Torque Ripple Description and Its Suppression through Flux Linkage Reconstruction

Paper #:
  • 2017-01-9077

Published:
  • 2017-06-17
DOI:
  • 10.4271/2017-01-9077
Citation:
Zhong, Z., Li, J., Zhou, S., Zhou, Y. et al., "Torque Ripple Description and Its Suppression through Flux Linkage Reconstruction," SAE Int. J. Alt. Power. 6(2):175-182, 2017.
Pages:
8
Abstract:
Description of PMSM torque in high accuracy is critical and previous work for its further research. However, the traditional linear torque model fails to describe its non-ideal characteristics of practical working. This paper presents a generalized torque model of PMSM based on flux linkage reconstruction. In synchronous rotating space coordinates, flux linkage were reconstructed through Fourier series expansion and bivariate polynomial. Based on this model, a precise PMSM torque ripple description and corresponding suppression method were developed. Current feed-forward compensation and the rotor field oriented control were applied in torque ripple suppression. Simulation and experimental results both show that the model not only accurately describes the nonlinear variation of PMSM torque in different working conditions, but also can be used to suppress PMSM torque ripple effectively.
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