Vehicle Design
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The Electric Vehicle Design page hosts a collection of resources aimed at exploring the evolving architecture of electric vehicles. Featuring reports, research papers, and industry insights, this section delves into how EV design is transforming traditional vehicle structures, from battery placement to lightweight materials and aerodynamics. Whether you're focused on the technical or aesthetic aspects of EV design, these materials provide a wealth of knowledge to help shape the future of electric vehicle innovation.
Design and optimisation of energy-efficient PM-assisted synchronous reluctance machines for electric vehicles
The design and optimisation of a permanent magnet-assisted synchronous reluctance (PMaSynR) traction machine is described to improve its energy efficiency over a selection of driving cycles, when installed on a four-wheel-drive electrically powered vehicle for urban use, with two on-board powertrains. The driving cycle-based optimisation is defined with the objective of minimising motor energy loss under strict size constraints, while maintaining the peak torque and restricting the torque ripple. The key design parameters that exert the most significant influence on the selected performance indicators are identified through a parametric sensitivity analysis. The optimisation brings a motor design that is characterised by an energy loss reduction of 8.2% over the WLTP Class 2 driving cycle and 11.7% over the NEDC and Artemis Urban driving cycles, at the price of a 4.7% peak torque reduction with respect to the baseline machine. Additional analysis, implemented outside the optimisation framework, revealed that different coil turn adjustments would reduce the energy loss along the considered driving cycles. However, under realistic size constraints, the optimal design solutions are the same.
Automotive Designers, Automotive Engineers, Electric Powertrain Researchers, EV Manufacturers