Measurements of Iron Loss in PMSM Stator Cores Based on CoFe and SiFe Lamination Sheets and Stemmed From Different Manufacturing Processes

Boubaker, Nadhem; Matt, D.; Enrici, P.; Nierlich, Florent; Durand, Guillaume

doi:10.1109/tmag.2018.2877995

Cited by 31 publications

(23 citation statements)

References 20 publications

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“…As presented in Section IV-B, a second-order polynomial of magnetic flux density is applied in driving the coefficient K weld . The stator core losses with cutting effect is denoted as P 2 (2) whereas P 3 included the effects of cutting and welding as presented in (6).…”

Section: B Loss Model For Welding Effectsmentioning

confidence: 99%

“…Different analytical expressions based on exponential [3], [4] and polynomial functions [5] are proposed. Based on the modeling and measurements, researchers have found up to 10-28% increase in core losses due to cutting in the studied machines [5], [6].…”

Section: Introductionmentioning

confidence: 96%

“…Such an approach is followed in this paper. Moreover, [6] proposed building factors to included the effect of manufacturing for a permanent magnet synchronous machine. The proposed building factor varies between 1.1 to 1.32 for the studied machine, however no segregation into individual manufacturing processes was provided.…”

Section: Introductionmentioning

confidence: 99%

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Effects of Manufacturing Processes on Core Losses of Electrical Machines

Sundaria

Lehikoinen

Arkkio

et al. 2021

IEEE Trans. Energy Convers.

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Manufacturing processes such as cutting, welding and shrink fitting are known to degrade the magnetic properties of the electrical sheet during the manufacturing of electrical machines. These effects are often neglected at the design stage and lead to large errors in the simulated and measured core losses of the electrical machine. This paper studies the comparative impact of different manufacturing processes on the stator core losses of a typical industrial motor. Both simulations and measurements indicate a significant impact of manufacturing processes on the stator core losses. A dummy blocked rotor test setup is used to measure the stator core losses. As a result of different manufacturing processes, the stator core losses increased by 23% in the studied machine at the rated condition. The effect on the stator core losses was higher at lower flux levels. Finally, it was shown that the inclusion of the effect of manufacturing processes significantly improved the simulation accuracy of the core losses. A quantification and segregation of the effect of cutting, welding and shrink fitting is also presented for the studied machine.

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Section: B Loss Model For Welding Effectsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 96%

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Effects of Manufacturing Processes on Core Losses of Electrical Machines

Sundaria

Lehikoinen

Arkkio

et al. 2021

IEEE Trans. Energy Convers.

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“…• The fundamental frequency: this is largely exploited nowadays; high fundamental frequency reduce the dimensions and the mass of electrical machines by making the stator back iron and the rotor yoke very thin (few millimeters). High fundamental frequency usually leads to a high pole count paired with a concentrated winding around the tooth (q < 1) which offer a very compact motor due to the short end-windings [4].…”

Section: Introductionmentioning

confidence: 99%

Very Low Voltage and High Efficiency Motorisation for Electric Vehicles

Matt¹,

Boubaker²

2021

Emerging Electric Machines - Advances, Perspectives and Applications

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This chapter details the design of a new innovative solid bar winding for electrical machines (either motors or generators) dedicated to the electric propulsion. The goal of this new winding technique is to enhance the performance by better utilizing the stator slot and increasing the copper fill factor to higher than 75%, and also to reduce the inactive copper at the end-windings. Accordingly, many advantages arise from the application of this solid bar winding: higher torque-to-weight ratio, better thermal behavior, lower rotor losses, higher efficiency, higher reliability and lower cogging torque. However, the solid bar has its inherent constraints, which should be considered with care when designing an electric motor: the AC copper losses and the manufacturing process. The suggested winding technique aims at addressing these challenges.

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“…A great deal of work has been devoted to investigate the influence of manufacturing operations on the magnetic characteristics of electrical steels [1][2][3]. The fabrication of machine cores involves cutting steel laminations to produce the desired geometries of stator and rotor cores.…”

Section: Introductionmentioning

confidence: 99%

Modelling and analysis of the effects of cutting of core laminations in electric machines

Alatawneh

Saleem

Rahman

et al. 2020

IET Electric Power Applications

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Experimental measurements of electrical machine performances reveal a significant difference between simulations and measurements. It is known that the manufacturing processes of machines, particularly, the cutting of core laminations adversely affects material properties. The current techniques for considering the effects of cutting lack accuracy, computation efficiency and applicability for finite element (FE) software. This study proposes a method to model the variation in the magnetic properties of electrical steel due to cutting based on a non‐equal multi‐slice technique. In this work, the method has been validated and implemented on a FE permanent magnet synchronous motor model. Also, the proposed method has been compared with the single‐layer method.

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Measurements of Iron Loss in PMSM Stator Cores Based on CoFe and SiFe Lamination Sheets and Stemmed From Different Manufacturing Processes

Cited by 31 publications

References 20 publications

Effects of Manufacturing Processes on Core Losses of Electrical Machines

Effects of Manufacturing Processes on Core Losses of Electrical Machines

Very Low Voltage and High Efficiency Motorisation for Electric Vehicles

Modelling and analysis of the effects of cutting of core laminations in electric machines

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