Hybrid Claw Pole Machine with Consequent Permanent Magnet Rotor

In this paper, a hybrid excited claw pole rotor is presented, where the excitation of the rotor is performed by a field winding and additionally by permanent magnets installed on the slots of the claw pole rotor. The validation of this rotor concept has been performed with 3D finite elements. Several simulations are made in order to estimate the boosting effect at different load conditions. The obtained results show that, with the proposed hybrid excited rotor there is a considerable improvement on the claw-pole machine characteristics. Compared to a conventional design, the hybrid rotor delivers 26% more torque and power, up to 8% better efficiency and up to 17% better power factor.