scholarly journals Evaluation of Iron Loss Distribution of Laminated Stator Core by Interlocking by means of Heat Measurement Method

2019 ◽  
Vol 27 (2) ◽  
pp. 226-231
Author(s):  
Takeru SATO ◽  
Toshimi NARUSE ◽  
Kouji KEBUKAWA ◽  
Takashi TODAKA
Keyword(s):  
Measurement Method ◽  
Iron Loss ◽  
Stator Core ◽  
Loss Distribution ◽  
Heat Measurement

Evaluation of Iron Loss Distribution on Stator Surface of Induction Motors by means of Heat Measurement Method

2017 ◽  
Vol 137 (1) ◽  
pp. 65-70 ◽  
Author(s):  
Takeru Sato ◽  
Tsukuru Kinoshita ◽  
Hiroyasu Shimoji ◽  
Takashi Todaka
Keyword(s):  
Measurement Method ◽  
Induction Motors ◽  
Iron Loss ◽  
Loss Distribution ◽  
Heat Measurement

Visualization of Iron Loss Distribution by Thermal Measurement Method

2013 ◽  
Vol 133 (4) ◽  
pp. 217-223
Author(s):  
Hiroyasu Shimoji ◽  
Takashi Todaka ◽  
Masato Enokizono
Keyword(s):  
Measurement Method ◽  
Iron Loss ◽  
Thermal Measurement ◽  
Loss Distribution

Evaluation of the Iron Loss Distribution of the Actual Stator Core Using Small Excitation Inner Cores

2012 ◽  
Vol 721 ◽  
pp. 90-95 ◽  
Author(s):  
Mohachiro Oka ◽  
Shimada Kazunori ◽  
Kawano Makoto ◽  
Masato Enokizono
Keyword(s):  
Inner Core ◽  
Complex Structure ◽  
Iron Loss ◽  
Manufacturing Processes ◽  
Stator Core ◽  
Loss Distribution ◽  
Rotating Machine ◽  
Iron Losses ◽  
Shrink Fitting ◽  
The Difference

To obtain the basic data to manufacture the highly effective rotating machine, the axial iron loss distribution of an actual stator core of the complex structure was evaluated by using the small excitation inner core. The laminated thickness of this small excitation inner core is approximately 1/6 of the thickness of the stator core. Therefore, the circumferential iron loss distribution of the stator core and the axial iron loss distribution of a stator core can be measured by using this small excitation inner core. Then, to compare the difference of the axial iron loss distribution in the stator core, we investigated the axial iron loss distribution in the actual stator core after two manufacturing processes, the laminating process and the shrink fitting process. The iron losses were measured in three places (the edge, the quarter part, and the center) of two stator cores. As a result of our investigation, the axial iron loss distribution in the actual stator core clearly changed. This paper reports on the axial iron loss distribution in two manufacturing processes in two actual stator cores measured by using the small excitation inner core.

Local Iron Loss Distribution in Iron Cores with a Thermographic Camera

2021 ◽  
Vol 141 (6) ◽  
pp. 398-404
Author(s):  
Yuki Noboridate ◽  
Takeru Sato ◽  
Takashi Todaka ◽  
Hiroyasu Shimoji
Keyword(s):  
Iron Loss ◽  
Loss Distribution ◽  
Thermographic Camera

scholarly journals Analytical Iron Loss Evaluation in the Stator Yoke of Slotless Surface-Mounted PM Machines

2021 ◽  
Author(s):  
Matteo Leandro ◽  
Nada Elloumi ◽  
Alberto Tessarolo ◽  
Jonas Kristiansen Nøland
Keyword(s):  
Core Loss ◽  
Lookup Table ◽  
Iron Loss ◽  
Estimation Methods ◽  
Design Stage ◽  
Loss Assessment ◽  
Stator Core ◽  
Element Analysis ◽  
Field Solution ◽  
Loss Models

<div>One of the attractive benefits of slotless machines is low losses at high speeds, which could be emphasized by a careful stator core loss assessment, potentially available already at the pre-design stage. Unfortunately, mainstream iron loss estimation methods are typically implemented in the finite element analysis (FEA) environment with a constant-coefficients dummy model, leading to weak extrapolations with huge errors. In this paper, an analytical method for iron loss prediction in the stator core of slotless PM machines is derived. It is based on the extension of the 2-D field solution over the entire machine geometry. Then, the analytical solution is combined with variable- or constant-coefficient loss models (i.e., VARCO or CCM), which can be efficiently computed by vectorized post-processing. VARCO loss models are shown to be preferred at a general level.Moreover, the paper proposes a lookup-table-based (LUT) solution as an alternative approach. The main contribution lies in the numerical link between the analytical field solution and the iron loss estimate, with the aid of a code implementation of the proposed methodology. First, the models are compared against a sufficiently dense dataset available from laminations manufacturer for validation purposes. Then, all the methods are compared for the slotless machine case. Finally, the models are applied to a real case study and validated experimentally.</div>

Noncontact iron loss measurement of motor stator core using radiation thermometer in the atmosphere

2020 ◽  
Vol 20 (4) ◽  
pp. 131-136
Author(s):  
D. Wakabayashi ◽  
T. Nishimura ◽  
M. Oka ◽  
M. Enokizono
Keyword(s):  
Radiation Thermometer ◽  
Iron Loss ◽  
Stator Core ◽  
Loss Measurement

Iron Loss Reduction in Permanent Magnet Synchronous Motor by Using Stator Core Made of Nanocrystalline Magnetic Material

2017 ◽  
Vol 53 (11) ◽  
pp. 1-6 ◽  
Author(s):  
Nicolas Denis ◽  
Masaki Inoue ◽  
Keisuke Fujisaki ◽  
Hiromitsu Itabashi ◽  
Tomoaki Yano
Keyword(s):  
Magnetic Material ◽  
Permanent Magnet ◽  
Permanent Magnet Synchronous Motor ◽  
Synchronous Motor ◽  
Iron Loss ◽  
Loss Reduction ◽  
Stator Core

DETERMINATION OF IRON LOSS DISTRIBUTION IN INVERTER FED INDUCTION MOTORS

1997 ◽  
Vol 25 (6) ◽  
pp. 649-660 ◽  
Author(s):  
N. BENAMROUCHE ◽  
A. BOUSBAINE ◽  
W. F. LOW ◽  
M. McCORMICK ◽  
A. OMETTO ◽  
...  
Keyword(s):  
Induction Motors ◽  
Iron Loss ◽  
Loss Distribution

Stator Current Vector Determination Under Consideration of Local Iron Loss Distribution for Partial Load Operation of PMSM

2016 ◽  
Vol 52 (4) ◽  
pp. 3005-3012 ◽  
Author(s):  
Andreas Ruf ◽  
Simon Steentjes ◽  
Andreas Thul ◽  
Kay Hameyer
Keyword(s):  
Iron Loss ◽  
Loss Distribution ◽  
Stator Current ◽  
Current Vector ◽  
Partial Load
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