An Accurate Mathematic Model for PMSM by Taking Total Losses and Saturation into Account

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An accurate mathematic model of permanent magnet synchronous motor (PMSM) is necessary for precise torque control and/or high efficiency drive control. This paper discusses the development model of PMSM by taking all losses and saturation into account. In the proposed model, all losses composing of the copper loss, core loss, mechanical loss and stray loss were analyzed to improve the torque equation. In addition, considering the influence of saturation level, the variations of the core loss resistance, direct-quadrature axis magnetic inductance and permanent magnet flux were discussed on support of the data analyzed by Ansoft. In order to verify the developed model, a start up simulation is performed in the mode of open-loop and the results confirm the validity of the model.

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Edited by:

Prasad Yarlagadda

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505-510

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F. Qiao and Z. Z. Liu, "An Accurate Mathematic Model for PMSM by Taking Total Losses and Saturation into Account", Applied Mechanics and Materials, Vol. 742, pp. 505-510, 2015

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March 2015

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