Mathematical Modeling and Optimal Design for HRE-Free Permanent-Magnet-Assisted Synchronous Reluctance Machine Considering Electro-Mechanical Characteristics
Year: 2025
Type: article
Abstract: This paper presents the design of a permanent-magnet-assisted synchronous reluctance motor (PMa-SynRM) for compressor applications using Sm-series injection-molded magnets that eliminate heavy rare-earth elements. The high shape flexibility of the injection-molded magnets enables the formation of a curved multi-layer flux-barrier rotor geometry based on the Joukowski airfoil potential, optimizing magnetic flux flow under typical compressor operating conditions. Furthermore, electromagnetic performance, irreversible demagnetization behavior, and rotor stress sensitivity were analyzed with respect to key design variables to derive a model that satisfies the target performance requirements. The validity of the proposed design was confirmed through finite element method (FEM) comparisons with a conventional IPMSM using sintered NdFeB magnets, demonstrating the feasibility of HRE-free PMa-SynRM for high-performance compressor drives.
Source: Mathematics
DOI: 10.3390/math13172858
Authors: Yeon-Tae Choi, Su-Min Kim, Soo-Jin Lee, Jun-Ho Jang, Seong-Won Kim, Jun-Beom Park, Yeon-Su Kim, Dae-Hyun Lee, Jang-Young Choi, Kyung-Hun Shin
Institutions: Chungnam National University, Changwon National University
Language: English
Subfield: Electrical and Electronic Engineering
Field: Engineering
Domain: Physical Sciences
Open Access status: gold
Estimated APC paid: $3,137
Awards: G2340588483, G4173778885
OpenAlex ID: W4414004948