عنوان مقاله:

نویسندگان:

محمدرضا نعیمی، کریم عباس زاده، یوهان جیسیلینگ

Consequent-pole Permanent Magnet (CPM) machines have been widely proposed due to the high Permanent Magnet (PM) utilization ratio. However, CPM machines suffer from asymmetrical air gap flux density due to using PMs with the same polarity, which causes high torque ripple and asymmetrical back Electro Motive Force (EMF) voltage. So, the purpose of this paper is to present a new L-type modular outer-rotor consequent-pole permanent magnet (LMOCPM) machine with different PM and iron pole sequences to enhance the electromagnetic performance of CPMs. In order to reduce PM and rotor core volume simultaneously, the modular rotor is combined with the CPM concept to create a new structure for the PM machine. Consequently, rotor loss is low, and PM utilization is high in the proposed machine. Firstly, the different PM topologies with various N, S, and iron pole sequences are presented for the proposed LMOCPM machine. Then, LMOCPM machines and modular surface-mounted PM (MSPM) machine are investigated based on the magnetic circuit model to show the positive impacts of modular structures with unipolar PMs. A Finite Element Method (FEM) has also been used to analyze their electromagnetic performances, including air gap flux density, flux linkage, cogging torque, and on-load torque. Finally, the results show that the proposed LMOCPM machines use 39% less PM material than MSPM, although the average torque almost remains unchanged in LMOCPM1 and LMOCPM2 machines compared to the MSPM machine. As a result, the PM utilization ratio increased by 61%. Further, the torque ripple for the proposed LMOCPM1 and LMOCPM2 machines are dramatically dropped to 15.7% and 14.1%, whereas the MSPM machine torque ripple is 23.2%.

Modular rotor, consequent-pole motor, iron pole, cogging torque, magnetic circuit model

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نعیمی، محمدرضا، عباس زاده، کریم، جیسیلینگ، یوهان، 1401، یک ماشین قطب پی آیند روتور بیرونی قطعه قطعه با توالی آهنربا و قطب آهنی متفاوت، دومین کنفرانس بین المللی موتور ها و ژنراتورهای الکتریکی، https://cnf.hsu.ac.ir/fa/archive_index.php?c=icemg2023&aid=70954