A Novel Intersect Consequent Pole IPMSM Incorporating Rotor Gap and 3-D MEC for Magnet Reduction and Performance Improvement
磁石削減と性能向上のためのロータギャップと3次元磁気等価回路を組み込んだ新規交差型コーンセクエントポールIPMSM (AI 翻訳)
Siyu Song, Won-Ho Kim
🤖 gxceed AI 要約
日本語
本論文は、希土類磁石の使用量を削減しつつ、モータの性能を向上させる新しい交差型コーンセクエントポールIPMSMを提案する。提案構造は、磁石材料を31.8%削減しながら、コギングトルクを51.3%、トルクリップルを3.41%p低減し、従来設計と同等の出力特性を達成した。3次元磁気等価回路モデルにより、軸方向漏れ磁束を精度よく解析し、設計最適化と試作検証を行った。
English
This paper proposes a novel intersect consequent pole IPMSM that reduces rare-earth magnet usage by 31.8% while improving performance: cogging torque decreased by 51.3% and torque ripple by 3.41%p, maintaining output characteristics. A 3-D magnetic equivalent circuit model accurately captures axial flux leakage, enabling efficient optimization. Prototype testing validates the design, offering a cost-effective, high-efficiency alternative for electric machines.
Unofficial AI-generated summary based on the public title and abstract. Not an official translation.
📝 gxceed 編集解説 — Why this matters
日本のGX文脈において
日本はモータ製造と希土類磁石の主要国であり、供給リスク低減とエネルギー効率向上はGXの重要課題。本技術は、自動車や産業用モータの電動化を支える基盤として、日本の製造業の競争力強化に寄与する可能性がある。
In the global GX context
Globally, electric machines consume 35-40% of electricity, so efficiency gains are critical for decarbonization. This magnet-saving motor design addresses both energy efficiency and supply-chain vulnerabilities for rare-earth materials, relevant to global efforts in sustainable manufacturing and electrification.
👥 読者別の含意
🔬研究者:This paper presents a novel motor topology with validated performance, useful for researchers in electric machine design and optimization.
🏢実務担当者:Motor manufacturers can adopt this design to reduce rare-earth magnet costs and improve efficiency in applications like EVs and industrial drives.
🏛政策担当者:Policymakers focused on energy efficiency standards and critical material supply chains should note this technology as a pathway to reduce dependence on rare-earth magnets.
📄 Abstract（原文）
Electric machines account for roughly 35–40% of global electricity use, making efficiency improvements essential for reducing energy consumption and CO2 emissions. Rare-earth permanent magnets enable compact and high-performance designs but face issues of high cost and supply-chain vulnerability, motivating research on magnet-saving structures. One candidate is the consequent-pole topology, which significantly lowers magnet usage but inherently suffers from asymmetric magnetic fields that cause back-EMF distortion, torque pulsation, and demagnetization concerns. To address these drawbacks, this study introduces an intersect-type rotor configuration in which N and S poles are arranged symmetrically along the axial direction. While this configuration improves magnetic balance and suppresses torque ripple and cogging, it introduces axial leakage that reduces average torque and increases eddy-current losses. A dedicated rotor-gap design and a three-dimensional magnetic equivalent-circuit model are therefore developed to accurately capture axial flux paths with drastically lower computational burden compared to full 3-D finite-element analysis. Optimization of magnet geometry, demagnetization assessment, and loss evaluation are performed, followed by fabrication and testing of a V-shaped prototype. The proposed configuration achieves a 31.8% reduction in magnet material, a 51.3% decrease in cogging torque, and a 3.41%p reduction in torque ripple while maintaining the same output characteristics as a conventional design, demonstrating its potential as a high-efficiency and cost-effective alternative. At this time, the Ensys electromagnetic analysis program was used.
🔗 Provenance — このレコードを発見したソース
- semanticscholar https://doi.org/10.1109/access.2025.3645261first seen 2026-05-05 22:18:38
gxceed は公開メタデータに基づく研究支援データセットです。要約・翻訳・解説は AI 支援で生成されています。 最終的な解釈・検証は利用者が原典資料に基づいて行うことを前提とします。