关键词: 轴向磁通开关磁阻电机, 动态导通角, 直接瞬时转矩控制, 中央绕组

Abstract: A new type of axial flux switched reluctance motor with central winding auxiliary excitation was designed to solve the inherent defects of traditional permanent magnet motor, such as irreversible demagnetization and unadjustable magnetic flux at high temperature. Based on the motor inductance and torque characteristic curve, a simple conduction angle control algorithm was introduced, and combined with the unique central winding structure of the motor itself, a control strategy of dynamic conduction angle combined with the central winding was proposed.When the run motor at low speed, the armature current could accurately track the expected torque and avoid excessive peak value.When the motor run at high speed, the armature current could be demagnetized quickly to prevent the large armature current from entering the negative torque region. The motor torque output characteristics were more stable. The simulation and experimental results show that the proposed control strategy can effectively suppress the torque ripple of the motor in a wide speed range.

Key words: axial flux switched reluctance motor(AFSRM), dynamic conduction angle, direct instantaneous torque control(DITC), central winding