A Novel Rotor Configuration and Experimental Verification of Interior PM Synchronous Motor for High-Speed Applications

Kim, Sŭng-il; Kim, Young-Kyoun; Lee, Geun-Ho; Hong, Jung-Pyo

doi:10.1109/tmag.2011.2174045

Cited by 88 publications

(31 citation statements)

References 5 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Moreover, the output performance of the IPMSM is also greatly affected by the configuration and position of magnets and flux barriers in the rotor core and the number of magnet layers [19,28]. Therefore, in this paper, an experimental design based on finite element analysis (FEA) is executed for the more effective rotor design [29,30]. In particular, in [30], the analysis results for optimizing the rotor shape were presented in detail.…”

Section: Rotor Design and Fabricationmentioning

confidence: 99%

“…Therefore, in this paper, an experimental design based on finite element analysis (FEA) is executed for the more effective rotor design [29,30]. In particular, in [30], the analysis results for optimizing the rotor shape were presented in detail. Figure 3 shows the safety factor of final rotor configuration is 1.4 at 40,000 rpm (electrical steel yield stress: 305 MPa).…”

Section: Rotor Design and Fabricationmentioning

confidence: 99%

See 1 more Smart Citation

Design and Evaluation of a Multi-layer Interior PM Synchronous Motor for High-Speed Drive Applications

Kim¹,

Hong²

2016

Journal of Magnetics

Self Cite

View full text Add to dashboard Cite

In general, surface mounted PM synchronous motors (SPMSMs) are mainly adopted as a driving motor for high-speed applications, because they have high efficiency and high power density. However, the SPMSMs have some weak points such as the increase of magnetic reluctance and additional losses as a consequence of using a non-magnetic sleeve. Especially, the magneto-motive force (MMF) in the air-gap of the SPMSMs is weakened due to the magnetically increased resistance. For that reason, a large amount of PM is consumed to meet the required MMF. Nevertheless, it cannot help using the sleeve in order to maintain the mechanical integrity of a rotor assembly in high-speed rotation. Thus, in this paper, a multi-layer interior PM synchronous motor (IPMSM) not using the sleeve is presented and designed as an alternative of a SPMSM. Both motors are evaluated by test results based on a variety of characteristics required for an air blower system of a fuel cell electric vehicle.

show abstract

Section: Rotor Design and Fabricationmentioning

confidence: 99%

Section: Rotor Design and Fabricationmentioning

confidence: 99%

Design and Evaluation of a Multi-layer Interior PM Synchronous Motor for High-Speed Drive Applications

Kim¹,

Hong²

2016

Journal of Magnetics

Self Cite

View full text Add to dashboard Cite

show abstract

“…The special rotor structure of HSPMSM makes the rotor eddy current losses analysis and rotor structure optimization more important. An analytic model of the PMs established for analyzing the eddy current losses in PMs of PMSMs was researched in [16][17][18]. Not only was the analytic model of the eddy current losses built, but also the influence of the axial segmentation on eddy current losses was considered in [19].…”

Section: Introductionmentioning

confidence: 99%

Optimal Design of the Rotor Structure of a HSPMSM Based on Analytic Calculation of Eddy Current Losses

Liang

Liu

2017

Energies

View full text Add to dashboard Cite

Abstract:The rotor eddy current losses of a high-speed permanent magnet synchronous motor reduce the efficiency of the motor and increase the temperature rise of the rotor. In severe cases, the permanent magnet of the rotor can be demagnetized, affecting the safe operation of the motor. In this paper, an analytical model of rotor eddy current losses calculation based on Maxwell equations is introduced. The eddy current losses of rotor structures, e.g., protection sleeve, shield layer and permanent magnets, are analyzed. The calculation results of rotor eddy current losses are compared with two-dimensional (2D) finite element analysis. The comparison verifies the accuracy and versatility of analytical calculation. Finally, the influences of the variables on eddy current losses in the derived model are analyzed. Based on the principle of minimizing eddy current losses, an optimized structure with copper layers covering both inner and outer surfaces of the protective sleeve is proposed. Furthermore, the optimized distribution parameter of copper film thickness is obtained.

show abstract

“…This torque is produced by the self-inductance variations of the phase windings as magnetic circuits of direct and quadrature axis are unbalanced. Researches of reducing torque ripple have been carried out for a long time and can be classified into two categories which are the points of view of design and control [1][2][3][4][5][6][7][8][9][10][11][12][13][14][15]. In this paper, a method to reduce torque ripple is suggested by the point of view of motor design.…”

Section: Introductionmentioning

confidence: 99%

“…Conventional methods for the reduction of torque ripple such as the pole-arc to pole pitch ratio, slot/pole number combinations, skew [3,4], and rotor shaping [7,8] are studied. Modifying rotor shape can make a sinusoidal flux density distribution in the air gap which results in reduction of the noise and vibration [7,8] and stator iron loss, and also improve efficiency. The most important point is that torque ripple can be reduced by modifying the rotor shape, but an average torque can be also decreased.…”

Section: Introductionmentioning

confidence: 99%

An Asymmetric Rotor Design of Interior Permanent Magnet Synchronous Motor for Improving Torque Performance

Kim¹,

Kim²,

Hong³

2015

Journal of Magnetics

Self Cite

View full text Add to dashboard Cite

Torque ripple is necessarily generated in interior permanent magnet synchronous motors (IPMSMs) due to the non-sinusoidal distribution of flux density in the air gap and the magnetic reluctance by stator slots. This paper deals with an asymmetric rotor shape to reduce torque ripple which can make sinusoidal flux density distribution in the air gap. Meanwhile the average torque is relatively increased by the asymmetric rotor. Response surface method (RSM) is applied to find the optimum position of the permanent magnets for the IMPSM with improved torque performance. Consequently, an asymmetric structure is the result of RSM and the structure has disadvantage of a mechanical stiffness. Finally, the performance of suggested shape is verified by finite element analysis and structural analysis is conducted for the mechanical stiffness.

show abstract

A Novel Rotor Configuration and Experimental Verification of Interior PM Synchronous Motor for High-Speed Applications

Cited by 88 publications

References 5 publications

Design and Evaluation of a Multi-layer Interior PM Synchronous Motor for High-Speed Drive Applications

Design and Evaluation of a Multi-layer Interior PM Synchronous Motor for High-Speed Drive Applications

Optimal Design of the Rotor Structure of a HSPMSM Based on Analytic Calculation of Eddy Current Losses

An Asymmetric Rotor Design of Interior Permanent Magnet Synchronous Motor for Improving Torque Performance

Contact Info

Product

Resources

About