CẢI THIỆN MÔ MEN ĐỘNG CƠ NAM CHÂM VĨNH CỬU TỪ THÔNG DỌC TRỤC CHO XE ĐIỆN GẮN BÁNH TRỰC TIẾP

Abstract

Axial flux permanent magnet motor has been applied for many electric vehicles due to the high
torque density and compact sizes and multipolar disc-type structure. In this paper, the axial flux
permanent magnet motor with concentrated winding, axial flux, segmental rotor is proposed to
compare with the conventional BLDC motor. The proposed topology has permanent magnet segments
and slotted stator. In order to compare with the existing BLDC motors, an amount of permanent
magnets is considered to scale up power and torque. This approach makes the assembly easier and
reduce the cost compared to the conventional axial flux permanent magnet motor. Moreover, the multi
sector-proposed topologies have usually a higher torque density and torque-to-weight ratio compared
to reported axial flux switch reluctance motors. The detailed design and operation of the proposed
machine are then presented, and the performance of the machine is evaluated for an in-wheel traction
application. Especially, for a multipolar disc-type structure, the axial flux permanent magnet motor is
easy to scale up power for the next models. The proposed model will be surveyed with the different
stator topologies of the axial flux permanent magnet motor such as sector or I-core or core less motor.