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IPMSMs (Interior Permanent Magnet Synchronous Motors) are widely used for many industrial applications. However, IPMSMs cause large noise and vibration due to torque ripple and radial force. In this paper, 6th radial force caused by harmonic current is analyzed and modelling of 6th radial force is constructed based on flux linkage Based on this modelling, 6th radial force is mitigated by injecting...
IPMSMs (Interior Permanent Magnet Synchronous Motors) are widely used for many industrial applications. However, IPMSMs cause large noise and vibration due to torque ripple and radial force. In this paper, 6th radial force modelling is constructed based on flux linkage and 6th radial force is controlled on the ground of this modelling. Firstly, we make some assumptions to lead 6th radial force modelling...
The relationship between electrical 2nd order radial force and dq-axis current is examined and 2nd order acceleration is suppressed in this paper. On no-load condition, flux distribution is approximated in order to calculate radial force. Radial force on a tooth is obtained by using maxwell stress equation and approximation of flux distriution. Considering cyclic nature of 3-phase, optimal d-axis...
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