Computationally Efficient Design and Optimization Approach of PMa-SynRM in Frequent Operating Torque–Speed Range

López-Torres, Carlos; García, A.; Riba, Jordi-Roger; Lux, G.; Romeral, L.

doi:10.1109/tec.2018.2831249

Cited by 31 publications

(15 citation statements)

References 21 publications

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“…Some improvements were done in posterior studies [3], by coupling magneto-static FEA analysis with lumped circuit modelling. In the same way [4], [5] applied a magneto-static analysis approach combined with the application of reluctance networks. Nevertheless, [3]- [5] do not consider the harmonic content of iron losses, thus attaining limited precision at high frequencies.…”

Section: Ldmentioning

confidence: 99%

PMSM Design for Achieving a Target Torque-Speed-Efficiency Map

Candelo-Zuluaga

Espinosa

Riba

et al. 2020

IEEE Trans. Veh. Technol.

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During the last years, the requirements for a fast and reliable design of electrical machines by applying optimization methods using finite element analysis (FEA), has become a subject of study. Due to their capabilities, permanent magnet synchronous machines (PMSMs) have become the preference choice for many applications, including electric vehicles (EVs) propulsion, water-pumping, robotics, or renewable power generation among others. This paper presents a novel methodology for designing and optimizing PMSMs using the torque-speed-efficiency map. The design-optimization algorithm requires as input, the torque-speed-efficiency map of the target motor, to define the required performance for the given application. The objective is to find the motor geometry which better approximates the target torque-speed-efficiency map. The PMSM is evaluated by using magneto-static FEA combined with direct-quadrature (d-q) electrical modeling, thus greatly reducing the computational burden when compared to conventional time-dependent FEA methods. The magneto-static FEA method calculates iron losses taking into account the magnetic flux density harmonic content by applying a time-space conversion approach. The design-optimization process takes into account the control strategy as well as losses separation, which is validated by using the public experimental data of the Toyota Prius and Camry PMSMs. Index Terms-Permanent magnet machines, Design optimization, Design tools, Magnetic losses, Finite element analysis NOMENCLATURE Bxy Magnetic flux density in a defined region [T] dwire Wire diameter [m] Dir Inner rotor diameter [m] Dis Inner stator diameter [m] Dor Outer rotor diameter [m] Dos Outer stator diameter [m] fobj Objective function [-] g Air gap length [m] hbrg Rotor bridge height [m] hPM Permanent magnet height [m] hrib Rotor rib height [m] hso Slot opening height [m] hsy Stator yoke height [m] ht Tooth height [m] Imax Maximum current [ARMS] L Stack lamination length [m]

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Section: Ldmentioning

confidence: 99%

PMSM Design for Achieving a Target Torque-Speed-Efficiency Map

Candelo-Zuluaga

Espinosa

Riba

et al. 2020

IEEE Trans. Veh. Technol.

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“…Therefore, it is necessary to propose a calculation method for temperature with high accuracy in a short time. Of all the thermal analysis methods, the TRN method [19][20][21][22] undoubtedly meets this feature, so this section will analyse how to model an accurate TRN for IPMSM.…”

Section: Trn Model Of Ipmsmmentioning

confidence: 99%

Multi‐physics and multi‐objective optimisation design of interior permanent magnet synchronous motor for electric vehicles

Song

Liu

Zhang

et al. 2020

IET Electric Power Applications

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The electrical machine design method plays a decisive role in electric vehicles (EVs). However, only a few designs consider the coupling of multiple fields simultaneously. This study proposes an improved multi‐physics and multi‐objective optimisation design approach for designing a 75 kW interior permanent‐magnet synchronous machine dedicated to EVs. Five optimal objectives including power density, temperature rise, price, torque ripple, and cogging torque are selected, and the first three objectives are optimised based on the sensitivity analysis of design parameters, where an improved thermal resistance network combining with finite‐element analysis model is developed. Meanwhile, the torque ripple and cogging torque are involved in subsequent design optimisation. The temperature rise and structural strength are recalculated by using commercial finite‐element model software, respectively, for validating the accuracy of optimisation design. Finally, a prototype motor is manufactured; both simulation and experimental results verify the feasibility and validity of the proposed optimisation design method.

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“…Permanent magnet machines have a wide range of use in the electric vehicle and aerospace industries all around the world providing the exceptional performances such as high reliability, high-power density, and high efficiency [1][2][3][4]. Axial flux permanent magnet (AFPM) machines are installed for various applications because of their benefits [5][6][7][8][9].…”

Section: Introductionmentioning

confidence: 99%

Reduction of Torque Ripples in Multi-Stack Slotless Axial Flux Machine by Using Right Angled Trapezoidal Permanent Magnet

et al. 2021

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The aim of this paper is to design, analyze and optimize the "Multi-Stack Slotless Axial Flux Switching Permanent Magnet Machine". In the design process, mathematical models are implemented, and the Finite Element Method (FEM) is performed to analyze the machine performances. The paper aims to minimize the occurrence of cogging torque and torque ripple in the multi-stack slotless stator AFPM machine. As a consequence, it reduces the vibrations in the machine and increases its life span. Multi-stack slotless stator AFPM machine with a right-angled trapezoid-shaped PM is proposed and comparison is done with conventional shape AFPM machine. In order to examine the performance of multi-stack slotless stator AFPM machine Finite Element Analysis (FEA) is used. To further enhance the characteristics of the designed machine with the proposed right-angled PM shape, optimization is done by considering inner and outer pole pitch as the design variables. In optimization process, krigging method assigned with Latin Hyper-cube Sampling and a genetic algorithm (GA) is performed due to suitability with non-linear data. Then, finite element analysis by JMAG-Designer is performed to verify the results. It is determined that optimized model has achieved 65% reduction in torque ripples as compared with the conventional design. Hence, this work attempts to optimize the performance of the AFPM machine.INDEX TERMS Axial flux machine, torque ripples, cogging torque, slotless stator, finite element analysis.

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Computationally Efficient Design and Optimization Approach of PMa-SynRM in Frequent Operating Torque–Speed Range

Cited by 31 publications

References 21 publications

PMSM Design for Achieving a Target Torque-Speed-Efficiency Map

PMSM Design for Achieving a Target Torque-Speed-Efficiency Map

Multi‐physics and multi‐objective optimisation design of interior permanent magnet synchronous motor for electric vehicles

Reduction of Torque Ripples in Multi-Stack Slotless Axial Flux Machine by Using Right Angled Trapezoidal Permanent Magnet

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