Current harmonics of a current superimposition variable flux reluctance motor

Traction motors for electric vehicles and hybrid electric vehicles require wide power band characteristics. In order to increase the power band, field weakening control is widely used in interior permanent magnet motors. However, the effectiveness of the field weakening control is not sufficient for use in traction motors for vehicles. In addition, the motor efficiency is decreased due to the d-axis current. In order to solve the problem, we have developed a current superimposition variable flux reluctance motor (CSVFRM) in this paper.