Modeling of Hybrid EMUs and Rule-Based Energy Management Strategy

In recent years, railway transportation has developed rapidly, and in order to cope with sustainable development, hybrid power systems (HPS) are applied in rail transportation to achieve energy saving and environmental protection. In the de-sign of hybrid electric multiple units (EMUs), most of them use a combination of diesel generator (DG) sets and energy storage devices to provide energy for the load from multiple power sources. In this paper, firstly, the HPS is modeled, and the DG, power battery and traction system are established. Secondly, a rule-based energy management strategy is designed, which formulates the operation rules of the HPS according to the operating characteristics and status of the power battery and DG set, which can be used to ensure the reliable operation of the system with low fuel consumption under various operating conditions. Finally, simulation experiments are conducted to verify the effectiveness and reliability of the proposed method.