Design of an energy management strategy for parallel hybrid electric vehicles using a logic threshold and instantaneous optimization method |
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Authors: | Y- J Huang C- L Yin J- W Zhang |
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Institution: | (1) Institute of Automotive Engineering, Shanghai Jiao Tong University, ShangHai, 200240, China |
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Abstract: | A novel parallel hybrid electric vehicle (PHEV) configuration consisting of an extra one-way clutch and an automatic mechanical
transmission (AMT) is taken as the study subject of this paper. An energy management strategy (EMS) combining a logic threshold
approach and an instantaneous optimization algorithm is developed for the investigated PHEV. The objective of this EMS is
to achieve acceptable vehicle performance and drivability requirements while simultaneously maximizing engine fuel economy
and maintaining the battery state of charge (SOC) in its rational operation range at all times. Under the MATLAB/Simulink
environment, a computer simulation model of the studied PHEV is established using the bench test results. Simulation results
for the behavior of the engine, motor, and battery illustrate the potential of the proposed control strategy in terms of fuel
economy and in keeping the deviations of SOC at a low level. |
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Keywords: | Parallel hybrid electric vehicle (PHEV) energy management strategy (EMS) logic threshold control strategy (LTCS) instantaneous optimization |
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