scholarly journals TURBOGENERATOR ROTOR HEATING IN PRESENCE OF ROTOR WINDING DEFECTS AND EXCITATION CURRENT FORCING

2020 ◽  
Vol 0 (1) ◽  
pp. 10-15
Author(s):  
Yu. M. Vaskovskyi ◽  
O. A. Geraskin
Keyword(s):  
Excitation Current ◽  
Turbogenerator Rotor ◽  
Rotor Winding

scholarly journals F311 THE ANALYSIS OF GENERATOR EXCITATION CURRENT HARMONICS ON STATOR AND ROTOR WINDING FAULT

2003 ◽  
Vol 2003.3 (0) ◽  
pp. _3-433_-_3-437_
Author(s):  
Shu ting Wan ◽  
He ming Li ◽  
Yong gang Li ◽  
Zhao feng Xu ◽  
Er shu Xu
Keyword(s):  
Excitation Current ◽  
Current Harmonics ◽  
Rotor Winding

Effects of Rotor Winding Structure on the BDFM Equivalent Circuit Parameters

2015 ◽  
Vol 30 (4) ◽  
pp. 1660-1669 ◽  
Author(s):  
Ashknaz Oraee ◽  
Ehsan Abdi ◽  
Salman Abdi ◽  
Richard McMahon ◽  
Peter J. Tavner
Keyword(s):  
Equivalent Circuit ◽  
Equivalent Circuit Parameters ◽  
Rotor Winding

White LED Energy-Efficient Drive Technology Based on Luminescent Relaxation Properties

2011 ◽  
Vol 347-353 ◽  
pp. 1494-1497
Author(s):  
Yi Zhang ◽  
Jing Han ◽  
Lian Fa Bai ◽  
Qian Chen ◽  
Guo Hua Gu
Keyword(s):  
High Performance ◽  
Leading Edge ◽  
Pulse Excitation ◽  
White Led ◽  
Excitation Current ◽  
Effective Utilization ◽  
Relaxation Properties ◽  
Attenuation Characteristic ◽  
Driving Model ◽  
Core Idea

This study is a high-performance, energy-saving drive technology for all pcLED based on luminescence relaxation properties. Its core idea is coordination between power driving model and pcLED relaxation properties. Compared with relative small pulse width, forward pulse excitation current can make pcLED luminescence tends to its saturation peak rapidly during this period because of the steep leading edge of relaxation properties. And in the vacant period of forward pulse excitation current, because of the chosen of best duty cycle, it will be the most effective utilization for luminescence afterglow which has slow attenuation characteristic.

Development of the Meridian-Visualizing System that Superimposes a Bio-signal upon a Body Image

2004 ◽  
Vol 32 (04) ◽  
pp. 631-640
Author(s):  
Dong-Myong Jeong ◽  
Yong-Heum Lee ◽  
Myeong Soo Lee
Keyword(s):  
Body Image ◽  
Skin Resistance ◽  
The Body ◽  
Acupuncture Points ◽  
Identification System ◽  
Electrode Position ◽  
Excitation Current ◽  
System A ◽  
Dc Excitation ◽  
Single Power

The precise selection and the identification of acupuncture points are essential for the diagnosis and treatment of patients in Oriental medicine. In this study, we have developed a meridian identification system using Single-Power Alternating Current (SPAC), which discriminates between true acupoints and non-acupoints. The SPAC system is not affected by skin resistance or pressure and is more accurate than the existing meridian location system, which uses direct current (DC) excitation current. The accuracy of the meridian location is ensured with the SPAC system because it has the highest sensitivity and the lowest effect on the human body. A microprocessor is used to enhance reliability and increase the accuracy of the SPAC measurements. Current distribution is displayed using an image that overlays the measured skin current on the body image. The positions of the acupoints are then displayed on the body image. This method visualizes the meridian by measuring skin current with an improved electrode using the acupoint discrimination system. A computer display shows the transmitted current as a color related to the electrode position. We demonstrated that by changing the point of measurement on the skin and tracing the electrode on the screen, it is possible to visualize acupoints and meridian phenomena using the color display.

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