成果報告書詳細
管理番号20110000000858
タイトル*平成22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 次世代自動車用高性能モータ蓄電パワエレシステムの研究開発
公開日2012/6/27
報告書年度2010 - 2010
委託先名三菱電機株式会社
プロジェクト番号P07001
部署名スマートコミュニティ部
和文要約1.研究開発の内容及び成果等
レアアースを用いずにPMモータ並みの性能が得られるハイブリッド自動車、プラグインハイブリッド自動車や電気自動車等に使用するコイル界磁式同期モータを実現することを目指した研究開発を実施する(図1参照)。このため、以下の6つの項目の要素技術の研究開発を進め、最終目標を平成23年度に設定して20kW級コイル界磁型同期モータ要素試験機の研究開発とモータトータルシステムの研究開発を行う。
1)軽量コンパクトな高出力ランデル型基本構造、2)3次元鉄損現象の解明と対策および磁気/電気装荷配分、3)ブラシレス・スリップリングレス給電構造、4)車載用瞬発キャパシタ、5)瞬発キャパシタを用いて回生し界磁電流として用いるシステム、の研究開発および 6)モータの性能(総合効率、出力密度)の確認。
英文要約Development of high-performance battery systems for next-generation vehicles.
Elemental technology development.
Development of a high-performance motor system for next-generation vehicles equipped with a power-electronic interface for an energy storage.
(FY2008-2011) FY2010 Annual Report.

(1)Development of a synchronous motor with field coil excitation.
(1-1) Basic structures of a high-power light-weight Lundell type motor.
Specifications of 260mm outer diameter, 32-pole and brushless field excitation were selected for a third proto motor after design parameter study. The proto motor has ferrite magnets in the rotor in order to reduce magnetic saturation of the rotor core. The measured maximum torque density has achieved the final target of 5 Nm/kg.
(1-2) Clarification and countermeasures of three-dimension iron loss phenomenon, and design of magnetic and electric loadings
The core processing damage is a big factor which increases the motor loss. An analytical design technique of the motor performance was developed. The core processing damage was evaluated using a coordinated analysis technology of structure and the magnetic field of a core.
This fiscal year, the verification examination was done for the accuracy improvement of analysis techniques. Magnetic test pieces near the motor core processing condition were produced, and the problem was dug up by the comparison with the analytical result.
Moreover, the relation between the clearance of the stamp and the magnetic property was investigated. As a result, a new knowledge was obtained.

(2)Elemental technology development of power electronics for energy storage systems.
(2-1)Development of electric double layer capacitor cells for next-generation vehicles.
A novel 1kF class cell of an elliptical spiral-type capacitor (ca. 100 cm2 class) was developed for modules (10 cells) and for elementary tests. The cell was operated at 105?C under constant voltage of 1.8V, and the life of more than 3000 hours was assumed.
(2-2)Power electronics for energy storage devices
A novel DC-DC converter was constructed with two different types of converters having different electric power capacity. As a result, 90% and more of the high efficiency was attained over the wide range of output.

(3)R&D of the total systems.
The JC08 running mode with and without EDLC was simulated using a developed program, and efficiency in consideration of the brake generation of electricity was calculated.
Preparation of the total system hardware to enforce in the final year was completed.




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