Rule correction-based instantaneous optimal energy management strategy for single-shaft parallel hybrid electric bus

The single-shaft parallel hybrid electric bus(PHEB) have been widely used for its simple construction, high-efficiency and flexible multi-mode. For complex and volatile driving conditions, how to distribute the energy reasonable to achieve high energy efficiency has being a hotspot. A backward simulation model is established for this construction, and a rule-based instantaneous optimal strategy is proposed under the analysis of the two strategies: rule based strategy and instantaneous optimal strategy. What's more, the influence caused by the engine cutting in/out the power train is taken into account and brought into the simulation. The result show that the proposed strategy can further improve the fuel economy and has the potential to actual application.