Research on Small Square PCB Rogowski Coil Measuring Transient Current in the Power Electronics Devices
Abstract
:1. Introduction
2. PCB Rogowski Coil Sensor
2.1. The Working Principle of the Coil, the Establishment of the Equivalent Circuit Model and the Determination of the Working Mode
2.2. Error Analysis of Rogowski Coil
2.3. Parameters and Frequency Characteristics of Rogowski Coil
2.4. Subsequent Integration Circuit Design
3. Simulation and Experimental Verification
3.1. Simulation of PCB Rogowski Coil
3.2. Experimental Verification of the PCB Rogowski Coil Current Transformer
4. Conclusions
Author Contributions
Funding
Conflicts of Interest
References
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Turns | Inside | Outside |
---|---|---|
84 | 9.6 mm | 14.4 mm |
Minimum aperture | Plate thickness | Trace width |
0.2 mm | 1 mm | 3.5 mil |
Serial Number | #1 | #2 | #3 | #4 | #5 |
---|---|---|---|---|---|
Internal resistance r (Ω) | 4.28 | 4.14 | 4.07 | 4.85 | 4.63 |
Self-induct L (nH) | 439 | 445 | 436 | 440 | 441 |
Mutual sense M (nH) | 6.10 | 6.18 | 6.06 | 6.11 | 6.13 |
Output Waveform | Integrated Waveform | |
---|---|---|
Open Circuit Voltage Wave | Short Circuit Current Wave | |
cutting edge | 1.2 μs ± 30% | 8 μs ± 20% |
Pulse width | 50 μs ± 20% | 20 μs ± 20% |
Peak | 0~6 kV ± 10% | 0~3 kA ± 10% |
Output impedance | 2Ω ± 10% |
Current Peak (A) | di/dt (kA/μs) | Bandwidth |
---|---|---|
600 | 40 | 6.2–30 M |
Sensitivity | Attenuation characteristic | Maximum noise |
10 | 6 | 10 |
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Jiao, C.; Zhang, J.; Zhao, Z.; Zhang, Z.; Fan, Y. Research on Small Square PCB Rogowski Coil Measuring Transient Current in the Power Electronics Devices. Sensors 2019, 19, 4176. https://doi.org/10.3390/s19194176
Jiao C, Zhang J, Zhao Z, Zhang Z, Fan Y. Research on Small Square PCB Rogowski Coil Measuring Transient Current in the Power Electronics Devices. Sensors. 2019; 19(19):4176. https://doi.org/10.3390/s19194176
Chicago/Turabian StyleJiao, Chaoqun, Juan Zhang, Zhibin Zhao, Zuoming Zhang, and Yuanliang Fan. 2019. "Research on Small Square PCB Rogowski Coil Measuring Transient Current in the Power Electronics Devices" Sensors 19, no. 19: 4176. https://doi.org/10.3390/s19194176