The Transactions of the Korean Institute of Power Electronics (전력전자학회논문지)

The Korean Institute of Power Electronics (전력전자학회)
권호 표지
DOI QR코드

DOI QR Code

Grid Connected Inverter of ESS for Seamless mode Transition

분산 발전 시스템에서 계통연계 인버터의 매끄러운 모드 전환

  • Hong, Chang-Pyo (Dept. of control & Instrumentation Eng., Korea Nat' Univ. of Transportation) ;
  • Kim, Hag-Wone (Dept. of control & Instrumentation Eng., Korea Nat' Univ. of Transportation) ;
  • Cho, Kwan-Yuhl (Dept. of control & Instrumentation Eng., Korea Nat' Univ. of Transportation)
  • Received : 2016.02.01
  • Accepted : 2016.07.08
  • Published : 2016.08.20
Download PDF
⟨ Previous Next ⟩

Abstract

In this paper, a voltage controller for the seamless transition of a grid-connected inverter for ESS is proposed. The single-phase inverter is operated as a current controller when the grid is connected and as a voltage controller in the stand-alone mode when the grid is disconnected. Generally, in the case of grid recovery, the overcurrent may flow into the system because of the mismatch phase between the inverter output and grid voltages. The proposed controller resolves the overcurrent problem through phase delay problems with initial value feed-forward control of the integrator when the grid voltage is restored. The effects of the control method are simulated through PSIM, and the usefulness of the control method is verified through experiments.

Keywords

References

  1. M. N. Arafat, S. Palle, Y. Sozer, and I. Husain, "Transition control strategy between standalone and grid connected operations of voltage-source inverters," IEEE Trans. on Industry Applications, Vol. 48, No. 5, pp. 1516-1525, Sep./Oct. 2012. https://doi.org/10.1109/TIA.2012.2210013
  2. D. J. Lee and L. Wang, "Small-signal stability analysis of an autonomous hybrid renewable energy power generation/energy storage system part 1: Time-domain simulations," IEEE Trans. on Energy Conversion, Vol. 23, No. 1, pp. 311-320, Mar. 2008. https://doi.org/10.1109/TEC.2007.914309
  3. J. B. kwon, S. J. Yoon, and S. W. Choi, "Indirect current control for seamless transfer of three phase utility interactive inverters," IEEE Trans. on power Electronic, Vol. 22, No. 2, pp. 773-781, Feb. 2012.
  4. M. J. Ryan, W. E. Brumsickle, and R. D. Lorenz, "Control topology options for single phase UPS inverter," IEEE Trans. on Industry Applications, Vol. 33, No. 2, pp. 493-501, Apr. 1997. https://doi.org/10.1109/28.568015
  5. H. M. Oh, S. W. Choi, T. H. Kim, and G. P. Lee, "Anti-islanding method by harmonic injection for utility interactive inverter with critical load," Trans. of KIPE, Vol. 17, No. 4 pp. 315-321, Aug. 2012.
  6. B. J. Byen, H. U. Seo, Y. G. Cho, and G. H. Choe, "A seamless mode transfer scheme for single phase inverter for ESS," Trans. of KIPE, Vol. 18, No. 6 pp. 579-586, Dec. 2013.
  7. J. H. Park, T. H. Jo, H. G. Kim, T. W. Chun, E. C. Nho, and H. N. Cha, "Comparison of current controllers of grid-connected PCS for distributed resources," Trans. of KIPE, Vol. 17, No. 3, pp. 274-280, Jun. 2012.