Fuel Consumption and Emission Reduction in a Hybrid Electric Bus Through Peak Power Management of the Auxiliary Power Unit

Publish Year: 1402
نوع سند: مقاله ژورنالی
زبان: English
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شناسه ملی سند علمی:

JR_IJAEIU-13-3_005

تاریخ نمایه سازی: 4 دی 1402

Abstract:

This study examines the impact of a fuzzy logic-based control strategy on managing peak power consumption in the auxiliary power unit (APU) of a hybrid electric bus. The APU comprises three components: an air compressor, a power steering system, and an air conditioning system (AC) connected to an electric motor. Initially, these components were simulated in MATLAB-SIMULINK software. While the first two were deemed dependent and independent of vehicle speed, respectively, the stochastic behavior of the steering was emulated using the Monte Carlo method. Subsequently, a fuzzy controller was designed and incorporated into the APU to prevent simultaneous operation of the three accessories as much as possible. The results of repeated simulations demonstrated that the designed fuzzy controller effectively distributed the operation of the accessories throughout the driving cycle, thereby reducing overlaps in auxiliary loads. Consequently, the APU's average and maximum power consumption exhibited significant reductions. Furthermore, through multiple simulations with an upgraded power system model integrating the new APU-controller package, it was established that the proposed strategy for managing auxiliary loads in the bus led to lower fuel consumption and emissions.

Authors

Hosein Hamidi Rad

Department of Mechanical Engineering, Isfahan University of Technology, Isfahan, Iran

Mohsen Esfahanian

Department of Mechanical Engineering, Isfahan University of Technology, Isfahan, Iran

Saeed Behbahani

Department of Mechanical Engineering, Isfahan University of Technology, Isfahan, Iran

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