TY - GEN
T1 - Analytical model of Dual PM Vernier Machines based on Differential Magnetic Circuit
AU - Huang, Hailin
AU - Zou, Tianjie
AU - Li, Dawei
AU - Qu, Ronghai
AU - Degano, Michele
AU - Gerada, Chris
N1 - Publisher Copyright:
© 2023 IEEE.
PY - 2023
Y1 - 2023
N2 - This paper introduces an enhanced analytical model for the dual PM vernier machine (DPVM), which can achieve higher torque density than regular PM machines by utilizing multiple torque components. The model is based on a differential magnetic circuit (DMC) airgap radial flux density (ARFD) analytical method that considers the multiple sources of excited MMF on both rotor and stator sides. Initially, the slotless ARFD of the consequent pole magnet (CPM) is derived using the DMC method, and subsequently, the slotted ARFD is obtained and validated by 2D FEA results. The deviation of salient pole ARFD due to the rise of magnetic potential is also analyzed, and a corrected equation is presented. Equations for the no-load back EMF and average torque of DPVMs are then derived based on the working ARFD. The influence of flux saturation on the torque performance of DPVM is discussed through simulations of DPVMs with different core materials. Finally, the analytical performances of DPVMs under varied parameters are presented and compared with FEA results, demonstrating the potential application of the proposed analytical method in the initial parameter design of DPVMs.
AB - This paper introduces an enhanced analytical model for the dual PM vernier machine (DPVM), which can achieve higher torque density than regular PM machines by utilizing multiple torque components. The model is based on a differential magnetic circuit (DMC) airgap radial flux density (ARFD) analytical method that considers the multiple sources of excited MMF on both rotor and stator sides. Initially, the slotless ARFD of the consequent pole magnet (CPM) is derived using the DMC method, and subsequently, the slotted ARFD is obtained and validated by 2D FEA results. The deviation of salient pole ARFD due to the rise of magnetic potential is also analyzed, and a corrected equation is presented. Equations for the no-load back EMF and average torque of DPVMs are then derived based on the working ARFD. The influence of flux saturation on the torque performance of DPVM is discussed through simulations of DPVMs with different core materials. Finally, the analytical performances of DPVMs under varied parameters are presented and compared with FEA results, demonstrating the potential application of the proposed analytical method in the initial parameter design of DPVMs.
KW - airgap flux density
KW - analytical method
KW - multi-torque component machine
KW - PM machines
UR - https://www.scopus.com/pages/publications/85172738903
U2 - 10.1109/IEMDC55163.2023.10238963
DO - 10.1109/IEMDC55163.2023.10238963
M3 - Conference contribution
AN - SCOPUS:85172738903
T3 - 2023 IEEE International Electric Machines and Drives Conference, IEMDC 2023
BT - 2023 IEEE International Electric Machines and Drives Conference, IEMDC 2023
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 2023 IEEE International Electric Machines and Drives Conference, IEMDC 2023
Y2 - 15 May 2023 through 18 May 2023
ER -