Load cycle test of a series hybrid propulsion system for a bimodal tram using active load/source

초록

A bimodal transport system combining the benefits of the punctuality of railroad and the accessibility of bus has recently emerged worldwide as an advanced means of public transportation. This system, compared to the subway and light railway transit systems, has the advantage of cost-efficiency with a relatively reduced construction schedule and a low-cost infrastructure. In addition, the low-floor structure and environment-friendly traction system has led to it becoming the most desirable public transport system. This paper introduces a series hybrid propulsion system for the bimodal tram and the experimental results conducted using an active load/source which can simulate the continuous powering and regenerative braking conditions of the propulsion system. The power sharing scheme between the power conditioner 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.