Fuzzy Logic Controller and Load Point Selection Based Fuel-Efficient Hybrid Controller for PSHEVs

The control of Hybrid Electric Vehicles (HEVs) has become one of the trend research topics due to continuous reduction of emission limits. Researchers put effort to combine different HEV powertrains and control strategies to achieve global emission restrictions via reducing fuel consumption without sacrificing performance and desired drivability. In this paper, a Fuzzy Logic Control (FLC) based control strategy is proposed for driving mode selection to operate engine only in required conditions. Besides, a Load Point Selection (LPS) algorithm based on engine’s Brake Specific Fuel Consumption (BSFC) characteristic is used to ensure the engine operation at the efficient region. The proposed hybrid controller algorithm is applied to power-split HEV architecture. The WLTP class-3 drive cycle is used for the validation of the proposed algorithm. The simulation results show the effectiveness of the proposed FLC and LPS based fuel-efficient hybrid control strategy for PSHEVs.