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Conception, optimisation et dimensionnement d'un micromoteur planaires à aimants permanent pour drones miniatures en vol stationnaire

Abstract : This thesis is about the design of a new generation of electrical motors, specially dedicated at driving miniature UAVs (less than 70 cm diameter). The entire electrical chain (batteries, converters, motors and propellers) was experimentally characterized and on the one hand, this has permitted to know the needed power for each element, and on the other hand, this has shown the necessity to design a light motor with high torque at low speed in order to directly drive a large propeller (50 cm diameter). The motor is a brushless one, with a planar permanent magnet rotor between two triphasis double-layer planar stator coils. After having modelled the motor with added aerodynamical and Eddy current losses models, the dimensioning was established with optimization tools (ProDesign and CDI_Optimizer, frameworks to dimension high constrained multi-physic problems). Two prototypes (50 mm and 70 mm diameter) were builded to induce 28 W mechanical power, at 50 µm gap between rotor and stator. Their characterization was carried out at 500 µm gap for technical reasons, and it validated the analytical model by comparaison with theoretical results obtained at 500 µm gap.In order to be more performing than usual electrical motors, a re-dimensioning is necessary at bigger gaps (500 µm) as well as the multiplication of number of wires per phase per poles (decreasing of eddy current effects).
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https://tel.archives-ouvertes.fr/tel-00011517
Contributor : Nicolas Achotte <>
Submitted on : Wednesday, February 1, 2006 - 12:48:24 PM
Last modification on : Friday, November 6, 2020 - 4:39:30 AM
Long-term archiving on: : Saturday, April 3, 2010 - 10:02:17 PM

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Nicolas Achotte. Conception, optimisation et dimensionnement d'un micromoteur planaires à aimants permanent pour drones miniatures en vol stationnaire. Autre. Université Joseph-Fourier - Grenoble I, 2005. Français. ⟨tel-00011517⟩

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