Bi-level convex optimization of eco-driving for connected Fuel Cell Hybrid Electric Vehicles through signalized intersections

Eco-driving for connected Fuel Cell Hybrid Electric Vehicles (FCHEVs) is a coupled problem of speed planning and energy management. To reduce the computational burden, bi-level optimization decouples and hierarchically solves the upper-level and lower-level subproblems. This paper proposes a bi-leve...

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Bibliographic Details
Published in:Energy (Oxford) 2022-08, Vol.252, p.123956, Article 123956
Main Authors: Liu, Bo, Sun, Chao, Wang, Bo, Liang, Weiqiang, Ren, Qiang, Li, Junqiu, Sun, Fengchun
Format: Article
Language:English
Subjects:
Algorithms
Bi-level convex optimization
Computational efficiency
Computational geometry
Computer applications
Computing costs
Computing time
Convexity
Cost function
Driving
Driving ability
Dynamic programming
Eco-driving
Electric vehicles
Energy efficiency
Energy management
Fuel cell hybrid electric vehicle
Fuel cells
Fuel consumption
Fuel economy
Fuel technology
Hybrid electric vehicles
Intersections
Optimization
Signalized intersection
Traffic signals
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Summary:Eco-driving for connected Fuel Cell Hybrid Electric Vehicles (FCHEVs) is a coupled problem of speed planning and energy management. To reduce the computational burden, bi-level optimization decouples and hierarchically solves the upper-level and lower-level subproblems. This paper proposes a bi-level convex approach for eco-driving of a connected FCHEV proceeding through multiple signalized intersections. On the upper level, the non-linear traffic light constraints are transformed into time-varying linear state constraints and the cost function becomes quadratic after using the average speed. On the lower level, model convexification is carried out for the fuel cell system and battery. Then the upper-level speed planning and lower-level energy management are sequentially solved by the MOSEK solver and the Alternating Direction Method of Multipliers (ADMM) algorithm. The results show that the proposed bi-level convex approach greatly reduces the computational cost while maintaining high energy efficiency, with only 6.59% computational time and almost the same fuel economy compared to the bi-level Dynamic Programming (DP) method. •Bi-level convex optimization of eco-driving is proposed.•Upper-level speed planning is constructed as a convex quadratic programming problem.•Lower-level energy management is solved by the ADMM algorithm.•A comparison of the proposed method and benchmarking methods is conducted.
ISSN:0360-5442
1873-6785
DOI:10.1016/j.energy.2022.123956