A Novel Double Stator Consequent-Pole Transverse-Flux Motor With Trapezoidal Teeth and Permanent Magnets

As a low-speed, high-torque motor, the transverse flux motor (TFM) holds significant potential for direct drive applications. Firstly, this paper proposes a novel double stator consequent-pole transverse flux motor (DSCP-TFM) to enhance torque density and motor space utilization. The DSCP-TFM features the tooth and permanent magnets (PMs) distributed on both stators and the rotor. Secondly, the magnetic saturation phenomenon at the tooth tips is explained using the saturation leakage-flux equivalent magnetic-circuit model (SLF-EMCM). It provides a different perspective for analysis. Thirdly, a new structure of the trapezoidal PMs and tooth is proposed. It can reduce magnetic saturation at the tooth tips, further reduce cogging torque, and flux linkage harmonics. Additionally, a 3D finite element analysis (3D-FEA) is conducted to verify the theoretical analysis and to assess the impact of different tooth and PM shapes on motor performance. The effects of trapezoidal tooth angle and air-gap length are also evaluated. Finally, a prototype is manufactured, and experiments are conducted. The experimental results demonstrate that the DSCP-TFM exhibits higher torque output and lower harmonics in the coil flux linkage than existing TFMs, thereby validating the design and analysis.