INDUCTANCE AND FLUX LINKAGE PERTURBATION ANALYSIS OF PERMANENT MAGNET SYNCHRONOUS WIND TURBINE UNDER BIDIRECTIONAL COUPLING OF ELECTROMAGNETIC-TEMPERATURE-FLUID FIELD

Li Jie; Wu Shuoyang; Liu Weibin; Zhou Anyue

doi:10.19912/j.0254-0096.tynxb.2023-2091

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Acta Energiae Solaris Sinica ›› 2025, Vol. 46 ›› Issue (4) : 469-476. DOI: 10.19912/j.0254-0096.tynxb.2023-2091

INDUCTANCE AND FLUX LINKAGE PERTURBATION ANALYSIS OF PERMANENT MAGNET SYNCHRONOUS WIND TURBINE UNDER BIDIRECTIONAL COUPLING OF ELECTROMAGNETIC-TEMPERATURE-FLUID FIELD

Li Jie^1,2, Wu Shuoyang^1,2, Liu Weibin³, Zhou Anyue⁴

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Abstract

Aiming to improve the accuracy of inductance and flux linkage calculation caused by inherent parameters perturbations during the operation of permanent magnet synchronous wind turbines, a method for analyzing inductance and flux linkage perturbations characteristics of permanent magnet synchronous generator （PMSG） is proposed, which takes into account of the multi field bidirectional coupling effect. A 2 MW permanent magnet synchronous wind turbines is given as an example. Firstly, based on electromagnetic and heat transfer theories, the PMSG heat source is analyzed, and an electromagnetic losses model is established. Combined with the spiral waterway structure of the permanent magnet synchronous wind turbines, the temperature rise in PMSG is analyzed, and a temperature-fluid physical field model is established. Based on the multi-physical field coupling mechanism, a multi-field bidirectional coupling model of PMSG electromagnetic-temperature-fluid field is established; Secondly, based on the bidirectional coupling model of electromagnetic field-temperature field-fluid field, the finite element alternating iteration method is used to calculate the inductance and flux linkage values of PMSG at different temperatures; Finally, using the least squares method for data fitting of inductance and flux linkage, the expression of PMSG inductance and flux linkage functions under rated operating conditions in the wind power engineering field are obtained. Compared with the frozen permeability method and finite element method, the perturbation characteristics of permanent magnet synchronous wind turbines obtained by this method are more effective and accurate.

Key words

wind turbines / losses / temperature / multi-field coupling / inherent parameter / finite element

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Li Jie, Wu Shuoyang, Liu Weibin, Zhou Anyue. INDUCTANCE AND FLUX LINKAGE PERTURBATION ANALYSIS OF PERMANENT MAGNET SYNCHRONOUS WIND TURBINE UNDER BIDIRECTIONAL COUPLING OF ELECTROMAGNETIC-TEMPERATURE-FLUID FIELD[J]. Acta Energiae Solaris Sinica. 2025, 46(4): 469-476 https://doi.org/10.19912/j.0254-0096.tynxb.2023-2091

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