Modeling, optimization and realization of brushed DC motors with PCB-technology

Details

Supervisors

Dehez, Bruno

Faculty

Ecole polytechnique de Louvain

Degree label

Master [120] : ingénieur civil électromécanicien, à finalité spécialisée: énergie

Abstract

Brushed DC motors are used for their simplicity of control, their resistance to rough environments and their attractive price. It is therefore interesting to try to improve their performance with PCB-winding technology, a technology that has already proven its potential in BLDC motors. The first objective of this master's thesis is to compare the performance of brushed DC motors with brushless DC motors equipped with the PCB-technology. It appears that the performance of the BLDC motor is superior in terms of motor constant, time constant and efficiency for high torque applications. This explains the proliferation of BLDC motors in high efficiency applications. The second objective is to realize a first prototype of winding for brushed DC motor. This winding was placed in an existing motor, allowing to prove experimentally the feasibility of this type of winding and to validate the analytical models used for its design. Moreover, its performances were compared to the original motor. It appears that the prototype has a lower efficiency but that a modification of the internal topology of the motor would allow to improve it and to outperform the original motor.