Design and analysis of high speed outer rotor permanent magnet claw pole machine

Because of high frequency and rotation speed, the analysis and design methods of high speed machine are different from conventional ones, such as rotor stress calculation, rotor dynamics analysis and electromagnetic design. In view of an outer rotor permanent magnet claw pole machine proposed, the claw pole and wingding were designed and analyzed by equivalent magnetic circuit and finite element method (FEM); the rotor stress distribution were calculated to check its strength; and the rotor bending mode and critical speed were simulated to analyze dynamics properties. Finally, a prototype of 1.5kW was developed, then the test research of prototype was carried out, the feasibility and accuracy of theoretical analysis have been verified by experimentation.