DOI QR코드

DOI QR Code

Control Strategies of Mobility Charging Systems Using PV-ESS Systems

태양광 발전과 에너지저장시스템을 활용한 모빌리티 충전 시스템의 제어 방법

  • Kim, Dae-Won (Dept. of Electronic & Electrical Engineering, Hongik University) ;
  • Lee, Hyeon-Min (Dept. of Electronic & Electrical Engineering, Hongik University) ;
  • Park, Sung-Min (Dept. of Electronic & Electrical Engineering, Hongik University)
  • Received : 2021.04.29
  • Accepted : 2021.06.08
  • Published : 2021.10.20

Abstract

Operation modes and control strategies for single-phase mobility charging station utilizing photovoltaic (PV) generation and energy storage systems (ESS) are proposed. This approach generates electric power from PV to transmit the mobility, ESS, and then transfer it to the grid when surplus electric power is generated during daytime. However, the PV power cannot be generated during night-time, and ESS and the mobility system can be charged using grid power. The power balance control based on power fluctuations and the resonant current control that can compensate harmonic components have been added to increase the stability of the system. The MATLAB/Simulink simulation was carried out to verify the proposed control method, and the 2-kW single-phase grid-tied PV-ESS smart mobility charger was built and tested.

Keywords

Acknowledgement

본 논문은 2020년도 산업통상자원부의 '창의산업융합 특성화 인재양성사업'의 지원을 받아 연구되었음. (과제번호 N0000717) 본 연구는 정부(과학기술정보통신부)의 재원으로 한국연구재단의 지원을 받아 수행된 연구임. (No. 2020R1F1A1071598)

References

  1. S. Y. Hong, "A plan to introduce smart mobility service in Seoul," Policy Report, pp. 1-28, 2020.
  2. M. T. Oh, "Cases and strategies for establishing a smart city in Sejong City," Urban Planners, Vol. 7, No. 2, pp. 21-28, 2020.
  3. J. C. Kim and H. J. Cha, "A novel voltage control MPPT algorithm using variable step size based on P&O method," The Transactions of the Korean Institute of Power Electronics, Vol. 25, No. 1, pp. 29-36, Feb. 2020. https://doi.org/10.6113/TKPE.2020.25.1.29
  4. D. Ryu, Y. J. Kim, and H. Kim, "Optimum MPPT control period for actual insolation condition," The Transactions of the Korean Institute of Power Electronics, Vol. 24, No. 2, pp. 99-104, Apr. 2019. https://doi.org/10.6113/TKPE.2019.24.2.99
  5. S. I. Paeng, J. U. Lim, and G. H. Choe, "Development of 3.3kW PV ESS system with DC power supply function," Journal of the Korean Institute of Illuminating and Electrical Installation Engineers, Vol. 31, No. 11, pp. 119-130, Nov. 2017. https://doi.org/10.5207/JIEIE.2017.31.11.119
  6. J. H. Kim, S. T. Jou, and K. B. Lee, "An improved battery charging algorithm for PV battery chargers," The Transactions of the Korean Institute of Power Electronics, Vol. 18, No. 6, pp. 507-514, Dec. 2013. https://doi.org/10.6113/TKPE.2013.18.6.507
  7. D. Li, S. Ji, X. Huang, J. Palmer, F. Wang, and L. M. Tolbert, "Controller development of an asynchronous microgrid power conditioning system (PCS) converter considering grid requirements," in IEEE Applied Power Electronics Conference and Exposition (APEC), New Orleans, LA, USA, pp. 616-621, 2020.
  8. H. V. Nguyen, D. H. Park, and D. C. Lee, "Single-phase transformerless PV power conditioning systems with low leakage current and active power decoupling capability," Jounal of Power Electronics, Vol. 18, No. 4, pp. 997-1006, 2018.
  9. M. Liserre, R. Teodorescu, and F. Blaabjerg, "Multiple harmonics control for three-phase grid converter systems with the use of PI-RES current controller in a rotating frame," IEE Transactions on Power Electronics, Vol. 21, No. 3, pp. 836-841, Jul. 2006. https://doi.org/10.1109/TPEL.2006.875566
  10. A. Elrayyah, A. Safayet, Y. Sozer, I. Husain, and M. Elbuluk, "Efficient harmonic and phase estimator for single-phase grid-connected renewable energy systems," IEEE Transactions on Industry Applications, Vol. 50, No. 1, pp. 620-630, Feb. 2013. https://doi.org/10.1109/TIA.2013.2266392
  11. U. S. Seong and S. H. Hwang, "A study on current ripple reduction due to offset error and dead-time effect of single-phase grid-connected inverters based on PR controller," in Proceedings of the KIPE Conference, pp. 157-158, Nov. 2014.
  12. Y. Riffonneau, S. Bacha, F. Barruel, and S. Ploix, "Optimal power flow management for grid connected PV systems with batteries," IEEE Transactions on Sustainable Energy, Vol. 2, No. 3, pp. 309-320, Jul. 2011. https://doi.org/10.1109/TSTE.2011.2114901
  13. J. Umuhoza, Y. Zhang, S. Zhao, and H. A. Mantooth, "An adaptive control strategy for power balance and the intermittency mitigation in battery-PV energy system at residential DC microgrid level," in IEEE Applied Power Electronics Conference and Exposition (APEC), Tampa, FL, USA, pp. 1341-1345, 2017.
  14. S. M. Park and S. Park, "Power weakening control of the photovoltaic-battery system for seamless energy transfer in microgrids," in IEEE Applied Power Electronics Conference and Exposition (APEC), Long Beach, CA, USA, pp. 2971-2976, 2013.
  15. Y. Gu, Y. Wang, X. Xiang, W. Li, and X. He, "Improved virtual vector control of single-phase inverter based on unified model," IEEE Transactions on Energy Conversion, Vol. 29, No. 3, pp. 611-618, Sep. 2014. https://doi.org/10.1109/TEC.2014.2323974