CAJ | 학술논문

随着科技的发展，船舶用永磁同步电机的功率密度与日俱增。为研究其温度分布规律及电机内部件机构及材料对温升的影响，该文以一台50 kW表贴式永磁同步电机为例，基于计算流体力学(computational fluid dynamics，CFD)以及传热传质学基本理论，根据共轭传热原理，建立了二维全域温度物理模型。应用有限体积元法，对变频供电情况下的表贴式永磁同步驱动电机内各部件起动温度及稳态温度进行了数值求解，通过与实验数据的对比分析，验证其计算结果的准确性以及求解方法的合理性。在此基础上，对散热翅高度、机壳材料及外风机风量对全域温升的影响进行分析。
수착과기적발전，선박용영자동보전궤적공솔밀도여일구증。위연구기온도분포규률급전궤내부건궤구급재료대온승적영향，해문이일태50 kW표첩식영자동보전궤위례，기우계산류체역학(computational fluid dynamics，CFD)이급전열전질학기본이론，근거공액전열원리，건립료이유전역온도물리모형。응용유한체적원법，대변빈공전정황하적표첩식영자동보구동전궤내각부건기동온도급은태온도진행료수치구해，통과여실험수거적대비분석，험증기계산결과적준학성이급구해방법적합이성。재차기출상，대산열시고도、궤각재료급외풍궤풍량대전역온승적영향진행분석。
With the development of electronic technology, the power density of permanent magnet synchronous motors (PMSM), which are used in the ships, is increasingly significant.In order to investigate the characteristics of thermal distribution and the temperature variations caused by the structure and materials of main components, a 50 kW surface PMSM, used in warships, was researched. Based on the computational fluid dynamics (CFD) and the numerical heat transfer theory, a 2D physical model was establishedaccording to the conjugate heat transfer theory. Therefore, the start-up and steady-state temperature rises of PMSM, operating under frequency conversion control, were simulated numerically using the finite volume method. The correctness of calculated results and the accuracy of the solution method were verified by experimental data. What's more, the changes of factors, such as the height of cooling fins,the materials of motor casing, and the air flow rate, which may influence global temperature, were studied. Some useful conclusions are obtained, which has practical engineering value and reference value to the design of PMSM.