3、巨磁(ci)阻电(dian)(dian)(dian)流(liu)(liu)(liu)传感(gan)(gan)器(qi)(qi)巨磁(ci)阻电(dian)(dian)(dian)流(liu)(liu)(liu)传感(gan)(gan)器(qi)(qi)是基于(yu)(yu)(yu)GMR（GiantMegnetoResistant）效应来(lai)进行(xing)电(dian)(dian)(dian)流(liu)(liu)(liu)测(ce)量(liang)(liang)的(de)(de)(de)(de)，即通过电(dian)(dian)(dian)阻随磁(ci)场(chang)变(bian)化(hua)来(lai)测(ce)量(liang)(liang)电(dian)(dian)(dian)流(liu)(liu)(liu)。GMR电(dian)(dian)(dian)流(liu)(liu)(liu)传感(gan)(gan)器(qi)(qi)具有小体积、高(gao)精度(du)(du)、高(gao)灵敏度(du)(du)、宽测(ce)量(liang)(liang)范围、低(di)成(cheng)本和高(gao)集成(cheng)度(du)(du)以及(ji)能够测(ce)量(liang)(liang)交直(zhi)流(liu)(liu)(liu)等优点(dian)，因此(ci)应用在许多领(ling)域中(zhong)。然而，由(you)于(yu)(yu)(yu)巨磁(ci)阻电(dian)(dian)(dian)流(liu)(liu)(liu)传感(gan)(gan)器(qi)(qi)受自身(shen)磁(ci)性材料(liao)特点(dian)的(de)(de)(de)(de)限制(zhi)，对外(wai)界磁(ci)场(chang)以及(ji)温度(du)(du)的(de)(de)(de)(de)变(bian)化(hua)较为(wei)敏感(gan)(gan)，易受周(zhou)围环境杂散(san)磁(ci)场(chang)的(de)(de)(de)(de)影(ying)响，从而导致较大的(de)(de)(de)(de)输出(chu)误差，降低(di)测(ce)量(liang)(liang)结(jie)果的(de)(de)(de)(de)准确度(du)(du),不适合用于(yu)(yu)(yu)复杂环境下的(de)(de)(de)(de)电(dian)(dian)(dian)流(liu)(liu)(liu)的(de)(de)(de)(de)检测(ce)。在电(dian)(dian)(dian)力系(xi)统中(zhong)，磁(ci)通门电(dian)(dian)(dian)流(liu)(liu)(liu)传感(gan)(gan)器(qi)(qi)可以用于(yu)(yu)(yu)测(ce)量(liang)(liang)电(dian)(dian)(dian)网中(zhong)的(de)(de)(de)(de)交流(liu)(liu)(liu)电(dian)(dian)(dian)流(liu)(liu)(liu)，以监控(kong)电(dian)(dian)(dian)力系(xi)统的(de)(de)(de)(de)运(yun)行(xing)状态和电(dian)(dian)(dian)力质量(liang)(liang)。北京漏电(dian)(dian)(dian)保(bao)护(hu)电(dian)(dian)(dian)流(liu)(liu)(liu)传感(gan)(gan)器(qi)(qi)单价(jia)

误差控制电(dian)(dian)(dian)(dian)(dian)路(lu)(lu)(lu)(lu)由PI环节(jie)构成，其(qi)(qi)直(zhi)流(liu)开环增(zeng)益越大越好(hao)，同时要(yao)求所选(xuan)择运(yun)(yun)(yun)算放(fang)大器(qi)(qi)(qi)失调电(dian)(dian)(dian)(dian)(dian)压小，单(dan)位增(zeng)益带宽大，选(xuan)用(yong)OP27G高精密运(yun)(yun)(yun)放(fang)。误差控制电(dian)(dian)(dian)(dian)(dian)路(lu)(lu)(lu)(lu)输出(chu)(chu)直(zhi)接连(lian)接PA功(gong)(gong)率(lv)(lv)(lv)放(fang)大电(dian)(dian)(dian)(dian)(dian)路(lu)(lu)(lu)(lu)，以(yi)(yi)驱动其(qi)(qi)输出(chu)(chu)反馈电(dian)(dian)(dian)(dian)(dian)流(liu)IF。常见(jian)的(de)(de)功(gong)(gong)率(lv)(lv)(lv)放(fang)大电(dian)(dian)(dian)(dian)(dian)路(lu)(lu)(lu)(lu)包括集成功(gong)(gong)率(lv)(lv)(lv)放(fang)大电(dian)(dian)(dian)(dian)(dian)路(lu)(lu)(lu)(lu)以(yi)(yi)及三极管(guan)等功(gong)(gong)率(lv)(lv)(lv)器(qi)(qi)(qi)件(jian)搭建的(de)(de)A类(lei)(lei)，B类(lei)(lei)，AB类(lei)(lei)，D类(lei)(lei)，H类(lei)(lei)功(gong)(gong)率(lv)(lv)(lv)放(fang)大电(dian)(dian)(dian)(dian)(dian)路(lu)(lu)(lu)(lu)[9,50]。在基(ji)于磁通(tong)(tong)门原理的(de)(de)直(zhi)流(liu)电(dian)(dian)(dian)(dian)(dian)流(liu)测(ce)量的(de)(de)类(lei)(lei)似(si)方案(an)中(zhong)，为(wei)(wei)(wei)了(le)通(tong)(tong)过降低功(gong)(gong)率(lv)(lv)(lv)放(fang)大电(dian)(dian)(dian)(dian)(dian)路(lu)(lu)(lu)(lu)的(de)(de)功(gong)(gong)耗(hao)以(yi)(yi)改善整个系统的(de)(de)运(yun)(yun)(yun)行(xing)(xing)功(gong)(gong)耗(hao)，D类(lei)(lei)功(gong)(gong)率(lv)(lv)(lv)放(fang)大电(dian)(dian)(dian)(dian)(dian)路(lu)(lu)(lu)(lu)，H类(lei)(lei)功(gong)(gong)率(lv)(lv)(lv)放(fang)大电(dian)(dian)(dian)(dian)(dian)路(lu)(lu)(lu)(lu)常有(you)出(chu)(chu)现，但该类(lei)(lei)功(gong)(gong)率(lv)(lv)(lv)放(fang)大电(dian)(dian)(dian)(dian)(dian)路(lu)(lu)(lu)(lu)输出(chu)(chu)纹波(bo)较(jiao)大，因此对反馈电(dian)(dian)(dian)(dian)(dian)流(liu)中(zhong)交(jiao)(jiao)直(zhi)流(liu)测(ce)量带来误差。为(wei)(wei)(wei)了(le)减小功(gong)(gong)率(lv)(lv)(lv)放(fang)大电(dian)(dian)(dian)(dian)(dian)路(lu)(lu)(lu)(lu)环节(jie)的(de)(de)输出(chu)(chu)纹波(bo)，本(ben)文(wen)选(xuan)择了(le)传统AB类(lei)(lei)功(gong)(gong)率(lv)(lv)(lv)放(fang)大电(dian)(dian)(dian)(dian)(dian)路(lu)(lu)(lu)(lu)，其(qi)(qi)功(gong)(gong)率(lv)(lv)(lv)器(qi)(qi)(qi)件(jian)选(xuan)择TI德州仪器(qi)(qi)(qi)旗下的(de)(de)TIP110，TIP117，两者器(qi)(qi)(qi)件(jian)参(can)数一致，为(wei)(wei)(wei)互补对称的(de)(de)大功(gong)(gong)率(lv)(lv)(lv)达灵(ling)顿(dun)管(guan)，其(qi)(qi)大输出(chu)(chu)交(jiao)(jiao)流(liu)可达2A。济南(nan)莱姆电(dian)(dian)(dian)(dian)(dian)流(liu)传感器(qi)(qi)(qi)案(an)例根据(ju)磁芯不同的(de)(de)结构，平行(xing)(xing)型(xing)磁通(tong)(tong)门传感器(qi)(qi)(qi)可分为(wei)(wei)(wei)单(dan)棒(bang)型(xing)、双棒(bang)型(xing)、管(guan)型(xing)、环型(xing)。

巨磁(ci)(ci)(ci)阻（GMR）效应(ying)在微小磁(ci)(ci)(ci)场(chang)(chang)测(ce)(ce)量领(ling)域(yu)实现了创新(xin)性的(de)(de)(de)改变(bian)，尤(you)其(qi)在利(li)用(yong)涡流传(chuan)感(gan)(gan)(gan)器(qi)进行无损检(jian)(jian)(jian)(jian)测(ce)(ce)方面(mian)取得(de)了很(hen)大的(de)(de)(de)进展(zhan)。巨磁(ci)(ci)(ci)阻传(chuan)感(gan)(gan)(gan)器(qi)具有低功耗、尺寸(cun)小、高(gao)灵敏度以及频率(lv)与(yu)灵敏度的(de)(de)(de)不相(xiang)关(guan)性等特(te)(te)点；同霍(huo)尔(er)传(chuan)感(gan)(gan)(gan)器(qi)相(xiang)同，巨磁(ci)(ci)(ci)阻芯片是(shi)(shi)传(chuan)感(gan)(gan)(gan)器(qi)的(de)(de)(de)主要组成部分，一般也容易受(shou)到环境(jing)中(zhong)磁(ci)(ci)(ci)场(chang)(chang)的(de)(de)(de)干扰，不适用(yong)于电(dian)(dian)磁(ci)(ci)(ci)环境(jing)复(fu)杂的(de)(de)(de)环境(jing)，对复(fu)杂波形(xing)电(dian)(dian)流也不能做出准确的(de)(de)(de)检(jian)(jian)(jian)(jian)测(ce)(ce)。磁(ci)(ci)(ci)通(tong)(tong)门(men)传(chuan)感(gan)(gan)(gan)器(qi)(Fluxgatecurrentsensor)，一开始主要用(yong)于弱磁(ci)(ci)(ci)场(chang)(chang)的(de)(de)(de)检(jian)(jian)(jian)(jian)测(ce)(ce)，比如地磁(ci)(ci)(ci)场(chang)(chang)检(jian)(jian)(jian)(jian)测(ce)(ce)、铁矿石检(jian)(jian)(jian)(jian)测(ce)(ce)、位移(yi)检(jian)(jian)(jian)(jian)测(ce)(ce)和管道泄漏检(jian)(jian)(jian)(jian)测(ce)(ce)等方面(mian)。随着这种技(ji)术的(de)(de)(de)发展(zhan)，磁(ci)(ci)(ci)通(tong)(tong)-2-门(men)传(chuan)感(gan)(gan)(gan)器(qi)广(guang)泛应(ying)用(yong)于太(tai)空探测(ce)(ce)和地质勘探中(zhong)。磁(ci)(ci)(ci)通(tong)(tong)门(men)电(dian)(dian)流传(chuan)感(gan)(gan)(gan)器(qi)的(de)(de)(de)结构类(lei)似霍(huo)尔(er)电(dian)(dian)流传(chuan)感(gan)(gan)(gan)器(qi)，是(shi)(shi)基于检(jian)(jian)(jian)(jian)测(ce)(ce)磁(ci)(ci)(ci)路的(de)(de)(de)饱(bao)和特(te)(te)性而设计(ji)的(de)(de)(de)。磁(ci)(ci)(ci)通(tong)(tong)门(men)电(dian)(dian)流传(chuan)感(gan)(gan)(gan)器(qi)采用(yong)高(gao)磁(ci)(ci)(ci)导率(lv)的(de)(de)(de)磁(ci)(ci)(ci)芯，通(tong)(tong)过磁(ci)(ci)(ci)芯的(de)(de)(de)交替(ti)饱(bao)和，产(chan)生的(de)(de)(de)感(gan)(gan)(gan)应(ying)电(dian)(dian)压和被(bei)测(ce)(ce)电(dian)(dian)流之间存在着一定的(de)(de)(de)数量关(guan)系，从而可以得(de)到被(bei)测(ce)(ce)电(dian)(dian)流。它实际上检(jian)(jian)(jian)(jian)测(ce)(ce)磁(ci)(ci)(ci)场(chang)(chang)的(de)(de)(de)变(bian)化，通(tong)(tong)过磁(ci)(ci)(ci)与(yu)电(dian)(dian)的(de)(de)(de)联系来(lai)得(de)到被(bei)测(ce)(ce)电(dian)(dian)流。近几年，随着软磁(ci)(ci)(ci)材料的(de)(de)(de)发展(zhan)和电(dian)(dian)子元器(qi)件(jian)的(de)(de)(de)革新(xin)，磁(ci)(ci)(ci)通(tong)(tong)门(men)电(dian)(dian)流传(chuan)感(gan)(gan)(gan)器(qi)的(de)(de)(de)性能不断提高(gao)，其(qi)应(ying)用(yong)范围不断扩大，受(shou)到越来(lai)越多的(de)(de)(de)关(guan)注。

IC为(wei)(wei)稳态(tai)(tai)充(chong)电(dian)(dian)(dian)电(dian)(dian)(dian)流(liu)，即在理想情况下t=∞时(shi)(shi)刻，通过激磁(ci)(ci)(ci)(ci)电(dian)(dian)(dian)感(gan)中的(de)稳态(tai)(tai)充(chong)电(dian)(dian)(dian)电(dian)(dian)(dian)流(liu)满(man)足(zu)IC=Vout/Rsum。τ1为(wei)(wei)铁芯C1回(hui)路放(fang)放(fang)电(dian)(dian)(dian)时(shi)(shi)间(jian)常数，τ1=l/Rsum。在t1时(shi)(shi)刻，铁芯C1工作点将由(you)负向(xiang)饱(bao)和(he)区C进入线性区A，此时(shi)(shi)激磁(ci)(ci)(ci)(ci)电(dian)(dian)(dian)流(liu)iex降低至负向(xiang)饱(bao)和(he)阈值电(dian)(dian)(dian)流(liu)I-th1，其满(man)足(zu)Ip=-Ip1，I-th1=I-th-βIp。可(ke)(ke)得t1时(shi)(shi)刻激磁(ci)(ci)(ci)(ci)电(dian)(dian)(dian)流(liu)终(zhong)值iex(t1)满(man)足(zu)：iex(t1)=一I-th1=一Ith+βIp1其中β=Np/N1，βIp1可(ke)(ke)以将理解为(wei)(wei)，一次电(dian)(dian)(dian)流(liu)在铁芯C1中产生(sheng)的(de)磁(ci)(ci)(ci)(ci)势折算到激磁(ci)(ci)(ci)(ci)绕组W1侧的(de)磁(ci)(ci)(ci)(ci)势大小。磁(ci)(ci)(ci)(ci)通门电(dian)(dian)(dian)流(liu)传感(gan)器也(ye)可(ke)(ke)以用于(yu)测量脉(mai)冲电(dian)(dian)(dian)流(liu)，监测和(he)控(kong)制脉(mai)冲电(dian)(dian)(dian)流(liu)的(de)状态(tai)(tai)。

根据(ju)前(qian)述假(jia)设(she)，Im<<IC且(qie)在线(xian)(xian)性(xing)区(qu)A激(ji)(ji)(ji)磁(ci)(ci)(ci)(ci)电(dian)(dian)(dian)(dian)(dian)(dian)(dian)感(gan)L远大于(yu)饱和区(qu)B、C激(ji)(ji)(ji)磁(ci)(ci)(ci)(ci)电(dian)(dian)(dian)(dian)(dian)(dian)(dian)感(gan)l，因(yin)此τ2>>τ1，因(yin)此式(shi)（2－31）进(jin)(jin)一(yi)(yi)步化(hua)(hua)(hua)简得(de)(de)：T=TP+TN=(IC一(yi)(yi)4Ith(I)th(β(IC)Ip(一(yi)(yi))I(h)(τ2Ith(一(yi)(yi))Ip1)（2－32）根据(ju)式(shi)（2－27）（2－30）（2－32）可(ke)求(qiu)得(de)(de)激(ji)(ji)(ji)磁(ci)(ci)(ci)(ci)电(dian)(dian)(dian)(dian)(dian)(dian)(dian)压信(xin)号Vex在一(yi)(yi)个周(zhou)波内(nei)平均(jun)电(dian)(dian)(dian)(dian)(dian)(dian)(dian)压Vav满足：Vav=Vout=ICβ一(yi)(yi)II(p1)thVout（2－33）根据(ju)前(qian)述假(jia)设(she)Ith<<IC可(ke)进(jin)(jin)一(yi)(yi)步对(dui)式(shi)（2-33）分(fen)(fen)(fen)母进(jin)(jin)行(xing)化(hua)(hua)(hua)简，带入下列(lie)表达式(shi)IC=Vout/Rsum，β=Np/N1，iex=Vout/(RC+RS)及Rsum=RC+RS可(ke)进(jin)(jin)一(yi)(yi)步得(de)(de)激(ji)(ji)(ji)磁(ci)(ci)(ci)(ci)电(dian)(dian)(dian)(dian)(dian)(dian)(dian)流(liu)(liu)(liu)平均(jun)值iav满足：iav=一(yi)(yi)（2－34）式(shi)（2－34）即为(wei)平均(jun)电(dian)(dian)(dian)(dian)(dian)(dian)(dian)流(liu)(liu)(liu)模型基于(yu)磁(ci)(ci)(ci)(ci)化(hua)(hua)(hua)曲线(xian)(xian)的(de)分(fen)(fen)(fen)段线(xian)(xian)性(xing)化(hua)(hua)(hua)模型所得(de)(de)激(ji)(ji)(ji)磁(ci)(ci)(ci)(ci)电(dian)(dian)(dian)(dian)(dian)(dian)(dian)流(liu)(liu)(liu)与一(yi)(yi)次(ci)电(dian)(dian)(dian)(dian)(dian)(dian)(dian)流(liu)(liu)(liu)之(zhi)间的(de)定量关(guan)系(xi)式(shi)，即自(zi)激(ji)(ji)(ji)振(zhen)荡(dang)磁(ci)(ci)(ci)(ci)通(tong)门(men)电(dian)(dian)(dian)(dian)(dian)(dian)(dian)路激(ji)(ji)(ji)磁(ci)(ci)(ci)(ci)电(dian)(dian)(dian)(dian)(dian)(dian)(dian)流(liu)(liu)(liu)平均(jun)值与一(yi)(yi)次(ci)电(dian)(dian)(dian)(dian)(dian)(dian)(dian)流(liu)(liu)(liu)之(zhi)间呈线(xian)(xian)性(xing)比例关(guan)系(xi)，且(qie)激(ji)(ji)(ji)磁(ci)(ci)(ci)(ci)电(dian)(dian)(dian)(dian)(dian)(dian)(dian)流(liu)(liu)(liu)平均(jun)值正(zheng)负与一(yi)(yi)次(ci)电(dian)(dian)(dian)(dian)(dian)(dian)(dian)流(liu)(liu)(liu)方向相(xiang)关(guan)。自(zi)激(ji)(ji)(ji)振(zhen)荡(dang)磁(ci)(ci)(ci)(ci)通(tong)门(men)电(dian)(dian)(dian)(dian)(dian)(dian)(dian)路可(ke)以识别(bie)电(dian)(dian)(dian)(dian)(dian)(dian)(dian)流(liu)(liu)(liu)方向且(qie)激(ji)(ji)(ji)磁(ci)(ci)(ci)(ci)电(dian)(dian)(dian)(dian)(dian)(dian)(dian)流(liu)(liu)(liu)平均(jun)值与一(yi)(yi)次(ci)电(dian)(dian)(dian)(dian)(dian)(dian)(dian)流(liu)(liu)(liu)量值线(xian)(xian)性(xing)相(xiang)关(guan)，这(zhei)便为(wei)自(zi)激(ji)(ji)(ji)振(zhen)荡(dang)磁(ci)(ci)(ci)(ci)通(tong)门(men)电(dian)(dian)(dian)(dian)(dian)(dian)(dian)路测量交流(liu)(liu)(liu)及交直(zhi)流(liu)(liu)(liu)提供了理论上的(de)可(ke)行(xing)性(xing)，现对(dui)IP为(wei)交直(zhi)流(liu)(liu)(liu)电(dian)(dian)(dian)(dian)(dian)(dian)(dian)流(liu)(liu)(liu)时，自(zi)激(ji)(ji)(ji)振(zhen)荡(dang)磁(ci)(ci)(ci)(ci)通(tong)门(men)电(dian)(dian)(dian)(dian)(dian)(dian)(dian)路测量原理进(jin)(jin)行(xing)分(fen)(fen)(fen)析。电(dian)(dian)(dian)(dian)(dian)(dian)(dian)阻值的(de)变(bian)化(hua)(hua)(hua)：霍尔电(dian)(dian)(dian)(dian)(dian)(dian)(dian)流(liu)(liu)(liu)传感(gan)器(qi)的(de)内(nei)部电(dian)(dian)(dian)(dian)(dian)(dian)(dian)阻值可(ke)能会受到(dao)温度、湿度、机械应力和时间等(deng)因(yin)素(su)的(de)影(ying)响而发生(sheng)变(bian)化(hua)(hua)(hua)。无锡化(hua)(hua)(hua)成分(fen)(fen)(fen)容电(dian)(dian)(dian)(dian)(dian)(dian)(dian)流(liu)(liu)(liu)传感(gan)器(qi)价(jia)格大全

抗电磁干(gan)扰(rao)：由于磁通门传感器(qi)是(shi)通过测量磁通量来间接测量电流(liu)的，因此它可以抵抗电磁干(gan)扰(rao)的影(ying)响(xiang)。北京漏电保护电流(liu)传感器(qi)单价

电(dian)(dian)流(liu)(liu)(liu)(liu)(liu)传(chuan)(chuan)感器(qi)技术(shu)方(fang)案(an)差异分(fen)析随着电(dian)(dian)力(li)电(dian)(dian)子技术(shu)应用(yong)的(de)逐步发展(zhan)，人(ren)们(men)对电(dian)(dian)流(liu)(liu)(liu)(liu)(liu)传(chuan)(chuan)感器(qi)的(de)性能提(ti)出(chu)了(le)(le)更高的(de)要求，所以电(dian)(dian)流(liu)(liu)(liu)(liu)(liu)传(chuan)(chuan)感器(qi)迅速发展(zhan)起来。为了(le)(le)满足电(dian)(dian)流(liu)(liu)(liu)(liu)(liu)传(chuan)(chuan)感器(qi)在不(bu)同(tong)(tong)领(ling)域中的(de)技术(shu)需求，产业界开发出(chu)了(le)(le)各(ge)种类(lei)型电(dian)(dian)流(liu)(liu)(liu)(liu)(liu)传(chuan)(chuan)感器(qi)，如霍尔(er)电(dian)(dian)流(liu)(liu)(liu)(liu)(liu)传(chuan)(chuan)感器(qi)、罗氏(shi)线圈、巨磁阻电(dian)(dian)流(liu)(liu)(liu)(liu)(liu)传(chuan)(chuan)感器(qi)、电(dian)(dian)流(liu)(liu)(liu)(liu)(liu)互(hu)感器(qi)、分(fen)流(liu)(liu)(liu)(liu)(liu)电(dian)(dian)阻以及磁通门电(dian)(dian)流(liu)(liu)(liu)(liu)(liu)传(chuan)(chuan)感器(qi)等。小编(bian)在7月份(fen)在无锡纳吉伏(fu)公(gong)司的(de)网站上对这些(xie)不(bu)同(tong)(tong)电(dian)(dian)流(liu)(liu)(liu)(liu)(liu)传(chuan)(chuan)感器(qi)的(de)技术(shu)路线差异进(jin)行了(le)(le)初步分(fen)析分(fen)析，下面详细介绍上述几种常(chang)见的(de)电(dian)(dian)流(liu)(liu)(liu)(liu)(liu)传(chuan)(chuan)感器(qi)。

霍(huo)(huo)尔(er)(er)(er)效应(ying)传(chuan)(chuan)感(gan)(gan)(gan)器是(shi)基(ji)于(yu)(yu)霍(huo)(huo)尔(er)(er)(er)效应(ying)的(de)磁(ci)场(chang)传(chuan)(chuan)感(gan)(gan)(gan)器。它(ta)是(shi)一(yi)种隔离的(de)非(fei)侵入式(shi)设 备，可(ke)(ke)同时应(ying)用于(yu)(yu)直(zhi)流(liu)和交流(liu)电(dian)流(liu)检(jian)测，通常(chang)高(gao)达数百千(qian)赫兹。由(you)于(yu)(yu)其简单(dan)的(de)结构，与(yu)微电(dian)子器件的(de)兼容性(xing)，霍(huo)(huo)尔(er)(er)(er)器件可(ke)(ke)以单(dan)片集成到(dao)完全集成的(de)磁(ci)传(chuan)(chuan)感(gan)(gan)(gan)器中。霍(huo)(huo)尔(er)(er)(er)传(chuan)(chuan)感(gan)(gan)(gan)器可(ke)(ke)以使用常(chang)规(gui)的(de)CMOS技术(shu)制造。但(dan)是(shi)，它(ta)通常(chang)比电(dian)流(liu)互感(gan)(gan)(gan)器或(huo)Rogowski传(chuan)(chuan)感(gan)(gan)(gan)器昂贵(gui)。尽管霍(huo)(huo)尔(er)(er)(er)传(chuan)(chuan)感(gan)(gan)(gan)器可(ke)(ke)以测量直(zhi)流(liu)电(dian)流(liu)，但(dan)由(you)于(yu)(yu)铁(tie)芯饱和，霍(huo)(huo)尔(er)(er)(er)传(chuan)(chuan)感(gan)(gan)(gan)器通常(chang)具有有限的(de)峰值电(dian)流(liu)，并且具有有限的(de)带(dai)宽（<1MHz）。另外，它(ta)对外部磁(ci)场(chang)非(fei)常(chang)敏感(gan)(gan)(gan)，霍(huo)(huo)尔(er)(er)(er)传(chuan)(chuan)感(gan)(gan)(gan)器的(de)温度稳定性(xing)和时间(jian)稳定性(xing)非(fei)常(chang)不好。霍(huo)(huo)尔(er)(er)(er)效应(ying)传(chuan)(chuan)感(gan)(gan)(gan)器主要在闭环模式(shi)下工作，以实现更高(gao)的(de)精(jing)度和更宽的(de)动态(tai)范围(wei)。北京漏电(dian)保护电(dian)流(liu)传(chuan)(chuan)感(gan)(gan)(gan)器单(dan)价

本文来自海(hai)润达物(wu)联科技(ji)有(you)限责任公司：//qfd1mz.cn/Article/1b08699912.html