Design of five‐phase permanent magnet assisted synchronous reluctance motor for low output torque ripple applications

Baek, Jeihoon; Bonthu, Sai Sudheer Reddy; Choi, Seungdeog

doi:10.1049/iet-epa.2015.0267

Cited by 52 publications

(29 citation statements)

References 17 publications

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“…The slot opening width can be calculated using teeth width at tip from (3). Using the slot width at the bottom, the teeth width at the bottom can be calculated from (4). The third geometrical parameter of the slot is calculated from (5).…”

Section: B Optimization Of Stator Dimensionsmentioning

confidence: 99%

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Performance Improvement of Existing Three Phase Synchronous Reluctance Machine: Stator Upgrading to 5-Phase With Combined Star-Pentagon Winding

et al. 2020

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This paper investigates the performance of 3-phase synchronous reluctance machines (SynRMs) when upgrading their stator to 5-phase, keeping the same rotor. The design of the 5-phase stator has been optimized to select the optimal dimensions of the slots and teeth. Moreover, a combined starpentagon winding is employed to further improve the machine performance. Different winding configurations have been studied and compared using 2D Ansys Maxwell transient simulations. It is observed that at optimal current angle and rated current, the average torque is increased by 17.41% when changing the 3-phase stator with the proposed 5-phase one. In addition, the efficiency of the 5-phase SynRM is increased by about 0.8% compared to 3-phase SynRM. At 3 times the rated speed, the torque and efficiency are significantly increased by around 33% and 3.5% respectively. Moreover, the 5-phase SynRM shows a superior performance in the faulty case with one phase opened. It works at 98.84% of the rated torque of the healthy 3-phase machine, whereas the 3-phase machine works at only 43.35% with huge torque ripple (228%). Finally, an experimental validation using the reference 3-phase machine has been done.

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Section: B Optimization Of Stator Dimensionsmentioning

confidence: 99%

“…Hence, the efficiency and the cost of SynRMs are promising compared to other electric machines. Therefore, SynRMs have been receiving a great interest to be employed in high power industrial fields [4].…”

Section: Introductionmentioning

confidence: 99%

Performance Improvement of Existing Three Phase Synchronous Reluctance Machine: Stator Upgrading to 5-Phase With Combined Star-Pentagon Winding

et al. 2020

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“…As can be seen, the two types of motors have a difference in PM flux linkages. The phasor diagrams for Type 1 [9] and Type 2 are illustrated in Figures 3a and b, respectively, with the winding resistance being neglected [9,29]. Therefore, the voltage equations can be further expressed as: Equations 1and 2are general voltage equations for synchronous machines.…”

Section: Mathematical Modeling Of Investigated Motorsmentioning

confidence: 99%

Performance Analysis of Synchronous Reluctance Motor with Limited Amount of Permanent Magnet

Ngo

Hsieh

2019

Energies

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This paper analyzes the performance of a synchronous reluctance motor (SynRM) equipped with a limited amount of a permanent magnet (PM). This is conventionally implemented by inserting PMs in rotor flux barriers, and this is often called the PM-assisted SynRM (PMa-SynRM). However, common PMa-SynRMs could be vulnerable to irreversible demagnetization. Therefore, motor performance and PM demagnetization should be simultaneously considered, and this would require the PM to be properly arranged. In this paper, various rotor configurations are carefully studied and compared in order to maximize the motor performance, avoid irreversible demagnetization and achieve higher PM utilization. Moreover, the field weakening capability is investigated and improved by regulating armature excitation. A particular rotor type with flux intensification was found to possess higher PM utilization, lower demagnetization possibility with fairly high performance. Thus, suitable rotor configurations are recommended for certain applications.

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“…With the increase in the value of d, the excitation magnetic potential as well as the volume of the portion in the electrical excitation increases. [18][19][20]…”

Section: Stator Sizementioning

confidence: 99%

Nd-Fe-B permanent magnet generator and voltage stabilizing control technology for vehicles

Zhang

et al. 2016

Advances in Mechanical Engineering

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In this study, the tangential magnetic field Nd-Fe-B permanent magnet generator is designed and analyzed. In the generator, the adjacent permanent steel is sequentially arranged on the radial groove by the way of same polarity-oriented manner. The optimal design parameters of the generator are obtained by analyzing the influence rule of the generator leakage magnetic flux and leakage coefficient which is affected by the change in rotor pole pairs, permanent steel thickness, magnetic isolation air width, and air-gap length. The mathematical model of the magnetic field is developed and analyzed using the finite element method. Using the finite element method model, the diagrams of magnetic force line distribution, magnetic flux density modulus value, and magnetic flux density vector are obtained, which can be used to verify the validity of the main design parameters. A three-phase half-wave impulse-type controlled rectifier voltage regulator is developed with the function of regulator and rectifier, which proposes a solution to the output voltage instability of the Nd-Fe-B permanent magnet generator in a wide speed and load range.

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Design of five‐phase permanent magnet assisted synchronous reluctance motor for low output torque ripple applications

Cited by 52 publications

References 17 publications

Performance Improvement of Existing Three Phase Synchronous Reluctance Machine: Stator Upgrading to 5-Phase With Combined Star-Pentagon Winding

Performance Improvement of Existing Three Phase Synchronous Reluctance Machine: Stator Upgrading to 5-Phase With Combined Star-Pentagon Winding

Performance Analysis of Synchronous Reluctance Motor with Limited Amount of Permanent Magnet

Nd-Fe-B permanent magnet generator and voltage stabilizing control technology for vehicles

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