TY - JOUR
T1 - New Optimal Current Control Strategy for Six-Phase DC-Biased Vernier Reluctance Machines Considering Distorted EMF
AU - Yu, Zixiang
AU - Li, Dawei
AU - Kong, Wubin
AU - Qu, Ronghai
AU - Jia, Shaofeng
AU - Jiang, Dong
AU - Zhou, You
N1 - Publisher Copyright:
© 1986-2012 IEEE.
PY - 2018/12
Y1 - 2018/12
N2 - The distorted back electromotive force (EMF) waveforms of dc-biased vernier reluctance machines result in stator current distortion, torque ripple, and efficiency reduction. For the purpose of eliminating the harmonic currents and optimizing the phase current, a new optimal current control strategy is proposed by utilization of accurate fundamental and harmonic voltage equations. Each harmonic component is decoupled in the multilevel synchronous rotating coordinate. The interactions between the multiple harmonic currents are avoided, and it assures a strong robustness. The harmonic currents can be suppressed significantly both in steady-state and dynamic operation, and it has a positive effect on the efficiency and torque ripple. Furthermore, a modified maximum torque per ampere curve considering inductance nonlinearity is achieved by adjusting the dc-ac current ratio under different phase currents, aiming to maximize the output capacity. Finally, the effectiveness of the proposed optimal current control strategy is validated experimentally for a prototype machine.
AB - The distorted back electromotive force (EMF) waveforms of dc-biased vernier reluctance machines result in stator current distortion, torque ripple, and efficiency reduction. For the purpose of eliminating the harmonic currents and optimizing the phase current, a new optimal current control strategy is proposed by utilization of accurate fundamental and harmonic voltage equations. Each harmonic component is decoupled in the multilevel synchronous rotating coordinate. The interactions between the multiple harmonic currents are avoided, and it assures a strong robustness. The harmonic currents can be suppressed significantly both in steady-state and dynamic operation, and it has a positive effect on the efficiency and torque ripple. Furthermore, a modified maximum torque per ampere curve considering inductance nonlinearity is achieved by adjusting the dc-ac current ratio under different phase currents, aiming to maximize the output capacity. Finally, the effectiveness of the proposed optimal current control strategy is validated experimentally for a prototype machine.
KW - Control strategy
KW - dc-biased
KW - harmonic suppression
KW - optimal current
KW - vernier reluctance machines (VRMs)
UR - https://www.scopus.com/pages/publications/85041502240
U2 - 10.1109/TPEL.2018.2803824
DO - 10.1109/TPEL.2018.2803824
M3 - 文章
AN - SCOPUS:85041502240
SN - 0885-8993
VL - 33
SP - 10633
EP - 10645
JO - IEEE Transactions on Power Electronics
JF - IEEE Transactions on Power Electronics
IS - 12
M1 - 8286969
ER -