Memory motors
Memory motors
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DOI：
10.1109/mia.2003.1176459
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发表时间：
2003
影响因子：
0.8
通讯作者：
V. Ostović
中科院分区：
文献类型：
--
作者：
V. Ostović
介绍了一种新型永磁电机--记忆电机，它具有改变转子磁场强度和记忆转子磁场强度的能力。记忆电机可以作为一个可变通量或变极机。在这两种类型的电机中，永磁体的磁化可以通过短电流脉冲简单地改变，而不需要像传统的内部永磁电机那样在弱磁模式下使用永久退磁电流。消磁电流流过定子绕组，由与定子电流相同的电源供电。记忆电机联合收割机结合了绕线转子电机（可变转子磁通）和宽转速电机（无励磁损耗）的优点，从而形成了一种独特的电机概念，有可能在电力驱动中找到许多应用。
A new class of permanent-magnet (PM) machines, named memory motors for their ability to change the intensity of magnetization and memorize the flux density level in rotor magnets is described in the article. A memory motor can be built either as a variable-flux or pole-changing machine. In both machine types, the magnetization of PMs can be simply varied by a short current pulse, with no need for permanent demagnetizing current as in conventional internal PM machines at flux-weakening mode. The demagnetizing current flows through stator winding(s) supplied from the same source as the stator current. Memory motors combine advantages of a wound-rotor machine (variable rotor flux) with those of a wide-speed machine (no excitation losses), resulting in a unique machine concept that has the potential to find numerous applications in electric drives.