The Design and Optimization of an Interior, Permanent Magnet Synchronous Machine Applied in an Electric Traction Vehicle Requiring a Low Torque Ripple

Zhang, Gan; Yu, Wenfei; Wang, Hua; Cao, Ruiwu; Qiu, H.; A, Guo

doi:10.3390/app9173634

Cited by 24 publications

(12 citation statements)

References 26 publications

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“…As the offset value increases, the waveform approaches the sinus. 44 This is clearly seen in Figure 8. The THD value is 7.23% and 2.13% at offset 0 mm, 50 mm, respectively.…”

Section: Analysis Of Pole Arc Offsetmentioning

confidence: 70%

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Cogging torque analysis in permanent magnet synchronous generators using finite elements analysis

Dalcalı

2020

Int Trans Electr Energ Syst

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Background: A number of generator types are used as energy converters in wind turbines. Despite the advantages of PMSG such as high-power density, high efficiency and low speed, the effect of the cogging torque occurring in PMSG must be reduced. Aim: The aim of this study is cogging torque optimization of internal rotor, surface mounted, PMSGs used in wind turbines with high number of slots and poles (84/14). Materials and methods: The performance and cogging torque characteristic of the generator have been studied by the finite element analysis (FEA) method. Results: While the cogging torque value of the initial generator 580 mNm, with changing skew it is optimized to 277.04 mNm, with changing pole arc offset it is tuned to 550 mNm. With a notch on the magnet and teeth it is minimized to 417.25 mNm and 383.9 mNm, respectively. Finally, increasing the ratio of slot opening to slot pitch, undermine the value of cogging torque. Conclusions: The obtained results illustrate that any improvement in cogging torque characteristic using the applied methods accordingly compromises other merits such as flux density, output power, labor and cost.

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“…As the offset value increases, the waveform approaches the sinus. 44 This is clearly seen in Figure 8. The THD value is 7.23% and 2.13% at offset 0 mm, 50 mm, respectively.…”

Section: Analysis Of Pole Arc Offsetmentioning

confidence: 70%

“…As the offset value increases, the waveform approaches the sinus 44 . This is clearly seen in Figure 8.…”

Section: Analysis Of Cogging Torquementioning

confidence: 73%

Cogging torque analysis in permanent magnet synchronous generators using finite elements analysis

Dalcalı

2020

Int Trans Electr Energ Syst

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“…They reported that 3D Topology Optimization results show that the weight of a PMM rotor can be slashed by 50% without affecting its rated torque profile. Zhang et al [11] studied on the rotor iron core topology using finite element analysis (FEA). They considered influences of the iron core on the air-gap magnetic flux density, the back electro-motive-force harmonic, the cogging torque and the torque ripple were investigated.…”

Section: Introductionmentioning

confidence: 99%

Topology Optimization of Rotor Structure in PM Alternator

Perin¹,

Dogru²

2020

Proceedings of the 6th World Congress on Mechanical, Chemical, and Material Engineering

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Determining the rotor design parameters of alternator has great importance to provide the desired efficiency and magnetic flux distribution. In this paper, topology optimization of rotor structure in permanent magnet alternator is studied to provide these goals. For this purpose combinations of different diameter and height values are used to determine the optimum rotor design. Solidworks and Maxwell simulations are used for data collection. The solution of this design problem shows that how the diameter and height values affects the performance of the alternator. As a result, the efficiency of the alternator is improved under the desired magnetic flux conditions.

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“…This phenomenon is also common in rotary machines, where the reduction of cogging torque is investigated to maximize the energy performances [44][45][46]. In this case, geometric parameters are usually investigated, such us the introduction of a skewing angle for the stator slots along the main axis or permanent magnets on the rotor [47], the adoption of particular numbers for the realization of stator and rotor teeth [48], and the optimization of the shape of stator teeth [45].…”

mentioning

confidence: 99%

“…In case of rotary machines, cogging torque is essentially related to the alternance of teeth and slots in the stator, during the rotation of the rotor [44]. In a similar way, the alternance of teeth and slots produces also a cogging force in linear machines [49].…”

mentioning

confidence: 99%

A New Solution for Sea Wave Energy Harvesting, the Proposal of an Ironless Linear Generator

Curto¹,

Viola²,

Franzitta³

et al. 2020

JMSE

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The paper investigates an innovative ironless linear generator, installable inside a wave energy converter, in order to produce electricity from sea waves. This energy source is considered strategic for the future, especially in small islands; however, this technology is still far from the commercial phase. Considering the wave energy potential of the Mediterranean Sea, a first prototype of the electrical linear generator was realized at the Department of Engineering of Palermo University. This machine can be run by a two-floating buoys system, able to produce a linear vertical motion. The main goal of this paper is the investigation of the advantages and the disadvantages of the utilization of steel materials to realize the stator of linear generators. Thus, starting from the prototype, the authors analyzed the effects produced by the replacement of steel in the stator with a non-magnetic material. For comparison, the authors evaluated the amplitude of no-load voltages, using a three-phase connection scheme, and the amplitude of the magnetic force produced by the interaction of magnets with the stator. Both aspects were evaluated through numerical simulations and mathematical models.

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The Design and Optimization of an Interior, Permanent Magnet Synchronous Machine Applied in an Electric Traction Vehicle Requiring a Low Torque Ripple

Cited by 24 publications

References 26 publications

Cogging torque analysis in permanent magnet synchronous generators using finite elements analysis

Cogging torque analysis in permanent magnet synchronous generators using finite elements analysis

Topology Optimization of Rotor Structure in PM Alternator

A New Solution for Sea Wave Energy Harvesting, the Proposal of an Ironless Linear Generator

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