The paper analyses the brush wear in two small rating universal motors, with the same constructive quantities, except the number of turns of the two coil sections per layer-slot; in the former motor, the number of turns is the same, in the latter different, maintaining nevertheless the same sum. Using a particular equivalent circuit to study the commutation, the significant quantities influencing the brush wear are found, explaining the reasons of the different wear in the two cases. Then, a quantitative evaluation of the brush wear is carried out.
Model to Evaluate the Influence of the Winding Data on the Brush Wear in Universal Motors
DI GERLANDO, ANTONINO;PERINI, ROBERTO
2006-01-01
Abstract
The paper analyses the brush wear in two small rating universal motors, with the same constructive quantities, except the number of turns of the two coil sections per layer-slot; in the former motor, the number of turns is the same, in the latter different, maintaining nevertheless the same sum. Using a particular equivalent circuit to study the commutation, the significant quantities influencing the brush wear are found, explaining the reasons of the different wear in the two cases. Then, a quantitative evaluation of the brush wear is carried out.File in questo prodotto:
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