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Study on Control System of Inverter-Fed Linear Motor for Urban Transit

城市交通变频直线电机控制系统研究

基本信息

批准号：
62420030
负责人：
NONAKA Sakutaro
金额：
$ 24.19万
依托单位：
Kyushu University
依托单位国家：
日本
项目类别：
Grant-in-Aid for General Scientific Research (A)
财政年份：
1987
资助国家：
日本
起止时间：
1987 至 1989
项目状态：
已结题

来源：
https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-62420030/
关键词：
Linear Motor Linear Induction Motor Urban Transit System Mini-Subway Inverter Induction Motor Electric Machinery Power Electronics リニアモータリニア誘導モータインバータパワーエレクトロニクス

项目摘要

1. It was confirmed experimentally that dynamic operating points of linear induction motor(LIM) for driving a passenger vehicle were on the characteristics curves of steady state. The response of the thrust and the other characteristics corresponding to the supply frequency and voltage vary with the magnitude of the acceleration and the capacity of machine. It was confirmed that there was no problem of the response, in the V/f speed control test without speed feed-back on the test facility of LIM (lOOkVA, 25Hz, 44OV) for urban transit in our laboratory. As the capacity per one LIM is about 300-400 kVA and the maximum acceleration is 3-4 km/h/s in the case of practical LIM-driven subway vehicle, there is no problem of the response even in the practical use.2. It was found that the electromagnetic analysis for steady state could be applied even for the discussion of the dynamic characteristics and optimum operating point of LIM. The results of simulations for the dynamic characteristics … More proved the accuracy of the theory from comparing with measured results. In the simulation, the simplified space harmonic technique with short calculation time, which was proposed by authors, and motion equation considered with inertia of mass were used.3. For the speed control of LIM for urban transit, the slip frequency control is useful, and the complicated vector control is not required. As a determination method of the optimum slip frequency, the following two conditions are useful and make easy to do it, because these limit the optimum region. (a) in the region for optimum (output kW)/(input kVA), thrust/(input kW) and efficiency at each frequency (b) in the region of that the thrust is larger than the required value at rated current, the attractive vertical force is smaller than the limited value at the rated current.4. It was found that the change of characteristics was small for change of the air gap and a lateral displacement even in the case of current control, as a output control of inverter for LIM drive. So, a current source type PWM inverter should be also discussed for power controller of LIM. Less

1.通过实验证实了客车用直线感应电动机的动态工作点在稳态特性曲线上。电机的推力响应和其它特性随加速度的大小和电机的容量而变化。在本实验室的城市轨道交通直线电机（100 kVA，25 Hz，440 V）试验装置上进行了无速度反馈的V/f速度控制试验，结果表明，无速度反馈的V/f速度控制试验不存在响应问题。由于每台直线电机的容量约为300-400 kVA，实际直线电机驱动的地铁车辆的最大加速度为3-4 km/h/s，因此即使在实际使用中也不存在响应问题.结果表明，稳态电磁场分析可用于讨论直线感应电机的动态特性和最佳工作点。动态特性的仿真结果 ...更多信息通过与实测结果的比较，证明了理论的正确性。在仿真中，采用了作者提出的计算时间短的简化空间谐波技术，并考虑了质量惯性的运动方程.对于城市轨道交通直线电机的速度控制，转差频率控制是有效的，而不需要复杂的矢量控制。作为最佳滑差频率的确定方法，以下两个条件是有用的，并且容易实现，因为它们限制了最佳区域。(a)在各频率下的最佳（输出kW）/（输入kVA）、推力/（输入kW）、效率（B）的区域中，在额定电流下的推力大于要求值的区域中，垂直吸引力小于额定电流下的限制值。发现即使在电流控制的情况下，作为用于LIM驱动的逆变器的输出控制，气隙和横向位移的变化的特性变化也很小。因此，电流源型PWM逆变器作为直线感应电机的功率控制器也值得探讨。少