公开(公告)号：US20120153931A1

公开(公告)日：2012-06-21

申请号：US13391822

申请日：2010-01-13

申请人： Zhongzhan Liu ,  Xun Wu ,  Yanting Song

发明人： Zhongzhan Liu ,  Xun Wu ,  Yanting Song

IPC分类号： H01F38/28

CPC分类号： G01R15/18 ,  H01F38/28

摘要： An electronic current transformer (ECT) based on complete self-excitation power supply is provided. The ECT includes an energy-obtaining coil, a rapid voltage-stabilizing circuit and an Analog/Digital (A/D) converting circuit. The output of the energy-obtaining coil is connected with the input of the voltage-stabilizing circuit. The output of the voltage-stabilizing circuit is connected with the control end of the A/D converting circuit. The ECT uses two branch circuits to obtain energy directly from the magnetic field of a bus bar to be measured respectively, synthesizes two output waveforms to fill the wave trough of each other, and reduces the pulse of direct current. In this way, the trough voltage of the synthesized wave is higher than the required stabilizing value of direct voltage and it directly meets the input requirement of the stabilizing module of the voltage-stabilizing circuit. As a result, the ECT can activate the A/D converting circuit rapidly. The present invention has solved the delay problem caused by using a single coil to obtain energy, and has characteristics of small wake-up current, rapid activation and wide application. The ECT can omit additional laser power supply device, simplify the architecture, improve the reliability of operation and service life, and reduce the cost.

摘要翻译： 提供基于完全自励电源的电子电流互感器（ECT）。 ECT包括能量获取线圈，快速稳压电路和模拟/数字（A / D）转换电路。 能量获取线圈的输出端与稳压电路的输入端连接。 稳压电路的输出与A / D转换电路的控制端相连。 ECT使用两个分支电路直接从要测量的母线的磁场获得能量，合成两个输出波形以填充彼此的波谷，并减少直流脉冲。 这样，合成波的谷电压高于所需的直流电压稳定值，直接满足稳压电路稳压模块的输入要求。 因此，ECT可以快速激活A / D转换电路。 本发明解决了使用单线圈获得能量所造成的延迟问题，具有唤醒电流小，启动快，应用广泛的特点。 ECT可以省略额外的激光供电装置，简化架构，提高运行可靠性和使用寿命，降低成本。

公开(公告)号：US08587971B2

公开(公告)日：2013-11-19

申请号：US13391822

申请日：2010-01-13

申请人： Zhongzhan Liu ,  Xun Wu ,  Yanting Song

发明人： Zhongzhan Liu ,  Xun Wu ,  Yanting Song

IPC分类号： H02M1/12

CPC分类号： G01R15/18 ,  H01F38/28

摘要： An electronic current transformer (ECT) based on complete self-excitation power supply is provided. The ECT includes an energy-obtaining coil, a rapid voltage-stabilizing circuit and an Analog/Digital (A/D) converting circuit. The output of the energy-obtaining coil is connected with the input of the voltage-stabilizing circuit. The output of the voltage-stabilizing circuit is connected with the control end of the A/D converting circuit. The ECT uses two branch circuits to obtain energy directly from the magnetic field of a bus bar to be measured respectively, synthesizes two output waveforms to fill the wave trough of each other, and reduces the pulse of direct current. In this way, the trough voltage of the synthesized wave is higher than the required stabilizing value of direct voltage and it directly meets the input requirement of the stabilizing module of the voltage-stabilizing circuit. As a result, the ECT can activate the A/D converting circuit rapidly. The present invention has solved the delay problem caused by using a single coil to obtain energy, and has characteristics of small wake-up current, rapid activation and wide application. The ECT can omit additional laser power supply device, simplify the architecture, improve the reliability of operation and service life, and reduce the cost.

摘要翻译： 提供基于完全自励电源的电子电流互感器（ECT）。 ECT包括能量获取线圈，快速稳压电路和模拟/数字（A / D）转换电路。 能量获取线圈的输出端与稳压电路的输入端连接。 稳压电路的输出与A / D转换电路的控制端相连。 ECT使用两个分支电路直接从要测量的母线的磁场获得能量，合成两个输出波形以填充彼此的波谷，并减少直流脉冲。 这样，合成波的谷电压高于所需的直流电压稳定值，直接满足稳压电路稳压模块的输入要求。 因此，ECT可以快速激活A / D转换电路。 本发明解决了使用单线圈获得能量所造成的延迟问题，具有唤醒电流小，启动快，应用广泛的特点。 ECT可以省略额外的激光供电装置，简化架构，提高运行可靠性和使用寿命，降低成本。