基于规则修正的同轴并联混合动力客车瞬时优化能量分配策略

同轴并联混合动力客车因其动力总成构型较传统构型改动小、能量传递效率高且易于实现多模式运行而在公交客车领域得到广泛的应用。应对复杂瞬变的公交工况，如何设计高效的能量分配策略实现混合动力客车的高效节能已成为近期的研究热点。针对同轴并联构型混合动力客车建立逆向仿真模型，在分别对规则式能量分配策略和瞬时优化分配策略分析的基础上，考虑发动机切入/退出动力系统时机对于整车燃油经济性的影响，提出一种基于规则修正的瞬时优化能量分配算法。将发动机切入/退出判定引入到瞬时优化算法中，并对该策略进行仿真与道路试验验证。实车验证结果表明所提出的策略能够提升节油率约5%，是一种具有实际应用前景的并联混合动力客车能量管理方法。

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.