Digital PLL Control for Phase-Synchronization of Grid-Connected PV System

계통 연계형 태양광 발전 시스템의 위상 동기화를 위한 디지털 PLL 제어

  • 김용균 (경북대학교 전기공학과) ;
  • 최종우 (경북대학교 전자전기공학) ;
  • 김흥근 (경북대학교 전자전기공학부)
  • Published : 2004.09.01

Abstract

The frequency and phase angle of the utility voltage are important in many industrial systems. In the three-phase system, they can be easily known by using the utility voltage vector. However, in the case of single phase system, there are some difficulties in detecting the information of utility voltage. In conventional system, the zero-crossing detection method is widely used, but could not obtain the information of utility voltage instantaneously. In this paper, the new digital PLL control using virtual two phase detector is proposed with a detailed analysis of single-phase digital PLL control for utility connected systems. The experimental results under various utility conditions are presented and demonstrate an excellent phase tracking capability in the single-phase grid-connected operation.

Keywords

References

  1. Sakamoto S., Izumi T., Yokoyama T., Haneyoshi T., 'A new method for digital PLL control using estimated quadrature two phase frequency detection,' in PCC Osaka 2002 proceedings, Volume 2, pp. 671-676 https://doi.org/10.1109/PCC.2002.997599
  2. Guan-Chyu Hsieh, Hung, J.C., 'Phase-locked loop techniques loop techniques.A survey', IEEE Transaction on Industrial Electronics, Volume 43, Issue 6, Dec, 1996, pp. 609-615 https://doi.org/10.1109/41.544547
  3. Arruda, L.N., Silva, S.M., Filho, B.J.C., 'PLL structures for utility connected systems', in IAS'2001, Volume 4. pp. 2655-2660 https://doi.org/10.1109/IAS.2001.955993
  4. 김홍서 '3상 계통 연계 태양광 발전 시스템의 제어기 설계', 건국대학교 대학원 박사학위청구논문, 1998
  5. 유권종 외 '양방향성 PWM컨버터를 이용한 가정용 태양광 에어콘 시스템에 관한 연구', 대한전기학회논문지, 45권 3호, pp. 358-364
  6. 김태엽 외 '태양광 발전 시스템을 위한 새로운 최대 출력점 추종 제어 알고리즘', 대한전기학회논문지 51권 3호, pp. 133-141
  7. L.N. Arruda, B.J. Cardoso Filho, S.M. Silva,S.R.Silva, and A.S.A.C. Diniz, 'Wide bandwidth single and three-phase PLL atructures for grid-tied PV systems' in Proceeding of 228th IEEE Photovoltaic Specialists Conference, Anchorage(AK), pp. 1660-1663, September, 2000 https://doi.org/10.1109/PVSC.2000.916220
  8. S.C. Gupta, K. Venkatesan, K. Eapen, and P. Pradhan, 'A fast measuring Phase detector for use in PLL Motor control system' IEEE Tran. Ind. Electron Contr. IECI-25, pp. 75-76, 1978
  9. M. F. Lai and M. Nakano, 'Special Section on Phase-locked Loop Techniques,' IEEE Transactions on Industrial Electronics, Vol. 43, No. 6, December 1996, pp. 607-608 https://doi.org/10.1109/41.544546
  10. M. Karimi-KGhartemani and M.R. Iravani, 'An alternative structure for phase-locked loop(PLL) system,' IEEE Trans. Circuits Syst.submitted for publication