服务咨询热线4008-823-813
网站球探足球比分直播
关于我们
产品中心
新闻动态
应用案例
资料下载
人才招聘
留言反馈
联系我们

新闻动态

当前位置:变频器厂家 > 新闻动态 >

变频器如何正确选择制动电阻

作者:德世奥变频器厂家来源:fynkgame.cn发布时间:2018/08/04 11:37

  ZHIDONGDIANZUQIZHIDONGDIANZUSHIYONGYUJIANGDIANDONGJIDEZAISHENGNENGLIANGYIRENENGFANGSHIXIAOHAODEZAITI,TABAOKUODIANZUZUZHIHEGONGLVRONGLIANGLIANGGEZHONGYAODECANSHU。TONGCHANGZAIGONGCHENGSHANGXUANYONGJIAODUODESHIBOWENDIANZUHELVHEJINDIANZULIANGZHONG:BOWENDIANZUCAIYONGBIAOMIANLISHIBOWENYOULIYUSANREJIANDIJISHENGDIANGANLIANG,BINGXUANYONGGAOZURANWUJITUCENG,YOUXIAOBAOHUDIANZUSIBUBEILAOHUA,YANZHANGSHIYONGSHOUMING,LVHEJINDIANZUYIJINMIANZHUANG、YIFUJIASANREQI,WAIXINGMEIGUAN,GAOSANREXINGDELVHEJINWAIHEQUANBAOFENGJIEGOU,JUYOUJIQIANGDENAIZHENXING,NAIQIHOUXINGHEZHANGQIWENDINGXING;TIJIXIAO、GONGLVDA,ANZHUANGFANGBIANWENGU,WAIXINGMEIGUAN,GUANGFANYINGYONGYUGAODUELIEGONGYEHUANJINGSHIYONG。


一、变频器带制动电阻是做什么用的

  1、电机减速时,过大的设备惯量会将电动机变成发电机,这是出于发电运行状态,电机反向给变频器供电,这会造成变频器过压报警。为了释放这部分能量,采用增大电阻功率(适当减小电阻值)的方法来实现的。也有采用可反向供电到电源回路的,这在共直流母线的变频系统中运用的比较多,可节能。制动电阻和发电效果是一样的,可防止变频器减速过压,减小减速距离,提高动态性能。

球探足球比分直播   DIANJINEIZHIZHIDONGQIYIBANSHIZUOZUIHOUTINGCHEZHIDONGDE,ERBUZUOJIANSUZHIDONG,ZHEIHEDIANZUZHIDONGSHIYOUBENZHIQUBIEDE,YINWEIDIANZUZHIDONGZHIYOUDIANJIJIANSUDEGUOCHENGZHONGYOUZUOYONG,ZAIDIANJITINGZHIHOUSHIMEIYOUXIAOGUODE,BIXUCAIYONGCHACHECAINENGRANGDIANJIBAOCHIJINGZHI(YOUWEINENGFUZAI)。

球探足球比分直播   2、DIANJIJIANSUSHI,GUODADESHEBEIGUANLIANGHUIJIANGDIANDONGJIBIANCHENGFADIANJI,ZHEISHICHUYUFADIANYUNXINGZHUANGTAI,DIANJIFANXIANGJIBIANPINQIGONGDIAN,ZHEIHUIZAOCHENGBIANPINQIGUOYABAOJING。WEILESHIFANGZHEIBUFENNENGLIANG,CAIYONGZENGDADIANZUGONGLV(SHIDANGJIANXIAODIANZUZHI)DEFANGFALAISHIXIANDE。YEYOUCAIYONGKEFANXIANGGONGDIANDAODIANYUANHUILUDE,ZHEIZAIGONGZHILIUMUXIANDEBIANPINXITONGZHONGYUNYONGDEBIJIAODUO,KEJIENENG。ZHIDONGDIANZUHEFADIANXIAOGUOSHIYIYANGDE,KEFANGZHIBIANPINQIJIANSUGUOYA,JIANXIAOJIANSUJULI,TIGAODONGTAIXINGNENG。

  DIANJINEIZHIZHIDONGQIYIBANSHIZUOZUIHOUTINGCHEZHIDONGDE,ERBUZUOJIANSUZHIDONG,ZHEIHEDIANZUZHIDONGSHIYOUBENZHIQUBIEDE,YINWEIDIANZUZHIDONGZHIYOUDIANJIJIANSUDEGUOCHENGZHONGYOUZUOYONG,ZAIDIANJITINGZHIHOUSHIMEIYOUXIAOGUODE,BIXUCAIYONGCHACHECAINENGRANGDIANJIBAOCHIJINGZHI(YOUWEINENGFUZAI)。

  3、BIRUSHUONIXUYAORANGDIANJIZAIGAOSUYUNXINGSHIHOULIKETINGXIALAI,DANSHIDIANJIYUNXINGSHIYOUGUANXINGDE,TEBIESHIDAGONGLVDEDIANJI,DAIDONGYIXIEDONGLIANGBIJIAODADESHEBEI,HENNANKUAISUTINGXIALAI,ZHEIGESHIHOUTINGCHESHIHOUGUANXINGZAOCHENGDEDONGNENGKEYIZHUANHUACHENGRENENGDEXINGSHISHIFANGCHULAI,XIAOHAOZHEIXIERENENGDEYUANQIJIANJIUSHIZHIDONGDIANZU。

  DIANJINEIZHIZHIDONGQIHENDUODOUSHIYONGDECHACHEPIANYILEIDEJIEGOULAIWANCHENGDE,YEYOUYIXIESHITONGGUOGAIBIANDIANJIZHUANZIWAIBUCICHANG,JIBENSHANGBUHUICAIYONGZHIDONGDIANZUDEZHIDONGYUANLI。

  
二、制动电阻为什么接直流母排上

  NANDAOZHIDONGDEGUOCHENGXUYAOXIANJIANGDIANDONGJIDESHENGYUDIANLIANGZHENGCHENGZHILIUDIANZAIXIAOHAODIAO?JIUSUANSHIZHEIYANG,YUANLAIMUPAISHANGBENLAIJIUCUNZAIDEDIANYAYOUZENMEBAN?

  BIANPINQIZHIDONGDIANZUDEZUOYONG,SHENMESHIHOUPEI、PEIDUODA,RUHEJISUAN?

  ZHEIGEWOSHIZHEIMELIJIEDE:DANGBIANPINQIJIANSUDESHIHOU,BIANPINQISHUCHUPINLVJIANGDI,DANSHIDIANJIYOUGAOSUBIANDISUDESHIHOU,DIANJIYOUDIANDONGZHUANGTAIBIANCHENGFADIANZHUANGTAI,FADEDIANJIUTONGGUOIGBTKAIGUANDESHIHOUFANHUIDAOZHILIUMUXIANLE,SUOYIZHIDONGDESHIHOUHUIDAOZHIZHILIUMUXIANDIANYASHENGGAO。

球探足球比分直播   ZHIDONGDIANZUSHIYONGDESHIHOUYAOPEIHEZHIDONGDANYUAN,DANGZHIDONGDANYUANTOURUDESHIHOU,JIANCEZHILIUMUXIANDIANYAGUOGAO,JIUHUIKONGZHIZHIDONGDANYUANNEIDEIGBTDAOTONG(HEBIANPINSHUCHUSIDE,JIANDUANDAOTONG)JINXINGFANGDIAN,DANGDIANYAXIAJIANGDAOSHEDINGZHIYIXIASHI,TINGZHICHUFA。

  
三、制动电阻阻值的计算

球探足球比分直播   ZHIDONGDIANZUDEXUANZECHUSHOUDAOBIANPINQIZHUANYONGXINGNENGHAOZHIDONGDANYUANZUIDAYUNXUDIANLIUDEXIANZHIWAI,YUZHIDONGDANYUANYEBINGWUMINGQUEDEDUIYINGGUANXI,QIZUZHIZHUYAOGENJUSUOXUZHIDONGZHUANJUDEDAXIAOXUANZE,GONGLVGENJUDIANZUDEZUZHIHESHIYONGLVQUEDING。 ZHIDONGDIANZUZUZHIDEXUANDINGYOUYIGEBUKEWEIBEIDEYUANZE:YINGBAOZHENGLIUGUOZHIDONGDIANZUDEDIANLIUICXIAOYUZHIDONGDANYUANDEYUNXUZUIDADIANLIUSHUCHUNENGLI,JI:R > 800/Ic。

球探足球比分直播   QIZHONG:800 —— BIANPINQIZHILIUCESUOKENENGCHUXIANDEZUIDAZHILIUDIANYA。Ic —— ZHIDONGDANYUANDEZUIDAYUNXUDIANLIU。

  WEICHONGFENLIYONGSUOXUANYONGDEBIANPINQIZHUANYONGXINGZHIDONGDANYUANDERONGLIANG,TONGCHANGZHIDONGDIANZUZUZHIDEXUANQUYIJIEJINSHANGSHIJISUANDEZUIXIAOZHIWEIZUIJINGJI、TONGSHIHAIKEHUODEZUIDADEZHIDONGZHUANJU,RANERZHEIXUYAOJIAODADEZHIDONGDIANZUGONGLV。ZAIMOUXIEQINGKUANGXIA,BINGBUXUYAOHENDADEZHIDONGZHUANJU,CISHIBIJIAOJINGJIDEBANFASHIXUANZEJIAODADEZHIDONGDIANZUZUZHI、YEYINCIKEYIJIANXIAOZHIDONGDIANZUDEGONGLV,CONGERJIANSHAOGOUMAIZHIDONGDIANZUSUOXUDEFEIYONG,ZHEIYANGDEDAIJIASHIZHIDONGDANYUANDERONGLIANGMEIYOUDEDAOCHONGFENLIYONG。

  
四、制动电阻功率的计算

  ZAIXUANDINGLEZHIDONGDIANZUDEZUZHIYIHOU,YINGGAIQUEDINGZHIDONGDIANZUDEGONGLVZHI,ZHIDONGDIANZUGONGLVDEXUANQUXIANGDUIBIJIAOFANSUO,TAYUHENDUOYINSUYOUGUAN。

  ZHIDONGDIANZUXIAOHAODESHUNSHIGONGLVANXIASHIJISUAN:P SHUN= 7002 /R

  ANSHANGSHIJISUANDEDAODEZHIDONGDIANZUGONGLVZHISHIZHIDONGDIANZUKEYIZHANGQIBUJIANDUANDEGONGZUOKEYIHAOSANDEGONGLVSHUZHI,RANERZHIDONGDIANZUBINGFEISHIBUJIANDUANDEGONGZUO,ZHEIZHONGXUANQUCUNZAIHENDADELANGFEI,ZAIBENCHANPINZHONG,KEYIXUANZEZHIDONGDIANZUDESHIYONGLV,TAGUIDINGLEZHIDONGDIANZUDEDUANSHIGONGZUOBILV。ZHIDONGDIANZUSHIJIXIAOHAODEGONGLVANXIASHIJISUAN:

球探足球比分直播   P E=7002 /R×rB%rB%:ZHIDONGDIANZUSHIYONGLV。

  SHIJISHIYONGZHONG,KEYIANZHAOSHANGSHIXUANZEZHIDONGDIANZUGONGLV,YEKEYIGENJUSUOXUANQUDEZHIDONGDIANZUZUZHIHEGONGLV,FANGUOLAIJISUANZHIDONGDIANZUSUONENGGOUCHENGSHOUDESHIYONGLV,CONGERZHENGQUESHEZHI,BIMIANZHIDONGDIANZUGUOREERSUNHUAI。

  
五、制动电阻使用功率的计算

  ZHIDONGDIANZUSHIYONGLVGUIDINGLEZHIDONGDIANZUDESHIYONGXIAOLV,YIBIMIANZHIDONGDIANZUGUOREERSUNHUAI,TAHUIYINGXIANGZHIDONGDANYUANDEZHIDONGXIAOGUO。ZHIDONGDIANZUDESHIYONGLVSHEZHIYUEDI,DIANZUDEFARECHENGDUYUEXIAO,DIANZUSHANGXIAOHAODENENGLIANGYUESHAO,ZHIDONGXIAOGUOYUECHA。TONGSHI,ZHIDONGDANYUANDERONGLIANGYEMEIYOUDEDAOCHONGFENLIYONG。

  LILUNSHANGJIANG,ZHIDONGDIANZUSHIYONGLVWEI100%SHI,DUIZHIDONGDANYUANRONGLIANGDELIYONGZUICHONGFEN,ZHIDONGXIAOGUOYEZUIMINGXIAN,RANERZHEIXUYAOJIAODADEZHIDONGDIANZUGONGLVDEDAIJIA,SHIYONGZHEYINGZONGHEKAOLV。ZAIZHIDONGDIANZUZUZHIHEGONGLVDOUYIJINGQUEDINGDEQIANTIXIA,DUIYUJIANSUJIAOMANDEDAGUANXINGFUZAI,XUANQUJIAODIDEDIANZUSHIYONGLVHUIQUDEJIAOHAODEXIAOGUO。DUIYUXUYAOKUAISUTINGJIDEFUZAI,YIXUANQUJIAODAZHIDONGDIANZUSHIYONGLV。