• Journal of the Korean Magnetics Society
• /
• v.15 no.1
• /
• pp.48-52
• /
• 2005

This paper describes a current sensor for precision current measurement of an electronic watt-hour meter that is going to install in houses in the future. As the current sensor is based on an cored principle (the Rogowski principle) it is not subject to usual limitations of saturation and non-linearity of general current transformers. An advantage of the developed current sensor is that non-linearity error in low current range is improved and the construction can be kept simple using an air core. We present a magnetic field analysis of the sensor using a finite-element solver. We compared the measured values versus the calculated values.

• Proceedings of the Korean Institute of Electrical and Electronic Material Engineers Conference
• /
• 2009.06a
• /
• pp.251-252
• /
• 2009

전류에 의한 자속변화를 검출하는 로고스키코일은 자성체를 코어로 이용하는 종전의 변류기 (Current Transformer) 와는 달리 공심이거나 비자성재료를 사용하기 때문에 자기적으로 포화되지 않으므로 일반적으로 디지털 적산 전력량계의 전류센서로 활용되고 있다. 본 연구는 저온소성 다층 세라믹 기판상에 로고스키코일을 적용한 전자식 전력량계의 정밀 전류측정용 센서 개발에 관한 것이며. 3차원 전자기장 해석 프로그램인 MWS를 하여 기판의 소재와 코일의 패턴의 크기 등을 달리하여 그 특성을 알아보고 실제 구현된 센서의 측정된 값과 비교해 보았다.

• Proceedings of the Korean Institute of Electrical and Electronic Material Engineers Conference
• /
• 2008.11a
• /
• pp.28-28
• /
• 2008

Generally speaking, Rogowskii coil for magnetic flux change detection according to electric current is used for digital addition watt-hour meter, because it is not saturated at electromagnetic that not Current Transformer working by magnetic material but non-magnetic material. In this paper, we described sensitive quality an electric current coil sensor followed by the principal of Rogowskii coil on the low dielectric loss LTCC, change different line width, gap, line length at sensing parts and extinction parts.