Signal Detection for Optical AC and DC Voltage Sensors Based on Pockels Effect
作者： Hui Li , Liyang Cui , Zhili Lin , Lijing Li , Rui Wang
DOI: 10.1109/JSEN.2013.2249581
关键词: Electronic engineering 、 Engineering 、 Electrical engineering 、 Bandwidth (signal processing) 、 Band-pass filter 、 Pockels effect 、 Attenuation 、 Voltage 、 Robustness (computer science) 、 Exponential stability 、 Detection theory
摘要: A new signal detection technology is presented to improve the stability and robustness of optical voltage sensors (OVSs) based on Pockels effect for measurement ac dc voltages. The closed-loop error OVS a weak nonlinear vulnerable unavoidable noise. Simultaneously, nonlinearity noise in physical components OVSs are major causes performance deterioration system practical high-voltage applications. We design hardware that can precisely extract be applicable Based hardware, we analyze dynamic model considering effects nonlinearity, noise, time-delay. control scheme proved obtain exponential with desired attenuation level experimental results show has wide bandwidth up 24.5 kHz, maximum step 19.5 kV, accuracy within 0.2% 0.5%, respectively. validate effectiveness usefulness our proposed method.
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