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变频控制系统

时间:2019年04月01日 作者:佚名 来源:xbypjd.com

  BIANPINQI(Variable-frequency Drive,VFD)SHIYINGYONGBIANPINJISHUYUWEIDIANZIJISHU,TONGGUOGAIBIANDIANJIGONGZUODIANYUANPINLVFANGSHILAIKONGZHIJIAOLIUDIANDONGJIDEDIANLIKONGZHISHEBEI。BIANPINQIZHUYAOYOUZHENGLIU(JIAOLIUBIANZHILIU)、LVBO、NIBIAN(ZHILIUBIANJIAOLIU)、ZHIDONGDANYUAN、QUDONGDANYUAN、JIANCEDANYUANWEICHULIDANYUANDENGZUCHENG。BIANPINQIKAONEIBUIGBTDEKAIDUANLAIDIAOZHENGSHUCHUDIANYUANDEDIANYAHEPINLV,GENJUDIANJIDESHIJIXUYAOLAITIGONGQISUOXUYAODEDIANYUANDIANYA,JINERDADAOJIENENG、DIAOSUDEMUDE,LINGWAI,BIANPINQIHAIYOUHENDUODEBAOHUGONGNENG,RUGUOLIU、GUOYA、GUOZAIBAOHUDENGDENG。SUIZHEGONGYEZIDONGHUACHENGDUDEBUDUANTIGAO,BIANPINQIYEDEDAOLEFEICHANGGUANGFANDEYINGYONG。

  ◎工作原理概述

全民快乐8  ZHUDIANLUSHIJIYIBUDIANDONGJITIGONGDIAOYADIAOPINDIANYUANDEDIANLIBIANHUANBUFEN,BIANPINQIDEZHUDIANLUDATISHANGKEFENWEILIANGLEI:DIANYAXINGSHIJIANGDIANYAYUANDEZHILIUBIANHUANWEIJIAOLIUDEBIANPINQI,ZHILIUHUILUDELVBOSHIDIANRONG。DIANLIUXINGSHIJIANGDIANLIUYUANDEZHILIUBIANHUANWEIJIAOLIUDEBIANPINQI,QIZHILIUHUILULVBOSHIDIANGAN。 TAYOUSANBUFENGOUCHENG,JIANGGONGPINDIANYUANBIANHUANWEIZHILIUGONGLVDE“ZHENGLIUQI”,XISHOUZAIBIANLIUQIHENIBIANQICHANSHENGDEDIANYAMAIDONGDE“PINGBOHUILU”,YIJIJIANGZHILIUGONGLVBIANHUANWEIJIAOLIUGONGLVDE“NIBIANQI”。

未标题-1.jpg

  整流器

  ZUIJINDALIANGSHIYONGDESHIERJIGUANDEBIANLIUQI,TABAGONGPINDIANYUANBIANHUANWEIZHILIUDIANYUAN。YEKEYONGLIANGZUJINGTIGUANBIANLIUQIGOUCHENGKENIBIANLIUQI,YOUYUQIGONGLVFANGXIANGKENI,KEYIJINXINGZAISHENGYUNZHUAN。

  平波回路

  ZAIZHENGLIUQIZHENGLIUHOUDEZHILIUDIANYAZHONG,HANYOUDIANYUAN6BEIPINLVDEMAIDONGDIANYA,CIWAINIBIANQICHANSHENGDEMAIDONGDIANLIUYESHIZHILIUDIANYABIANDONG。WEILEYIZHIDIANYABODONG,CAIYONGDIANGANHEDIANRONGXISHOUMAIDONGDIANYA(DIANLIU)。ZHUANGZHIRONGLIANGXIAOSHI,RUGUODIANYUANHEZHUDIANLUGOUCHENGQIJIANYOUYULIANG,KEYISHENGQUDIANGANCAIYONGJIANDANDEPINGBOHUILU。

未标题-2.jpg

  逆变器

  同整流器相反,逆变器是将直流功率变换为所要求频率的交流功率,以所确定的时间使6个开关器件导通、关断就可以得到3相交流输出。以电压型pwm逆变器为例示出开关时间和电压波形。未标题-22.jpg

  KONGZHIDIANLUSHIJIYIBUDIANDONGJIGONGDIAN(DIANYA、PINLVKEDIAO)DEZHUDIANLUTIGONGKONGZHIXINHAODEHUILU,TAYOUPINLV、DIANYADE“YUNSUANDIANLU”,ZHUDIANLUDE“DIANYA、DIANLIUJIANCEDIANLU”,DIANDONGJIDE“SUDUJIANCEDIANLU”,JIANGYUNSUANDIANLUDEKONGZHIXINHAOJINXINGFANGDADE“QUDONGDIANLU”,YIJINIBIANQIHEDIANDONGJIDE“BAOHUDIANLU”ZUCHENG。

全民快乐8  (1)YUNSUANDIANLU:JIANGWAIBUDESUDU、ZHUANJUDENGZHILINGTONGJIANCEDIANLUDEDIANLIU、DIANYAXINHAOJINXINGBIJIAOYUNSUAN,JUEDINGNIBIANQIDESHUCHUDIANYA、PINLV。

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全民快乐8  (5)BAOHUDIANLU:JIANCEZHUDIANLUDEDIANYA、DIANLIUDENG,DANGFASHENGGUOZAIHUOGUODIANYADENGYICHANGSHI,WEILEFANGZHINIBIANQIHEYIBUDIANDONGJISUNHUAI,SHINIBIANQITINGZHIGONGZUOHUOYIZHIDIANYA、DIANLIUZHI。


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