Dynamic brush placement of large DC machines in mining industry &amp;#x2014; A feasibility study

Boulter, M. C.; Alahakoon, Sanath

doi:10.1109/aupec.2014.6966508

Cited by 1 publication

(2 citation statements)

References 6 publications

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“…Indeed, experimentation shows a deviation of approximately À30% on torque compared to simulation. There may be many reasons for these differences (as switching quality which can be improved 22 as well as brush placement 23 ).…”

Section: Proof Of Conceptmentioning

confidence: 99%

“…Indeed, experimentation shows a deviation of approximately −30% on torque compared to simulation. There may be many reasons for these differences (as switching quality which can be improved 22 as well as brush placement 23 ). Nevertheless, some clues show that the global behavior of the machine can be improved by including dynamic simulations straight in optimization process.…”

Section: Claw Pole Machinementioning

confidence: 99%

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Level‐set‐based method for designing novel brushed synchronous machines

Ristagno

Devornique

Giraud

et al. 2023

Int J Numerical Modelling

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Nowadays, research on electromagnetic devices increasingly focuses on multiphysics three‐dimensional complex systems. However, this kind of simulations require huge computational resources and consequently very high CPU time. Ristagno et al. proposed a level‐set based method allowing meshing step savings in any iterative processes (as movement modeling or optimization processes). The level‐set method lies in implicit description of moving fronts as described in the study by Osher et al. (1988). Inspired by Räisänen et al., all physical parameters (material properties, supply or armature movement) are implemented by projection of mathematical functions. In this paper, the authors proposes to study and design a new kind of mechanical commutator for DC machines thanks to this coupled method. Indeed, there is a renewed interest in DC machines because they can be suitable for small mobilities. To be noted, small mobility concerns all kind of vehicles (2 wheels–4 wheels–autonomous vehicles such as drones) that have speeds below 50 km/h. However, specifications for traction applications are difficult to achieve for such a rustic machine and requires some modifications. That is why, inspired by usual synchronous machine, the commutator has been redesigned to obtain expected theoretically signal waveform. Furthermore, numerical coupled simulations have been used to design both machine and supply simultaneously. This work has led to the manufacture of a proof of concept and preliminary results are very promising.

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Section: Proof Of Conceptmentioning

confidence: 99%

Section: Claw Pole Machinementioning

confidence: 99%