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《High Voltage Engineering》 2008-07
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Application of Isolation Converter of Optical Fiber in the High Voltage Charging Power Supply

SHI Yi1,2,YANG Xiao-wei1,2,GAO Ying-hui1,YAN Ping1(1.Institute of Electrical Engineering,Chinese Academy of Sciences,Beijing 100190,China;2.Graduate School of Chinese Academy of Sciences,Beijing 100190,China)  
In order to isolate the control circuit of power supply from the ground of the load and ensure the power supply to work safely and reliably,the isolation converter of optical fiber based on the conversion principle of voltage to frequency and frequency to voltage,which is used in the measured circuit of the high voltage charging power supply,is introduced.The configuration of converter system as well as the principle and hardware design is described.The transmission delay of isolation converter system is analyzed in detail.In addition,a digitized method using the digital signal process(DSP)to achieve the conversion of frequency to voltage is put forward.The experimental results and the practical operation shows that the converter has high linearity and meets the measurement demands of the charging voltage whose maximum rate-of-climb is 360 V per second.This isolation converter has high voltage level,high transmission precision and easy operation,fits the control system which has middle or low speed and requires isolation of high voltage.
【Fund】: 国家自然科学基金(50437020)~~
【CateGory Index】: TM912
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