Abstract
An approach for performance prediction of saturated brushed permanent magnet direct current (DC) motor from physical dimensions
Highlights
Despite the great competition from other types of motors such as switched reluctance and brushless permanent magnet motors, brushed permanent magnet direct current (DC) motors are still dominant in low power and cost-sensitive applications
Cheaper production cost and lower fabrication time are some of the advantages offered by permanent magnet direct current (PMDC) motors with brushes
The difference in magnet, stator, and rotor lengths in PM brushed DC motors increases the complexity of analytical modeling and calculations of the machine, because, in the determination of the magnet operating point, effective magnet length has to be taken into account. [29] investigates the effects of magnet length in AC machines
Summary
Despite the great competition from other types of motors such as switched reluctance and brushless permanent magnet motors, brushed permanent magnet direct current (DC) motors are still dominant in low power and cost-sensitive applications. The difference in magnet, stator, and rotor lengths in PM brushed DC motors increases the complexity of analytical modeling and calculations of the machine, because, in the determination of the magnet operating point, effective magnet length has to be taken into account. The main contributions of this paper are summarized as follows; first, an analytical approach is proposed to consider the effect of the flux completing its path through the surrounding air in magnet operating point determination and performance prediction of saturated brushed PMDC motors. This approach can be further generalized to be used for any saturated electric machine.
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