低功耗铁芯线圈型电子式电流互感器的非线性补偿技术研究Research on Nonlinear Compensation Technology for Low Power Iron-core Coil Electronic Current Transformers
刘江仙,沈利清
LIU Jiang-xian1,Shen Li-qing 2(1.Zhejiang Horizon Instrument Transformers Co.
摘要(Abstract)：
低功耗铁芯型电子式电流互感器通常连接测量用仪器仪表,但是作为一次传感器的低功耗铁芯线圈具有非线性的特点,磁化电流是它的主要误差源。因此提出了一种非线性补偿技术,该技术基于低成本线性电路和非线性数字控制律,能输出准确度高的电压模拟量,理论分析及实验验证了该技术方案的可行性。
The low power iron-core coil electronic current transformers are often connected with measuring instruments and meters.However,low power iron-core coils have nonlinear characteristics as primary current sensors and the main error source is the magnetizing current.Therefore,a nonlinear compensation approach is proposed.It can output high-accuracy voltage analog quantity based on a low-cost linear circuit and a nonlinear numeric control law.And the feasibility of the technical scheme is verified by theoretical analysis and experiments.
关键词(KeyWords)：
电子式;电流互感器;铁芯线圈型;非线性
electronic;current transformer;iron-core coil;nonlinear
基金项目(Foundation):
作者(Author):
刘江仙,沈利清
LIU Jiang-xian1,Shen Li-qing 2(1.Zhejiang Horizon Instrument Transformers Co.
DOI: 10.19585/j.zjdl.2011.07.006
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