Optimization Design of Electromagnetic Drive Structure for Shaftless Rim Thruster
The shaftless rim thruster has an important role underwater construction in China,and its electromagnetic drive part uses a large diameter inner rotor permanent magnet brushless DC motor structure.The permanent magnet brushless DC motor structure of the electromagnetic drive part of the shaftless rim thruster was designed and the motor performance optimization analysis was carried out based on Maxwell to improve its performance.Four parameters such as efficiency and starting current were selected as the optimization objectives,and six parameters related to the slot type were selected as the optimization variables.The back propagation(BP)neural network was used to establish the relationship between the optimization variables and the optimization target.The linear weighting method was used to determine the fitness function to perform a multi-objective optimization analysis of the motor to improve its performance.Finally,the optimal solution was substituted back to the Maxwell model to verify the validity of the solution results.The results show that the performance of the motor is improved after optimization,and the optimization results are fine and achieve the expected results.
万方数据
维普
