×

电流传感器的测量与挑战

消耗积分:0 | 格式:rar | 大小:0.20 MB | 2017-06-14

分享资料个

  电流传感器的测量与挑战

  电流传感器是一种检测电流(交流或直流)流量并产生与之成比例的信号的装置。测量低和高的电流传感器检测过流和潜流条件使这些设备理想的电气化设备,提供状态信息或保护为例,在混合动力汽车和燃料电池,它是以高精度的测量电流和功率的关键。其他汽车使用的电流传感器IC包括HEV逆变器和电子动力转向(EPS)系统。

  为了保持汽车应用所固有的温度范围的精确性,从40°到125°C,存在着许多挑战,其中包括漂移。此外,在高电流和温度下,故障率更容易发生,因为传感器可能无法承受较高的电流浪涌。

  测量大电流是特别有问题的。许多电路中使用的电阻器往往不能处理高电压。因此,在这个级别的测量需要一个专用的电流互感器或传感器,以减少电路中的电流的大小到一个可管理的水平。

  

  The two types of current transformers involved are split core and solid core. Split-core current (open) transformers can be placed near existing wires without circuit disruption. As such, while they are often expensive, they can reduce overall system cost. In comparison, solid-core current (closed) transformers require the circuit to be rewired to pass though the core, but they can deliver extremely precise and accurate current measurement compared with the open transformer variety.

  Another major challenge of using current sensors is that the outputs of multiple sensors employed throughout a system are often very different. Consequently, if the wrong sensor is connected, or if it is connected improperly, equipment damage or a safety hazard to personnel can result.

声明:本文内容及配图由入驻作者撰写或者入驻合作网站授权转载。文章观点仅代表作者本人,不代表电子发烧友网立场。文章及其配图仅供工程师学习之用,如有内容侵权或者其他违规问题,请联系本站处理。 举报投诉

评论(0)
发评论

下载排行榜

全部0条评论

快来发表一下你的评论吧 !