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The Influence of Stator Winding Turns on the Steady-State Performances of Line-Start Permanent Magnet Synchronous Motors

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  • Hongbo Qiu

    (Zhengzhou University of Light Industry, School of Electrical and Information Engineering, Zhengzhou 450000, Henan, China)

  • Yong Zhang

    (Zhengzhou University of Light Industry, School of Electrical and Information Engineering, Zhengzhou 450000, Henan, China)

  • Kaiqiang Hu

    (Zhengzhou University of Light Industry, School of Electrical and Information Engineering, Zhengzhou 450000, Henan, China)

  • Cunxiang Yang

    (Zhengzhou University of Light Industry, School of Electrical and Information Engineering, Zhengzhou 450000, Henan, China)

  • Ran Yi

    (Zhengzhou University of Light Industry, School of Electrical and Information Engineering, Zhengzhou 450000, Henan, China)

Abstract

The variation of stator winding turns will directly affect the key parameters of a motor, such as winding resistance and winding reactance, which further affect the steady-state performance of the motor. In order to get excellent steady-state performance from line-start permanent magnet synchronous motors (LSPMSMs) under different load powers, taking an 11 kW LSPMSM as an example, the finite element method (FEM), combined with the steady-state phasor diagram and torque angle characteristic, are used in this paper for the optimal design of the stator winding turns of the prototype. The correctness of the model is verified by comparing the experimental data with the calculated data. First, the influences of different stator winding turns on the no-load, back-induced electromotive force (EMF), as well as on inductance and overload ability are studied, and the variation mechanism is obtained. In addition, from the perspective of the torque angle characteristic, the influence of the change in synchronous inductance caused by the number of turns on the steady-state power angle is studied. Second, the variation of the current and power factors with turn number is obtained by studying the steady-state power angle and end voltage. Based on the coupling relationship between the no-load back EMF and the power angle, the mechanism of non-linear variation of current and power factor is revealed. Finally, the variation of the number of turns on the core loss and eddy current loss is analyzed under various operating conditions, and the variation mechanism is revealed, based on the armature reaction theory.

Suggested Citation

  • Hongbo Qiu & Yong Zhang & Kaiqiang Hu & Cunxiang Yang & Ran Yi, 2019. "The Influence of Stator Winding Turns on the Steady-State Performances of Line-Start Permanent Magnet Synchronous Motors," Energies, MDPI, vol. 12(12), pages 1-15, June.
    • Handle: RePEc:gam:jeners:v:12:y:2019:i:12:p:2363-:d:241362
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    References listed on IDEAS

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    1. Bart Wymeersch & Frederik De Belie & Claus B. Rasmussen & Lieven Vandevelde, 2018. "Classification Method to Define Synchronization Capability Limits of Line-Start Permanent-Magnet Motor Using Mesh-Based Magnetic Equivalent Circuit Computation Results," Energies, MDPI, vol. 11(4), pages 1-22, April.
    2. Hassanpour Isfahani, Arash & Vaez-Zadeh, Sadegh, 2009. "Line start permanent magnet synchronous motors: Challenges and opportunities," Energy, Elsevier, vol. 34(11), pages 1755-1763.
    3. Simon Krüner & Christoph M. Hackl, 2019. "Experimental Identification of the Optimal Current Vectors for a Permanent-Magnet Synchronous Machine in Wave Energy Converters," Energies, MDPI, vol. 12(5), pages 1-18, March.
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