Design Optimization Study of Fault Tolerant and Redundant Motor Drivetrains for Urban Air Mobility Vehicles

Tallerico, Thomas Francis; Smith, Andrew Douglas; Chapman, Jeffryes Walter

doi:10.1109/iemdc55163.2023.10238867

Cited by 1 publication

(2 citation statements)

References 9 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In this paper, the motor efficiency and weight are chosen to have the same priority in the optimisation problem, which means that α = β = 0.5. The motor efficiency η mot is given by: η mot = P u P u + P copper + P core + P mech (19) where P u (W), P copper (W), P core (W), and P mech (W) are, respectively, the useful power, copper losses, core losses, and mechanical losses. Their respective expressions are given by:…”

Section: Problem Formulationmentioning

confidence: 99%

See 1 more Smart Citation

Design Optimisation Approach of an Outer Rotor Multiphase PM Actuator for Multirotor Aerial Vehicle Applications

Chahba,

Krebs,

Morel

et al. 2024

Aerospace

View full text Add to dashboard Cite

The electric urban air mobility sector has gained significant attraction in public debates, particularly with the proliferation of announcements demonstrating new aerial vehicles and the infrastructure that goes with them. In this context, the development of new methodologies for the design and sizing of actuation systems, ensuring high performances of these aerial vehicles, remains an important task in this process. This will allow for better integration within this transport sector. In this paper, a robust design optimisation approach of multiphase fault-tolerant (FT) outer rotor (OR) permanent magnets (PM) for multirotor aerial vehicle applications is proposed. In order to show the effectiveness and the robustness of the proposed design methodology, the number of stator winding phases, with a fractional slot concentrated winding (FSCW) configuration, as well as the PM configuration are considered as variables. Thus, four cases for the number of phases are considered, namely 3, 5, 6 and 7 phases, where for each number of phases case, the PM takes 3 configurations, namely surface PM, interior V-shape PM and interior spoke PM. First, a pre-sizing step is carried out, consisting of selecting the optimal combinations slot/pole, designing the multiphase FSCW layout, and estimating the electric motor (EM) geometry using analytical computations to obtain a preliminary validation of the design specifications. Second, constrained multiobjective optimisation is considered in order to optimise the EM performances, such as motor efficiency and weight, under constraints where the FEMM/Matlab based Finite Element Analysis (FEA) tool is used to perform this optimisation. Finally, results analysis and performance comparisons of different EM configurations are carried out in order to assess the design parameters, such as phases number, PM position, and harmonic currents in the EM design and consequently to select the best configuration for the considered application.

show abstract

Section: Problem Formulationmentioning

confidence: 99%

“…State of art regarding EM for eVTOLs applications are reported in [17][18][19][20], where the power and torque densities constraints are considered. NASA in [17] aims to present a design optimisation approach of 3-phase PM motors with an efficiency constraint higher than 96%, and a power density of 13 kw/kg for eVTOLs applications.…”

Section: Introductionmentioning

confidence: 99%