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New Approach to Cogging Torque Simulation Using Numerical Functions
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DOI：10.1109/TIA.2013.2293814.png)
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Abstract
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This paper presents a new approach for simulation of the cogging torque in a permanent-magnet (PM) machine. The method exploits the numerical functions for modeling the magnetic circuit of the machine. This paper introduces two improved functions to model the PMs and the air-gap permeance, aiming to compute the cogging torque in the PM machine. The first function states the magnetomotive-force drop on the machine air gap with respect to the angular position. The other function, named permeance function, models the air-gap permeance accurately, taking into account the stator saliency due to the teeth. The described procedure has been tested on a prototype PM machine.
Keywords:
Electrical machine modeling
permanent magnet (PM)
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