Traction control–integrated energy management strategy for all-wheel-drive plug-in hybrid electric vehicle

Abstract

Plug-in hybrid electric vehicle is one of the potential candidates to tackle the stringent fuel economy standards. Many previous studies focus on optimal fuel economy by coordinating primary power source and assistant power source in plug-in hybrid electric vehicles, which usually neglects vehicle dynamic performance. All-wheel-drive plug-in hybrid electric vehicle has advantages both in fuel economy and dynamic performance. However, when all-wheel-drive plug-in hybrid electric vehicle is traveling on low cohesive roads, how to balance the conflict between traction performance and fuel economy undoubtedly will be the crucial problem. To address the issue, an integrated control strategy is proposed for all-wheel-drive plug-in hybrid electric vehicle in this article, namely, traction control system-integrated energy management strategy. A charge depletion/charge sustaining strategy is employed to realize the torque distribution mainly according to the engine optimal working region to achieve better fuel economy. Traction control system is integrated to prevent slipping of the wheels during starting and acceleration by applying engine throttle control, motor torque control, and active braking control, which improves the vehicle dynamic performance. The traction enhancement is beneficial to the improvement of fuel efficiency. By the co-simulation of MATLAB/Simulink and AMESim, the results demonstrate the effectiveness of the proposed integrated control strategy, which increases the vehicle velocity greatly and optimizes fuel economy as well.

A stochastic optimal energy management strategy considering battery health for hybrid electric bus

“…44 In fact, the critical state to power management is the slowly varying SOC of the battery. 45 Therefore, it is necessary to establish a simplified control-oriented model that can reflect the relationship among the voltage, resistance, and SOC. In this paper, the battery model is simplified as an open circuit voltage in series with internal resistance without taking the influence of temperature change into consideration.…”

Advanced powertrain dynamic modelling and control for electrified vehicles

“…10 Similarly, the paper 'Traction control-integrated energy management strategy for all-wheel-drive plug-in hybrid electric vehicle' presents an integrated engine throttle, motor torque and active braking control strategy for an all-wheeldrive plug-in hybrid electric vehicle, which improves the hybrid vehicle's traction control performance and fuel efficiency. 11 Considering the influence of temperature variation, the paper 'Research on energy management of hybrid energy storage system for electric bus' presents a convex optimization-based energy management approach for a semi-active hybrid energy storage system in electric bus, by which minimum energy consumption, and maximum discharge as well as charge depth of super capacitor, can be simultaneously achieved. 12 The paper 'Study on stability and handling characteristics and control of four-wheel-drive electric vehicles' investigates the stability and handling performance of four-wheel-drive electric vehicles by using cosimulation studies with Simulink and CarSim.…”

Design of Optimized Energy Management Strategy for All-Wheel-Drive Electric Vehicles

“…The results show that A-ECMS achieves better fuel economy than regular ECMS. Song [15] proposed a charge depletion/charge sustaining strategy for an all-wheel-drive plug-in hybrid electric vehicle to realize the torque distribution mainly according to the engine optimal working region to achieve better fuel economy. The traction enhancement is beneficial to the improvement of fuel efficiency.…”