Power unit test of the series hybrid propulsion system for bimodal tram using active loader

摘要

A bimodal tram is being developed to combine the flexibility of a bus with the punctuality of a train. The propulsion system of the bimodal tram is a series hybrid-type that uses a set of CNG engine generators and Li-polymer batteries. This paper presents the results of the experiments conducted on a series hybrid propulsion power unit using an active loader which can simulate the continuous powering and regenerative braking conditions of the propulsion system. The power sharing scheme between the PWM converter and the battery pack is also observed, and the measurement results of DC link voltage and the SOC (State Of Charge) of the battery pack are presented.