Design for digital integrator of Rogowski coil based on pipeline structure

2010 ◽  
Author(s):  
Xin Zhang ◽  
Long-hua Mu
Keyword(s):  
Rogowski Coil ◽  
Digital Integrator

scholarly journals Transforming characteristics of the Rogowski coil current transformer with a digital integrator for high-frequency signals

2019 ◽  
Vol 2019 (16) ◽  
pp. 3337-3340 ◽  
Author(s):  
Fubin Pang ◽  
Yu Liu ◽  
Jianfei Ji ◽  
Chi Zhang
Keyword(s):  
High Frequency ◽  
Current Transformer ◽  
Rogowski Coil ◽  
Coil Current ◽  
Digital Integrator

Research on PCB Rogowski Current Transformer Based on AD7742

2014 ◽  
Vol 981 ◽  
pp. 589-593
Author(s):  
Xin Lao Wei ◽  
Bo Zhu ◽  
Bing Pang ◽  
Tong Liu ◽  
Song Wang ◽  
...  
Keyword(s):  
Current Transformer ◽  
High Accuracy ◽  
Rogowski Coil ◽  
Magnetic Saturation ◽  
Iron Core ◽  
Measuring Range ◽  
Digital Integrator ◽  
Saturation Phenomenon ◽  
Good Linearity ◽  
Rogowski Coils

Rogowski coils is a kind of special structure hollow coils, it has good linearity, no iron core, no magnetic saturation phenomenon and wide measuring range, which has been used to measure all kinds of various changes current. The current transformer consist of PCB Rogowski coil and digital integrator has been designed, includes the structure of PCB Rogowski coils and the principle digital integrator based on AD7742. The test of PCB current transformer show that it has high accuracy and PCB coils has good linearity. It can meet the requirement of current measurement.

Research of Accurate Digital Integrator for Rogowski Coil Current Transformer

2019 ◽  
Author(s):  
Yibo Jin ◽  
Weidong Zhang ◽  
Jie Lou ◽  
Jiapei Wang ◽  
Wenxiu Zhang
Keyword(s):  
Current Transformer ◽  
Rogowski Coil ◽  
Coil Current ◽  
Digital Integrator

High Accuracy On-Line Calibration System for Current Transformers Based on Clamp-Shape Rogowski Coil and Improved Digital Integrator

MAPAN ◽  
2016 ◽  
Vol 31 (2) ◽  
pp. 119-127 ◽  
Author(s):  
Zhen-hua Li ◽  
Su-hong Yan ◽  
Wei-zhong Hu ◽  
Zhen-xing Li ◽  
Yan-chun Xu
Keyword(s):  
High Accuracy ◽  
Rogowski Coil ◽  
Calibration System ◽  
Current Transformers ◽  
Digital Integrator ◽  
On Line

Error analysis of PCB Rogowski coil

2011 ◽  
Vol 25 (1) ◽  
pp. 50-55
Author(s):  
Na Wang ◽  
Quan Wan
Keyword(s):  
Error Analysis ◽  
Rogowski Coil

scholarly journals Research on Small Square PCB Rogowski Coil Measuring Transient Current in the Power Electronics Devices

Sensors ◽  
2019 ◽  
Vol 19 (19) ◽  
pp. 4176 ◽  
Author(s):  
Chaoqun Jiao ◽  
Juan Zhang ◽  
Zhibin Zhao ◽  
Zuoming Zhang ◽  
Yuanliang Fan
Keyword(s):  
Power Electronics ◽  
Printed Circuit Board ◽  
Electronic Devices ◽  
Rogowski Coil ◽  
Bipolar Transistors ◽  
Circuit Board ◽  
Power Electronic ◽  
Insulated Gate Bipolar Transistors ◽  
Printed Circuit ◽  
Internal Structures

With the development of China’s electric power, power electronics devices such as insulated-gate bipolar transistors (IGBTs) have been widely used in the field of high voltages and large currents. However, the currents in these power electronic devices are transient. For example, the uneven currents and internal chip currents overshoot, which may occur when turning on and off, and could have a great impact on the device. In order to study the reliability of these power electronics devices, this paper proposes a miniature printed circuit board (PCB) Rogowski coil that measures the current of these power electronics devices without changing their internal structures, which provides a reference for the subsequent reliability of their designs.

A New Application of Rogowski Coil Sensor for Partial Discharge Localization in Power Transformers

2021 ◽  
pp. 1-1
Author(s):  
Sajjad Sharifinia ◽  
Mehdi Allahbakhshi ◽  
Teymoor Ghanbari ◽  
Asghar Akbari ◽  
Hassan Reza Mirzaei
Keyword(s):  
Partial Discharge ◽  
Rogowski Coil ◽  
Power Transformers

scholarly journals Development of a Transient Magnetic Field Sensor Based on Digital Integration and Frequency Equalization

Sensors ◽  
2021 ◽  
Vol 21 (13) ◽  
pp. 4268
Author(s):  
Hongzhi Ouyang ◽  
Xueling Yao ◽  
Jingliang Chen
Keyword(s):  
Magnetic Field ◽  
Electromagnetic Compatibility ◽  
Dynamic Range ◽  
Finite Impulse Response ◽  
Low Noise ◽  
Magnetic Field Sensor ◽  
Fiber System ◽  
Digital Integrator ◽  
Transient Magnetic Field ◽  
Field Sensor

Transient magnetic field sensors are used in various electromagnetic environment measurement scenarios. In this paper, a novel magnetic field sensor based on a digital integrator was developed. The antenna was a small B-DOT loop. It was designed optimally for the simulation. The magnetic field signal was digitally integrated with the improved Al-Alaoui algorithm, resulting in less integration error. To compensate for the bandwidth loss of the optical fiber system, we specially designed an FIR (finite impulse response) filter for frequency compensation. The circuit was described, and the transimpedance amplifier was specially designed to ensure the low noise characteristic of the receiver. The sensitivity of the sensor was calibrated at 68.2 A·m−1/mV, the dynamic range was 50 dB (1–300 kA/m), the linear correlation coefficient was 0.96, and the bandwidth was greater than 100 MHz. It was tested and verified under the action of an A-type lightning current. The sensor exhibited high-precision performance and flat amplitude-frequency characteristics. Therefore, it is suitable for lightning positioning, partial discharge testing, electromagnetic compatibility management, and other applications.

Measurement of the Current in 2G HTS Coil With Rogowski Coil in Cryogenic Environment

2019 ◽  
Vol 29 (2) ◽  
pp. 1-5 ◽  
Author(s):  
Shuqian Huang ◽  
Wei Wang ◽  
Yong Lei ◽  
Xianyong Xiao ◽  
Peng Wang ◽  
...  
Keyword(s):  
Rogowski Coil

Servo Drive Trajectory Design of Three-Axis Laser Processing System

2014 ◽  
Vol 529 ◽  
pp. 139-143
Author(s):  
Wei Hua Jiang ◽  
Yuan Cheng Fan ◽  
Da Zeng
Keyword(s):  
Control System ◽  
Processing System ◽  
Movement Control ◽  
Linear Interpolation ◽  
Numerical Control ◽  
Trajectory Design ◽  
Servo Drive ◽  
Digital Integrator ◽  
Detector Resolution ◽  
And Control

Three-axis processing of laser inner engraving machine control system can carry on multi-axis linkage control. Furthermore, it ensures multi-axis of high feeding speed and trajectory control of high precision. This article introduces the design of laser inner engraving machine movement control system. The core is a digital integrator of linear interpolation algorithm to generate the desired trajectory and control XYZ axis linkage. Wide speed range of servo motor and position detector resolution is adequate to constitute a half-closed loop drive. With integral separation algorithm being introduced in the controller, the speed of numerical control system, track speed and positioning accuracy are guaranteed in order to achieve optimal specification for dynamic and static characteristics of the whole system.

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