Analysis of Consequent-Pole Flux Reversal Permanent Magnet Machine With Biased Flux Modulation Theory

Analysis of Consequent-Pole Flux Reversal Permanent Magnet Machine With Biased Flux Modulation Theory
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偏置磁通调制理论交替极磁通反转永磁电机分析

DOI:
10.1109/tie.2019.2902816
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发表时间:
2020-03
影响因子:
7.7
通讯作者:
Lyu Shukang
Lyu Shukang
中科院分区:
计算机科学1区
文献类型:
--
作者:
Yang Hui;Zhu Z. Q.;Lin Heyun;Li Huayang;Lyu Shukang

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提出了一种偏置磁通调制理论的相继磁极反转电机(CP-FRM),该电机采用在相邻定子极之间放置同极永磁体(PM)。从移磁式永磁同步电机的角度介绍了该电机的拓扑结构,并与原有的表面贴装永磁电机(SPM)进行了性能比较,突出了CP结构对转矩的改善。然后,将简化的磁导模型应用于CP-FRM,以识别参与转矩产生的主要有效气隙磁场谐波。结果表明,CP-FRM的工作原理是偏置的磁通调制效应,这是因为CP结构导致的气隙磁场分布不对称,揭示了其相对于SPM-FRM的潜在的扭矩改善机理。为了获得最大的扭矩能力,通过对绕组结构的分析,对关键的设计参数进行了解析优化,这有助于建立CP-FRM的通用设计准则。通过实验验证了分析结果和有限元结果。
This paper proposes a consequent-pole flux reversal machine (CP-FRM) with biased flux modulation theory, which employs homopolar permanent magnets (PMs) placed between the adjacent stator poles. The machine topology is introduced from the perspective of FRM with a shifted magnet position and CP arrangement, and the performance comparison between the proposed CP-FRM and its original surface-mounted PM (SPM) counterpart is presented to highlight the torque improvement of the CP structure. Then, a simplified permeance model is applied to the CP-FRM to identify the principal effective air-gap field harmonics engaging in the torque productions. It shows that the CP-FRM works based on a biased flux modulation effect due to its asymmetric air-gap field distribution caused by the CP configuration, which unveils its underlying torque improvement mechanism over its SPM-FRM counterpart. In order to obtain the highest torque capability, the key design parameters are analytically optimized by analyzing the winding configuration, which aids the establishment of a general design guideline for the CP-FRM. The analytical and FE results are validated by experiments.
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