Effect of DC-Bias Current in Perpendicular Magnetic Recording

2004 ◽  
Vol 28 (3) ◽  
pp. 275-278
Author(s):  
K. Taguchi ◽  
S. Takahashi ◽  
K. Yamakawa ◽  
K. Ouchi
Keyword(s):  
Magnetic Recording ◽  
Bias Current ◽  
Perpendicular Magnetic Recording ◽  
Dc Bias

Influence of Magnetic Clustering on Track-Edge Noise in Perpendicular Magnetic Recording

2006 ◽  
Vol 30 (2) ◽  
pp. 122-126 ◽  
Author(s):  
D. Sudo ◽  
M. Hashimoto ◽  
K. Miura ◽  
H. Muraoka ◽  
H. Aoi ◽  
...  
Keyword(s):  
Magnetic Recording ◽  
Perpendicular Magnetic Recording

scholarly journals A Dual Rising Edge Shift Algorithm for Eliminating the Transient DC-Bias Current in Transformer for a Dual Active Bridge Converter

Energies ◽  
2021 ◽  
Vol 14 (14) ◽  
pp. 4264
Author(s):  
Michal Gierczynski ◽  
Lech M. Grzesiak ◽  
Arkadiusz Kaszewski
Keyword(s):  
Phase Shift ◽  
Power Flow ◽  
Bias Current ◽  
Compensation Algorithm ◽  
Dual Active Bridge ◽  
Simple Implementation ◽  
Dc Bias ◽  
Fast Settling ◽  
Parameter Values ◽  
Laboratory Prototype

This paper deals with a well-known problem of the transient DC-bias current occurring during a phase shift transition in dual active bridge (DAB) DC/DC converters. This phenomenon, if not compensated, can cause damage to the converter or deteriorate its performance. One aim of this paper is to present a solution which allows for the elimination of the undesired transient DC-bias component in current waveforms. This solution is the dual rising edge shift (DRES) compensation algorithm. It provides a very simple implementation and fast settling time within the first half of a switching period. Moreover, the solution is independent on any measurements or system parameter values. It is based on the double-sided single phase shift (DSSPS) modulation, which is described in detail along with a converter model in steady-state. Then, the mechanisms leading to the transient DC-bias are explained, and the compensation algorithm is derived. The performance of the algorithm has been tested using a laboratory prototype. A comprehensive set of tests, involving rapid step changes in power flow and frequency sweep, are provided. Finally, the features of the proposed algorithm are briefly discussed.

Impact of Media Design on Track Edge in Perpendicular Magnetic Recording

2009 ◽  
Vol 45 (2) ◽  
pp. 905-910 ◽  
Author(s):  
Yong-Chang Feng ◽  
M.J. Hurben ◽  
Nan-Hsiung Yeh ◽  
Chun-Yang Tseng ◽  
Anna Zheng ◽  
...  
Keyword(s):  
Magnetic Recording ◽  
Perpendicular Magnetic Recording ◽  
Media Design

Development of CoX/Pd multilayer perpendicular magnetic recording media with granular seed layers

2002 ◽  
Vol 242-245 ◽  
pp. 297-303 ◽  
Author(s):  
Yukiko Kubota ◽  
Dieter Weller ◽  
Mei-Ling Wu ◽  
Xiaowei Wu ◽  
Ganping Ju ◽  
...  
Keyword(s):  
Magnetic Recording ◽  
Recording Media ◽  
Magnetic Recording Media ◽  
Perpendicular Magnetic Recording ◽  
Seed Layers
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