Abstract
This paper proposes a novel modular spoke-type permanent-magnet machine for in-wheel traction applications. First, the topology and the operating principle are briefly introduced. Then, an analytical model of the proposed machine is deduced based on conformal mapping. A three-phase 48-slot 52-pole modular spoke-type permanent-magnet (PM) machine is designed based on the deduced mathematical model where the dimensions and power source are constrained the same as those of a commercial three-phase surface PM machine in electric motorcycles. Electromagnetic performance comparisons among the proposed machine, the commercial machine, and a conventional spoke-type PM machine are conducted based on finite-element analysis (FEA) with respect to magnetic field, back electromotive force (EMF), flux-weakening capability, torque capability, machine efficiency, etc. The results indicate that the proposed machine has an improved torque, a higher efficiency, and an extremely better flux-weakening capability than the conventional in-wheel machine. Finally, a prototype machine is manufactured and tested to verify both the analytically and FEA predicted results.
| Original language | English |
|---|---|
| Pages (from-to) | 7648-7659 |
| Number of pages | 12 |
| Journal | IEEE Transactions on Industrial Electronics |
| Volume | 65 |
| Issue number | 10 |
| Early online date | 8 Feb 2018 |
| DOIs | |
| Publication status | E-pub ahead of print - 8 Feb 2018 |
Keywords
- AC machines
- brushless machines
- conformal mapping
- electric vehicles
- finite-element analysis (FEA)
- permanent-magnet (PM) machines
ASJC Scopus subject areas
- Control and Systems Engineering
- Electrical and Electronic Engineering
Cite this
Modular Spoke-Type Permanent-Magnet Machine for In-Wheel Traction Applications. / Zhang, Hengliang; Hua, Wei; Wu, Zhongze.
In: IEEE Transactions on Industrial Electronics, Vol. 65, No. 10, 08.02.2018, p. 7648-7659.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Modular Spoke-Type Permanent-Magnet Machine for In-Wheel Traction Applications
AU - Zhang, Hengliang
AU - Hua, Wei
AU - Wu, Zhongze
PY - 2018/2/8
Y1 - 2018/2/8
N2 - This paper proposes a novel modular spoke-type permanent-magnet machine for in-wheel traction applications. First, the topology and the operating principle are briefly introduced. Then, an analytical model of the proposed machine is deduced based on conformal mapping. A three-phase 48-slot 52-pole modular spoke-type permanent-magnet (PM) machine is designed based on the deduced mathematical model where the dimensions and power source are constrained the same as those of a commercial three-phase surface PM machine in electric motorcycles. Electromagnetic performance comparisons among the proposed machine, the commercial machine, and a conventional spoke-type PM machine are conducted based on finite-element analysis (FEA) with respect to magnetic field, back electromotive force (EMF), flux-weakening capability, torque capability, machine efficiency, etc. The results indicate that the proposed machine has an improved torque, a higher efficiency, and an extremely better flux-weakening capability than the conventional in-wheel machine. Finally, a prototype machine is manufactured and tested to verify both the analytically and FEA predicted results.
AB - This paper proposes a novel modular spoke-type permanent-magnet machine for in-wheel traction applications. First, the topology and the operating principle are briefly introduced. Then, an analytical model of the proposed machine is deduced based on conformal mapping. A three-phase 48-slot 52-pole modular spoke-type permanent-magnet (PM) machine is designed based on the deduced mathematical model where the dimensions and power source are constrained the same as those of a commercial three-phase surface PM machine in electric motorcycles. Electromagnetic performance comparisons among the proposed machine, the commercial machine, and a conventional spoke-type PM machine are conducted based on finite-element analysis (FEA) with respect to magnetic field, back electromotive force (EMF), flux-weakening capability, torque capability, machine efficiency, etc. The results indicate that the proposed machine has an improved torque, a higher efficiency, and an extremely better flux-weakening capability than the conventional in-wheel machine. Finally, a prototype machine is manufactured and tested to verify both the analytically and FEA predicted results.
KW - AC machines
KW - brushless machines
KW - conformal mapping
KW - electric vehicles
KW - finite-element analysis (FEA)
KW - permanent-magnet (PM) machines
UR - http://www.scopus.com/inward/record.url?scp=85041539892&partnerID=8YFLogxK
U2 - 10.1109/TIE.2018.2803724
DO - 10.1109/TIE.2018.2803724
M3 - Article
VL - 65
SP - 7648
EP - 7659
JO - IEEE Transactions on Industrial Electronics
JF - IEEE Transactions on Industrial Electronics
SN - 0278-0046
IS - 10
ER -