Research Project for Characteristic Evaluation of Induction Motor under Various Power Source Environments

在国际电气会议上发表研究成果3篇，在日本电气工程师学会会刊发表研究成果1篇，在日本电气工程师学会旋转机械技术会议等会议上发表口头报告33篇，发表论文4篇。此外，目前正在为日本电气工程师学会会刊和日本电气安装工程师学会会刊撰写研究成果。研究结果总结如下：【〇！1】电源波形对感应电动机特性和损耗的影响：详细评估了小型感应电动机的损耗，以及设计尺寸与损耗之间的关系。此外，采用四种方法估计了杂散负载损耗，并分析了杂散负载损耗等不同估计方法的特点。此外，根据杂散负载损耗的实际测量值，我们提出了一种计算方法，可以更准确、方便地计算出三相IM的特性。2】不平衡电压下IM特性的测试：提出了一种模拟不平衡电压下IM稳态特性的方法，并利用试验机进行了测试。所提出的技术被证明是非常有用的。此外，还详细研究了不平衡电压下IM电流中的电流增大现象。3】畸变电源波中高次谐波电压对负载条件下IM电磁振动的影响：详细研究了电容感应电动机时谐波电压引起的电磁振动。结果揭示了斜槽等对振动的特性和减振效果。详细研究了畸变电压驱动下电磁振动产生的控制条件，以及时谐波电压引起的电磁振动与负载条件的关系。少

We were able to announce research results in 3 papers to international electrical conference, 1 paper to the Transaction of the Institute of Electrical Engineers of Japan, 33 oral reports to conferences such as the Rotating machine Technical Meeting of the Institute of Electrical Engineers of Japan, and 4 publications. In addition, at present, research results are being prepared for contribution to the Transactions of the Institute of Electrical Engineers of Japan and the Journal of the Institute of Electrical Installation Engineers of Japan. A summary of the research results follows :【○!1】 Influence of power supply waveform on the characteristics and loss of induction motors (IM) :Losses in small IM were evaluated in detail, with the relationship between design dimensions and loss. Moreover, stray load losses were estimated by four methods, and characteristics of the different estimations of stray load loss and so on were examined. Furthermore, the characteristics of three-phase IM ca … More n now be accurately and easily calculated based on a calculation method proposed by us from the actual measured value of stray load loss.【○!2】 Examination of the characteristics of IM under unbalanced voltage :A method for simulating the steady state characteristics of IM under unbalanced voltage was proposed and inspected using a test machine. The proposed technique was shown to be very useful. In addition, the current increasing phenomena in the current of IM under unbalanced voltage was examined in detail.【○!3】 Influence of higher harmonic voltage included in distorted power supply waves on the electromagnet vibration of IM under load conditions :Electromagnetic vibration caused by time-harmonic voltage of the capacitor induction motor was examined in detail. As a result, characteristics and reduction effects of skewed slots, etc. of the vibration were revealed. Conditions governing the occurrence of electromagnetic vibration in IM driven by distorted voltages were examined in detail with the relationship between electromagnetic vibration caused by time-harmonic voltage and load conditions. Less