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

Liu, Yuxi; Li, Liyi; Cao, Jiwei; Gao, Qing; Sun, Zhiyin; Zhang, Chengming

doi:10.3390/en11123272

Cited by 5 publications

(5 citation statements)

References 41 publications

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“…It has a low numerical cost, and it is generally easy to implement but less accurate than other modelling techniques. The author of [20] shows a direct analytical model using an equivalent magnetic network where magnetic non linearities are considered paired with a mathematical model analysis (MMA) optimization algorithm. The authors concluded that there is consistency between both methods with a maximum error of 5% for torque results and up to 14.5% for results in the winding temperature model.…”

Section: Implantation and Modelling Overviewmentioning

confidence: 99%

Magnetic FEA Direct Optimization of High-Power Density, Halbach Array Permanent Magnet Electric Motors

et al. 2021

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Hybrid electric aero-propulsion requires high power-density electric motors. The use of a constrained optimization method with the finite element analysis (FEA) is the best way to design these motors and to find the best solutions which maximize the power density. This makes it possible to take into account all the details of the geometry as well as the non-linear characteristics of magnetic materials, the conductive material and the current control strategy. Simulations were performed with a time stepping magnetodynamic solver while taking account the rotor movement and the stator winding was connected by an external electrical circuit. This study describes the magnetic FEA direct optimization approach for the design of Halbach array permanent magnet synchronous motors (PMSMs) and its advantages. An acceptable compromise between precision and computation time to estimate the electromagnetic torque, iron losses and eddy current losses was found. The finite element simulation was paired with analytical models to compute stress on the retaining sleeve, aerodynamic losses, and copper losses. This type of design procedure can be used to find the best machine configurations and establish design rules based on the specifications and materials selected. As an example, optimization results of PM motors minimizing total losses for a 150-kW application are presented for given speeds in the 2000 rpm to 50,000 rpm range. We compare different numbers of poles and power density between 5 kW/kg and 30 kW/kg. The choice of the number of poles is discussed in the function of the motor nominal speed and targeted power density as well as the compromise between iron losses and copper losses. In addition, the interest of having the current-control strategy as an optimization variable to generate a small amount of flux weakening is clearly shown.

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Section: Implantation and Modelling Overviewmentioning

confidence: 99%

Magnetic FEA Direct Optimization of High-Power Density, Halbach Array Permanent Magnet Electric Motors

et al. 2021

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“…When analyzing the characteristics of IPMSM, the flux saturation of core and leakage flux that varies non linearly as applied load changes should be considered. Therefore, a more accurate analysis requires a finer mesh grid in the rotor bridge ribs and stator teeth areas where magnetic saturation is severe when a current is applied [17][18][19].…”

Section: Step 2 Selection Of Motor Typementioning

confidence: 99%

Analysis and Design of a High-Performance Traction Motor for Heavy-Duty Vehicles

Lee

2020

Energies

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Due to environmental issues and depletion of resources, global attentiveness in electric vehicles (EVs) is growing. In particular, research on high specification motors for driving large EVs has attracted a lot of attention. In this study, an analysis and design process for a motor that can be universally applied in heavy vehicles to reduce environmental pollution was introduced. Motors for driving heavy vehicles require high specifications. Thus, an interior permanent magnet synchronous motor (IPMSM) with a delta-shaped magnet array was used to improve the torque and power characteristics. A step skew rotor structure was also used to dampen vibration and noise by minimizing the high-order harmonics in the cogging torque. The proposed analysis and design approach also reduces the total harmonic distortion (THD) of the back electromotive force (EMF). The effectiveness of the proposed analysis and design process and the usefulness of the resulting high-performance traction motor for heavy-duty vehicles were verified via the finite element method (FEM) and by experiment.

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“…The performance analysis and design optimization of high-speed motors has been a continuous research hotspot in recent years, which has attracted the attention of many scholars and engineers. Motor performance can not only be optimized from the overall system level [13,14], but also focus on a specific performance [15,16]. In the literature [17], different from the general optimization at the component level, the robustness of the motor is optimized based on the six-sigma method considering manufacturing quality.…”

Section: Introductionmentioning

confidence: 99%

Multi-Physical Field Analysis and Optimization Design of the High-Speed Motor of an Air Compressor for Hydrogen Oxygen Fuel Cells

Ren,

Feng,

Liu

et al. 2024

Energies

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The hydrogen oxygen fuel cell is a power source with significant potential for development. The air compressor provides ample oxygen for the fuel cell, and as a key component of the air compressor, the performance of the motor greatly impacts the efficiency of the fuel cell. In order to enhance the system performance of high-speed permanent magnet motors, optimization was conducted on the motor’s geometric dimensions to minimize rotor loss and maximize power density, taking into account the comprehensive constraints of electromagnetic and mechanical properties. The finite-element method was employed to analyze the motor’s performance, conducting a multi-physical field analysis that included electromagnetic field, rotor loss, and mechanical strength analysis, as well as temperature field analysis. Aiming at the problem of high temperature rise in high-speed motor winding, the influence of the cooling water flow rate on the winding temperature rise was analyzed and simulated. Based on the analysis results, the minimum cooling water flow rate was obtained. According to the optimized design results, a prototype of an 18 kW, 100,000 rpm motor was manufactured, and the efficiency and temperature rise were tested. The experimental results verify the correctness and effectiveness of the optimal design.

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

Cited by 5 publications

References 41 publications

Magnetic FEA Direct Optimization of High-Power Density, Halbach Array Permanent Magnet Electric Motors

Magnetic FEA Direct Optimization of High-Power Density, Halbach Array Permanent Magnet Electric Motors

Analysis and Design of a High-Performance Traction Motor for Heavy-Duty Vehicles

Multi-Physical Field Analysis and Optimization Design of the High-Speed Motor of an Air Compressor for Hydrogen Oxygen Fuel Cells

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