Abstract
This article proposes a 2-D static finite-element (S-FE) analysis method for slip-magnetic couplings (S-PMC). It is found that the traditional assumptions regarding the influence of the <inline-formula xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink"><tex-math notation="LaTeX">$dq$</tex-math></inline-formula> -PM flux linkages and the <inline-formula xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink"><tex-math notation="LaTeX">$dq$</tex-math></inline-formula> -inductances on the machine performance can result in a significant error when predicting the maximum torque of S-PMCs used in wind turbine applications. The proposed method solves this by incorporating the frozen permeability technique, which enables the user to quickly and accurately determine the relevant modelling parameters and machine performance results over a wide slip range. Moreover, the proposed analysis method accurately predicts the zero-sequence ( <inline-formula xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink"><tex-math notation="LaTeX">$\mathbf {3{rd}}$</tex-math></inline-formula> harmonic) and higher-order harmonic induced voltages and currents that are present in magnetic couplings. The method is verified by comparing its results to those obtained from a commercial transient FE (T-FE) package, and measurements of a 1000 Nm S-PMC prototype. The S-FE method solutions are verified over a wide slip range and are shown to be significantly less computationally time-intensive compared to the T-FE package, making it ideally suited for design optimization purposes.
Published Version
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call