A Novel Claw Pole Motor With Soft Magnetic Composites

The integrated starter generator used in micro hybrid electric vehicle is usually claw pole motor. The claw pole core in the motor is forged by low carbon steel, which is of complex technology and the eddy current loss of the whole conductor in the magnetic field is large. To solve these problems, a novel claw pole motor is proposed in this article, which uses iron-based soft magnetic composites to prepare claw pole core and to insert permanent magnet between claw poles. By studying the preparation process parameters of iron-based soft magnetic composites, it is found that the mechanical properties and magnetic properties of the soft magnetic composites are the best under 700 MPa pressing pressure and 500 °C annealing temperature. A prototype is designed and manufactured, and its power generation and starting performance are tested, which can meet the performance requirements of 48 V micro hybrid system.