Related Experiment Video
Updated: Jan 19, 2026
06:17
Quantifying the Relative Thickness of Conductive Ferromagnetic Materials Using Detector Coil-Based Pulsed Eddy Current Sensors
Published on: January 16, 2020
6.1K
Research on Small Square PCB Rogowski Coil Measuring Transient Current in the Power Electronics Devices
Chaoqun Jiao1, Juan Zhang2, Zhibin Zhao3
1School of Electrical Engineering, Beijing Jiaotong University, No.3 ShangYuanCun, Haidian District, Beijing 100044, China. chqjiao@bjtu.edu.cn.
Sensors (Basel, Switzerland)
|September 29, 2019
Summary
This study introduces a miniature printed circuit board (PCB) Rogowski coil for measuring transient currents in power electronics devices like insulated-gate bipolar transistors (IGBTs). This non-invasive method aids in assessing device reliability under high voltage and current conditions.
Area of Science:
- Electrical Engineering
- Materials Science
- Power Electronics
Background:
- China's electric power sector expansion drives demand for high-voltage, high-current power electronics.
- Transient current phenomena, including overshoot and uneven distribution, pose reliability risks to devices like insulated-gate bipolar transistors (IGBTs).
Purpose of the Study:
- To develop a non-invasive current measurement technique for power electronic devices.
- To provide a method for assessing the reliability of power electronic devices under transient conditions.
Main Methods:
- Development of a miniature printed circuit board (PCB) Rogowski coil.
- Integration of the Rogowski coil for in-situ current measurement within power electronic device structures.
Main Results:
- The proposed miniature PCB Rogowski coil enables non-invasive measurement of transient currents.
- The device can measure currents without altering the internal structure of power electronic components.
Conclusions:
- The miniature PCB Rogowski coil is a viable tool for monitoring transient currents in power electronics.
- This technique offers a valuable reference for improving the reliability design of power electronic devices.
Related Concept Videos
01:22Series R—L Circuit Transients
382
In a series resistor-inductor (R-L) circuit, closing the switch at the start of the time period simulates a three-phase short circuit, a fault condition where all three phases of an unloaded synchronous machine are short-circuited. When there is no fault impedance and no initial current, the initial voltage is determined by the phase angle of the source voltage.
Using Kirchhoff's Voltage Law (KVL) to analyze this circuit helps determine the total asymmetrical fault current, which consists...
Using Kirchhoff's Voltage Law (KVL) to analyze this circuit helps determine the total asymmetrical fault current, which consists...
382
01:16Magnetic Field Of A Current Loop
6.2K
Consider a circular loop with a radius a, that carries a current I. The magnetic field due to the current at an arbitrary point P along the axis of the loop can be calculated using the Biot-Savart law.
6.2K
01:13Torque On A Current Loop In A Magnetic Field
5.8K
The most common application of magnetic force on current-carrying wires is in electric motors. These consist of loops of wire, which are placed between the magnets with a magnetic field. When current flows through the loops, the magnetic field applies torque, which causes the shaft to rotate, thus converting electrical energy to mechanical energy.
Consider a rectangular current-carrying loop containing N turns of wire, placed in a uniform magnetic field. The net force on a current-carrying loop...
Consider a rectangular current-carrying loop containing N turns of wire, placed in a uniform magnetic field. The net force on a current-carrying loop...
5.8K
01:22Magnetic Force On Current-Carrying Wires: Example
2.1K
In a magnetic field, moving charges encounter a force. If a wire contains these moving charges, i.e., if the wire is carrying a current, then a force acts on the wire as well. Consider a pair of flexible leads holding a wire that is 40 cm long and 10 g in weight in a horizontal position. The wire is placed in a constant magnetic field of 0.40 T, as shown in Figure 1(a). Determine the magnitude and direction of the current flowing in the wire needed to remove the tension in the supporting leads.
2.1K
01:17Force On A Current Loop In A Magnetic Field
4.0K
Magnetic forces on wires carrying current are most frequently applied in motors. A DC motor is a device that converts electrical energy into mechanical work. In motors, wire loops are enclosed in a magnetic field. When current flows through the loops, the magnetic field applies torque, which causes the shaft to rotate. The direction of the current is reversed once the loop's surface area is lined up with the magnetic field, causing a constant torque on the loop. During the process, commutators...
4.0K
01:13Magnetic Force Between Two Parallel Currents
4.5K
Two long, straight, and parallel current-carrying conductors exert a force of equal magnitude on one another. The direction of the force depends on the current direction in the conductors.
The force exerted by the magnetic field due to the first conductor over a finite length of the second conductor is given as the product of the current in the second conductor and the vector product of the length vector along the current element and the field due to the first conductor. According to the...
The force exerted by the magnetic field due to the first conductor over a finite length of the second conductor is given as the product of the current in the second conductor and the vector product of the length vector along the current element and the field due to the first conductor. According to the...
4.5K