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Model Predictive Control for Hybrid Electric Vehicles with Linear Parameter-Varying Model

This paper proposes to design a controller to improve a fuel economy of a power-split hybrid electric vehicle using model predictive control with linear parameter-varying systems. A power-split combines the best point of both series and parallel hybrid vehicles, and can drive a generator to charge a battery by dividing engine power by using a planetary gear set. Conventional researches have proposed control methods on the basis of the driving cycle to improve the fuel economy of hybrid electric vehicles. However, the methods depend on the driving cycle. Therefore, we use model predictive control to refine the fuel economy of hybrid electric vehicles, and consider a hybrid electric vehicle model with the vehicle speed as a parameter since dynamics on each drive unit of hybrid electric vehicles fluctuate depending on the vehicle speed. We evaluate the effectiveness and performance of our proposed method using MATLAB and Simulink.