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Proposal and experimental study on permanent magnet-type transverse flux synchronous machines with a disk rotor for large torque direct drives

大扭矩直驱盘式转子永磁横向磁通同步电机的提出及实验研究

基本信息

批准号：
21560291
负责人：
KOSEKI Takafumi
金额：
$ 3万
依托单位：
The University of Tokyo
依托单位国家：
日本
项目类别：
Grant-in-Aid for Scientific Research (C)
财政年份：
2009
资助国家：
日本
起止时间：
2009 至 2011
项目状态：
已结题

项目摘要

Direct drive motor solutions are becoming increasingly important in electric motor applications from hybrid vehicles to electric ships. New type permanent magnet synchronous motors(PMSMs) such as a transverse flux machine are an attractive option for such applications because of high torque characteristics. Hence a C-core type transverse flux PMSM for electric ships has been proposed and studied theoretically and experimentally in this research. This motor had some critical problems such as high cogging torque and unexpectedly large resistance torque in our early study stage. We have, therefore, proposed the methods for higher performance in a transverse flux type PMSM for electric ships, especially focusing on reducing cogging torque and maximizing torque. We habe built a prototype motor with low cogging torque characteristics using carefully designrd pole-core combination. Maximizing torque method under the space constraint using magnetic circuit method has been theoretically investigated. We have simultaneously investigated possibility of applying the current type dual sampling rate observer to low speed drive controls in our prototype experimental bench. Experimental results demonstrate validity of low speed driving control of the proposed synchronous motor with large number of poles with the current type dual sampling rate observer. For further development of large torque machines, we are continuing invstigations on machine designe methodology based on siplified magnetic circuit calculations.

从混合动力汽车到电动船舶，直接驱动电机解决方案在电动机应用中变得越来越重要。新型永磁同步电机（pmms），如横向磁通机是一个有吸引力的选择，因为这类应用的高扭矩特性。为此，本文提出了一种用于电动船舶的c芯型横向磁通永磁同步电机，并对其进行了理论和实验研究。在研究初期，该电机存在齿槽转矩过大、阻力转矩过大等关键问题。因此，我们提出了提高电动船舶横向磁通型永磁同步电机性能的方法，特别是在减小齿槽转矩和最大化转矩方面。我们已经建立了一个原型电机低齿槽转矩特性使用精心设计的极-芯组合。从理论上研究了磁路法在空间约束下的最大转矩方法。同时，我们在原型实验台上研究了将当前型双采样率观测器应用于低速驱动控制的可能性。实验结果表明，采用电流型双采样率观测器对大磁极同步电机进行低速驱动控制是有效的。为了进一步开发大扭矩电机，我们正在继续研究基于简化磁路计算的电机设计方法。