Application and Control of Hybrid Energy Storage System with Improved MPC in Regenerative Braking Energy Storage of High-speed Railway
Aiming at the problem that a large amount of regenerative braking energy can not be effectively utilized in the brak-ing process of high-speed railway,an energy storage scheme and its control method of hybrid energy storage system based on im-proved MPC are proposed.In this scheme,the railway power regulator(RPC)is used as the interface circuit,the hybrid energy stor-age device is connected to the traction power supply system,the hybrid energy storage medium of super capacitor and battery is used,and the DC side of the railway power regulator is connected through two-way DC/DC converter,so as to effectively recover and utilize the regenerative energy generated by the high-speed railway traction power supply system.The improved MPC hybrid en-ergy storage system control strategy can better solve the problem of negative sequence and harmonic current compensation after the hybrid energy storage device is connected to the traction power supply system.The simulation results show that the proposed energy recovery scheme can effectively recover and utilize the regenerative braking energy generated by high-speed train under typical working conditions,effectively control the negative sequence and harmonic current generated in the braking process,and improve the power quality at the power grid side.
high-speed railregenerative brakingmixed energy storageRPCmodel predictive control
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