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Research of the Hish Efficiency Induction Motor with Built-in Magnet

高效内置磁铁感应电动机的研究

基本信息

批准号：
12650296
负责人：
TSUCHIDA Nuio
金额：
$ 2.24万
依托单位：
Toyota Technological Institute
依托单位国家：
日本
项目类别：
Grant-in-Aid for Scientific Research (C)
财政年份：
2000
资助国家：
日本
起止时间：
2000 至 2001
项目状态：
已结题

来源：
https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-12650296/
关键词：
built-in magnet motor double caged rotor equivalent circuit high torque high efficiency variable power factor magnetic field analysis 2重籠型ロータ磁石内蔵誘導電動機 2重かご型ロータ

项目摘要

In this research, aiming at developing a new induction motor with high performance, we investigated a unique induction motor with built-in magnet that rotates freely in its caged rotor. The built-in magnet induction motor had interest characteristics of high torque, high efficiency and variable power factor. Referring to its magnetic circuit model, electric equivalent circuit that was not clear until now was derived for the built-in magnet induction motor. The interest characteristics of a built-in magnet motor could be analyzed by the equivalent circuit.Since this built-in magnet induction motor has a problems that starting torque is small and that field weakening control is necessary in high-speed area, a built-in magnet induction motor that adopted a double caged rotor was developed to solve this problem. The new induction motor was possible to start for less than 60% of a rating torque. Efficiency characteristic was measured for built-in magnet induction motor with double caged rotor in various frequencies. Against expectation, the efficiency of magnet type induction motor with double caged rotor was lower than that of marketing machine in low frequency, and low output area, but in high frequency and high load area, the efficiency became much higher than that of other induction motor. This weak point can be overcome by improving its conductor structure of rotor.The magnetic field analysis seemed impossible for the built-in magnet induction motor, because its structure and motion were very complicated. In this research we succeeded for the first time in its magnetic field analysis by devising analytical method.

在本研究中，以开发一种新型的高性能感应电动机为目标，我们研究了一种独特的感应电动机，该电动机具有内置磁铁，在其笼形转子中自由旋转。内置磁铁感应电动机具有大扭矩、高效率和可变功率因数的有趣特性。根据内藏式永磁感应电动机的磁路模型，推导出了目前尚不明确的内藏式永磁感应电动机的等效电路。利用等效电路分析内置式永磁电机的特性，针对内置式永磁电机存在起动转矩小、高速区需要弱磁控制等问题，提出了一种采用双笼型转子的内置式永磁电机。新的感应电动机可以在低于额定扭矩的60%的情况下启动。测量了双笼型转子内置永磁感应电动机在不同频率下的效率特性。与预期相反，双笼转子永磁式异步电动机在低频、低功率区的效率低于市场上的电机，但在高频、高负载区，效率大大高于其他异步电动机。这一弱点可以通过改进转子的导体结构来克服。内置式永磁感应电动机由于其结构和运动的复杂性，使得磁场分析成为不可能。本研究通过设计解析方法，首次成功地对其磁场进行了分析。