Design and Analysis of PCB Rogowski Coil Current Transformer

Su, Bitao; Li, Li Xue; Zheng, Yi; Wang, Xin; Liu, Yan; Dang, Chang Li

doi:10.4028/www.scientific.net/amm.672-674.984

Cited by 3 publications

(2 citation statements)

References 4 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Conventional Rogowski coils are wound manually or by means of a winding machine, and the wires are wound on non-magnetic materials such as rubber and Bakelite. This fabrication method does not guarantee the consistency of the parameters of the mass-produced Rogowski coils [2]. Therefore, the scholar Kojovic first proposed the idea of designing a new type of Rogowski coil based on (PCB) [3][4][5][6].…”

Section: Introductionmentioning

confidence: 99%

Design of Open-Ended Structure Wideband PCB Rogowski Coil Based on New Winding Method

et al. 2022

View full text Add to dashboard Cite

Compared with the traditional Rogowski coil, printed circuit board (PCB) Rogowski coil has the advantages of high measurement accuracy, simple manufacturing process and low cost. It has become an important device in current measurement. However, the existing PCB Rogowski coils are mostly closed, and the open-ended structure PCB Rogowski coils are susceptible to external magnetic field interference. This paper proposes an open-ended structure PCB Rogowski coil based on a new winding method, so that the two open-ended PCB Rogowski coils are evenly distributed when closed, while improving the coil’s immunity to external magnetic fields based on the winding method of equal area of the de-wired and loop. In addition, this paper uses the hybrid integration circuit and the back-end matching method to achieve the broadband measurement performance of the sensor. Finally, the experimental results show that the mutual inductance difference between the closed and open-ended structure PCB Rogowski coil is less than 0.5% under the same wiring mode. Under the equivalent current interference at 50 mm from the measured current, the maximum interference coefficient of the open-ended structure coil is 1.45%; in sine sweep and pulse current test conditions, the frequency band is 34 Hz–3.5 MHz.

show abstract

Section: Introductionmentioning

confidence: 99%

Design of Open-Ended Structure Wideband PCB Rogowski Coil Based on New Winding Method

et al. 2022

View full text Add to dashboard Cite

show abstract

“…Before Rogowski coil, CT is widely used as current monitoring device. As discussed the advantage of Rogowski coils over CT, it can replace current transformers (CTs) for protection, metering and control purposes [7]. In heavy manufacturing industry requiring to monitor current, Rogowski coil is used in welding system, melting furnace and electromagnetic launchers while in electrical system for shortcircuit testing, protection in high voltage in power plants.…”

mentioning

confidence: 99%

PCB Rogowski Coil sensor by using Saw blade pattern for arcing fault detection

Khalid

Fahmi

Nanyan

et al. 2023

J. Phys.: Conf. Ser.

View full text Add to dashboard Cite

Rogowski is a special current transformer and has been categorised as a low-power stand-alone current sensor. This sensor is designed by using a Saw blade pattern with 50 turns and 100 turns. This number of turns will impact the increment of the sensitivity of the sensor. Rogowski coil is used for measuring the alternating current (AC) and high-speed current pulses. The PCB Rogowski Coil will detect the arcing fault that design with AutoCAD software after that import to CST software. An arc is created when the electrical current jumps the gap between two conductive materials. The most common causes of arcs include worn contacts in electrical equipment, damage to insulation, break in a cable and loose connections. In order to reduce the arc fault risk, the arc fault interrupter (AFI) technology and arc fault detectors (AFD) have been developed. However, these devices are most suitable for domestic application or low voltage (LV). This paper proposed a simulation using AutoCAD and CST software to design a Rogowski coil and the Rogowski Coil sensor will be tested by using CST software in terms of radiation pattern. The biggest radiation pattern in red colour is the saw blade pattern in 100 turns at 2 KHz frequency, the radiation pattern covering entire sensor area compared with other radiation patterns with other frequency. The main lobe magnitude for 2 KHz frequency is 46.8 dB, main lobe direction is 180 deg, angular width is 153.4 deg and the side lobe level is zero. This is the best number of turn and frequency compared to 50 turn saw blade sensor.

show abstract