An Optimal Current Distribution Method of Dual-Rotor BLDC Machines


Vol. 13, No. 2, pp. 250-255, Mar. 2013
10.6113/JPE.2013.13.2.250


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 Abstract

This paper proposes an optimal current distribution method of dual-rotor brushless DC machines (DR-BLDCMs) which have inner and outer surface-mounted permanent-magnet rotors. The DR-BLDCM has high power density and high torque density compare to the conventional single rotor BLDCM. To drive the DR-BLDCM, dual 3-phase PWM inverters are required to excite the currents of a dual stator of the DR-BLDCM and an optimal current distribution algorithm is also needed to enhance the system efficiency. In this paper, the copper loss and the switching loss of a DR-BLDCM drive system are analyzed according to the motor parameters and the switching frequency. Moreover, the optimal current distribution method is proposed to minimize the total electrical loss. The validity of the proposed method was verified through several experiments.


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Cite this article

[IEEE Style]

S. Kim, J. Park, W. Im, H. Jung, J. Kim, "An Optimal Current Distribution Method of Dual-Rotor BLDC Machines," Journal of Power Electronics, vol. 13, no. 2, pp. 250-255, 2013. DOI: 10.6113/JPE.2013.13.2.250.

[ACM Style]

Sung-Jung Kim, Je-Wook Park, Won-Sang Im, Hyun-Woo Jung, and Jang-Mok Kim. 2013. An Optimal Current Distribution Method of Dual-Rotor BLDC Machines. Journal of Power Electronics, 13, 2, (2013), 250-255. DOI: 10.6113/JPE.2013.13.2.250.