2022 Fiscal Year Final Research Report
Enhancement of Parallel-in-space-time Electromagnetic Field Analysis for Practical Electric Machine Design
| Project/Area Number |
20K04429
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Multi-year Fund |
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| Section | 一般 |
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| Review Section |
Basic Section 21010:Power engineering-related
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| Research Institution | Doshisha University |
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Principal Investigator |
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| Project Period (FY) |
2020-04-01 – 2023-03-31
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| Keywords | 電気機器 / 並列計算 / 有限要素法 / ヒステリシス / 高効率 / 鉄損 |
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| Outline of Final Research Achievements |
This research aims to the enhancement of a parallel-in-space-and-time finite-element method (PinSTFEM). The main themes include developing a new parallel-in-time method with better parallel performance, an accurate iron loss evaluation by introducing a hysteresis modeling method into the PinSTFEM, and improving parallel performance of the preconditioning in the context of a parallel-in-space method. First, we proposed the novel PinSTFEM by overlapping time interval in a parallel time-periodic explicit-error-correction (TP-EEC) method for steady-state analyses of electric machines. Then, we developed a new PinSTFEM combined with the hysteresis modeling method in which the magnetization histories are updated appropriately. Finally, we clarified the features of two parallel preconditioning methods in the analysis of a practical rotating machine. As a result, synthesizing achievements of this research finally leads to the further high-efficiency of electric machines.
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| Free Research Field |
パワーマグネティクス
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| Academic Significance and Societal Importance of the Research Achievements |
空間分割型並列計算法，時間分割型並列計算法およびヒステリシスモデル化法を用いた鉄損算定に関連した個々の技術を高度化した上でPinSTFEMとして統合し，実規模電気機器の損失評価への使用に耐え得る高速化と高精度化を両立した新規解析技術の開発を達成しており，電気機器工学，パワーマグネティクスおよび計算科学的な観点から有意義な知見が得られている．複数の研究分野にまたがる独創性の高い本研究課題の成果の統合により，PinSTFEMに基づく高速・高精度な損失評価技術の実用性が前進し，高効率電気機器設計・開発のさらなる高度化が期待される．
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