作者: Lei Chen , Hongkun Chen , Jun Yang , Yanjuan Yu , Kaiwei Zhen
DOI: 10.3390/EN10010056
关键词:
摘要: In regard to the rapid development of renewable energy sources, more and photovoltaic (PV) generation systems have been connected main power networks, it is critical enhance their transient performance under short-circuit faults conditions. This paper proposes studies coordinated control a flux-coupling-type superconducting fault current limiter (SFCL) magnetic storage (SMES), improve ride through (FRT) capability smooth fluctuation grid-connected PV system. Theoretical analyses device structure, operating principle strategy are conducted, detailed simulation model 100 kW class system built in MATLAB/SIMULINK. During simulations symmetrical asymmetrical faults, maximum point tracking (MPPT) disabled, four different cases including without auxiliary, with SFCL, SMES, SFCL-SMES, compared. From demonstrated results, combination MPPT SFCL-SMES can efficiently common coupling (PCC) voltage sag, inhibit DC-link overvoltage alleviate fluctuation. Finally, preliminary parameter optimization method suggested for SFCL helpful promote future application real projects.