Journal of Electrical Engineering and Technology

  • 제8권4호
  • /
  • Pages.752-759
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  • 2013
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  • 1975-0102(pISSN)
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  • 2093-7423(eISSN)
대한전기학회 (The Korean Institute of Electrical Engineers)
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Fault Diagnosis and Fault-Tolerant Control of DC-link Voltage Sensor for Two-stage Three-Phase Grid-Connected PV Inverters

  • Kim, Gwang-Seob (Department of Electrical and Computer Engineering, Ajou University) ;
  • Lee, Kyo-Beum (Department of Electrical and Computer Engineering, Ajou University) ;
  • Lee, Dong-Choon (Department of Electrical Engineering, Yeungnam University) ;
  • Kim, Jang-Mok (Department of Electrical Engineering, Pusan National University)
  • 투고 : 2012.06.04
  • 심사 : 2012.12.14
  • 발행 : 2013.07.01
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초록

This paper proposes a method for fault diagnosis and fault-tolerant control of DC-link voltage sensor for two-stage three-phase grid-connected PV inverters. Generally, the front-end DC-DC boost converter tracks the maximum power point (MPP) of PV array and the rear-end DC-AC inverter is used to generate a sinusoidal output current and keep the DC-link voltage constant. In this system, a sensor is essential for power conversion. A sensor fault is detected when there is an error between the sensed and estimated values, which are obtained from a DC-link voltage sensorless algorithm. Fault-tolerant control is achieved by using the estimated values. A deadbeat current controller is used to meet the dynamic characteristic of the proposed algorithm. The proposed algorithm is validated by simulation and experiment results.

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참고문헌

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피인용 문헌

  1. Analysis and Compensation of Current Measurement Errors in a Doubly Fed Induction Generator vol.9, pp.2, 2014, https://doi.org/10.5370/JEET.2014.9.2.532
  2. FPGA-based Centralized Controller for Multiple PV Generators Tied to the DC Bus vol.14, pp.4, 2014, https://doi.org/10.6113/JPE.2014.14.4.733
  3. Active Frequency Drift Method for Islanding Detection Applied to Micro-inverter with Uncontrollable Reactive Power vol.16, pp.5, 2016, https://doi.org/10.6113/JPE.2016.16.5.1918