Results 241 to 250 of about 7,891,445 (296)

Analysis of Common Mode Noise Reduction Mechanism in A Shielded Inductor

2020 IEEE 29th International Symposium on Industrial Electronics (ISIE), 2020
To achieve high power density, a power converter circuit is often operated at high frequency, and fast switching devices are also combined to reduce switching loss. On the other hand, both high frequency and fast switching greatly increases conductive noise amplitude at frequency over several megahertz. Therefore, electromagnetic compatibility (EMC) is
Mamoru Sasaki, Jun Imaoka, Masayoshi Yamamoto, Akira Nakano, Koji Fuse   +4 more
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Common mode noise rejection in measuring channels

Instruments and Experimental Techniques, 2015
There is a solution proposed in this paper to reject common mode noise (caused by potential difference between a sensor and a measurement channel) in measurement channels. Its main idea is to provide power supply of measuring subsystem using either an accumulator or a capacitor, which is periodically charged from the electric network by switching on ...
Su Jun, Orest Kochan
openaire   +1 more source

Mitigation of scintillation noise by common mode rejection

SPIE Proceedings, 2005
There is increasing interest in free space optical communications as an alternative to fibre optics and radio frequency communications, particularly in 'last mile' applications and applications with weight and power restrictions e.g. communications with unmanned aerial vehicles.
Kenneth J. Grant, Kerry A. Corbett, Bradley A. Clare, James E. Davies, Brett D. Nener   +4 more
openaire   +1 more source

Research on common mode noise evaluation method

2008 IEEE Conference on Cybernetics and Intelligent Systems, 2008
Common mode noise produced in single-phase full-bridge converter with bipolar SPWM is analysized. Common mode noise level evaluation method must be monodromy value and calculated simply in common mode EMI suppression system. The three evaluation indexes of maximal spectrum, average spectrum and common mode noise energy are proposed to express the ...
null Yonggao Zhang, null Yanli Gao, null Ming Yao, null Qiang Dong   +3 more
openaire   +1 more source

Common mode noise characteristics of resonant converters

2010 IEEE Energy Conversion Congress and Exposition, 2010
This paper investigates the common mode (CM) noise characteristics of resonant converters. Noise sources of CM EMI in isolated resonant converters were identified and analyzed. The operating point of the resonant converter has significant impact on CM noise of the converter.
Pengju Kong, Daocheng Huang, Dianbo Fu, Fred C. Lee   +3 more
openaire   +1 more source

Common-mode noise reduction in the Watkins-Johnson converter

2007 7th Internatonal Conference on Power Electronics, 2007
Common-mode conducted noise in switching converters frequently causes radiated noise emission from their power code, so it is important to reduce this noise to meet EMC. In this paper common-mode conducted noise is much reduced in the Watkins-Johnson converter by current cancellation.
Masahito Shoyama, Tamotsu Ninomiya
openaire   +2 more sources

A novel common-mode noise cancellation technique for VDSL applications

IEEE Transactions on Instrumentation and Measurement, 2003
Very-high-speed digital subscriber loop modems operate in frequency bands which coincide with many significant radio-frequency interference sources, particularly commercial AM radio. In these bands, the balance of most twisted-pair cables is low enough to allow substantial interference to transfer via the differential mode, disrupting the transmitted ...
Tet Hin Yeap, David K. Fenton, Pierre D. Lefebvre   +2 more
openaire   +1 more source

New concept about common mode noise

2009 IEEE International Conference on Microwaves, Communications, Antennas and Electronics Systems, 2009
We will show that in a typical switched mode power supply (SMPS), 3 types of conducted electromagnetic interference exist. This is a further development of the well known and widely applied theory that limits the type of noises to differential mode (DM) and common mode (CM).
openaire   +1 more source

Balanced switching converter to reduce common-mode conducted noise

IEEE Transactions on Industrial Electronics, 2003
Because conventional switching converters have usually used unbalanced circuit topologies, parasitic capacitance between the drain/collector of an active switch and the frame ground through its heat sink may generate the common-mode conducted noise.
Masahito Shoyama, Ge Li, Tamotsu Ninomiya   +2 more
openaire   +1 more source

Common-mode noise generation in a DC-to-DC converter

1979 IEEE Power Electronics Specialists Conference, 1979
Analytical and experimental considerations on the common-mode noise in a dc-to-dc converter are discussed. Analyzing the mechanism of the commom-mode noise generation by means of a high-frequency equivalent circuit, we estimate the output noise voltage generated during the transistor's turnon time.
Tamotsu Ninomiya, Koosuke Harada, Michel Mamon   +2 more
openaire   +1 more source