TY - JOUR
T1 - Design and Control of a New Compound Double-Rotor Electric Machine for Hybrid Propulsion System
AU - Zhao, Hang
AU - Liu, Chunhua
AU - Song, Zaixin
AU - Liu, Senyi
N1 - Funding Information:
This work was supported in part by the Natural Science Foundation of China, China under Grants 52077186 and 51677159, in part by the Shenzhen-Hong Kong Innovation Circle Category D Project the Science Technology and Innovation Committee of Shenzhen Municipality, China under Grant SGDX2019081623101559, and in part by the Innovation and Technology Commission, Hong Kong under Project ITP/027/19AP.
Publisher Copyright:
© 1986-2012 IEEE.
PY - 2022/3/1
Y1 - 2022/3/1
N2 - In this article, a new compound consequent-pole double-rotor electric machine (CCPDRM) is proposed for hybrid propulsion system application. First, the operating principle and harmonic components in CCPDRMs are elucidated. The winding factor theory for conventional permanent magnet (PM) electric machines is further extended and applied in CCPDRMs. Then, this improved theory is adopted to investigate the structure and winding scheme requirement of the proposed CCPDRMs. In addition, the control strategy for the proposed CCPDRM is established. By utilizing a parameter sweep method, the variation trends of CCPDRMs' torque density with respect to various geometrical parameters are revealed. Based on this, the structure of CCPDRMs is optimized to acquire a better electromagnetic performance. Next, the proposed CCPDRM is compared with a conventional compound bipolar double-rotor electric machine (CBDRM). It is found that the improved topology has a similar torque density but a much higher PM utilization factor and a lower PM demagnetization risk when compared with the CBDRM. Finally, a prototype is manufactured and tested in different operating modes. Furthermore, various mode-switching processes are performed to emulate the practical driving cycle of hybrid transportation. Both steady-state and dynamic mode-switching experimental results prove the effectiveness of CCPDRMs.
AB - In this article, a new compound consequent-pole double-rotor electric machine (CCPDRM) is proposed for hybrid propulsion system application. First, the operating principle and harmonic components in CCPDRMs are elucidated. The winding factor theory for conventional permanent magnet (PM) electric machines is further extended and applied in CCPDRMs. Then, this improved theory is adopted to investigate the structure and winding scheme requirement of the proposed CCPDRMs. In addition, the control strategy for the proposed CCPDRM is established. By utilizing a parameter sweep method, the variation trends of CCPDRMs' torque density with respect to various geometrical parameters are revealed. Based on this, the structure of CCPDRMs is optimized to acquire a better electromagnetic performance. Next, the proposed CCPDRM is compared with a conventional compound bipolar double-rotor electric machine (CBDRM). It is found that the improved topology has a similar torque density but a much higher PM utilization factor and a lower PM demagnetization risk when compared with the CBDRM. Finally, a prototype is manufactured and tested in different operating modes. Furthermore, various mode-switching processes are performed to emulate the practical driving cycle of hybrid transportation. Both steady-state and dynamic mode-switching experimental results prove the effectiveness of CCPDRMs.
KW - Consequent pole
KW - hybrid propulsion
KW - mode switching
KW - permanent magnet (PM) machine
KW - utilization factor
KW - winding scheme
UR - http://www.scopus.com/inward/record.url?scp=85114746916&partnerID=8YFLogxK
U2 - 10.1109/TPEL.2021.3111815
DO - 10.1109/TPEL.2021.3111815
M3 - Journal article
AN - SCOPUS:85114746916
SN - 0885-8993
VL - 37
SP - 3283
EP - 3296
JO - IEEE Transactions on Power Electronics
JF - IEEE Transactions on Power Electronics
IS - 3
ER -