Design Optimization of Interior Permanent Magnet Synchronous Motor for Electric Compressors of Air-Conditioning Systems Mounted on EVs and HEVs

• Published in: IEEE transactions on magnetics Vol. 54; no. 11; pp. 1 - 5
• Main Authors: Cho, Seong-Kook, Jung, Kyung-Hun, Choi, Jang-Young
• Format: Journal Article
• Language: English
• Published: New York IEEE 01.11.2018; The Institute of Electrical and Electronics Engineers, Inc. (IEEE)
• Subjects: Air conditioners; Air conditioning; Automobiles; Cogging; Cogging torque; Compressors; Design engineering; Design optimization; electric vehicle/hybrid electric vehicle (EV/HEV); Electric vehicles; Finite element method; finite-element method (FEM); Forging; Hybrid vehicles; interior permanent magnet synchronous motor (IPMSM); Magnetism; Optimization; Permanent magnet motors; Permanent magnets; Product design; Prototypes; Reluctance motors; response surface method (RSM); Response surface methodology; Synchronous motors; Taguchi method; Taguchi methods; Torque
• ISSN: 0018-9464; 1941-0069
• DOI: 10.1109/TMAG.2018.2849078

This paper deals with the optimization design process of an interior-type permanent magnet synchronous motor (IPMSM) for electric compressors of air conditioners applied to electric cars and hybrid vehicles. Based on a prototype IPMSM, we identified the current level for efficiency and cogging torque using finite-element analysis (FEA). The IPMSM's main design variables are optimized to primarily satisfy the target of efficiency and cogging torque. A second optimization design is carried out using the response surface method (RSM) for the main design variables obtained from the Taguchi method analysis. As a result, the optimization design is carried out through a two-step optimization design process using the Taguchi method and RSM. The IPMSMs are analyzed using FEA, and their validity is confirmed by comparing the test results against each step-by-step model. We validate an effective optimization design process using a two-stage design process. We conclude that the proposed approach provides an effective design method for engineers.