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논문검색

High-voltage Isolation Current Sensor by using Signal Modulation Method

원문정보

초록

영어

The signal processing circuit of shunt type current sensor is directly coupled with the high voltage electric circuit so that the common-mode interference signal conditioning becomes a problem. This paper proposes a high-voltage isolation current sensor employs modulation and demodulation which is based on shunt output signal. There is an electrical isolation is set between the high voltage and the low voltage to solve the poor anti-interference ability of shunt type current sensor. The test results show that the current measurement accuracy of the proposed sensor is 0.4%.

목차

Abstract
 1. Introduction
 2. Fundamental Principle
 3. Modulation and Demodulation
  3.1. Modulation principle
  3.2 Demodulation circuit
 4. Experiment and Analysis
  4.1 Test data
  4.2 Curve fitting
  4.3 Nonlinearity error [9]
  4.4 Hysteresis
  4.5 Repeatability
  4.6 Sensitivity
  4.7 Study compared
 5. Conclusion
 Acknowledgements
 References

저자정보

  • Ping Chen State Key Laboratory of Automotive Safety and Energy, Qinghua University, Institute of Pattern Recognition and Application, Chongqing University of Posts and Telecommunications, State Key Laboratory of Vehicle NVH and safety Technology, Chongqing Chang an, Chongqing 401120, China
  • Ling Wang Institute of Pattern Recognition and Application, Chongqing University of Posts and Telecommunications, Chongqing 400065, China
  • Xingyi Wu Institute of Pattern Recognition and Application, Chongqing University of Posts and Telecommunications, Chongqing 400065, China
  • Sheng Lu Institute of Pattern Recognition and Application, Chongqing University of Posts and Telecommunications, State Key Laboratory of Vehicle NVH and safety Technology, Chongqing Chang an, Chongqing 401120, China

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