成果報告書詳細
管理番号20100000002437
タイトル*平成21年度中間年報 次世代自動車用高性能蓄電システム技術開発/要素技術開発/等価狭ギャップ構造による脱レアアース高性能リラクタンストルク応用モータの研究開発
公開日2011/1/25
報告書年度2009 - 2009
委託先名ダイキン工業株式会社
プロジェクト番号P07001
部署名燃料電池・水素技術開発部
和文要約和文要約等以下本編抜粋:1.研究開発の内容及び成果等
1.1 研究開発の目的
本研究開発の目的は、レアアース永久磁石の使用料がゼロで従来技術と同等の総合効率及びしゅつりょく密度となる、脱レアアース高性能リラクタンストルク応用モータを開発することである。具体的には、フェライト磁石を補助的に用いる動機リラクタンスモータ(フェライト磁石補助型同期リラクタンスモータ)において、高トルク化、および、実ギャップ長を短縮することなく狭ギャップモータと同等の性能となる等価狭ギャップ構造を組み合わせる設計技術と生産技術を開発することを目的とする。
英文要約Title: Development of High-performance Battery System for Next-generation Vehicles / Elemental Technology Development / Research and Development of Rare-earth-less High-performance Reluctance Motor with Equivalent Narrow Gap Structure (FY2008-FY2011) FY2009 Annual Report
The objective of this project is the development of a rare-earth-less high-performance reluctance motor that has the same efficiency and power density as an IPMSM that uses rare-earth permanent magnets. A permanent magnet assisted synchronous reluctance motor (PMASynRM) that uses the ferrite magnet in the auxiliary was studied. The design method and production technology for a motor with an equivalent narrow air gap that enables to have the same performance as a motor with a narrow air gap were developed. A test system was developed to drive a motor by non-PWM voltage wave form by using a motor test bench developed in the previous year, and multifunctional AC power supplies newly introduced. The system enables to evaluate motor losses of a PMASynRM, which has a rated power of 2.5kW, without carrier frequency losses caused by a PWM inverter. For a rare-earth-less high-performance reluctance motor, a six pole PMASynRM was studied. The stator of the motor was divided into three cores, and the winding method was developed to employ the distributed windings for the divided stator cores. As a result, it was confirmed that the motor structure has high torque characteristics. A PMASynRM having an equivalent narrow air gap with two step structure was investigated. The motor was designed and built to evaluate the performance. Also, a PMASynRM with a normal air gap was prototyped to compare with a PMASynRM with an equivalent narrow air gap. The fundamental characteristics of the six pole PMASynRM with a normal air gap were evaluated by using the motor test bench system. The motor achieved the maximum torque of 20Nm at 2400min-1, and the maximum power of 5kW, though the speed was up to 6000min-1 because of safety concerns of the rotor strength. The maximum efficiency was 92.2%. It will be improved by modifying the shape of end windings of the prototype because the coil resistance was large due to the large end windings. The motor vibrations were measured at a rated torque, and it was confirmed that significantly large vibration components were not generated.
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