)體(ti)，它(ta)包(bao)括(kuo)電(dian)阻(zu)阻(zu)值(zhi)和(he)功(gong)率(lv)容(rong)量(liang)兩(liang)個(ge)重(zhong)要(yao)的(de)參(can)數(shu)。製(zhi)動(dong)電(dian)阻(zu)主(zhu)要(yao)是(shi)用(yong)來(lai)消(xiao)耗(hao)伺(si)服(fu)電(dian)機(ji)製(zhi)動(dong)（急停）時產生的能量
，不然可能會燒壞驅動器。

 

 

 

 

變(bian)頻(pin)器(qi)帶(dai)動(dong)的(de)電(dian)機(ji)或(huo)其(qi)他(ta)感(gan)性(xing)負(fu)載(zai)在(zai)停(ting)機(ji)的(de)時(shi)候(hou)，一(yi)般(ban)都(dou)是(shi)采(cai)用(yong)能(neng)耗(hao)製(zhi)動(dong)的(de)方(fang)式(shi)來(lai)實(shi)現(xian)的(de)，就(jiu)是(shi)把(ba)停(ting)止(zhi)後(hou)電(dian)機(ji)的(de)動(dong)能(neng)和(he)線(xian)圈(quan)裏(li)麵(mian)的(de)磁(ci)能(neng)都(dou)通(tong)過(guo)一(yi)個(ge)別(bie)的(de)耗(hao)能(neng)元(yuan)件(jian)消(xiao)耗(hao)掉(diao),從(cong)而(er)實(shi)現(xian)快(kuai)速(su)停(ting)車(che)。當(dang)供(gong)電(dian)停(ting)止(zhi)後(hou)，變(bian)頻(pin)器(qi)的(de)逆(ni)變(bian)電(dian)路(lu)就(jiu)反(fan)向(xiang)導(dao)通(tong)，把(ba)這(zhe)些(xie)剩(sheng)餘(yu)電(dian)能(neng)反(fan)饋(kui)到(dao)變(bian)頻(pin)器(qi)的(de)直(zhi)流(liu)母(mu)線(xian)上(shang)來(lai)，直(zhi)流(liu)母(mu)線(xian)上(shang)的(de)電(dian)壓(ya)會(hui)因(yin)此(ci)而(er)升(sheng)高(gao)，當(dang)升(sheng)高(gao)到(dao)一(yi)定(ding)值(zhi)的(de)時(shi)候(hou)，變(bian)頻(pin)器(qi)的(de)製(zhi)動(dong)電(dian)阻(zu)就(jiu)投(tou)入(ru)運(yun)行(xing)，使(shi)這(zhe)部(bu)分(fen)電(dian)能(neng)通(tong)過(guo)電(dian)阻(zu)發(fa)熱(re)的(de)方(fang)式(shi)消(xiao)耗(hao)掉(diao)，同(tong)時(shi)維(wei)持(chi)直(zhi)流(liu)母(mu)線(xian)上(shang)的(de)電(dian)壓(ya)為(wei)一(yi)個(ge)正(zheng)常(chang)值(zhi)。

 

 

 

 

當dang伺si服fu電dian機ji製zhi動dong的de時shi候hou，該gai伺si服fu電dian機ji處chu於yu發fa電dian狀zhuang態tai。這zhe意yi味wei著zhe能neng量liang將jiang會hui返fan回hui到dao伺si服fu驅qu動dong器qi的de直zhi流liu母mu線xian上shang。因yin為wei直zhi流liu母mu線xian包bao含han電dian容rong
，所suo以yi直zhi流liu母mu線xian電dian壓ya會hui上shang升sheng。電dian壓ya增zeng加jia的de多duo少shao取qu決jue於yu開kai始shi製zhi動dong時shi電dian機ji的de動dong能neng以yi及ji直zhi流liu母mu線xian上shang電dian容rong的de容rong量liang。如ru果guo製zhi動dong動dong能neng大da於yu直zhi流liu母mu線xian上shang的de電dian容rong量liang

，同tong時shi直zhi流liu母mu線xian上shang沒mei有you其qi他ta驅qu動dong器qi容rong納na該gai能neng量liang，那na麼me驅qu動dong器qi將jiang會hui通tong過guo製zhi動dong電dian阻zu來lai消xiao耗hao該gai能neng量liang，或huo者zhe將jiang其qi反fan饋kui給gei供gong電dian電dian源yuan.

 

 

 

 

電dian機ji減jian速su時shi
，過guo大da的de設she備bei慣guan量liang會hui將jiang電dian動dong機ji變bian成cheng發fa電dian機ji，這zhe是shi出chu於yu發fa電dian運yun行xing狀zhuang態tai
，電dian機ji反fan向xiang給gei變bian頻pin器qi供gong電dian，這zhe會hui造zao成cheng變bian頻pin器qi過guo壓ya報bao警jing。為wei了le釋shi放fang這zhe部bu分fen能neng量liang，采cai用yong增zeng大da電dian阻zu功gong率lv（適當減小電阻值）的de方fang法fa來lai實shi現xian的de。也ye有you采cai用yong可ke反fan向xiang供gong電dian到dao電dian源yuan回hui路lu的de，這zhe在zai共gong直zhi流liu母mu線xian的de變bian頻pin係xi統tong中zhong運yun用yong的de比bi較jiao多duo
，可ke節jie能neng。製zhi動dong電dian阻zu和he發fa電dian效xiao果guo是shi一yi樣yang的de，可ke防fang止zhi變bian頻pin器qi減jian速su過guo壓ya

，減jian小xiao減jian速su距ju離li，提ti高gao動dong態tai性xing能neng。

 

電dian機ji內nei置zhi製zhi動dong器qi一yi般ban是shi做zuo最zui後hou停ting車che製zhi動dong的de
，而er不bu做zuo減jian速su製zhi動dong，這zhe和he電dian阻zu製zhi動dong是shi有you本ben質zhi區qu別bie的de，因yin為wei電dian阻zu製zhi動dong隻zhi有you電dian機ji減jian速su的de過guo程cheng中zhong有you作zuo用yong，在zai電dian機ji停ting止zhi後hou是shi沒mei有you效xiao果guo的de，必bi須xu采cai用yong刹sha車che才cai能neng讓rang電dian機ji保bao持chi靜jing止zhi（有位能負載）。

 

 

 

 

zaibianpintiaosuxitongzhong
，dianjidejiangsuhetingjishitongguozhujianjianxiaopinlvlaishixiande，zaipinlvjianxiaodeshunjian，dianjidetongbuzhuansusuizhixiajiang，eryouyujixieguanxingdeyuanyin
，dianjidezhuanzizhuansuweibian。dangtongbuzhuansuxiaoyuzhuanzizhuansushi，zhuanzidianliudexiangweijihugaibianle180度，電機從電動狀態變為發電狀態
；yucitongshi，dianjizhoushangdezhuanjubianchenglezhidongzhuanju，shidianjidezhuansuxunsuxiajiang，dianjichuyuzaishengzhidongzhuangtai。dianjizaishengdediannengjingxuliuerjiguanquanbozhengliuhoufankuidaozhiliudianlu。youyuzhiliudianludediannengwufatongguozhengliuqiaohuikuidaodianwang，jinkaobianpinqibenshendedianrongxishou，suiranqitabufennengxiaohaodianneng，dandianrongrengyouduanshijiandedianheduiji，xingcheng“泵升電壓”，使直流電壓升高。過高的直流電壓將使各部分器件受到損害。

 

因此在機械慣性比較大的係統中，需要采用製動電阻
，如升降機、數控機床
、提升機等

 

 

 

 

製動電阻的選型：動作電壓710V

 

1)電阻功率（千瓦）=電機千瓦數*(10%--50%)，