本站原创摘 要 ：霍尔效应是1879年美国物理学家霍尔读研究生期间在做研究载流子导体在磁场中受力作用实验时发现的.阐述了霍尔效应的原理,霍尔元件的特点和分类以及在各个领域中的应用.在电力测量中,用普通的电压、电流线圈构成的功率表测量精度低、反应速度慢,不能满足精度要求.为了提高无功功率的测量精度,本文将霍尔传感器引入无功功率的测量中,介绍了霍尔效应、霍尔传感器工作原理、无功功率理论及霍尔式功率表的制作原理,为电力无功功率的快速、精确测量提供了理论依据.
关 键 词 ：霍尔效应；无功功率；传感器；功率表
中图分类号：O472.6 文献标识码：A文章编号：1007-9599(2011)24-0000-02
The Application Study of Hall Effect in the Reactive Power Meter
Zhang Cuiming
(Shijiazhuang Vocational and Technology Institute,Shijiazhuang050081,China)
Abstract:Hall effect is found in the 1879 U.S.physicist,Hall graduate student to do research carrier conductor in a magic field by the force experiments.On Hall effect principles,characteristics and classification of the Hall element,as well as applications in various fields.Power measurement,with a mon voltage,current coil constitute the power meter measurement accuracy is low,the reaction is slow,can not meet the accuracy requirements.Order to improve the measurement accuracy of the reactive power,Hall sensors into the measurement of reactive power,Hall effect,Hall sensor working principle,the reactive power theory and the Hall of power production principle,for the power fast,accurate measurements of the reactive power provides a theoretical basis.
Keywords:Hall effect,Reactive power,Sensor,Power meter
伴随电力电子技术的快速发展,家庭和企业中不断引入各种各样的电子设备,使电路越来越复杂,电路的精确测量也越来越受到重视.尤其是电路的无功功率对电网电压的影响很大,无功不足或过大都会导致系统电压下降或上升,极端情况下能引起电压崩溃,给电网带来严重后果,因此,无功功率的精确测量越来越受到大家的关注.传统的由电流、电压线圈构成的功率表由于测量精度低、反应速度慢,已无法适应新的要求.
霍尔效应是