Configuration Design and Optimization of a Novel Two-Mode Compound Power-Split Hybrid System

Through the analysis of a CHS (Chinese hybrid system) compound power-split configuration, it is found that enhancing the system’s speed decoupling ability can reduce the electric power loss, optimize the engine operating point distribution, and enhance the vehicle dynamics. This paper proposes a novel compound power-split configuration with a two-speed AMT (Automated manual transmission), which includes an electric-vehicle mode, a low-speed power-split mode, and a high-speed power-split mode. First, the electric power characteristics and rotational speed/torque characteristics of the CHS compound power-split configuration are analyzed using the lever method, theoretically demonstrating the rationality of the two-speed AMT+ compound power-split configuration. Then, the genetic algorithm is employed to optimize the multi-parameters and multi-objectives in terms of the vehicle dynamics and economy. Finally, a comparative simulation and analysis of the vehicle’s economic and dynamic properties is performed for the new two-speed AMT+ compound power-split configuration and the original CHS compound power-split configuration. The results show that the vehicle economy is increased by 6.9 % for the new configuration, the acceleration time per 100 kilometers is decreased by 27.5 %, and the maximum speed is increased by 13.2 %.

[1]  Maarten Steinbuch,et al.  Review of Optimization Strategies for System-Level Design in Hybrid Electric Vehicles , 2017, IEEE Transactions on Vehicular Technology.

[2]  Maurice B. Leising,et al.  The Lever Analogy: A New Tool in Transmission Analysis , 1981 .

[3]  Theo Hofman,et al.  Functional and Cost-Based Automatic Generator for Hybrid Vehicles Topologies , 2015, IEEE/ASME Transactions on Mechatronics.

[4]  Fuyuan Yang,et al.  Optimization of compound power split configurations in PHEV bus for fuel consumption and battery degradation decreasing , 2019, Energy.

[5]  Hongwen He,et al.  Methodology for Optimal Sizing of Hybrid Power System Usingparticle Swarm Optimization and Dynamic Programming , 2015 .

[6]  Jung Hun Kang,et al.  Design of power split transmission: Design of dual mode power split transmission , 2010 .

[7]  Dongsuk Kum,et al.  Comprehensive Design Methodology of Input- and Output-Split Hybrid Electric Vehicles: In Search of Optimal Configuration , 2016, IEEE/ASME Transactions on Mechatronics.

[8]  Behrooz Mashadi,et al.  Dual-Mode Power-Split Transmission for Hybrid Electric Vehicles , 2010, IEEE Transactions on Vehicular Technology.

[9]  Jing Sun,et al.  A Near-Optimal Power Management Strategy for Rapid Component Sizing of Multimode Power Split Hybrid Vehicles , 2015, IEEE Transactions on Control Systems Technology.

[10]  Wei Hua Wang,et al.  Analysis on compound-split configuration of power-split hybrid electric vehicle , 2014 .

[11]  Xiaowu Zhang,et al.  Rapid Configuration Design of Multiple-Planetary-Gear Power-Split Hybrid Powertrain via Mode Combination , 2016, IEEE/ASME Transactions on Mechatronics.

[12]  Xiaosong Hu,et al.  Comparison of power-split and parallel hybrid powertrain architectures with a single electric machine: Dynamic programming approach , 2016 .

[13]  Xiaowu Zhang,et al.  Comparison of multi-mode hybrid powertrains with multiple planetary gears , 2016 .

[14]  Panos Y. Papalambros,et al.  Decomposition-Based Design Optimization of Hybrid Electric Powertrain Architectures: Simultaneous Configuration and Sizing Design , 2016 .

[15]  John Nellthorp,et al.  Total cost of ownership and market share for hybrid and electric vehicles in the UK, US and Japan , 2018 .

[16]  Hong-Sen Yan,et al.  Configuration synthesis of series–parallel hybrid transmissions , 2016 .

[17]  Hyunsoo Kim,et al.  Fuel economy potential for a power split type hybrid system with 4-speed transmission by adding parallel mode , 2018, 2018 Thirteenth International Conference on Ecological Vehicles and Renewable Energies (EVER).

[18]  Hong-Sen Yan,et al.  Configuration synthesis of parallel hybrid transmissions , 2016 .

[19]  Long Chen,et al.  Control design and fuel economy investigation of power split HEV with energy regeneration of suspension , 2016 .

[20]  Datong Qin,et al.  Analysis and Optimization of a Novel Power-Split Hybrid Powertrain , 2019, IEEE Transactions on Vehicular Technology.

[21]  Wang Che.  Structure Optimization and Its Validation for Compound Power-split e-CVT , 2015 .

[22]  Jing Sun,et al.  Design of Multimode Power-Split Hybrid Vehicles—A Case Study on the Voltec Powertrain System , 2016, IEEE Transactions on Vehicular Technology.

[23]  Dongsuk Kum,et al.  Impact of Speed Reduction (Multiplication) Gear on the Performance of Input- and Output-Split Hybrid Electric Vehicles , 2017 .

[24]  Bernd Becker,et al.  A Simulation-Based Comparison of Different Power Split Configurations with Respect to the System Efficiency , 2012 .

[25]  Dongpu Cao,et al.  Configuration optimization for improving fuel efficiency of power split hybrid powertrains with a single planetary gear , 2018 .

[26]  Suk Won Cha,et al.  Analysis of planetary gear hybrid powertrain system part 2: Output split system , 2009 .

[27]  Yi Ren,et al.  Topology Generation for Hybrid Electric Vehicle Architecture Design , 2016 .

[28]  Dongsuk Kum,et al.  Compound Lever Based Optimal Configuration Selection of Compound-Split Hybrid Vehicles , 2017 .