Abstract
This paper proposes a novel axial-flux permanent magnet machine (AFPM) employing ferrite permanent magnets (PMs) and round copper wire. The proposed AFPM adopts a novel rotor structure and uses tooth-tips with a suitable trapezoidal shape. These structures compensate for the low magnetomotive force of the round copper wire and ferrite PMs, achieving high performance at low cost. Additionally, compared with an off-the-shelf radial-flux permanent magnet machine (RFPM) using Nd-sintered PMs and rectangular copper wire, the proposed AFPM achieves the same output power and higher efficiency, despite using ferrite PMs and the round copper wire. Finally, a prototype of the proposed AFPM was manufactured and evaluated experimentally. The prototype achieved a high efficiency of over 95% across a wide operating area while maintaining required maximum torque, suggesting its potential for traction applications.
Original language | English |
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Pages (from-to) | 1-15 |
Number of pages | 15 |
Journal | IEEE Transactions on Industry Applications |
DOIs | |
Publication status | Accepted/In press - 2024 |
Keywords
- axial gap motor
- axial-flux machine
- carbon fiber rotor
- carbon fiber-reinforced plastic
- city commuter
- Copper
- Costs
- ferrite magnet
- Ferrites
- flat copper wire
- high circumferential speed
- radial-flux machine
- Rotors
- Stator cores
- Torque
- Wires
ASJC Scopus subject areas
- Control and Systems Engineering
- Industrial and Manufacturing Engineering
- Electrical and Electronic Engineering