Coordinated Control of Multiple Wayside Energy Storage Systems Based on Fuzzy Logic Algorithm

With the rapid development of urban rail transit, installing multiple wayside energy storage systems for regenerative braking energy recovery has become a hotspot.This paper analyses the energy flow in urban rail transit installing multiple energy storage systems in both short-time and long-time scales.Furthermore, a coordinated control strategy of multiple energy storage systems based on fuzzy logic algorithm is proposed to realize the adaptive adjustment of charging/discharging thresholds according to the traction network voltage and ESS operation state.Finally, a case study is conducted to verify the effectiveness of the proposed coordinated control strategy.