Harmonic Order Analysis of Cogging Torque for Interior Permanent Magnet Synchronous Motor Considering Manufacturing Disturbances

Lee, Chung-Seong; Kim, Hae-Joong

doi:10.3390/en15072428

Cited by 5 publications

(10 citation statements)

References 25 publications

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“…When designing a motor, the rotor type will change depending on the purpose for which it is being designed. To decide about the rotor type, you must first understand the concept of torque [7].…”

Section: Features Of Concentrated Winding V-ipmsm For High Speedmentioning

confidence: 99%

“…For high-speed operation, the total magnetic flux is weakened by adjusting the current phase angle to achieve highspeed rotation. Such control by adjusting the current phase angle is called weak flux control, and the IPMSM is capable of this weak flux control, which is advantageous for high-speed operation [7][8][9].…”

Section: Features Of Concentrated Winding V-ipmsm For High Speedmentioning

confidence: 99%

“…Equation ( 6) is the equation for the current limit. Equation (7) shows the M point , the center of the voltage limit circle. To increase the speed of the motor, the design must place the M point within the current-limiting circle.…”

Section: Features Of Concentrated Winding V-ipmsm For High Speedmentioning

confidence: 99%

“…To minimize torque ripple, which is the primary objective in separated taperin it is essential to find an optimal value that reduces torque ripple due to tapering lengt Before determining this optimum value, certain factors need to be considered. The follow ing are some of the considerations considered prior to selection [2,3,5,7,8]. Figure 11 shows the relationship between torque ripple parameters and side tapering length.…”

Section: Data Analysis With Tapering Parametersmentioning

confidence: 99%

“…Before determining this optimum value, certain factors need to be considered. The following are some of the considerations considered prior to selection [2,3,5,7,8]. Figure 11 shows the relationship between torque ripple parameters and side tapering length.…”

Section: Data Analysis With Tapering Parametersmentioning

confidence: 99%

See 4 more Smart Citations

High-Speed Design with Separated Tapering for Reducing Cogging Torque and Torque Ripple of a 3 kW Dry Vacuum Pump Motor for the ETCH Process

Choi,

Yang,

Hong

et al. 2023

Machines

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This paper proposes a design method to reduce cogging torque and torque ripple in the concentrated winding of IPMSMs (Interior Permanent Magnet Synchronous Motors) used in motors for the semiconductor ETCH process. IPMSMs can utilize reluctance torque through the difference in inductance between the d axis and q axis, but they are at a disadvantage in terms of reducing cogging torque while tapering the rotor and stator to reduce torque ripple. In addition, the existing single tapering can push the permanent magnets into the rotor. If the rotor’s permanent magnets are embedded, the magnetic reluctance will increase, and the overall performance of the motor will decrease. However, an optimum design method was derived in which the magnets do not move during rotor tapering. This geometric design is an optimum design method that reduces cogging torque and torque ripple. This paper compares and analyzes four models, the concentrated winding model, distributed winding model, conventional tapering model, and separated tapering model, using 2D and 3D finite element analysis (FEA).

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Section: Features Of Concentrated Winding V-ipmsm For High Speedmentioning

confidence: 99%

Section: Features Of Concentrated Winding V-ipmsm For High Speedmentioning

confidence: 99%

Section: Features Of Concentrated Winding V-ipmsm For High Speedmentioning

confidence: 99%

Section: Data Analysis With Tapering Parametersmentioning

confidence: 99%

Section: Data Analysis With Tapering Parametersmentioning

confidence: 99%

See 3 more Smart Citations

High-Speed Design with Separated Tapering for Reducing Cogging Torque and Torque Ripple of a 3 kW Dry Vacuum Pump Motor for the ETCH Process

Choi,

Yang,

Hong

et al. 2023

Machines

View full text Add to dashboard Cite

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Finite-time robust speed control of synchronous reluctance motor using disturbance rejection sliding mode control with advanced reaching law

Nasim,

Bhatti,

Farhan

et al. 2023

PLoS ONE

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In recent years, there has been a significant focus on synchronous reluctance motors (SynRM) owing to their impressive efficiency and absence of magnetic material. Although the SynRM shows great potential for use in electric vehicles, its widespread adoption is limited by unmodeled dynamics and external disturbances. Moreover, the uncertainty factor significantly restricts SynRM’s peak efficiency and superior control performance, leading to an unjustifiable current loop reference command. To address these issues, this work presents various new research contributions which focus on the robust control of SynRM to optimize performance through the novel reaching law-based sliding mode control. Initially, a novel advanced sliding mode control reaching law (ASMCRL) with adaptive gain is proposed, to enhance the acceleration of the system state reaching the sliding surface. After that, an extended state observer (ESO) is designed to estimate and compensate for the overall disturbances of the system. Finally, the ASMCRL and ESO are integrated to design two nonlinear controllers namely, the disturbance-rejection sliding mode controller (DRSMC) and the disturbance-rejection sliding mode speed regulator (DRSMSR) for SynRM. The proposed DRSMSR eliminates the steady-state error and eradicates inherent chattering in DRSMC. Moreover, this yields a system trajectory that converges to a predetermined proximity of the sliding surface, irrespective of any lumped disturbances. The steady-state error of DRSMSR is less as compared to DRSMC. Furthermore, the speed response of this technique is 22.62% faster as compared to the state-of-the-art finite-time adaptive terminal sliding mode control. Additionally, the asymptotic stability of the proposed system is validated using Lyapunov’s theorem. Thus the experimental results demonstrate the effectiveness and robustness of the proposed approach.

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Adaptive Online Extraction Method of Slot Harmonics for Multiphase Induction Motor

2022

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The accurate extraction and analysis of slot harmonics caused by slotting in an induction motor are important for the motor’s performance evaluation and state monitoring. However, the frequency distribution of rotor slot harmonics (RSHs) varies along with the operating states of the motor, such as motor speed and slip ratio, and the voltage and current signals of the motor only contain small-amplitude RSHs compared with other harmonics; both make it difficult to extract and analyze the RSHs accurately online. While offline extraction and filters with constant parameters are mainly utilized in available works, a novel adaptive extraction method for RSHs in a multiphase induction motor is proposed here to realize online RSH extraction under different speed and load conditions. In this paper, the RSHs in the multiphase induction motors are firstly modeled by using the magnetic potential permeability method, and the influence of a skewed rotor on RSHs is analyzed through a multisection method. Then, an adaptive extraction method of RSHs is proposed, which can effectively realize the online processing of RSHs of stator current. Finally, the experimental platform of a nine-phase induction motor has been used to verify the effectiveness of the proposed method under different speeds and load conditions, with a relative error of less than 1% in identifying the RSH frequency distribution.

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Harmonic Order Analysis of Cogging Torque for Interior Permanent Magnet Synchronous Motor Considering Manufacturing Disturbances

Cited by 5 publications

References 25 publications

High-Speed Design with Separated Tapering for Reducing Cogging Torque and Torque Ripple of a 3 kW Dry Vacuum Pump Motor for the ETCH Process

High-Speed Design with Separated Tapering for Reducing Cogging Torque and Torque Ripple of a 3 kW Dry Vacuum Pump Motor for the ETCH Process

Finite-time robust speed control of synchronous reluctance motor using disturbance rejection sliding mode control with advanced reaching law

Adaptive Online Extraction Method of Slot Harmonics for Multiphase Induction Motor

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