Analysis and Optimization of the Electromagnetic Performance of a Novel Stator Modular Ring Drive Thruster Motor

Yukai Li, Baowei Song, Zhaoyong Mao and Wenlong Tian
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Yukai Li: School of Marine Science and Technology, Northwestern Polytechnical University, Xi’an 710072, China
Baowei Song: School of Marine Science and Technology, Northwestern Polytechnical University, Xi’an 710072, China
Zhaoyong Mao: School of Marine Science and Technology, Northwestern Polytechnical University, Xi’an 710072, China
Wenlong Tian: School of Marine Science and Technology, Northwestern Polytechnical University, Xi’an 710072, China

Energies, 2018, vol. 11, issue 6, 1-23

Abstract: A rim driven thruster (RDT) is an integrated deep-sea motor thruster that has been widely studied. In order to improve the performance of RDT, a novel RDT motor with a modular stator is proposed in this paper. The electromagnetic performance of the new RDT motor is analyzed by the finite element method (FEM). The influence of structure parameters on the electromagnetic performance of the new RDT motor are analyzed in detail. It is shown that the effect of additional tooth width and pole arc coefficient on the electromagnetic performance of the stator modular RDT motor is significant. To obtain the optimal design with a maximum average electromagnetic torque and minimum torque fluctuation ratio, a multi-objective optimization design method combining the non-dominated sorting genetic algorithm II (NSGA-II), Kriging method and FEM is presented in this paper. A set of Pareto optimal solutions is obtained, and the optimal design point is selected from the Pareto fronts. Compared with the initial design, the average electromagnetic torque of the optimized model is improved by 16.591% and the fluctuation ratio is reduced to 3.18%.

Keywords: stator modular rim driven thruster (RDT) motor; electromagnetic performance; finite element method (FEM); multi-objective optimization design; Kriging method; NSGA-II algorithm (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2018
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (2)

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