Modeling of permanent magnet synchronous machine including torque ripple effects

Gebregergis, Abraham; Chowdhury, Mazharul; Islam, Mohammad; Sebastian, Tomy

doi:10.1109/ecce.2013.6646967

Cited by 9 publications

(3 citation statements)

References 20 publications

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“…Substituting (17)~ (19) into (16), the harmonic torque model for interior PMSMs can be represented as: …”

Section: Pmsm Torque Ripple Modeling By Considering Magnetic Satumentioning

confidence: 99%

“…Therefore, the torque ripple models developed for SPMSMs are not applicable to the IPMSMs because they neglect the torque ripples in the reluctance torque. Based on the magnetic coenergy model, the torque ripple from the reluctance torque is considered in [11], [19], [20], to extend the torque ripple model for IPMSMs. It is found that the torque ripple model involves the inductance terms that are varying with the load conditions/stator currents due to magnetic saturation [21]- [23].…”

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confidence: 99%

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Torque Ripple Modeling and Minimization for Interior PMSM Considering Magnetic Saturation

Lai

Guo

Mukherjee

et al. 2018

IEEE Trans. Power Electron.

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Torque ripple modelling and minimization for interior permanent magnet synchronous machines (IPMSMs) requires accurate information of the inductances which vary nonlinearly due to magnetic saturation. However, existing approaches fail to consider the magnetic saturation and thus their performance is limited under different load conditions. Therefore, this paper improves the torque ripple model by considering magnetic saturation, and employs this model for optimal current design to improve the performance of torque ripple minimization for IPMSMs under different load conditions. At first, numerical studies are performed to analyze and understand how magnetic saturation affects the torque ripples in IPMSMs. Then, a novel torque ripple model for IPMSMs is developed, in which the inductance term is replaced by exploring the machine electrical model. This improved torque ripple model is computation-efficient and it can provide fast and accurate torque ripple prediction. Based on this model, a genetic algorithm (GA) based optimal stator current design approach is proposed to minimize the torque ripple in IPMSMs. The proposed GA-based approach can adaptively optimize the stator current under different load conditions, which can guarantee the robust performance of torque ripple minimization under different saturation levels. The proposed approach is validated through experimental test on a laboratory IPMSM drive system. Index Terms--Geneticalgorithm, magnetic saturation, optimal stator current design, torque ripple modeling and minimization I. NOMENCLATURE t total Total torque T 0 Average torque t h Harmonic torque t cog Cogging torque t ecc Torque induced by cross-coupling effect L d , L q dq-axis inductances L dq , L qd dq-axis mutual inductances . Her research areas include modelling, control and testing of permanent magnet machines and switched reluctance machines. Guodong Feng (M'15) received the B.S. and Ph.D degrees in Engineering

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“…Substituting (17)~ (19) into (16), the harmonic torque model for interior PMSMs can be represented as: …”

Section: Pmsm Torque Ripple Modeling By Considering Magnetic Satumentioning

confidence: 99%

mentioning

confidence: 99%

Torque Ripple Modeling and Minimization for Interior PMSM Considering Magnetic Saturation

Lai

Guo

Mukherjee

et al. 2018

IEEE Trans. Power Electron.

View full text Add to dashboard Cite

show abstract

“…Reference [7] proposed a maximum current limit for motor designs to reduce the impact of irreversible demagnetization of the interior and surface-type permanent magnets brushless DC motor. Reference [8] proposed a method to quantify the various sources of the torque ripple and modifies the existing DQ-model to enhance the modeling capabilities for both surfacemount and interior PMSMs. In reference [9], the loss and temperature fields of an SPM and an IPM are compared, but the electromagnetic field and motor performance were not studied.…”

Section: Introductionmentioning

confidence: 99%

Influence of different rotor magnetic circuit structure on the performance of permanent magnet synchronous motor

Qiu

Cui

et al. 2017

Archives of Electrical Engineering

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Abstract:In order to compare the performance difference of the permanent magnet synchronous motors (PMSM) with different rotor structure, two kinds of rotor magnetic circuit structure with surface-mounted radial excitation and tangential excitation are designed respectively. By comparing and analyzing the results, the difference of the motor performance was determined. Firstly, based on the finite element method (FEM), the motor electromagnetic field performance was studied, and the magnetic field distribution of the different magnetic circuit structure was obtained. The influence mechanism of the different magnetic circuit structure on the air gap flux density was obtained by using the Fourier theory. Secondly, the cogging torque, output torque and overload capacity of the PMSM with different rotor structure were studied. The effect mechanism of the different rotor structure on the motor output property difference was obtained. The motor prototype with two kinds of rotor structure was manufactured, and the experimental study was carried out. By comparing the experimental data and simulation data, the correctness of the research is verified. This paper lays a foundation for the research on the performance of the PMSM with different magnetic circuit structure.

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Permanent Magnet Synchronous Motor Speed Control System Based on Adaptive Inverse Control Method

et al. 2019

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The classical feedback control method for the permanent-magnet synchronous motor cannot fulfill the dynamic requirement and anti-interference requirement at the same time. In this paper, an adaptive inverse control method with disturbance elimination is proposed based on the vector control including speed and current loops. It avoids the system instability and the anti-disturbance performance of the system can be enhanced as well. Firstly, the speed loop adopts the adaptive inverse controller possessing a feed forward control structure, and a normalized least-mean square filtering algorithm accelerates the speed error convergence. The inverse model of the approximately linearized system is obtained by modifying the weighting factor online. Secondly, in order to suppress and eliminate the influence of motor parameter perturbation and external disturbance on the control system, an extended state observer is designed to observe and compensate the disturbance of the system. Thus, the dynamic performance and anti-disturbance performance of the system can be improved simultaneously. Finally, the effectiveness of the proposed method is verified by experiment and simulation.

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Modeling of permanent magnet synchronous machine including torque ripple effects

Cited by 9 publications

References 20 publications

Torque Ripple Modeling and Minimization for Interior PMSM Considering Magnetic Saturation

Torque Ripple Modeling and Minimization for Interior PMSM Considering Magnetic Saturation

Influence of different rotor magnetic circuit structure on the performance of permanent magnet synchronous motor

Permanent Magnet Synchronous Motor Speed Control System Based on Adaptive Inverse Control Method

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