光伏系统用于漏电流测量的霍尔闭环传感器设计

基于闭环磁通门技术的传感器广泛应用在测量大电流中的小剩余电流以及噪声共模电流。这类传感器的精度以及对大电流的隔离能力使之成为漏电流检测的最优方案,但通常缺点是成本昂贵且体积庞大。本文介绍了一种新型小尺寸且利用霍尔闭环技术对太阳能系统中的漏电流进行测量的传感器:新一代的LDSR产品。

Closed-loop Hall Sensors with Near Fluxgate Performance for Residual Current Measurement in Photovoltaic Systems

Closed-loop fluxgate sensors are widely used to measure small residual currents flowing in large and noisy common mode currents.Their accuracy and ability to provide high galvanic isolation make them the"preferred choice"for residual current measurement(RCM),but with the penalty of a costly and physically large design.This paper describes an innovative,reduced foot print,closed-loop sensor for residual current measurement in photovoltaic(PV)systems based on Hall technology:the new LDSR.