Research Project for Practical Use of Six-Phase Pole Change Induction Motor for Electric Vehicle

为了改善电动汽车(EV)驱动电机的运行特性，课题组和课题组提出了一种六相变极感应电机(六相PCIM)，并阐明了其工作原理、稳态特性等。提出了六相PCIM的分析理论，并通过实验验证了其稳态特性和暂态特性均可精确计算。结果表明，六相PCIM具有在不增加电机电流和体积的情况下扩大恒功率运行范围，以及无机械接触器的六相PCIM系统小型化等优良特性。并通过实验验证了该分析理论可以连续分析变极前后的特性。然而，如果考虑到六相脉动注射在电动汽车中的应用，那么POL…在抑制较大暂态波动的情况下，需要更多的变化条件。本项目的目的是为实用的六相PCIM设计奠定基础，包括弄清暂态特性等。为了实现这一目的，本课题进行了以下工作：1.制作了六相逆变器样机。2.建立了暂态特性测量系统。3.利用六相逆变器对实验结果和仿真结果进行了比较。4.提出了一种变极条件的评估方法。5.对变极条件进行了详细的研究。结果表明，研究人员能够提出一种抑制暂态现象的变极条件，并从理论上对两者进行了改进。实验证明，可以实现平稳的变极操作。此外，还获得了六相PCIM在电动汽车上实际应用所需的基础数据，从而达到了本项目的目的。较少

The head investigator and the investigator have proposed a six-phase pole change induction motor (a six-phase PCIM) to improve the operation characteristic of a motor for driving the electric vehicle (EV), and have clarified the operational principle, the steady state characteristic and so on. Also, the analysis theory for six-phase PCIM has been proposed and is experimentally clarified that the steady state and the transient characteristics can be to calculated finely. As the result, the six-phase PCIM has excellent characteristics, such as, the expansion of constant power operation range without increase of the current and the volume of the motor, and the miniaturization of the six-phase PCIM system without mechanical contactors. Furthermore, it have been experimentally verified that the characteristics at the pole change former and later can be continuously analyzed using the proposed analysis theory. However, if the application of the six-phase PCIM in EVs is considered, then a pol … More e change condition as suppressed the large transient variation becomes necessary.The purpose of this project was to build a basis for a practical six-phase PCIM design, which includes clarifying the transient characteristics, so on. In order to realize this purpose, this project was conducted as follows;1.A prototype six-phase inverter (INV) was made.2.A system for measuring the transient characteristic was established.3.Using the six-phase INV, the experimental result were compared with simulated results.4.An evaluation method for the pole change conditions was proposed.5.The pole change condition was examined in detail.As a result, the investigators were able to propose a pole change condition that suppresses the transient phenomena and also crarified both theoretically. and experimentally that a smooth pole change operation can be pbtained. In addition, the basic data required for practical application of the six-phase PCIM in EVs was also obtained and, therefore, the purpose of this project was achieved. Less