Diode laser scribing of amorphous alloys for core loss reduction in distribution transformers

1998 ◽  
Author(s):  
Satish V. Ponnaluri ◽  
P. A. Molian
Keyword(s):  
Diode Laser ◽  
Amorphous Alloys ◽  
Core Loss ◽  
Loss Reduction ◽  
Laser Scribing ◽  
Distribution Transformers

Diode laser scribing of non‐oriented 3 wt% Si‐steel for core loss reduction

1997 ◽  
Vol 9 (3) ◽  
pp. 147-153 ◽  
Author(s):  
Ravisankar Gurusamy ◽  
P. A. Molian
Keyword(s):  
Diode Laser ◽  
Core Loss ◽  
Loss Reduction ◽  
Laser Scribing

Core loss reduction in grain-oriented silicon steels by excimer laser scribing

2001 ◽  
Vol 112 (2-3) ◽  
pp. 199-204 ◽  
Author(s):  
Satish V Ponnaluri ◽  
Ramachand Cherukuri ◽  
P.A Molian
Keyword(s):  
Excimer Laser ◽  
Core Loss ◽  
Loss Reduction ◽  
Laser Scribing

Investigation of Laser Scribing Technics for Reducing Core Loss of Grain-Oriented Silicon Steels

2010 ◽  
Vol 455 ◽  
pp. 141-145
Author(s):  
Y. Huang ◽  
Y. Liu ◽  
G.L. Zhu
Keyword(s):  
Pulse Energy ◽  
Eddy Currents ◽  
Orthogonal Experiment ◽  
Core Loss ◽  
Loss Reduction ◽  
Scanning Velocity ◽  
Laser Marking ◽  
Laser Scribing ◽  
Cold Rolling And Annealing ◽  
Steel Surfaces

A laser is often considered to scribe the steel surfaces after cold-rolling and annealing to reduce the energy losses associated with hysteresis and eddy currents. In order to maximize the loss reduction of this process, the laser scribing technics was investigated in details. In this work, three laser scribing parameters including pulse energy, scanning velocity and scribing spacing, which are highly related to the loss reduction, were selected for the study. A L9(34) orthogonal experiment was designed and carried out by an Nd:Yag laser marking machine. The results indicate that the subsequence of significance of the three factors on core loss reduction is as follows: pulse energy, scribing spacing and scanning velocity. And an optimized combination of parameters is obtained by range method.

Core loss reduction by laser scribing in grain-oriented 3% Si-Fe under different magnetizing direction

2004 ◽  
Vol 201 (8) ◽  
pp. 1815-1818 ◽  
Author(s):  
K. S. Ryu ◽  
Youn-Ju Park ◽  
C. G. Kim ◽  
Je Cheon Ryu ◽  
D. Son
Keyword(s):  
Core Loss ◽  
Loss Reduction ◽  
Laser Scribing

Core Loss Reduction for High-Speed Motor

2018 ◽  
Author(s):  
Masato Enokizono ◽  
Daisuke Wakabayashi ◽  
Yuji Tsuchida ◽  
Shohei Ueno ◽  
Naoya Soda
Keyword(s):  
High Speed ◽  
Core Loss ◽  
Loss Reduction

The Variation of Magnetic Properties of Fe-Based Amorphous Alloys Along the Ribbon Length

1981 ◽  
Vol 8 ◽  
Author(s):  
Takashi Sato ◽  
Tsutomu Ozawa ◽  
Toshio Yamada ◽  
Ryutaro Matsumoto
Keyword(s):  
Magnetic Properties ◽  
Surface Temperature ◽  
Cooling Rate ◽  
Amorphous Alloys ◽  
Core Loss ◽  
Ribbon Thickness ◽  
Surface Layers ◽  
Roller Surface ◽  
Amorphous Ribbons ◽  
The Relationship

ABSTRACTThe variation of ac magnetic properties along the length of melt-spun Fe-based amorphous ribbons was examined in relation to the variations of the roller surface temperature and the ribbon thickness. The results indicated that the lengthwise variation of magnetic properties strongly depends both on the roller surface temperature and the ribbon thickness. The critical cooling rates at which core loss begins to increase were determined from the relationship between core loss and cooling rate. For ribbons cast at lower cooling rate than critical cooling rate, the finedomain patterns were usually observed on the free surface. From the disappearance of the fine-domain pattern and the remarkable decrease of core loss by removal of the surface layers, it is ascertained that the surface layers deteriorate magnetic properties.

Sign in / Sign up

Export Citation Format

Share Document