Modeling and Control of a Novel Power Split Hybrid Electric Vehicle

2014 ◽  
Author(s):  
Qadeer Ahmed ◽  
Haiwei Cai ◽  
Giorgio Rizzoni ◽  
Longya Xu
Keyword(s):  
Hybrid Electric Vehicle ◽  
Fuel Efficiency ◽  
Operating Mode ◽  
System Level ◽  
Operating Characteristics ◽  
Rule Based ◽  
Modeling And Control ◽  
High Fuel Efficiency ◽  
Power Split ◽  
Hybrid Electric

This paper presents a novel dual-clutch, transmission-less hybrid electric powertrain architecture using Dual Mechanical Port Machine (DMPM). The proposed architecture offers the vehicle to operate in four different modes i.e. charge depleting mode, charge sustaining mode, highway mode and braking mode. Power/energy flow in each operating mode is explored and operating characteristics of each prime mover in all four modes are analyzed. A detailed system level modeling is conducted for the proposed powertrain. The power split HEV offers a variety of control problems to insure its optimal performance. In this paper, a rule based control has been designed to meet some of the outlined control objectives. The simulation results show that the proposed HEV architecture with a rule based energy management scheme offers high fuel efficiency as compared to its conventional counterpart.

Engine optimal operation lines for power-split hybrid electric vehicles

2009 ◽  
Vol 223 (9) ◽  
pp. 1149-1162 ◽  
Author(s):  
Kukhyun Ahn ◽  
P Y Papalambros
Keyword(s):  
Hybrid Electric Vehicle ◽  
Degrees Of Freedom ◽  
Optimization Problems ◽  
Fuel Efficiency ◽  
Optimal Operation ◽  
High Fuel Efficiency ◽  
Power Split ◽  
Hybrid Electric ◽  
Management Optimization ◽  
Saving Mode

The powertrain of a hybrid electric vehicle (HEV) can be operated in either a power-boosting or an energy-saving mode. The first mode is used for responding to the driver's full-load demand and the second for achieving high fuel efficiency given an increased number of degrees of freedom in energy management. Optimization problems for the two operation modes are formulated, and the design spaces are analysed for general power-split architectures. Optimization results are presented and analysed for input-split and compound-split architectures. The analysis leads to the definition of a new concept of HEV optimal operation that improves the conventional idea of engine optimal operation line.

scholarly journals Power Flows in Compound Transmissions for Hybrid Vehicles

Machines ◽  
2019 ◽  
Vol 7 (1) ◽  
pp. 19 ◽  
Author(s):  
Stefano De Pinto ◽  
Giacomo Mantriota
Keyword(s):  
Hybrid Electric Vehicle ◽  
High Performance ◽  
Fuel Efficiency ◽  
Hybrid Vehicles ◽  
Operating Conditions ◽  
Preliminary Design ◽  
High Fuel Efficiency ◽  
Power Split ◽  
Variable Transmission ◽  
And Control

Hybrid electric vehicle (HEV) traction systems are the most promising technologies being characterized by high performance, high fuel efficiency, low emissions and long operating range. Significant improvements can be achieved equipping transmissions with variable transmission ratio such as power-split transmission and a compound power-split electric continuously variable transmission (eCVT). These systems have been introduced to improve vehicle global efficiency since they can maximize the efficiency in different operating conditions. Optimal design and control of these systems leads improvements in vehicles performance and mathematical models, which support the preliminary design phase, can play a key role in this field. In this work, the internal power circulations of “four-port-mechanical-power split device are determined through a dynamic analysis.” Finally, the efficiency of the compound transmission is analytically evaluated, assuming that the overall losses are linked to the eCVT variator.

Optimal Dual-Mode Hybrid Electric Vehicle Powertrain Architecture Design for a Variety of Loading Scenarios

2014 ◽  
Author(s):  
Alparslan Emrah Bayrak ◽  
Yi Ren ◽  
Panos Y. Papalambros
Keyword(s):  
Electric Vehicle ◽  
Hybrid Electric Vehicle ◽  
Fuel Efficiency ◽  
Architecture Design ◽  
Optimization Strategy ◽  
Passenger Cars ◽  
Hybrid Electric ◽  
Distribution Of Power ◽  
Architecture Development ◽  
Vehicle Powertrain

A hybrid-electric vehicle powertrain architecture consists of single or multiple driving modes, i.e., connection arrangements among engine, motors and vehicle output shaft that determine distribution of power. While most architecture development work to date has focused primarily on passenger cars, interest has been growing in exploring architectures for special-purpose vehicles such as vans or trucks for civilian and military applications, whose weights or payloads can vary significantly during operations. Previous findings show that the optimal architecture can be sensitive to vehicle weight. In this paper we investigate architecture design under a distribution of vehicle weights, using a simulation-based design optimization strategy with nested supervisory optimal control and accounting for powertrain complexity. Results show that an architecture under a single load has significant differences and lower fuel efficiency than an architecture designed to work under a variety of loading scenarios.

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