Variable Speed Drive System of Permanent Magnet Synchronous Motors with Flux-weakening Control
Variable Speed Drive System of Permanent Magnet Synchronous Motors with Flux-weakening Control
复制标题
弱磁控制永磁同步电机变速驱动系统
DOI：
10.1541/ieejias.112.292
复制
发表时间：
1992
影响因子：
--
通讯作者：
T. Hirasa
中科院分区：
文献类型：
--
作者：
S. Morimoto;K. Hatanaka;Y. Tong;Y. Takeda;T. Hirasa
永磁同步（PM）电机广泛用于工业应用。在牵引和主轴驱动中，恒定功率操作和宽速度范围是理想的。对于直流电机驱动器，这些是通过随着速度的增加适当降低励磁电流来实现的。在永磁电机中，无法实现磁通的直接控制。然而，气隙磁通可以被直轴电枢反应削弱。这种控制技术被称为“弱磁”而不是“弱磁”。本文介绍了一种永磁电动机的调速系统，以实现恒功率和宽调速范围的运行。在所提出的控制系统中，应用了一种新的弱磁技术。控制电流矢量，使得在低速时可以获得每电枢电流的最大转矩，并且在高速时将端电压保持在其限定值内。仿真和实验结果验证了该控制器的控制性能。
Permanent magnet synchronous (PM) motors are widely used for industrial applications. In traction and spindle drives, the constant power operation and wide speed range are desirable. With DC motor drives, these are achieved by the appropriate reduction of the field current as the speed increases. In the PM motor, the direct control of magnet flux is not available. The air-gap flux, however, can be weakened by the direct axis armature reaction. This control technique is called “flux-weakening” instead of “field-weakening”. This paper describes a variable speed drive system of PM motor for the constant power and wide speed range operations. In the proposed control system, a novel flux-weakening technique is applied. The current vector is controlled so that the maximum torque per armature current can be obtained at low speeds and the terminal voltage is kept within its limited value at high speeds. The control performances are examined by the simulations and the experimental results.