CAJ | 학술논문

记忆电机利用铝镍钴(aluminum-nickel-cobalt，AlNiCo)永磁材料的高剩磁、低矫顽力特性，通过施加瞬时的充去磁电流脉冲来改变永磁体磁化状态，以实现高效的在线调磁，被认为是一种真正意义上的可变磁通永磁电机，非常适于电动汽车、高速机床和飞轮储能等领域的应用。根据施加脉冲调磁电流的方式，记忆电机可以分为交流脉冲调磁型和直流脉冲调磁型两大类。该文分析并总结了现有记忆电机的结构特点、工作原理和各自的优缺点，阐述了记忆电机的关键共性问题，并针对现有记忆电机存在的不足，提出了一类磁通切换型记忆电机。该类电机具有感应电动势波形正弦、气隙磁通易于调节、定位力矩和转矩脉动小和容错能力强等优点，通过在线调磁与驱动的协调控制，可以使之适用于高精度宽调速伺服应用。该文对记忆电机的理论研究与工程应用具有一定的参考价值。
기억전궤이용려얼고(aluminum-nickel-cobalt，AlNiCo)영자재료적고잉자、저교완력특성，통과시가순시적충거자전류맥충래개변영자체자화상태，이실현고효적재선조자，피인위시일충진정의의상적가변자통영자전궤，비상괄우전동기차、고속궤상화비륜저능등영역적응용。근거시가맥충조자전류적방식，기억전궤가이분위교류맥충조자형화직류맥충조자형량대류。해문분석병총결료현유기억전궤적결구특점、공작원리화각자적우결점，천술료기억전궤적관건공성문제，병침대현유기억전궤존재적불족，제출료일류자통절환형기억전궤。해류전궤구유감응전동세파형정현、기극자통역우조절、정위력구화전구맥동소화용착능력강등우점，통과재선조자여구동적협조공제，가이사지괄용우고정도관조속사복응용。해문대기억전궤적이론연구여공정응용구유일정적삼고개치。
The memory machine (MM), which employs aluminum-nickel-cobalt (AlNiCo) permanent magnet (PM) with intrinsical low coercivity and high remanence, is referred to as a genuine variable flux PM machine. It can achieve efficient online flux-adjustment by applying a temporary remagnetizing or demagnetizing current pulse to tune the magnetization state of PM, which exhibits significant feasibility for wide speed range operations, e.g. electric vehicles, high-speed machine tools and fly wheel energy storage applications. In terms of the pulsed current applying pattern, MM is categorized into AC-pulsed type and DC-pulsed type respectively. Additionally, this paper overviews the existing MMs with particular reference to their topological features, operating principles, merits and demerits, and then elaborates the common key problems of MMs. Finally, a novel embranchment of MMs entitled the flux-switching MM (FS-MM) is proposed to overcome some shortcomings of the existing MMs. Since it features sinusoidal back-EMF, remarkable flux controllability, low cogging torque and low torque ripple and sound fault-tolerant capability when it is operating, the proposed FS-MM can meet the requirements of highly precise wide-speed range servo applications through the coordinated control of the flux-adjustment and drive. The works of this paper can provide some reference for future theoretical study and engineering applications of MMs.