This paper investigates MMTO methods to design 3-phase PMSM stators, showing that a usual gradient descent leads to non-manufacturable local optima. A multi-material density filtering consistent with the antiperiodic boundary conditions smooths the structure and promotes a broader exploration of solutions. A current angle adjustment accelerates the...
Published in Methods in molecular biology (Clifton, N.J.)
The bacterial flagellum employs a rotary motor embedded on the cell surface. The motor consists of the stator and rotor elements and is driven by ion influx (typically H+ or Na+) through an ion channel of the stator. Ion influx induces conformational changes in the stator, followed by changes in the interactions between the stator and rotor. The dr...
Hairpin technology is increasingly replacing round wire winding technology in stator production for electric traction motors. The laser contacting of a large number of flat conductor connections is a quality-sensitive process with high reject rates. A new solution dimension for geometric welding preparation without clamping fixtures is being develo...
Published in Methods in molecular biology (Clifton, N.J.)
The flagellar motor of marine Vibrio is driven by the sodium-motive force across the inner membrane. The stator complex, consisting of two membrane proteins PomA and PomB, is responsible for energy conversion in the motor. To understand the coupling of the Na+ flux with torque generation, it is essential to clearly identify the Na+-binding sites an...
We describe a setup able to generate a rotating or alternating low-frequency (up to 10 Hz) magnetic field (up to 120 mT) for biological applications inside a 6 cm in diameter and 5 cm in height cylindrical space. It is suitable to insert several Petri dishes for cell death experiments and mice for in vivo ones. Since a particular attention was give...
La sophistication et la multiplication des systèmes de production de l'énergie électrique de nos jours, caractérisent les évolutions technologiques ainsi que celles des sociétés humaines. L'énergie électrique provenant des systèmes de production est un facteur essentiel pour le développement et l’amélioration des conditions de vie et des activités ...
Cette thèse expérimentale est consacrée à l’étude du refroidissement par impact de jet d’huile et trouve son application dans le développement des moteurs électriques pour le secteur automobile. Un tel système n’ayant jamais fait l’objet d’étude expérimentale fine,particulièrement dans le cas de liquides à haut nombre de Prandtl, deux bancs d’essai...
Published in Journal of magnetic resonance (San Diego, Calif. : 1997)
3D printing has evolved into an invaluable tool for rapid and cost-effective production of intricate parts. In this paper we describe 3D printing and other rapid prototyping methods to fabricate 3.2 mm stators and drive caps for use in magic angle spinning (MAS) NMR experiments. These components can be fabricated with the assistance of computer-aid...
This paper proposes a new magnetic model self-identification technique for synchronous machines to build the flux-map look-up tables (LUTs). Provided the shaft is free to turn, an alternating self-acceleration and deceleration sequence is envisaged for identification without a dedicated experimental rig or additional hardware. Respect to previous w...
