Abstract: Due to the uncontrollable permanent magnet flux and the inherent defects of the permanent magnet, the traditional PMBLDCM suffers the limitation of its application in many high-tech fields. This paper proposed a novel doubly salient brushless DC motor without permanent magnet. To improve the traditional structural principle, assisting radial stator excitation would be done by axial assisted coil field, and the constraints of the permanent magnet material properties was canceled. Higher output torque characteristic of the new motor could be achieved by improving the air-gap flux and the armature winding current. The motor was numerically computed by 3-D FEM, the accuracy and effectiveness was verified; A combined simulation model was built based on the special structure and inductance model of the motor, and this paper adopted a three phase six-state angle conduction mode which could increase the output torque and reduce the torque ripple; Composite excitation current-torque control was proposed based on the adjustable flux characteristic of central assisted excitation coil. The experiments results show that the feasibility and effectiveness of the prototype with a new structure and control method.