公开(公告)号：US20100219799A1

公开(公告)日：2010-09-02

申请号：US11884741

申请日：2006-02-17

申请人： Ruthard Minkner ,  Joachim Schmid ,  Rolf Fluri

发明人： Ruthard Minkner ,  Joachim Schmid ,  Rolf Fluri

IPC分类号： G05F1/00

CPC分类号： G01R15/181

摘要： Disclosed is a toroidal core current transformer comprising a primary conductor which penetrates the toroidal core and a secondary winding that is wound around the toroidal core. A measuring shunt (RSh) or a load (Zb) is provided at the secondary end. In order to compensate the phase error (f) between the primary current (IP) and the secondary current (Is), a compensation circuit (K) whose capacity (C) is measured substantially according to equation (I) or (II) is provided at the secondary end. In equation (I) or (II), C represents the capacity of the compensation circuit, ω represents the radian frequency, φ represents the phase error between the primary current and the secondary current, Rsh represents the resistance of an optional measuring shunt, and Zb represents the impedance of an optional load. C =  tan   φ  ω · R sh ( I ) C =  tan   ϕ  ω ·  Z _  ( II )

摘要翻译： 公开了一种环形磁芯电流互感器，其包括穿过环形磁芯的主导体和缠绕在环形磁芯上的次级绕组。 次级端设有测量分路（RSh）或负载（Zb）。 为了补偿初级电流（IP）和次级电流（Is）之间的相位误差（f），基本上按照式（I）或（II）测量容量（C）的补偿电路（K）是 提供在次级端。 在等式（I）或（II）中，C表示补偿电路的容量，ω表示弧度频率， 表示初级电流和次级电流之间的相位误差，Rsh表示可选的测量分流器的电阻，Zb表示可选负载的阻抗。 C = tan tan＆phgr ω·sh sh;;;;;;;;;;;;;; ω

公开(公告)号：US08212535B2

公开(公告)日：2012-07-03

申请号：US11884741

申请日：2006-02-17

申请人： Ruthard Minkner ,  Joachim Schmid ,  Rolf Fluri

发明人： Ruthard Minkner ,  Joachim Schmid ,  Rolf Fluri

IPC分类号： G05F5/00 ,  G05F1/00 ,  H02J3/08

CPC分类号： G01R15/181

摘要： Disclosed is a toroidal core current transformer comprising a primary conductor which penetrates the toroidal core and a secondary winding that is wound around the toroidal core. A measuring shunt (RSh) or a load (Zb) is provided at the secondary end. In order to compensate the phase error (f) between the primary current (IP) and the secondary current (Is), a compensation circuit (K) whose capacity (C) is measured substantially according to equation (I) or (II) is provided at the secondary end. In equation (I) or (II), C represents the capacity of the compensation circuit, ω represents the radian frequency, φ represents the phase error between the primary current and the secondary current, Rsh represents the resistance of an optional measuring shunt, and Zb represents the impedance of an optional load. C =  tan ⁢ ⁢ ϕ  ω · R sh ( I ) C =  tan ⁢ ⁢ φ  ω ·  Z _  ( II )

摘要翻译： 公开了一种环形磁芯电流互感器，其包括穿过环形磁芯的主导体和缠绕在环形磁芯上的次级绕组。 次级端设有测量分路（RSh）或负载（Zb）。 为了补偿初级电流（IP）和次级电流（Is）之间的相位误差（f），基本上按照式（I）或（II）测量容量（C）的补偿电路（K）是 提供在次级端。 在等式（I）或（II）中，C表示补偿电路的容量，ω表示弧度频率， 表示初级电流和次级电流之间的相位误差，Rsh表示可选的测量分流器的电阻，Zb表示可选负载的阻抗。 C = tan tan＆phis; ω·R sh（I）C = tan tan＆phgr; ω