New compensation scheme of magneto-optical current sensor for temperature stability improvement

• Autorzy: Chen J. , Li H. , Zhang M. , Zhang Y.
• Języki publikacji: PL

Abstrakty

EN

A novel magneto-optical current sensor (MOCS) with two sensing arms is proposed to improve the temperature stability. One of the arms, with a highly stable permanent magnet attached and orthogonal to the other one, is designed to provide a reference that follows the temperature characteristics of the sensing material. By a normalization operation between two arms, the temperature drift is compensated adaptively and a sensing output proportional to the measured current can be reached. A dual-input and dual-output structure is specially designed for the reference sensing arm to demodulate the DC Faraday rotation angle. This scheme compensates simultaneously two main temperature influence factors, the Verdet constant and linear birefringence. Validation tests were carried out and are discussed.

Słowa kluczowe

EN

magneto-optical current sensor; normalization; Verdet constant; birefringence

• Wydawca: Komitet Metrologii i Aparatury Naukowej PAN
• Czasopismo: Metrology and Measurement Systems
• Rocznik: 2012
• Tom: Vol. 19, nr 3
• Strony: 611--616
• Opis fizyczny: Bibliogr. 9 poz., rys., wykr., wzory

Twórcy

autor

Chen J.

autor

Li H.

autor

Zhang M.

autor

Zhang Y.

• Huahzong University of Science and Technology, Rd-Luoyu 1037, Wuhan, Hubei, 430074, China,

Bibliografia

• [1] Menke, P., Bosselmann, T. (1995). Temperature compensation in magnetooptic AC current sensor using an intelligent AC-DC signal evaluation. J. Lightwave Technol., 13(77), 1362-1370.
• [2] Wang, Z., Li, Q., Qi, Y., Huang, Z., Shi, J. (2004). Joint effect of dispersions of reflection-induced retardance and Verdet constant upon the sensitivity of an magneto-optical current sensor. Optics and Laser Technology, 36(3), 233-237.
• [3] Yuri, S., Didosyan, H.H., Haberl, F. (2001). Magneto-magneto-optical current transformer of high bandwidth and large temperature range. Sensors and Actuators A: Physical, 92(1-3), 67-73.
• [4] Ma, X., Luo, C. (1998). A method to eliminate birefringence of a magneto-optic AC current transducer with glass ring sensor head. IEEE Trans. Power Delivery, 13(4), 1015-1019.
• [5] Iain Madden, W., Craig Michie, W., Cruden, A., Niewczas, P., McDonald, J.R. (1999). Temperature compensation for optical current sensors. Opt. Eng., 38(10), 1701-1707.
• [6] Perciante, C.D., Ferrari, J.A. (2005). Faraday current sensor with temperature monitoring. Appl. Opt., 44(32), 6910-6912.
• [7] International standard. (2002). IEC60044-8: Instrument transformer-Part 8: Electronic current transformer. International Electrotechnical Commission.
• [8] Williams, P.A., Rose, A.H., Day, G.W., Milner, T.E., Deeter, M.N. (1991). Temperature dependence of the Verdet Constant in Several diamagnetic glass. Appl. Opt., 30(10), 1176-1178.
• [9] Yi, B., Chu, B.C.B., Chiang, K.S., Chung, H.S.H. (2000). New design of optical electric-current sensor for sensitivity improvement. IEEE Trans. Instrum. Meas., 49(2), 418-423.