https://opus.lib.uts.edu.au/bitstream/10453/122645/4/OCC-112847_AM.pdf

A comparative study energy consumption and costs of battery electric vehicle transmissions

Tribology of electric vehicles: A review of critical components, current state and future improvement trends

https://opus.lib.uts.edu.au/bitstream/10453/60379/1/MSSP_paper_Revised.pdf

Powertrain dynamics and control of a two speed dual clutch transmission for electric vehicles

Numerical and experimental investigation of drag torque in a two-speed dual clutch transmission

Efficiency comparison of electric vehicles powertrains with dual motor and single motor input

As pure electric vehicles are considered to be a major growth trend in the automotive industry, research into and development of efficient electric powertrain systems and related control technologi...

Gear shift schedule design for multi-speed pure electric vehicles

Dual clutch transmissions (DCTs) are recognized as being suitable for electric drive applications as they can drive with high efficiency and achieve good shifting comfort. A two-speed DCT electric drivetrain is described in this paper, comprised of only two gear pairs and a final drive gear in the two-speed gearbox. The fundamental shifting control algorithm is provided. On the testing rig of University of Technology, Sydney (UTS) powertrain lab, shifting controls and some driving cycle controls were realized. The results demonstrated that the control algorithm functioned well both in transient shifting control process and in the driving cycle conditions.

/pdf/two-speed-dct-electric-powertrain-shifting-control-and-rig-30vljpx47i.pdf

Two-Speed DCT Electric Powertrain Shifting Control and Rig Testing:

Performance Improvement of a Two Speed EV through Combined Gear Ratio and Shift Schedule Optimization

This article develops a systematic model to study electric vehicle powertrain system efficiency by combining a detailed model of two-speed dual-clutch transmission system efficiency losses with an electric vehicle powertrain system model. In this model, the design factors including selection of the electric machine, gear ratios’ change, multi-plate wet clutch design, and gear shift schedule design are considered. Meanwhile, the application of detailed model for drag torque losses in the gearbox is discussed. Furthermore, the proposed model, developed with the MATLAB/Simulink platform, is applied to optimize/maximize the efficiency of the electric vehicle powertrain system using genetic algorithms. The optimization results demonstrate that the optimal results are different between simulations via New Europe Drive Cycle and Urban Dynamometer Driving Schedule, and comprehensive design and optimization of the powertrain system are necessary.

/pdf/comprehensive-design-and-optimization-of-an-electric-vehicle-42viwas4na.pdf

Xingxing Zhou

Papers

Numerical and experimental investigation of drag torque in a two-speed dual clutch transmission

Gear shift schedule design for multi-speed pure electric vehicles

Two-Speed DCT Electric Powertrain Shifting Control and Rig Testing:

Performance Improvement of a Two Speed EV through Combined Gear Ratio and Shift Schedule Optimization

Comprehensive design and optimization of an electric vehicle powertrain equipped with a two-speed dual-clutch transmission: