Torque Maximization Control of 3-Phase BLDC Motors in the High Speed Region

Won-Sang Im; Jong-Pil Kim; Jang-Mok Kim; Kwang-Ryul Baek

Torque Maximization Control of 3-Phase BLDC Motors in the High Speed Region

Vol. 10, No. 6, pp. 717-723, Nov. 2010

10.6113/JPE.2010.10.6.717

3-phase BLDCM

Advance angle

High speed operation

Torque maximization control

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Abstract

This paper proposes a new torque control algorithm for BLDC motors to get the maximum torque in the high speed region. The delay of the phase currents is severe due to the stator reactance. The torque fluctuations of BLDC motors increase and the average torque is decreases due to a slow rise in the phase current when compared to the back EMF. In this paper, the phase current of BLDC motors under the high speed condition is analyzed and a torque maximization control is developed on the basis of using numerical analysis. Computer simulations and experimental results show the usefulness of the proposed control algorithm.

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Cite this article

[IEEE Style]

W. Im, J. Kim, J. Kim, K. Baek, "Torque Maximization Control of 3-Phase BLDC Motors in the High Speed Region," Journal of Power Electronics, vol. 10, no. 6, pp. 717-723, 2010. DOI: 10.6113/JPE.2010.10.6.717.

[ACM Style]

Won-Sang Im, Jong-Pil Kim, Jang-Mok Kim, and Kwang-Ryul Baek. 2010. Torque Maximization Control of 3-Phase BLDC Motors in the High Speed Region. Journal of Power Electronics, 10, 6, (2010), 717-723. DOI: 10.6113/JPE.2010.10.6.717.