Journal of Electrical Engineering and Technology

The Korean Institute of Electrical Engineers (대한전기학회)
권호 표지
DOI QR코드

DOI QR Code

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)
  • Received : 2012.06.04
  • Accepted : 2012.12.14
  • Published : 2013.07.01
Download PDF
⟨ Previous Next ⟩

Abstract

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.

Keywords

References

  1. R. J. Wai, W. H. Wang and C. Y. Lin, "High-performance stand-alone photovoltaic generation system," IEEE Trans. Ind. Electron., Vol. 55, No. 1, pp. 240-250, Jan. 2008. https://doi.org/10.1109/TIE.2007.896049
  2. F. Blaabjerg, R. Teodorescu, M. Liserre and A. Timbus, "Overview of control and grid synchronization for distributed power generation systems," IEEE Trans. Ind. Electron., Vol. 53, No. 5, pp. 1398-1409, Oct. 2006.
  3. J. Carrasco, L. Franquelo, J. Bialasiewicz, E. Galvan, R. Portillo Guisado, M. Prats, J. Leon and N. Moreno-Alfonso, "Power-electronic systems for the grid integration of renewable energy sources: A survey," IEEE Trans. Ind. Electron., Vol. 53, No. 4, pp. 1002-1016, Jun. 2006. https://doi.org/10.1109/TIE.2006.878356
  4. S. B. Lee, K. B. Lee, D. C. Lee and J. M. Kim, "An Improved Control Method for a DFIG in a Wind Turbine under an Unbalanced Grid Voltage Condition," Journal of Electrical Engineering & Technology, Vol. 5, No. 4, pp. 614-622, Dec. 2010. https://doi.org/10.5370/JEET.2010.5.4.614
  5. T. F. Wu, C. H. Chang, L. C. Lin and C. L. Kuo, "Power Loss Comparison of Single- and Two-Stage Grid-Connected Photovoltaic Systems," IEEE Trans. Energy Convers., Vol. 26, No. 2, pp. 707-715, Jun. 2011. https://doi.org/10.1109/TEC.2011.2123897
  6. H. S. Bae, J. H. Park, B. H. Cho, and G. J. Yu, "New MPPT Control Strategy for Two-Stage Grid-Connected Photovoltaic Power Conditioning System," Journal of Power Electronics, Vol. 7, No. 2, pp. 174-180, Apr. 2007.
  7. Y. J. Ko and K. B. Lee, "Fault Diagnosis of a Voltage-Fed PWM Inverter for a Three-Parallel Power Conversion System in a Wind Turbine," Journal of Power Electronics, Vol. 10, No. 6, pp. 686-693, Nov. 2010. https://doi.org/10.6113/JPE.2010.10.6.686
  8. U. M. Choi, H. G. Jeong, K. B. Lee, and F. Blaabjerg, "Method for Detecting an Open-Switch Fault in a Grid-Connected NPC Inverter System," IEEE Trans. Power Electron., Vol. 27, No. 6, pp. 2726-2739, Jun. 2012. https://doi.org/10.1109/TPEL.2011.2178435
  9. J. M. Kwon, B. H. Kwon and K. H. Nam, "Threephase photovoltaic system with three-level boosting MPPT control," IEEE Trans. Power Electron., Vol. 23, No. 5, pp. 2319-2327, Sep. 2008. https://doi.org/10.1109/TPEL.2008.2001906
  10. Q. Zeng and L. Chang, "An advanced SVPWM-based predictive current controller for three-phase inverters in distributed generation systems," IEEE Trans. Ind. Electron., Vol. 55, No. 3, pp. 1235-1246, Mar. 2008. https://doi.org/10.1109/TIE.2007.907674
  11. S. Saggini, W. Stefanutti, E. Tedeschi and P. Mattavelli, "Digital deadbeat control tuning for dc-dc converters using error correlation," IEEE Trans. Power Electron., Vol. 22, No. 4, pp. 1566-1570, Jul. 2007. https://doi.org/10.1109/TPEL.2007.902262
  12. H. G. Jeong, H. S. Roh, and K. B. Lee, "An Improved Maximum Power Point Tracking Method for Wind Power Systems," Energies, Vol. 5, No. 5, pp. 1339-1354, May 2012. https://doi.org/10.3390/en5051339
  13. Z. Wang and L. Chang, "A DC voltage monitoring and control method for three-phase grid-connected wind turbine inverters," IEEE Trans. Power Electron., Vol. 23, No. 3, pp. 1118-1125, May. 2008. https://doi.org/10.1109/TPEL.2008.921174
  14. Z. Wang, L. Chang and M. Mao, "Dc voltage sensorless control method for three-phase gridconnected inverters," IET Power Electron., Vol. 3, iss. 4, pp. 552-558, July. 2010. https://doi.org/10.1049/iet-pel.2008.0282

Cited by

  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