The Optimization Design of Short-Term High-Overload Permanent Magnet Motors Considering the Nonlinear Saturation

Electric actuators with fast dynamic response and high torque density are widely used in aerospace and industrial applications. In this paper, the design and optimization of a short-term high-overload permanent magnet synchronous motor (STHO-PMSM) is presented. The rated working point is optimized a...

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Bibliographic Details
Published in:Energies (Basel) 2018-12, Vol.11 (12), p.3272
Main Authors: Liu, Yu-Xi, Li, Li-Yi, Cao, Ji-Wei, Gao, Qin-He, Sun, Zhi-Yin, Zhang, Jiang-Peng
Format: Article
Language:English
Subjects:
Design
Design optimization
Economic impact
Electrical loads
electromagnetic load
extreme torque
mathematical model analysis
Mathematical models
Permanent magnets
Product design
reliability
Saturation
Short term
short-term high-overload permanent magnet motor
Stators
the nonlinear magnetic saturation
Torque
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Summary:Electric actuators with fast dynamic response and high torque density are widely used in aerospace and industrial applications. In this paper, the design and optimization of a short-term high-overload permanent magnet synchronous motor (STHO-PMSM) is presented. The rated working point is optimized according to the operating conditions of the motor. The effect of electromagnetic load on the extreme torque which mainly include ampoule number and the magnetic energy of the PM is researched. Due to the nonlinear saturation influence, the equivalent magnetic network model is established. The saturation torque discount factor is proposed to quantify the degree of the core magnetic saturation. Winding temperature model is presented to inspect the motor reliability. To verify the feasibility and accuracy of mathematical model analysis (MMA), the performance of the motor in different currents is investigated compared to the finite element analysis (FEA). A prototype motor is manufactured and tested. The results of the MMA, FEA, and experiment show that the designed motor can achieve the high performance with the 10 times overload in a short time. The method of the MMA can relatively accurately predict as well as take less time consumption.
ISSN:1996-1073
1996-1073
DOI:10.3390/en11123272