Optimal Design of PMa-synRM for an Electric Propulsion System Considering Wide Operation Range and Demagnetization

Park, Gyeong-Jae; Kim, Jin-Seok; Son, Byungkwan; Jung, Sang-Yong

doi:10.1109/tasc.2018.2807375

Cited by 20 publications

(12 citation statements)

References 10 publications

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“…Mathematical modeling of the stator and rotor is required to calculate the magnetoresistance of each element for designing the magnetic equivalent circuit of the motor. The SynRM uses the reluctance torque generated by the d-q-axi inductance difference of the rotor, expressed in (1), so the rotor is composed of numerous design variables [7], [9], [10]. Therefore, among the stator and rotor of the motor, this study focuses on the mathematical modeling method of the SynRM rotor, which has a more complex shape than other motors.…”

Section: Design Of Synchronous Reluctance Motor Based On the Nonlinea...mentioning

confidence: 99%

A Study on Design Method of Synchronous Reluctance Motor Based on Nonlinear MEC Using Newton-Raphson Method

Jung

Lee

2023

IEEE Access

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Recently, policies for carbon reduction are being implemented worldwide to solve environmental and energy consumption problems. Minimum Energy Performance Standard (MEPS) is a carbon reduction policy for reducing energy consumption by regulating the efficiency of industrial induction motors. The induction motors have a low manufacturing cost and a simple structure, and it can be operated without control and have great advantages in maintenance so it is applied in various industrial fields. However, compared with other types of motors, there is a limit to improving the efficiency due to the additional loss generated in the cage of rotor. Synchronous reluctance motors (SynRMs) are attracting the most attention as an alternative to an induction motor since they are composed of only a copper winding and a core, manufacturing cost and durability are excellent Moreover, unlike induction motors, there is no secondary loss; therefore, it is evaluated as a high-efficiency industrial motor corresponding to MEPS. However, because of their complex rotor shape composed of multiple barriers and segments, SynRMs are typically designed using finite-element analysis, requiring a significant amount of time and trial and error. In this paper, a basic design method for a synchronous reluctance motor based on a nonlinear magnetic equivalent circuit using the Newton-Rapson method is presented. Finally, the design method of the synchronous reluctance motor is validated through performance tests using a prototype.INDEX TERMS Minimum energy performance standard (MEPS), nonlinear magnetic equivalent circuit (MEC), Newton-Raphson method, synchronous reluctance motor (SynRM).

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Section: Design Of Synchronous Reluctance Motor Based On the Nonlinea...mentioning

confidence: 99%

A Study on Design Method of Synchronous Reluctance Motor Based on Nonlinear MEC Using Newton-Raphson Method

Jung

Lee

2023

IEEE Access

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“…Note, for clearness of illustration, only one layer of flux barrier is drawn in Figure 1, but of course there are more layers in practical SynRMs. The rotor flux barriers can also be symmetric about the d-axis but asymmetric about the q-axis [12][13][14][15], as illustrated in Figure 1(c) and called Structure III, or, asymmetric about both d-axis and q-axis but still symmetric about the rotor centre [14][15][16], as illustrated in Figure 1(d) and called Structure IV. All these three typical asymmetric rotor topologies, which maintain the rotational symmetry and mechanical balance, are beneficial to suppress the torque ripple [16,17] and consequently the tangential vibration.…”

Section: Introductionmentioning

confidence: 99%

Radial electromagnetic force and vibration in synchronous reluctance motors with asymmetric rotor structures

Lin

Sun

Wang

et al. 2021

IET Electric Power Appl

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Asymmetrical rotor topologies were previously proposed for synchronous reluctance motors (SynRM) to reduce the torque ripple. However, potential negative effect of these topologies on mechanical vibration, which is often serious in SynRM, was hardly studied and such an effect is investigated here. An analytical model is established, through which the spatial orders of the radial electromagnetic force with various rotor topologies are derived, and the relationship of the peak frequencies and the corresponding spatial orders in the radial electromagnetic force is revealed. It is shown that some asymmetric rotor topologies will reduce the order of the lowest spatial harmonic for the radial electromagnetic force, and consequently increase the vibration. Finite element analysis and experiments demonstrate the same results. Finally, a specific rotor topology with asymmetry about both d-axis and q-axis is recommended, which can reduce the torque ripple, but would not deteriorate the radial electromagnetic force and vibration.This is an open access article under the terms of the Creative Commons Attribution-NonCommercial-NoDerivs License, which permits use and distribution in any medium, provided the original work is properly cited, the use is non-commercial and no modifications or adaptations are made.

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“…As a result, to cope with these important issues, a new permanent magnet-assisted (PMa) synchronous reluctance motor (SynRM) has been conceived to reduce the size of PMs and to increase the use of ferrite magnet materials in the rotor part. Besides, the modern PMa-SynRM is more advantageous than the classic SynRM [6][7][8]. Its cost is reduced compared to the usual PMSM since ferrite magnets are cost-effective over rare-earth PMs.…”

Section: Introductionmentioning

confidence: 99%

Design, Modeling, and Differential Flatness Based Control of Permanent Magnet-Assisted Synchronous Reluctance Motor for e-Vehicle Applications

et al. 2021

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This paper presents the utilization of differential flatness techniques from nonlinear control theory to permanent magnet assisted (PMa) synchronous reluctance motor (SynRM). The significant advantage of the proposed control approach is the potentiality to establish the behavior of the state variable system during the steady-state and transients operations as well. The mathematical models of PMa-SynRM are initially proved by the nonlinear case to show the flatness property. Then, the intelligent proportional-integral (iPI) is utilized as a control law to deal with some inevitable modeling errors and uncertainties for the torque and speed of the motor. Finally, a MicroLab Box dSPACE has been employed to implement the proposed control scheme. A small-scale test bench 1-KW relying on the PMa-SynRM has been designed and developed in the laboratory to approve the proposed control algorithm. The experimental results reflect that the proposed control effectively performs high performance during dynamic operating conditions for the inner torque loop control and outer speed loop control of the motor drive compared to the traditional PI control.

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Optimal Design of PMa-synRM for an Electric Propulsion System Considering Wide Operation Range and Demagnetization

Cited by 20 publications

References 10 publications

A Study on Design Method of Synchronous Reluctance Motor Based on Nonlinear MEC Using Newton-Raphson Method

A Study on Design Method of Synchronous Reluctance Motor Based on Nonlinear MEC Using Newton-Raphson Method

Radial electromagnetic force and vibration in synchronous reluctance motors with asymmetric rotor structures

Design, Modeling, and Differential Flatness Based Control of Permanent Magnet-Assisted Synchronous Reluctance Motor for e-Vehicle Applications

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