Loss Analysis of Induction Motors by Considering Shrink Fitting of Stator Housings

Yamazaki, Katsumi; Fukushima, Wataru

doi:10.1109/tmag.2014.2357842

Cited by 22 publications

(16 citation statements)

References 11 publications

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“…Effect of shrink fitting start to diminish towards magnetic saturation. Similar observation are also reported in literature [12], [21].…”

Section: Parameter For Shrink Fitting Loss Modelsupporting

confidence: 92%

“…Further, the core losses are calculated by FE post-processing and it was observed that most of the stator core losses are contributed by the yoke region (about 70 %). As shrink fitting generated stresses mainly affect the yoke region [12], the difference in the measured stator core losses is due to the increased core losses in the yoke region. Fig.…”

Section: Parameter For Shrink Fitting Loss Modelmentioning

confidence: 99%

“…Compressive stresses degrade the magnetic permeability and increase the iron loss density of the electrical steel [10], [11]. References [12], [13] show the modeling and measurements of stress effects on the electrical machines and an increase as high as 10% in the iron loss was found.…”

Section: Introductionmentioning

confidence: 98%

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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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“…Effect of shrink fitting start to diminish towards magnetic saturation. Similar observation are also reported in literature [12], [21].…”

Section: Parameter For Shrink Fitting Loss Modelsupporting

confidence: 92%

Section: Parameter For Shrink Fitting Loss Modelmentioning

confidence: 99%

See 1 more Smart Citation

Effects of Manufacturing Processes on Core Losses of Electrical Machines

Sundaria

Lehikoinen

Arkkio

et al. 2021

IEEE Trans. Energy Convers.

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show abstract

“…The deterioration of magnetic properties during the process of manufacturing electrical machines has attracted considerable research interest in the last twenty years. The manufacturing process such as pressing [1,2], welding [3], and cutting [4] yields residual stress in electric steel laminations. Induced stress, particularly that due to the cutting of electrical steel laminations has been identified as a factor that causes severe deterioration of magnetic properties [5][6][7][8].…”

Section: Introductionmentioning

confidence: 99%

Mechanical Cutting Effect of Electrical Steel on the Performance of Induction Motors

et al. 2020

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This paper investigates the mechanical cutting effect on the performance of induction motors. Numerical modeling of cutting effect is described in this paper. The approach inverts the degradation of the permeability model for inclusion of it into magnetic vector potential formula by Newton method. The effect of cutting on iron losses is implemented in finite element simulation. The simulation results are compared with experimental results of prototype IE4 efficiency induction motors rated at 2.2 kW. One of them was manufactured with annealed electrical steel lamination to highlight the cutting effect on the performance of the motor. The notable effect of cutting was measured in increased stator current; however, negligible differences were found in measured iron losses. The presented model in this paper follows the measurements.

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“…Energy losses incurred in making the conversion from electrical to mechanical energy can be separated into three categories (1) mechanical losses, (2) winding losses, and (3) iron losses [6][7][8][9][10][11][12][13].…”

Section: Introductionmentioning

confidence: 99%

Corrosion Effects on the Magnetic Behavior of Magnetic Circuit of an Induction Machine

Ouadah¹,

Touhami²,

Ibtiouen³

et al. 2018

PIER M

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In This paper, the effect of corrosion on the magnetic behavior of a magnetic material used as a magnetic circuit in the induction machines is studied. With this objective, the magnetic properties of the samples with corrosion and without corrosion were evaluated by the study of hysteresis loops using a homemade vibrating sample magnetometer (VSM). The magnetic parameters extracted from the hysteresis loops such as saturation magnetization, coercive, remanent magnetization, squareness ratio, magnetic permeability, and hysteresis area were analyzed. It was shown that more energy is required to demagnetize the sample with corrosion than the sample without corrosion, and the hysteresis loss in the case of the sample with corrosion is more than the case of the sample without corrosion. These mean that when the corrosion is presented in the magnetic circuits of the induction machine, the hysteresis loss increases, consequentially reducing the machine efficiency.

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Loss Analysis of Induction Motors by Considering Shrink Fitting of Stator Housings

Cited by 22 publications

References 11 publications

Effects of Manufacturing Processes on Core Losses of Electrical Machines

Effects of Manufacturing Processes on Core Losses of Electrical Machines

Mechanical Cutting Effect of Electrical Steel on the Performance of Induction Motors

Corrosion Effects on the Magnetic Behavior of Magnetic Circuit of an Induction Machine

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