TY - JOUR
T1 - Direct connection of supercapacitor-battery hybrid storage system to the grid-tied photovoltaic system
AU - Perdana, Yoga Sandi
AU - Muyeen, S. M.
AU - Al-Durra, Ahmed
AU - Morales-Paredes, Helmo Kelis
AU - Simoes, Marcelo Godoy
N1 - Funding Information:
Manuscript received February 19, 2018; revised June 6, 2018 and July 31, 2018; accepted August 10, 2018. Date of publication August 31, 2018; date of current version June 20, 2019. This work was supported in part by the São Paulo Research Foundation under Grants 2016/08645-9 and 2017/22629-9. Paper no. TSTE-00144-2018. (Corresponding author: S. M. Muyeen.) Y. S. Perdana and A. Al-Durra are with the Electrical Engineering Department, Khalifa University of Science and Technology, Abu Dhabi, UAE (e-mail:, [email protected]; [email protected]).
Publisher Copyright:
© 2018 IEEE.
PY - 2019/7
Y1 - 2019/7
N2 - Penetration rate of grid-connected photovoltaic (PV) generation to the existing utility grid is rapidly increasing over the years. Since the power generated from PV systems fluctuates according to the weather condition, e.g., cloud passing, this can significantly disturb the stability of a weak utility grid. The integration of energy storage devices and its ramp-rate control technique are required to reduce the impact of PV systems output fluctuations and augment the stability of the utility grid. In this paper, ramp-rate control is applied to the direct connection of energy storage devices in PV generation system configuration. The direct connection of supercapacitors string and battery combination scheme is proposed to reduce the number of power converters so that the efficiency of the system is increased. In this work, the PV system output is controlled by directly controlling the energy storage system (ESS) to limit the changing rate of the PV output to a desired ramp-rate value, hence reducing the battery charge/discharge cycles and extending the expected lifetime of the ESS. The performance of the proposed direct connection scheme of the ESS and its ramp-rate control strategy is verified using a 1-kW PV system prototype.
AB - Penetration rate of grid-connected photovoltaic (PV) generation to the existing utility grid is rapidly increasing over the years. Since the power generated from PV systems fluctuates according to the weather condition, e.g., cloud passing, this can significantly disturb the stability of a weak utility grid. The integration of energy storage devices and its ramp-rate control technique are required to reduce the impact of PV systems output fluctuations and augment the stability of the utility grid. In this paper, ramp-rate control is applied to the direct connection of energy storage devices in PV generation system configuration. The direct connection of supercapacitors string and battery combination scheme is proposed to reduce the number of power converters so that the efficiency of the system is increased. In this work, the PV system output is controlled by directly controlling the energy storage system (ESS) to limit the changing rate of the PV output to a desired ramp-rate value, hence reducing the battery charge/discharge cycles and extending the expected lifetime of the ESS. The performance of the proposed direct connection scheme of the ESS and its ramp-rate control strategy is verified using a 1-kW PV system prototype.
KW - hybrid energy storage
KW - MPPT
KW - Photovoltaic
KW - ramp-rate control
UR - http://www.scopus.com/inward/record.url?scp=85052806962&partnerID=8YFLogxK
U2 - 10.1109/TSTE.2018.2868073
DO - 10.1109/TSTE.2018.2868073
M3 - Article
AN - SCOPUS:85052806962
SN - 1949-3029
VL - 10
SP - 1370
EP - 1379
JO - IEEE Transactions on Sustainable Energy
JF - IEEE Transactions on Sustainable Energy
IS - 3
M1 - 8452994
ER -
