A Comparative Study of Constant Power Operation Techniques for Low Inductance Machines
A Comparative Study of Constant Power Operation Techniques for Low Inductance Machines
复制标题
低电感电机恒功率运行技术的比较研究
DOI：
10.1109/itec.2018.8450184
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发表时间：
2018
期刊：
影响因子：
--
通讯作者：
D. Ionel
中科院分区：
文献类型：
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作者：
D. Lawhorn;N. Taran;V. Rallabandi;D. Ionel
在传统电机中，通常可以通过注入负d轴电流分量来弱磁来实现恒功率高速运行。然而，在具有低电枢电感的电机中，例如高功率密度永磁同步电机，更具体地说，无芯电机，由于其高比扭矩而受到越来越多的关注，使用这种方法获得的扩展速度范围非常窄。本文总结了现有恒功率运行方法的性能特点，提出了两种特别适用于无芯轴向磁通永磁电机的新技术，即电流弱化和相对绕组旋转。
In traditional electric machines, it is usually possible to achieve constant power high-speed operation by employing field weakening through the injection of a negative d-axis current component. However, in machines with low armature inductance, such as high power density permanent magnet synchronous machines, and more specifically, coreless machines, which are gaining increasing attention because of their high specific torque, the extended speed range obtained using this method is very narrow. This paper summarizes the performance characteristics of existing approaches for obtaining constant power operation and proposes two new techniques, specially applicable to coreless axial flux permanent magnet machine namely, current weakening and relative winding rotation.