Journal of international Conference on Electrical Machines and Systems

Journal of International Conference on Electrical Machines and Systems (대한전기학회 분과)
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Fault Diagnosis Method of Voltage Sensor in 3-phase AC/DC PWM Converters

  • Kim, Hyung-Seop (Dept. of Electrical Engineering, Pusan National University) ;
  • Im, Won-Sang (Dept. of Electrical Engineering, Pusan National University) ;
  • Kim, Jang-Mok (Dept. of Electrical Engineering, Pusan National University) ;
  • Lee, Dong-Choon (Dept. of Electrical Engineering, Yeungnam University) ;
  • Lee, Kyo-Beum (Dept. of Electronic Engineering, Ajou University)
  • Received : 2012.07.31
  • Accepted : 2012.08.26
  • Published : 2012.09.01
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Abstract

This paper proposes a fault diagnosis method of the line-to-line voltage sensors in 3-phase AC/DC pulse width modulation (PWM) converters. The line-to-line voltage sensors are an essential device to obtain the information of the grid voltages for controlling the 3-phase AC/DC PWM converters. If the line-to-line voltage sensors are mismeasured by various faults, the voltage sensors can obtain wrong information of the grid voltage. It has an adverse effect on the control of the converter. Therefore, the converter causes the unbalance input AC current and the DC-link voltage ripple in the 3-phase AC/DC PWM converter. Hence, fast fault detection and fault tolerant control are needed. In this paper, the fault diagnosis method is proposed and verified through simulations and experiments.

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References

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