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Sensors 2017, 17(1), 85; doi:10.3390/s17010085

Analysis of the Light Propagation Model of the Optical Voltage Sensor for Suppressing Unreciprocal Errors

1
Key Laboratory of Precision Opto-mechatronics Technology, Ministry of Education, School of Instrumentation Science and Opto-electronics Engineering, Beihang University, Beijing 100191, China
2
Fujian Key Laboratory of Light Propagation and Transformation, College of Information Science and Engineering, Huaqiao University, Xiamen 361021, China
*
Author to whom correspondence should be addressed.
Academic Editor: Vittorio M. N. Passaro
Received: 6 November 2016 / Revised: 18 December 2016 / Accepted: 26 December 2016 / Published: 3 January 2017
(This article belongs to the Section Physical Sensors)
View Full-Text   |   Download PDF [6502 KB, uploaded 3 January 2017]   |  

Abstract

An improved temperature-insensitive optical voltage sensor (OVS) with a reciprocal dual-crystal sensing method is proposed. The inducing principle of OVS reciprocity degradation is expounded by taking the different temperature fields of two crystals and the axis-errors of optical components into consideration. The key parameters pertaining to the system reciprocity degeneration in the dual-crystal sensing unit are investigated in order to optimize the optical sensing model based on the Maxwell's electromagnetic theory. The influencing principle of axis-angle errors on the system nonlinearity in the Pockels phase transfer unit is analyzed. Moreover, a novel axis-angle compensation method is proposed to improve the OVS measurement precision according to the simulation results. The experiment results show that the measurement precision of OVS is superior to ±0.2% in the temperature range from −40 °C to +60 °C, which demonstrates the excellent temperature stability of the designed voltage sensing system. View Full-Text
Keywords: optical voltage sensor; measurement accuracy; temperature stability optical voltage sensor; measurement accuracy; temperature stability
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Li, H.; Fu, Z.; Liu, L.; Lin, Z.; Deng, W.; Feng, L. Analysis of the Light Propagation Model of the Optical Voltage Sensor for Suppressing Unreciprocal Errors. Sensors 2017, 17, 85.

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