TBC-EC系列霍尔电流传感器
霍尔电流传感器原理图

霍尔电流传感器原理图模块名称:闭环霍尔电流传感器模块参数:测量频率: 0~100KHz测量范围: 1A~40,000A精度: 0.2%~1%相应时间: <1uS线性度: 0.1%无测量插入损耗测量AC,DC及脉冲电流原边电流与副边输出信号高度隔离模块原理图:工作原理:被测电流In流过导体产生的磁场,由通过霍尔元件输出信号控制的补偿电流Im流过次级线圈产生的磁场补偿,当原边与副边的磁场达到平衡时,其补偿电流Im即可精确反映原边电流In值。
霍尔电流传感器型号说明1、前三个字母表示霍尔效应电流传感器分类:DCH表示开环,直放式霍尔效应电流传感器,输出多为电压(V)。
DBC表示闭环,磁平衡霍尔效应电流传感器,输出多为电流(mA);也有少部分转换成电压(V)输出。
DVC表示闭环,霍尔效应电压传感器,输出形式同上。
DDC表示直流小电流传感器,磁调制原理,输出形式同上。
DZ表示转换器。
2、中间数字表示上述传感器的额定值电流传感器为安培(A),电压传感器为安匝(IT)或最高工作电压(V)。
一、后辍字母表示内孔及安装固定方式矩形窗口(内孔),螺钉固定,插座输出,不加字母。
圆形内孔用O表示,线路板安装用P表示。
单电源用D表示。
可拆卸结构用K表示。
二、特殊说明,用通用技术语言表示。
我公司大规格(2KA以上)霍尔电流传感器与国内外同类产品比较主要特点如下:1、磁路采用去剩磁技术措施,磁失调<0.05%。
一般产品磁失调达百分级,已接触到国外公司产品也不例外。
部分产品由于过载产生剩磁,可使产品报废。
2、本产品对外磁场干扰,采用外磁场抵消法;双路磁路使干扰磁场相对抵消。
而信号磁场设计在强磁场状态,外磁场比信号磁场弱,影响可忽略。
3、电路采用双恒温措施,减少温漂,提高稳定度。
大型电流传感器采用多霍尔对称部局、强信号磁场,大大减轻了霍尔元件的不等位影响。
上述技术措施,本公司大型电流传感具有如下特点:(1)高准确度、高稳定性、高可靠性,可适用任何工作现场。
互感器选型手册

1.1 概述............................................................................................................................................5 1.2 技术指标....................................................................................................................................5 1.3 选型说明....................................................................................................................................6 1.4 产品规格....................................................................................................................................7
1.4.9.1 AKH-L 零序电流互感器.....................................................................................47 1.4.9.2 AKH-3.3/P-φ型中压电动机保护专用电流互感器......................................49 1.4.9.3 JDG4-0.5 电压互感器.......................................................................................49 1.4.9.4 AMZK 系列电流互感器.......................................................................................50 1.5 安装方法...................................................................................................................................51 1.6 附录...........................................................................................................................................55 1.6.1 附录 1............................................................................................................................55 1.6.2 附录 2............................................................................................................................56 1.6.3 附录 3............................................................................................................................57 2. 霍尔传感器.......................................................................................................................................58 2.1 开环霍尔电流传感器..............................................................................................................58 2.2 闭环霍尔电流传感器..............................................................................................................62 2.3 直流漏电流传感器...................................................................................................................63 2.4 直流电压传感器......................................................................................................................65 3.BR 系列罗氏线圈变送器....................................................................................................................67 4.BA 系列交流电流传感器....................................................................................................................69 5.BM 系列模拟信号隔离器....................................................................................................................72 6.BD 系列电力变送器............................................................................................................................76 7. 典型案例...........................................................................................................................................82 8. 获得证书...........................................................................................................................................85
闭环霍尔电流传感器 结构

闭环霍尔电流传感器结构摘要:1.闭环霍尔电流传感器的概念与原理2.闭环霍尔电流传感器的结构3.闭环霍尔电流传感器的工作过程4.闭环霍尔电流传感器的应用领域5.闭环霍尔电流传感器与开环霍尔电流传感器的区别正文:闭环霍尔电流传感器是一种基于霍尔效应原理的电流检测设备,它能够对电路中的电流进行精确测量。
相较于开环霍尔电流传感器,闭环霍尔电流传感器具有更高的精度和线性度。
下面我们将详细介绍闭环霍尔电流传感器的结构、工作过程以及应用领域。
1.闭环霍尔电流传感器的概念与原理闭环霍尔电流传感器利用霍尔效应原理,通过原边电流产生的磁场与副边电流产生的磁场相抵消,使霍尔器件处于检测零磁通的工作状态。
这样,原边电流与副边电流之比等于匝数比的倒数,从而实现对原边电流的精确测量。
2.闭环霍尔电流传感器的结构闭环霍尔电流传感器主要由原边绕组、副边绕组、磁芯和霍尔元件组成。
原边绕组通入被测电流,产生磁场;副边绕组由电子电路产生补偿电流,产生相反的磁场;磁芯用于集中磁场;霍尔元件则用于检测磁通。
3.闭环霍尔电流传感器的工作过程当原边电流通过磁芯时,会产生一个磁场。
这个磁场会穿过副边绕组,并在其中产生一个感应电动势。
通过调整副边绕组的电阻,使得副边产生的补偿电流与原边电流产生的磁场相抵消,从而使磁芯中的磁通为零。
这时,霍尔元件检测到的磁通为零,从而实现对原边电流的精确测量。
4.闭环霍尔电流传感器的应用领域闭环霍尔电流传感器广泛应用于工业自动化、电动汽车、电力设备、交通运输等领域,用于测量电路中的电流,为系统的控制和保护提供精确的数据支持。
5.闭环霍尔电流传感器与开环霍尔电流传感器的区别闭环霍尔电流传感器与开环霍尔电流传感器的主要区别在于结构和原理。
开环霍尔电流传感器的输出正比于霍尔片垂直的磁感应强度,而磁感应强度除了与被测电流相关之外,还与铁芯的磁导率相关,因此其精度较低。
TBC-DS5_霍尔电流传感器

TBC-DS5 多量程闭环型霍尔电流传感器的初、次级之间是绝缘的,可用于测量直流、交流和脉冲电流。
TBC-DS5 series multi-range current sensor is a closed loop device based on the measuring principle of the hall effect and null balance method, with a galvanic isolation between primary and secondary circuit. It provides accurate electronic measurement of DC, AC or pulsed currents.●交流变速驱动器AC variable speed drives●直流电机驱动静态转换器Static converters for DC motor drives ●通讯电源Battery supplied applications●不间断电源UPSUninterruptible Power Supplies (UPS) ●开关电源Switched Mode Power Supplies (SMPS)1.当待测电流从传感器穿过,即可在输出端测得电压大小。
(注意:错误的接线可能导致传感器损坏)When the current will be measured goes through a sensor, the voltage will be measured at the output end.(Note: The false wiring may result in the damage of the sensor)2.可按用户需求定制不同额定输入电流和输出电压的传感器。
Custom design in the different rated input current and the output voltage are available.●UL94-V0.●EN60947-1:2004●IEC60950-1:2001●EN50178:1998●SJ 20790-2000脉冲电流信号响应特性抗脉冲电压干扰特性Pulse current signal response characteristic Effects of impulse noise输入信号( Input signal )输出信号( Output signal )输出电压IN213456OUT。
CrossChip Microsystems CC6904 单芯片霍尔效应电流传感器说明书

CC6904单芯片霍尔效应电流传感器5A/10A/20A/30A 系列概述CC6904是一款高性能单端输出的线性电流传感器,可以更为有效的为交流(AC )或者直流(DC )电流检测方案,广泛应用于工业,消费类及通信类设备。
CC6904内部集成了一颗高精度,低噪声的线性霍尔电路和一根低阻抗的主电流导线。
当采样电流流经主电流导线,其产生的磁场在霍尔电路上感应出相应的电信号,经过信号处理电路输出电压信号,使得产品更易于使用。
线性霍尔电路采用先进的BiCMOS 制程生产,包含了高灵敏度霍尔传感器,霍尔信号预放大器,高精度的霍尔温度补偿单元,振荡器,动态失调消除电路和放大器输出模块。
在无磁场的情况下,静态输出为50%VCC 。
在电源电压3.3V 条件下,OUT 可以在0.2~3.1V 之间随磁场线性变化,线性度可达0.4%。
CC6904内部集成的动态失调消除电路使IC 的灵敏度不受外界压力和IC 封装应力的影响。
CC6904提供SOP8封装,工作温度范围-40~125°C 。
特性◆静态共模输出点为50%VCC ◆测量范围宽,5A/10A/20A/30A◆1MHz 斩波频率,高带宽,低噪声,单端模拟输出◆导线引脚到信号引脚有2000V 的安全隔离电压◆低功耗◆常温误差1%,全温误差3%◆温度稳定性好,内部采用了芯进专利的霍尔信号放大电路和温度补偿电路◆抗干扰能力强◆抗机械应力,磁参数不会因为受外界压力而偏移◆ESD (HBM)6000V应用◆电机控制◆负载监测系统◆开关电源◆过流故障保护功能框图订购信息产品名称灵敏度(CC6904SO-05A CC6904SO-10A CC6904SO-20A管脚定义12345678IP+IP+IP-IP-VCC OUT NCGNDSOP8封装极限参数推荐工作环境参数电源电压环境温度直流电流容量参数符号电气特性零电流输出温度系数ΔV OUT(Q)灵敏度温度系数ΔSens典型应用电路典型应用过流故障检测器电流峰值监测应用曲线&波形(若无特别指明,V CC =3.3V @25°C)V OUT vs.IP (正向电流上升沿响应)(20A )V OUT vs.IP (正向电流下降沿响应)(20A )V OUT vs.IP (负向电流上升沿响应)(20A )V OUT vs.IP (负向电流下降沿沿响应)(20A )CH2:OUT CH4:IPCH2:OUT CH4:IPCH2:OUT CH4:IPCH2:OUT CH4:IPt D 响应时间(20A )静态电流vs.VCC 静态电流vs.Ta20A 系列V OUT(Q)vs.Ta(20A)V OUT vs.IP (20A)CH2:OUT CH4:IP468V OUT error vs.Ta(20A)Sens error vs.Ta(20A)封装信息SOP8封装注意:1.所有尺寸单位均为毫米。
霍尔电流传感器测试要求

霍尔电流传感器 AHKC-EKB检测案例
安科瑞电气测试中心对霍尔电流传感器产品按照表1所列的标准进行整机试验一:下面是我中心的测试参照规范:
表1 测试依据
二:检测项目表
检测项目表2
三:按照企业标准中的试验等级及国家标准中的试验要求和试验方法对产品进行测试,结合本测试中心现有开展项目进行。
期间出现的产品性能异常均及时反馈并及时进行整改,提高了产品的可靠性能,为新产品定型做好了充分的准备。
通过上述我们可以得到,产品在本中心进行相关测试时,检测项目能够按照较全面的覆盖产品的国家标准所要求的检测项目,提前改进,提高产品的质量,降低企业费用。
作者简介:
高杨(1990-),女,本科,就职于江苏安科瑞电器制造有限公司测试中心,致力于于气候环境试验、机械环境试验、材料的阻燃耐热试验等试验研究。
手机:188******** QQ:2881068601。
闭环霍尔电流传感器的工作原理介绍

霍尔电流传感器原理图模块名称:闭环霍尔电流传感器模块参数:测量频率: 0~100KHz测量范围: 1A~40,000A精度: 0.2%~1%相应时间: <1uS线性度: 0.1%无测量插入损耗测量AC,DC及脉冲电流原边电流与副边输出信号高度隔离模块原理图:工作原理:被测电流In流过导体产生的磁场,由通过霍尔元件输出信号控制的补偿电流Im流过次级线圈产生的磁场补偿,当原边与副边的磁场达到平衡时,其补偿电流Im即可精确反映原边电流In值。
闭环霍尔电流传感器的工作原理介绍闭环霍尔电流传感器是利用霍尔器件为核心敏感元件用于隔离检测电流的模块化产品,它的工作原理是霍尔磁平衡式的。
当电流流过一根长的直导线时,在导线周围产生磁场,磁场的大小与流过导线的电流大小成正比,这一磁场可以通过软磁材料来聚集,然后用霍尔器件进行检测,由于磁场的变化与霍尔器件的输出电压信号有良好的线形关系,因此可利用霍尔器件的测得的输出信号,直接反应出导线中的电流大小:I ∝ B ∝ VH (2)式中:B为导线通电流后产生的磁感应强度;I为通过导线中的电流;VH为霍尔器件在磁场B中产生的霍尔电压。
当选择适当的比例系数,上述关系可以表示为等式。
对于霍尔输出电压信号VH的处理,人们设计了许多种电路,但总体来讲可分为两类,一类为开环霍尔电流传感器;另一类为闭环霍尔电流传感器。
闭环霍尔电流传感器的工作原理是磁平衡式的,即原边电流(IN)所产生的磁场,通过一个副边线圈的电流(IM)所产生的磁场进行补偿,使霍尔器件始终处于检测零磁通的工作状态。
当原副边补偿电流产生的磁场在磁芯中达到平衡时:N×IN= n×IM (3)式中:N为原边线圈的匝数;IN为原边电流;n为副边线圈的匝数;IM为副边补偿电流。
由上式看出,当已知传感器原边和副边线圈匝数时,通过测量副边补偿电流IM的大小,即可推算出原边电流IN的值,从而实现了原边电流的隔离测量。
宇波模块

电源 技术领 域应用
宇波模块 宇波模块 宇波模块
负载
AC输入
DC DC
AC电流测量 AC电压测量
整流
PMW转换
整流
DC电流测量 DC电压测量
典型应用:
-通信电源系统 -UPS电源 -铁路信号电源系统 -电力输变电监测系统 -激光电源系统 -工业控制系统电源 -高频加热电源 2006年底,我国合肥建成并投入试运 行的核聚变装置-全超导托卡马克EAST系 统,43台CHB-KA型3KA~20KA霍尔电流传感 器被应用于该装置的供电控制系统,监测 控制供给核聚变装置的能量。 托卡马克EAST装置是为了研究并有效 控制“氢弹爆炸”过程的核聚变反应实验 系统,科学家称其为“人造太阳”,因为 它可以像太阳一样,为人类提供无限、清 洁和安全的能源。
9 13-17
产品认证
宇波模块的设计、生产及 服务 过程通过ISO9001:2000 国际质量管理体系认证。
5A~3000A(AC) 50A~3000A(DC) 1A~300A(AC) 1A~300A(DC)
13 13 17 17 15-16
产品的质量保证
宇波模块 将严格按照ISO9001:2000国际 质量 认证标准 进行设计、生产及服务。我们承诺对由于设计、原材料 及生产工艺造成的产品早期失效负责,产品提供自购买 日期起5年的质量保证。
工作原理:
霍尔磁补偿原理—被测电流IN 流过导体产生的磁场,由通过霍尔元件 输 出信号控制的补偿电流IM 流过次级线圈产生的磁场补偿,当原边与副边 的磁场达到平衡时,其补偿电流IM即可精确反映原边电流IN值。
CHB-50SF CHB-50TF CHB-100A CHB-100P CHB-100S CHB-100T CHB-100SE CHB-100SF CHB-100TF
霍尔TBC-25-50C04

初级引脚 连 接
22
1
4
- + O
注意: 初级安装孔为Φ 次级安装孔为Φ
, 。
接线图 初 1 2 3 4
级
初级接法 IPN(A) 25, 50 12, 25 8, 6, 16 12
峰值电流 IP(A) 55, 100 27, 50 18, 33 13, 25
Байду номын сангаас
输出电流 Is(mA) 25, 50 24, 50 24, 48 24, 48
KEN
R
南京托肯电子科技有限公司 TBC25C04/TBC50C04 型霍尔电流传感器
TBC25C04/TBC50C04 型电流传感器的初、次级之间是绝缘的,可用于测量直流、交流和脉冲电流. 电参数 TBC25C04 25 0~±55 54~360(±15V) 25±0.5% ±15±5% 1-2-3-4:1000 ±0.15 ±0.5 <1 ≤0.1 5 >50 DC…200 40 -40~+85 -40~+125 TBC50C04 50 0~±100 68~180(±15V) 50±0.5% ±15±5% 1-2-3-4:1000 ±0.15 ±0.5 <1 ≤0.1 5 >50 DC…200 30 -40~+85 -40~+125
额定输入有效值电流 测量电流范围 负载阻抗 (额定电流时) 次级额定有效值电流 电源电压 匝 比 零电流失调 电流失调温漂 -40℃~+85℃ 响应时间 线性度 绝缘电压 50(60)HZ,1min di/dt 跟随精度 带宽(-3dB) 次级线圈内阻 @70℃ 工作温度 储存温度 结构参数
A A Ω mA V mA mA µs %FS KV A/μ s KHz Ω ℃ ℃
爱乐高ACS706ELC-05C双向1.5mΩ霍尔效应线性电流传感器IC电路使用手册说明书

NOTE: For detailed information on purchasing options, contact your local Allegro field applications engineer or sales representative.Allegro MicroSystems, Inc. reserves the right to make, from time to time, revisions to the anticipated product life cycle plan for a product to accommodate changes in production capabilities, alternative product availabilities, or market demand. The information included herein is believed to be accurate and reliable. However, Allegro MicroSystems, Inc. assumes no respon-sibility for its use; nor for any infringements of patents or other rights of third parties which may result from its use.Recommended Substitutions:For existing customer transition, and for new customers or new appli-cations, refer to the ACS712.Bidirectional 1.5 mΩ Hall Effect Based Linear Current Sensor ICwith V oltage Isolation and 15 A Dynamic RangeACS706ELC-05CDate of status change: December 26, 2006These parts are in production but have been determined to beNOT FOR NEW DESIGN. This classification indicates that sale of this device is currently restricted to existing customer applications. The device should not be purchased for new design applications because obsolescence in the near future is probable. Samples are no longer available.Not for New DesignFeatures and Benefits• Small footprint, low-profile SOIC8 package• 1.5 m Ω internal conductor resistance• 1600 V RMS minimum isolation voltage between pins 1-4 and 5-8• 4.5 to 5.5 V, single supply operation • 50 kHz bandwidth• 133 mV/A output sensitivity and 15 A dynamic range • Output voltage proportional to ac and dc currents • Factory-trimmed for accuracy• Extremely stable output offset voltage • Near-zero magnetic hysteresis• Ratiometric output from supply voltageThe Allegro ACS706 family of current sensor ICs provides economical and precise solutions for current sensing in industrial, automotive, commercial, and communications systems. The device package allows for easy implementation by the customer. Typical applications include motor control, load detection and management, switch-mode power supplies, and overcurrent fault protection.The device consists of a precision, low-offset linear Hall circuit with a copper conduction path located near the surface of the die. Applied current flowing through this copper conduction path generates a magnetic field which the Hall IC converts into a proportional voltage. Device accuracy is optimized through the close proximity of the magnetic signal to the Hall transducer. A precise, proportional voltage is provided by the low-offset, chopper-stabilized BiCMOS Hall IC, which is programmed for accuracy at the factory.The output of the device has a positive slope (>V CC / 2) when an increasing current flows through the primary copper conduction path (from pins 1 and 2, to pins 3 and 4), which is the path used for current sampling. The internal resistance of this conductive path is typically 1.5 m Ω, providing low power loss. The thickness of the copper conductor allows survival of the device at up to 5× overcurrent conditions. The terminals of the conductive path are electrically isolated from the signal leads (pins 5 through 8). This allows the ACS706 to be used in applications requiring electrical isolation without the use of opto-isolators or other costly isolation techniques.The ACS706 is provided in a small, surface mount SOIC8 package. The leadframe is plated with 100% matte tin, which is compatible with standard lead (Pb) free printed circuit board assembly processes. Internally, the flip-chip uses high-temperature Pb-based solder balls, currently exempt from RoHS. The device is fully calibrated prior to shipment from the factory.Use the following complete part number when ordering:Part NumberPackageACS706ELC-05CSOIC8 surface mountTÜV AmericaCertificate Number:U8V 04 12 54214 005AB S O L UTE MAX I M UM RAT I NGSSupply V oltage, V CC ..........................................16 V Reverse Supply V oltage, V RCC ........................–16 V Output V oltage, V OUT ........................................16 V Reverse Output V oltage, V ROUT ......................–0.1 V Output Current Source, I OUT(Source) ................. 3 mA Output Current Sink, I OUT(Sink) .......................10 mA Maximum Transient Sensed Current *, I R(max) ...100 A Operating Temperature, Maximum Junction, T J(max).......................165°C Storage Temperature, T S ......................–65 to 170°C*Junction Temperature, T J < TJ(max).*100 total pulses, 250 ms duration each, applied at a rate of1 pulse every 100 seconds.Nominal Operating Temperature, T A Range E ............................................–40 to 85ºC Overcurrent Transient Tolerance*, I P ................60 ABidirectional 1.5 m Ω Hall Effect Based Linear Current Sensorwith Voltage Isolation and 15 A Dynamic RangePackage LCPin 1: IP+Pin 2: IP+Pin 3: IP–Pin 4: IP–Pin 8: VCC Pin 7: VOUTPin 6: N.C.Pin 5: GNDPins 6 and 7 are internally connected in shipping product. For compatibility with future devices, leave pin 6 floating.Functional Block Diagram0.1 μFPERFORMANCE CHARACTERISTICS, over operating ambient temperature range, unless otherwise specifiedPropagation Time t PROP I P =±5 A, T A = 25°C– 3.15–μs Response Time t RESPONSE I P =±5 A, T A = 25°C–6–μs Rise Time t r I P =±5 A, T A = 25°C–7.45–μs Frequency Bandwidth f–3 dB, T A = 25°C; I P is 10 A peak-to-peak; no external filter–50–kHzSensitivity Sens Over full range of I P , I P applied for 5 ms; T A = 25°C–133–mV/A Over full range of I P , I P applied for 5 ms124–142mV/ANoise V NOISE Peak-to-peak, T A = 25°C, no external filter–90–mV Root Mean Square, T A = 25°C, no external filter–16–mVLinearity E LIN Over full range of I P , I P applied for 5 ms–±1±4.7% Symmetry E SYM Over full range of I P , I P applied for 5 ms98100104.5% Zero Current Output Voltage V OUT(Q)I P = 0 A, T A = 25°C–V CC / 2–VElectrical Offset Voltage V OE I P = 0 A, T A = 25°C–15–15mV I P = 0 A–65–65mVMagnetic Offset Error I ERROM I P = 0 A, after excursion of 5 A–±0.01±0.05ATotal Output Error1E TOT I P =±5 A, I P applied for 5 ms;T A = 25°C–±1.5–% I P = ±5 A, I P applied for 5 ms––±12.5%Characteristic Symbol Test Conditions Min.Typ.Max.Units ELECTRICAL CHARACTERISTICS, over operating ambient temperature range unless otherwise specifiedOptimized Accuracy Range I P–5–5A Linear Sensing Range I R–15–15A Supply Voltage V CC 4.5 5.0 5.5V Supply Current I CC V CC = 5.0 V, output open5810mA Output Resistance R OUT I OUT = 1.2 mA–12ΩOutput Capacitance Load C LOAD VOUT to GND––10nF Output Resistive Load R LOAD VOUT to GND 4.7––kΩPrimary Conductor Resistance R PRIMARY T A = 25°C– 1.5–mΩRMS Isolation Voltage V ISORMS Pins 1-4 and 5-8; 60 Hz, 1 minute16002500–V DC Isolation Voltage V ISODC–5000–V OPERATING CHARACTERISTICSTHERMAL CHARACTERISTICS2,3, T A = –40°C to 125°C, V CC = 5 V unless otherwise specified–Value–UnitsJunction-to-Lead Thermal Resistance RθJLMounted on the Allegro ASEK 70x evaluation board; additionalinformation about reference boards and tests is available on theAllegro Web site–5–°C/WJunction-to-Ambient Thermal Resistance RθJAMounted on the Allegro ASEK 70x evaluation board; additionalinformation about reference boards and tests is available on theAllegro Web site–41–°C/W1Percentage of I P, with I P = 5 A. Output filtered. Up to a 2.0% shift in E TOT may be observed at end-of-life for this device.2 The Allegro evaluation board has 1500 mm2 of 2 oz. copper on each side, connected to pins 1 and 2, and to pins3 and 4, with thermal vias connect-ing the layers. Performance values include the power consumed by the PWB. Further details on the board are available from the ACS704 Frequently Asked Questions document on our website. Further information about board design and thermal performance also can be found on pages 16 and 17 of this datasheet.3RθJA values shown in this table are typical values, measured on the Allegro evaluation board. The actual thermal performance depends on the board design, the airflow in the system, and thermal interactions between the device and surrounding components through the PCB and the ambient air. To improve thermal performance, see our applications material on the Allegro Web site.Typical Performance Characteristics-50-25255075100125150Supply Current versus Ambient TemperatureV CC = 5 VT A (°C)I C C (m A )4.54.64.74.84.95 5.15.25.35.45.5V CC (V)I C C (m A )8.008.058.108.158.208.258.308.358.408.458.50Supply Current versus Applied VCC11.01.52.02.53.03.54.0-9-8-7-6-5-4-3-2-10123456789V O U T (V )Output Voltage versus Primary CurrentV CC = 5 VI P (A)110115120125130135140145150160S e n s (m V /A )-9-8-7-6-5-4-3-2-1123456789I P (A)Sensitivity versus Primary CurrentV CC = 5 V-50-250255075100125150V O U T (Q ) (V )2.4702.5802.4902.5002.5102.5202.530Zero Current Output Voltage vs. Ambient TemperatureT A (°C)I P = 0 AZero Current Output Currrent versus Ambient Temperature(Data in above chart converted to amperes)I V O U T (Q ) (A )–0.3–0.2–0.10.10.20.3–50–25255075100125150T A (°C)V O M (m A )-1.0-0.8-0.6-0.4-0.200.20.40.60.81.0-50-25255075150100125T A (°C)Magnetic Offset Error versus Ambient TemperatureV CC = 5 V; I P= 0 A, after excursion to 5 A-50-25255075150100125T A (°C)00.51.01.52.02.53.0E L I N (%)Nonlinearity versus Ambient TemperatureV CC = 5 V I P= 5 ATypical Peak-to-Peak Noise of ACS706ELC-05C at T A =25°CStep Response of ACS706ELC-05C at T A =25°CACS706 Output (mV)5 A Excitation SignalTime = 10 μs/div.Excitation signal = 1.00 A/div.Output = 100 mV/div.Time = 20 μs/div.Noise = 20.0 mV/div.ACS706ELC-05C Noise Filtering and Frequency Response Performance Break Frequencyof Filter on Output(kHz)Resistance,R F (kΩ)Capacitance,C F (μF)NominalProgrammedSensitivity(mV/A)FilteredPeak-to-Peak Noise(mV)Resolutionwith Filtering(A)Rise Timefor 5A Step,Filtered(μs)Unfiltered––133 900.6777.45800.2000.01 75.90.5718.26500.32064.70.48610.08 400.39260.30.45311.39 200.80043.30.32617.56 10 1.628.90.21831.96 7.0 3.1518.30.13754.55 3.3 4.813.80.10481.77 0.626 1.90.015404.16 0.3530.760.00573732.89OUTTypical Application DrawingThe ACS706 outputs an analog signal, V Sig. that varies linearly with the bidirectional primarysensed current, I P, within the range specified. R F and C F, are recommended for noise management,with values that depend on the application, as shown in the noise filtering table.Sensitivity (Sens). The change in device output in response to a 1 A change through the primary conductor. The sensitivity is the prod-uct of the magnetic circuit sensitivity (G / A ) and the linear IC amplifier gain (mV/G). The linear IC amplifier gain is programmed at the factory to optimize the sensitivity (mV/A) for the full-scale current of the device.Noise (V NOISE ). The product of the linear IC amplifier gain (mV/G) and the noise floor for the Allegro Hall effect linear IC (≈1 G). The noise floor is derived from the thermal and shot noise observed in Hall elements. Dividing the noise (mV) by the sensitivity (mV/A) provides the smallest current that the device is able to resolve.Linearity (E LIN ): The degree to which the voltage output from the device varies in direct proportion to the primary current through its full-scale amplitude. Nonlinearity in the output can be attributed to the saturation of the flux concentrator approaching the full-scale current. The following equation is used to derive the linearity:Definitions of Accuracy Characteristics1001– [{[{V out_full-scale amperes –V OUT(Q)()2 (V out_half-scale amperes –V OUT(Q))100where V out_full-scale amperes = the output voltage (V) when the sensed current approximates full-scale ±I P .Symmetry (E SYM ). The degree to which the absolute voltage output from the device varies in proportion to either a positive or nega-tive full-scale primary current. The following formula is used to derive symmetry:Quiescent output voltage (V OUT(Q)). The output of the device when the primary current is zero. For a unipolar supply voltage, it nominally remains at V CC ⁄ 2. Thus, V CC = 5 V translates into V OUT(Q) = 2.5 V . Variation in V OUT(Q) can be attributed to the resolution of the Allegro linear IC quiescent voltage trim and thermal drift.Electrical offset voltage (V OE ). The deviation of the device output from its ideal quiescent value of V CC / 2 due to nonmagnetic causes. To convert this voltage to amperes, divide by the device sensitivity, Sens.Accuracy (E TOT ). The accuracy represents the maximum deviation of the actual output from its ideal value. This is also known as the total ouput error. The accuracy is illustrated graphically in the Output V oltage versus Current chart on the following page.Accuracy is divided into four areas:∙ 0 A at 25°C. Accuracy at zero current flow at 25°C, without the effects of temperature.∙ 0 A over Δ temperature. Accuracy at zero current flow including temperature effects.∙ Full-scale current at 25°C. Accuracy at the full-scale current at 25°C, without the effects of temperature.∙ Full-scale current over Δ temperature. Accuracy at full-scale current flow including temperature effects.Ratiometry . The ratiometric feature means that its 0 A output, V OUT(Q), (nominally equal to V CC /2) and sensitivity, Sens, are propor-tional to its supply voltage, V CC . The following formula is used to derive the ratiometric change in 0 A output voltage, ∆V OUT(Q)RAT (%):100V IOUT(Q)VCC /V IOUT(Q)5VV CC /5 VThe ratiometric change in sensitivity, ∆Sens RAT (%), is defined as:100Sens VCC /Sens 5V V CC /5 V ‰Output voltage vs. current, illustrating device accuracy at 0 A and at full-scale currentDefinitions of Dynamic Response CharacteristicsPropagation delay (t PROP): The time required for the device output to reflect a change in the primary cur-rent signal. Propagation delay is attributed to inductive loading within the linear IC package, as well as in the inductive loop formed by the primary conductor geometry. Propagation delay can be considered as a fixed time offset and may be compensated.Response time (t RESPONSE): The time interval between a) when the primary current signal reaches 90% of its final value, and b) when the device reaches 90% of its output corresponding to the applied current.Rise time (t r): The time interval between a) when the device reaches 10% of its full scale value, and b) when it reaches 90% of its full scale value. The rise time to a step response is used to derive the bandwidth of the device, in which ƒ(–3 dB) = 0.35 / t r. Both t r and t RESPONSE are detrimentally affected by eddy current losses observed in the conductive IC ground plane.Device Branding Key (Two alternative styles are used)ACS706T ELC05C YYWWA ACS Allegro Current Sensor706Device family numberT Indicator of 100% matte tin leadframe platingE Operating ambient temperature range codeLC Package type designator05C Primary sensed currentYY Manufacturing date code: Calendar year (last two digits) WW Manufacturing date code: Calendar weekA Manufacturing date code: Shift codeACS706T ELC05CL...L YYWWACS Allegro Current Sensor706Device family numberT Indicator of 100% matte tin leadframe platingE Operating ambient temperature range codeLC Package type designator05C Primary sensed currentL...L Manufacturing lot codeYY Manufacturing date code: Calendar year (last two digits)WW Manufacturing date code: Calendar week Standards and Physical SpecificationsParameter SpecificationFlammability (package molding compound)UL recognized to UL 94V-0Fire and Electric Shock UL60950-1:2003EN60950-1:2001CAN/CSA C22.2 No. 60950-1:2003Chopper Stabilization TechniqueChopper Stabilization is an innovative circuit technique that is used to minimize the offset voltage of a Hall element and an associated on-chip amplifier. Allegro patented a Chopper Stabilization technique that nearly eliminates Hall IC output drift induced by temperature or package stress effects. This offset reduction technique is based on a signal modulation-demodulation process. Modulation is used to separate the undesired dc offset signal from the magnetically induced signal in the frequency domain. Then, using a low-pass filter, the modu-lated dc offset is suppressed while the magnetically induced signal passes through the filter. As a result of this chopper stabilization approach, the output voltage from the Hall IC is desensitized to the effects of temperature and mechanical stress. This technique produces devices that have an extremely stable Electrical Offset V oltage, are immune to thermal stress, and have precise recoverability after temperature cycling.This technique is made possible through the use of a BiCMOS process that allows the use of low-offset and low-noise amplifiers in combination with high-density logic integration and sample and hold circuits.Concept of Chopper Stabilization TechniqueApplications InformationIn order to quantify transient common-mode voltage rejection for the ACS706, a device was soldered onto a printedcircuit board. A 0.1 μF bypass capacitor and a 5 V dc power supply were connected between VCC and GND (pins 8 and5) for this device. A 10 k Ω load resistor and a 0.01 μF capacitor were connected in parallel between the VOUT pin andthe GND pin of the device (pins 7 and 5).A function generator was connected between the primary current conductor (pins 1 thru 4) and the GND pin ofthe device (pin 5). This function generator was configured to generate a 10 V peak (20 V peak-to-peak) sinewave between pins 1-4 and pin 5. Note that the sinusoidal stimulus was applied such that no electrical currentwould flow through the copper conductor composed of pins 1-4 of this device.The frequency of this sine wave was varied from 60 Hz to 5 MHz in discrete steps. At each frequency, thestatistics feature of an oscilloscope was used to measure the voltage variations (noise) on the ACS706 outputin mV (peak to peak). The noise was measured both before and after the application of the stimulus. Transientcommon-mode voltage rejection as a function of frequency is shown in the following figure.Transient Common-Mode Voltage Rejection in the ACS706(kHz)Frequency of 20 V Peak-to-Peak Stimulus –60–55–50–45–40–35–30Tr a nsi e ntR ej ect i o n(d B)The Effect of PCB Layout on ACS706 Thermal PerformanceEight different PC boards were fabricated to characterize the effect of PCB design on the operating junction temperature of the Hall-effect IC inside of the ACS706. These PC boards are shown in the figure below. 2 oz. Cu on one side of board 2 oz. Cu on both sides of board An ACS706 device was soldered on to each PCB for thermal testing. The results of the testing are shown in the following table.Test Results on Eight Thermal Characterization PCBsTested at 15A, T A = 20°C, still air, 2 oz. copper traces, current carried on and off boardby 14 gauge wiresPC BoardsSides with Traces Trace Width (mm)Trace Length (mm)Temperature Rise Above Ambient (°C)1 450901.550Overheated 410481.5101102450531.550106410381.51054Improved PC Board DesignsThe eight PC boards in the figure above do not represent an ideal PC board for use with the ACS706. The ACS706 evaluation boards, for sale at the Allegro Web site On-Line Store, represent a more optimal PC board design (see photo below). On the evaluation boards, the current to be sensed flows through very wide traces that were fabricated using 2 layers of 2 oz. copper. Thermal management tests were conducted on the Allegro evaluation boards and all tests were performed using the same test conditions described in the bulleted list above. The results for these thermal tests are shown in the table below. When using the Allegro evaluation boards we see that even at an applied current of 20 A the junction temperature of the ACS706 is only ≈30 degrees above ambient temperature.Test Results on Eight Electrical Characterization PCBsTested at T A = 20°C, still airApplied Current(A)Temp Rise Above Ambient( C)1522 2031Allegro Current sensor IC evaluation board with ACS706 and external connections.The products described herein are manufactured under one or more of the following U.S. patents: 5,045,920; 5,264,783; 5,442,283; 5,389,889; 5,581,179; 5,517,112; 5,619,137; 5,621,319; 5,650,719; 5,686,894; 5,694,038; 5,729,130; 5,917,320; and other patents pending.Allegro MicroSystems, Inc. reserves the right to make, from time to time, such de p ar t ures from the detail spec i f i c a t ions as may be required topermit improvements in the per f or m ance, reliability, or manufacturability of its products. Before placing an order, the user is cautioned to verify that the information being relied upon is current.Allegro products are not authorized for use as critical components in life-support devices or sys t ems without express written approval.The in f or m a t ion in c lud e d herein is believed to be ac c u r ate and reliable. How e v e r, Allegro MicroSystems, Inc. assumes no re s pon s i b il i t y for its use; nor for any in f ringe m ent of patents or other rights of third parties which may result from its use.Copyright©2005, 2006 Allegro MicroSystems, Inc.Package LC, 8-pin SOICPreliminary dimensions, for reference onlyDimensions in millimetersU.S. Customary dimensions (in.) in brackets, for reference only(reference JEDEC MS-012 AA)Dimensions exclusive of mold flash, gate burrs, and dambar protrusionsExact case and lead configuration at supplier discretion within limits shownA Terminal #1 mark area。
高压板和霍尔电流传感器技术参数

2技术要求和参数2.1高压板满足:QC/T 897-2011电动汽车用电池管理系统技术条件。
2.22.3安装要求:a)本产品应安装在高压盒内部。
b)高压板可以平放安装或竖立安装,应尽量减少分流器承重。
c)分流器紧固螺栓规格为M8,扭矩为10N·m。
d)图示分流器1#安装孔与电池系统负极连接,2#安装孔与负极继电器连接。
e)分流器下方应采用绝缘方式连接。
f)分流器固定平台若为绝缘子连接,因分流器高出底面3.3mm, 应考虑绝缘子的直径与壳体的干涉。
分流器固定孔中心与壳体边缘最小距离为12.98mm。
g)塑料壳体固定平台与分流器固定平台Z向误差不超过0.3mm。
2.4高压板产品外观要求产品无毛刺、飞边,打印标示清晰可见。
各部件表面洁净,无划痕、碰伤、凹陷、毛刺、裂纹、锈蚀、气孔等缺陷,所有拧紧力矩部位应有拧紧标识,铭牌的字迹和内容清楚无误,实物与设计完全匹配。
外表面标记和可追溯性产品外表面应具有铭牌,铭牌应符合双方会签图纸中的规定,内容应包括:产品名称、产品型号或规格、零件号、生产厂商、执行标准号、生产批号、生产日期等,样车阶段允许用纸质铭牌粘贴。
对于带有3C认证标记的零件,供应商应按中国质量认证中心的指南要求在每个零部件上标有3C 认证标记。
2.5高压板存放和运输要求a)本产品应存放在干燥、非阳光直射的环境中;b)存放环境温度范围:-40℃~85℃;c)应避免有腐蚀性溶液、高压电、强振动的场所;d)产品运输及安装过程中应轻拿轻放,防止出现磕碰、磨损;e)产品不宜直接堆放,防止接插件受挤压而损伤;f)产品装配时应当注意接插件安装力度,防止强行安装导致针脚被压弯;g)应确保线束的连接,防止短接、错接、漏接情形。
2.6 霍尔传感器尺寸及安装要求:高压模块测试一、需要工具12V电源、周立功CAN或者其他CAN设备、电池或其他电源设备二、验证步骤步骤1:给低压12V供电和CAN信号采集1.12V电源(引脚J):接12V正地线(引脚C):接12V负内网CANH(引脚D):接CAN设备CANH内网CNAL(引脚H):接CAN设备CANL2.CAN设备读取数据:有报文ID为:0x312即可步骤2:1.主正接插件、主负接插件连接电池(其他电源设备);2.读取报文0x312:确定电流值、电压值是否正确;三、异常数据1.步骤1中如无报文0x312,首先确定供电/CAN线接触有无问题;2.步骤2中电压值有问题,首先确定高压采集点有无接触不良;3.有其他问题随时联系。
闭环霍尔电流传感器的设计与测试

独创性声明
本人声明所呈交的学位论文是我个人在导师指导下进行的研究工作 及取得的研究成果。尽我所知,除文中已经标明引用的内容外,本论文不 包含任何其他个人或集体已经发表或撰写过的研究成果。 对本文的研究做 出贡献的个人和集体, 均已在文中以明确方式标明。 本人完全意识到本声 明的法律结果由本人承担。 学位论文作者签名:
本论文属于
不保密□。
(请在以上方框内打“√” )
学位论文作者签名:
指导教师签名:
日期: 年 月
日
日期: 年 月
华 中 科 技 大 学 硕 士 学 位 论 文
摘 要
闭环霍尔电流传感器的发展在近十几年非常迅猛,广泛应用于汽车电子、工业控 制、伺服电机、UPS 电源、军事等领域。传统的分流器、互感器由于测量的精度低、 可靠性差,所以设计与研究性能更好、可靠性更高、价格更低的闭环霍尔电流传感器 是研究的热点。 目前闭环霍尔电流传感器可靠性低、 加工要求高、 小规模生产成本高, 因此,本文通过对霍尔电流传感器材料、器件的选择和加工工艺的改进,使闭环霍尔 电流传感器在精度和可靠性方面具有显著的优势。 采用数值模拟和实验相结合的方法对闭环霍尔电流传感器进行了优化,研究了铁 芯气隙的宽度、霍尔元件的大小、次级线圈的规格和 PCB 板焊接所出现的缺陷对闭 环霍尔电流传感器灵敏度、线性度和精度的影响。气隙的宽度对电流传感器的灵敏度 和精度影响较大,气隙的宽度为 1.1mm 时,铁芯所聚集的磁感应强度是最大的,漏磁 是最小的, 此时产品的灵敏度是最好的; 霍尔元件的选择对灵敏度和线性度影响很大, 选择 HW302B 时,由于其具有超高灵敏度、空间分辨率高,对提高整个产品的灵敏度 和线性度是非常有利的;次级线圈选用 0.8× 1.5mm 的扁平型漆包线,能提高绕制工艺 的进度和产品的精度。在上述研究的基础上,对闭环电流传感器进行了优化和改进, 对改进以后的产品的实验测试表明结果与理论研究是一致的。 数值模拟研究了磁感应强度随着气隙的宽度的变化情况,表明随着气隙宽度的增 大,磁感应强度在减小,霍尔元件感应的信号会减弱,所发出的信号偏小会导致补偿 电流减小,从而会导致闭环霍尔电流传感器精度变差。对次级线圈缠绕面积对磁感应 强度的影响采用麦克斯韦方程进行模拟,随着次级线圈缠绕面积的增大,所产生的磁 感应强度减小,导致铁芯中的剩磁增加。 研究了放大电路、反馈电路和温度补偿电路,重点分析了在工程应用中印刷电路 板焊接时的主要缺陷,提出了检查缺陷的方法。
开环式霍尔电流传感器功能介绍及与普通互电流感器的区别

开环式霍尔电流传感器功能介绍及与普通互电流感器的区别1、概述霍尔电流传感器主要适用于交流、直流、脉冲等复杂信号的隔离转换,通过霍尔效应原理使变换后的信号能够直接被AD、DSP、PLC、二次仪表等各种采集装置直接采集,广泛应用于电流监控及电池应用、逆变电源及太阳能电源管理系统、直流屏及直流马达驱动、电镀、焊接应用、变频器,UPS伺服控制等系统电流信号采集和反馈控制,具有响应时间快,电流测量范围宽精度高,过载能力强,线性好,抗干扰能力强等优点。
2、型号说明3、技术参数4、开口式开环霍尔电流传感器4.1外形尺寸4.2规格参数对照表注:额定电流未标注表示输入电流交直流均可测量,订货时请注明。
5、霍尔电流传感器与互感器的差别霍尔电流传感器,直流和交流电流都可以测量,普通电流互感器只能测量交流电流,普通电流互感器,使用时,二次侧不能开路,霍尔电流传感器可以开路。
霍尔电流传感器输出电压与流过一次侧电流大小成正比,一次侧电流方向改变输出极性也改变,所以可以测量交流电和直流电,对波形也没有特别的要求;适用频率范围也较宽。
一般应用在电子电路,如变频器上。
交流互感器只能够测量交流,而且频率必须是额定频率,如50Hz互感器测量60Hz误差比较大,输出信号不能够直接进电子检测电路。
传统的电流、电压互感器是利用电磁感应原理对电流、电压进行测量的特种变压器,提供的是物理量或模拟量。
霍尔电压、电流传感器是利用霍尔效应的原理对电压、电流、功率、频率、阻抗或波形等电参数方面进行测量。
与光电技术及数字技术结合可实现对电气参数的数字化控制,是今后的发展方向。
6、霍尔传感器的其他优势:精度高:在工作温度区内精度优于1%,该精度适合于任何波形的测量。
而普通互感器一般精度为3%至5%且适合50Hz正弦波形。
线性度好:优于0.1%动态性能好:响应时间小于1μs跟踪速度di/dt高于50A/μs,霍尔传感器模块这种优异的动态性能为提高现代控制系统的性能提供了关键的基础。
闭环霍尔方案以及磁通门方案---电流传感器

闭环霍尔方案以及磁通门方案---电流传感器闭环霍尔电流传感器下图为前文介绍过的开环霍尔电流传感器的结构图(图片来自于LEM官网),待测电流Ip建立起磁芯内的磁场后,通过霍尔元件感应出的霍尔电压来测量电流值大小;它对外输出的是一个电压模拟量。
而闭环霍尔电流传感器是基于开环原理(下图来自于网络),然后引入了补偿电路;通过磁芯的有两部分电流:原边待测电流与副边补偿电流;原边待测电流就是指电池流经母线铜排中的大电流,而副边补偿电流是由闭环霍尔电流传感器内部产生的,流经磁芯上的副边线圈。
具体地(下图来自于LEM官网),霍尔元件感应出来的霍尔电压并没有直接用于测量,而是霍尔电压通过放大电路后产生了一个副边电流,这个副边电流流过缠绕在磁芯上的线圈,然后通过采样电阻Rm流到地。
这样的话副边电流也会在磁芯中产生一个磁场,并且设计让这个磁场与原边待测电流产生的磁场方向相反,强度相等,那么总磁通量为0,即霍尔元件处于0磁通的环境中。
接下来,当霍尔元件中的磁通为0后,就会得到如下公式,通过测量Is,即可得到Ip;Ns一般为1000~5000,Is一般为25mA~300mA左右。
磁通门电流传感器(Fluxgate)磁通门电流传感器才是我们经常遇到的产品,如LEM的CAB系列。
磁通门电流传感器又可以分为几种,如下图所示(图片来源LEM官网):例如标准型、C-type、IT-type、低频型等,这里介绍比较基本的标准型磁通门原理。
标准型的磁通门电流传感器结构很类似闭环霍尔结构,如下图所示(图片来源于网络),只是在磁芯的气隙处放置的不是霍尔元件,而是一个磁通门的传感器,即可饱和电感。
具体地,在结构上同样有原边待测电流Ip(母线中电流),副边反馈电流Is(副边线圈中),同样地,只要让气隙中的总磁通量为0,根据下式可以计算出Ip:此方案的原理框图如下(来源于LEM官网),前面我们知道了计算电流Ip 的方法,即调节副边电流Is,使得气隙处的总磁通量为0,即可得出Ip;那么,我们怎么实时检测气隙处的磁通量,然后调节磁通量为0呢?这里在气隙处应用了可饱和电感作为探头来识别气隙处的磁通量(下图来源于LEM官网),它是由磁芯与线圈组成的电感探头。
霍尔电压传感器型号

霍尔电压传感器模块名称:闭环霍尔电流传感器模块参数:测量频率:0~100KHz测量范围:1A~40,000A精度:0.2%~1%相应时间:<1uS线性度:0.1%无测量插入损耗测量AC,DC及脉冲电流原边电流与副边输出信号高度隔离模块原理图:工作原理:被测电流In流过导体产生的磁场,由通过霍尔元件输出信号控制的补偿电流Im流过次级线圈产生的磁场补偿,当原边与副边的磁场达到平衡时,其补偿电流Im即可精确反映原边电流In值。
CHV-50P10mA 20mA 50mA 5000:1000 0 150 <0.3mA ±12~15 PCB霍尔电流传感器模块名称:闭环霍尔电流传感器模块参数:测量频率:0~100KHz测量范围:1A~40,000A精度:0.2%~1%相应时间:<1uS线性度:0.1%无测量插入损耗测量AC,DC及脉冲电流原边电流与副边输出信号高度隔离模块原理图:工作原理:被测电流In流过导体产生的磁场,由通过霍尔元件输出信号控制的补偿电流Im流过次级线圈产生的磁场补偿,当原边与副边的磁场达到平衡时,其补偿电流Im即可精确反映原边电流In值。
CHB-50P50A 80A 100mA 1.0% 1:500 0 120 ±12~15 Φ10CHB-200S200A 300A 100mA 0.5% 1:2000 0 50 ±12~18 Φ20CHB-500S500A 1000A 100mA 0.5% 1:5000 0 30 ±12~24 Φ25单极性霍尔单极开关介绍:单极霍尔效应开关具有磁性工作阈值(Bop)。
如果霍尔单元承受的磁通密度大于工作阈值,那么输出晶体管将开启;当磁通密度降至低于工作阈值(Brp) 时,晶体管会关闭。
滞后(Bhys) 是两个阈值(Bop-Brp) 之间的差额。
即使存在外部机械振动及电气噪音,此内置滞后页可实现输出的净切换。
有图真相--光伏逆变器中全系列霍尔电流传感器

有图真相-光伏逆变器中全系列霍尔电流传感器摘要:主要分析国内光伏逆变器现在所用电流电压传感器的方式,同时介绍传感器的作用。
关键词:霍尔电流传感器,霍尔电压传感器,光伏传感器1、引言光伏发电是根据光生伏特效应原理,利用太阳电池将太阳光能直接转化为电能。
不论是独立使用还是并网发电,光伏发电系统主要由太阳电池板(组件)、控制器和逆变器三大部分组成,它们主要由电子元器件构成,不涉及机械部件。
目前,国内光伏产业链各个环节相当完整,参与其中的厂家众多,光伏市场市场过于饱和,竞争激烈的的形势下,降低产品的生产成本成为每个厂家抢占市场占有率的唯一方式,甲方以及各系统集成商对于光伏发电的各个系统环节都需要具有高稳定性的产品,保障整个发电并网环节畅通。
霍尔电流传感器作为光伏并网逆变器中的核心检测元件,要求产品稳定性的同时,兼顾高精确的电量计量工作。
宁波锦澄电子作为国内优秀的电流传感器供应商,销售工程师郑方远为您介绍传感器的原理及选择方式。
2、霍尔电流传感器的原理及分类霍尔电流传感器分为开环和闭环,关于这个问题,大多数的技术人员都认为是开口闭口,其实不然,开环和闭环的指的传感器的原理,开口闭口指的是产品本身的测量安装方式。
简单的对相关内容做个介绍:1)、传感器的开环和闭环原理闭环霍尔电流传感器基于磁平衡式霍尔原理,即闭环原理(也称磁平衡式霍尔),当原边电流IP产生的磁通通过高品质磁芯集中在磁路中,霍尔元件固定在气隙中检测磁通,通过绕在磁芯上的多匝线圈输出反向的补偿电流,用于抵消原边IP产生的磁通,使得磁路中磁通始终保持为零。
经过特殊电路的处理,传感器的输出端能够输出精确反映原边电流的电流变化。
具体可以参考JCE1005-FS的技术参数,原理图及外形如下:开环霍尔电流传感器基于直测式霍尔原理,即开环原理(也称只测试霍尔),原边电流IP产生的磁通被高品质磁芯聚集在磁路中,霍尔元件固定在很小的气隙中,对磁通进行线性检测,霍尔器件输出的霍尔电压经过特殊电路处理后,副边输出与原边波形一致的跟随输出电压,此电压能够精确反映原边电流的变化。
- 1、下载文档前请自行甄别文档内容的完整性,平台不提供额外的编辑、内容补充、找答案等附加服务。
- 2、"仅部分预览"的文档,不可在线预览部分如存在完整性等问题,可反馈申请退款(可完整预览的文档不适用该条件!)。
- 3、如文档侵犯您的权益,请联系客服反馈,我们会尽快为您处理(人工客服工作时间:9:00-18:30)。
失调电流漂移
≤±0.005
mA/℃
线性度
≤0.1
%FS
带宽(-3db)
0~200
KHz
响应时间
100A/us
≤1
us
绝缘电压
50HZ,1min
3.0
KV
工作温度
-40~+85
℃
储存温度
-40~+125
℃
结构参数
使用说明
1当待测电流从传感器穿过,即可在输出端测得电流大小。(注意:错误的接线可能导致传感器损坏)
2.可按用户需求定制不同额定输入和输出电流的传感器。
150(±18V,82Ω)
225(±18V,68Ω)
300(±18V,51Ω)
500(±18V,15Ω)
A
匝比
1:1000
1:1500
1:2000
1:2000
次级线圈阻抗
3045Βιβλιοθήκη 5555Ω
额定输出电流
50±0.5%
50±0.5%
50±0.5%
100±0.5%
mA
电源电压
±12~±18
V
失调电流
±0.2
南京中霍传感科技有限公司
TBC-EC系列霍尔电流传感器
TBC-EC系列霍尔电流传感器是应用霍尔效应原理开发的新一代电流传感器,能在电隔离条件下测量直流、交流、脉冲以及各种不规则波形的电流。
电参数
项目
TBC50EC
TBC75EC
TBC100EC
TBC200EC
额定输入电流
50
75
100
200
A
测量电流范围