TY - GEN
T1 - Effect of Geometry of Permanent Magnets on Low-Frequency Rotational Energy Harvesting Using Halbach Array
AU - Peng, Tingrui
AU - Liu, Haipeng
AU - Zhang, Xiangyong
AU - Tang, Lihua
N1 - Publisher Copyright:
© The Author(s), under exclusive license to Springer Nature Singapore Pte Ltd. 2025.
PY - 2025
Y1 - 2025
N2 - Halbach array is a new type of permanent magnet array. Its special permanent magnet arrangement structure can not only increase the air gap magnetic flux but also weaken the magnetic flux density of the rotor yoke, thus increasing the energy density while reducing the size and cost of the motor. For the Halbach array, when the rotor volume is constant, the volume of the permanent magnet used by the cubic permanent magnet is smaller than that of the sector-shaped permanent magnet. Therefore, the impact of special-shaped permanent magnets on the energy capture efficiency of the Halbach array can be explored. This paper compares the magnetic field distribution of three common special-shaped permanent magnets, rectangular, trapezoidal, and sector-shaped, under the same rotor volume, using the same volume of special-shaped permanent magnets and using the same volume of the rotor under two different operating conditions and energy efficiency. Simulations and experiments show that the energy capture effect of the Halbach array composed of sector-shaped permanent magnets is the best whether using permanent magnets of the same volume or rotors of the same volume.
AB - Halbach array is a new type of permanent magnet array. Its special permanent magnet arrangement structure can not only increase the air gap magnetic flux but also weaken the magnetic flux density of the rotor yoke, thus increasing the energy density while reducing the size and cost of the motor. For the Halbach array, when the rotor volume is constant, the volume of the permanent magnet used by the cubic permanent magnet is smaller than that of the sector-shaped permanent magnet. Therefore, the impact of special-shaped permanent magnets on the energy capture efficiency of the Halbach array can be explored. This paper compares the magnetic field distribution of three common special-shaped permanent magnets, rectangular, trapezoidal, and sector-shaped, under the same rotor volume, using the same volume of special-shaped permanent magnets and using the same volume of the rotor under two different operating conditions and energy efficiency. Simulations and experiments show that the energy capture effect of the Halbach array composed of sector-shaped permanent magnets is the best whether using permanent magnets of the same volume or rotors of the same volume.
KW - Electromagnetic energy harvest
KW - Halbach array
KW - Special-shaped permanent magnet
UR - http://www.scopus.com/inward/record.url?scp=105002054824&partnerID=8YFLogxK
U2 - 10.1007/978-981-96-1191-1_3
DO - 10.1007/978-981-96-1191-1_3
M3 - Conference contribution
AN - SCOPUS:105002054824
SN - 9789819611904
T3 - Lecture Notes in Mechanical Engineering
SP - 21
EP - 32
BT - The 5th International Conference on Vibration and Energy Harvesting Applications, VEH 2024
A2 - Tang, Lihua
A2 - Aw, Kean
A2 - Hu, Guobiao
A2 - Wang, Junlei
PB - Springer Science and Business Media Deutschland GmbH
T2 - 5th International Conference on Vibration and Energy Harvesting Applications, VEH 2024
Y2 - 25 June 2024 through 28 June 2024
ER -
