Study on energy absorption scheme of rail transit

Aiming at the braking and starting of rail transit, the braking energy recovery scheme was studied. The advantages and disadvantages of four energy absorption schemes were analyzed and compared, and one of the most promising energy absorption schemes was proposed. This energy absorption scheme has the advantages of bi-directional energy flow, convenient voltage regulation, fast dynamic response and adaptive orbit pressure variation. This program by a variety of two-way multi-level converter, the city rail train to achieve the absorption of braking energy, start-up to add energy. The program of the control system to improve urban rail transit reliability and traction performance, while achieving regenerative braking power absorption.