Suppression of EMI Using Cost-Effective FPGA-Based Digital Communication Modulation Techniques in Power Converters

2021 ◽  
pp. 1-12
Author(s):  
A. Rajalakshmi ◽  
A. Kavitha
Keyword(s):  
Power Converters ◽  
Digital Communication ◽  
Cost Effective ◽  
Modulation Techniques

scholarly journals Simulating the Performance Characteristic of Passband Modulation Techniques in MATLAB Environment

2016 ◽  
Vol 9 (4) ◽  
pp. 52
Author(s):  
Saed Ali Thuneibat
Keyword(s):  
Communication Systems ◽  
Multiple Access ◽  
Digital Communication ◽  
Simulation Software ◽  
Mathematical Language ◽  
Block Coding ◽  
Modulation Techniques ◽  
Clear Result ◽  
High Level ◽  
Digital Communication Systems

<p>Now days, digital communication systems become complex and sophisticated. Not all vendors, if any, can understand the system and components of system that represent different modulation techniques, line and block coding, multiplexing and multiple access.</p><p>They need the conclusion about which of modulation techniques is the suitable for transmission and in the same time can save the power and bandwidth.</p><p>Engineers can study and analyze the modulation techniques and then compare between them to give such conclusion using modeling and simulation.</p><p>MATLAB is a high level mathematical language for technical computing.</p><p>In this paper we use MATLAB environment as simulation software to give on display a clear result that used to compare between two digital Passband modulation techniques BPSK and QPSK, and pinpoint the performance of the two techniques over selected parameters.</p>

Teleradiology: a review

1998 ◽  
Vol 4 (1) ◽  
pp. 25-35 ◽  
Author(s):  
C Ruggiero
Keyword(s):  
Digital Communication ◽  
Cost Effective ◽  
Hospital Environment ◽  
Equal Access ◽  
X Ray ◽  
Digital Radiographs ◽  
Communications Network ◽  
Teleradiology System ◽  
Access To Medical Care ◽  
Technology Trends

Teleradiology, like telemedicine generally, has arisen because of the shift to digital communication and the demand for equal access to medical care. Unlike much of telemedicine, teleradiology can be shown to be cost effective in many situations, particularly if the alternatives are to transport the X-ray film to a radiologist or to use the services of a visiting radiologist circuit riding'. A teleradiology system consists of an image acquisition section and an image-display section, connected by a communications network. Considerable technical and clinical standardization work has been carried out e.g. by the American College of Radiology and commercial teleradiology systems are now available from a number of manufacturers. Up to 1994, more than 7000 teleradiology systems had been sold by the two largest manufacturers. Technology trends suggest that it will soon be common for clinicians to view digital radiographs from outside radiology departments and probably from outside a hospital environment as well.

scholarly journals Modulation and Demodulation of Image Processing by Using GMSK

2018 ◽  
Vol 7 (3.27) ◽  
pp. 233
Author(s):  
Sandip R. Udawant ◽  
Satyawati Magar
Keyword(s):  
Image Processing ◽  
Digital Communication ◽  
Image Transmission ◽  
High Data Rate ◽  
Telecommunication Sector ◽  
High Data ◽  
Modulation And Demodulation ◽  
Modulation Technique ◽  
Modulation Techniques

Today digital communication is widely used in telecommunication sector in which the information is coded in the form of bits. There are many techniques that are implemented for modulation in digital communication some of them are BPSK, QPSK, M-ary PSK, GMSK. While transmitting an image there is always a challenge to retain the quality of an image by using these digital modulation techniques. In this paper GMSK technique is used for transmitting an image. The GMSK modulation technique is widely used in GSM techniques. By using GMSK modulation technique, which carries the information with high data rate and this is very important for image transmission. The proposed system gives better results than other modulation techniques like BPSK and M-ary PSK.  

scholarly journals SiC-Based Power Electronic Traction Transformer (PETT) for 3 kV DC Rail Traction

Energies ◽  
2020 ◽  
Vol 13 (21) ◽  
pp. 5573
Author(s):  
Marek Adamowicz ◽  
Janusz Szewczyk
Keyword(s):  
Energy Savings ◽  
Power Converters ◽  
Cost Effective ◽  
Building Blocks ◽  
Rolling Stock ◽  
Power Electronic ◽  
Medium Voltage ◽  
Dc Power ◽  
Traction System ◽  
Traction Power

The design of rolling stock plays a key role in the attractiveness of the rail transport. Train design must strictly meet the requirements of rail operators to ensure high quality and cost-effective services. Semiconductor power devices made from silicon carbide (SiC) have reached a level of technology enabling their widespread use in traction power converters. SiC transistors offering energy savings, quieter operation, improved reliability and reduced maintenance costs have become the choice for the next-generation railway power converters and are quickly replacing the IGBT technology which has been used for decades. The paper describes the design and development of a novel SiC-based DC power electronic traction transformer (PETT) intended for electric multiple units (EMUs) operated in 3 kV DC rail traction. The details related to the 0.5 MVA peak power medium voltage prototype, including the electrical design of the main building blocks are presented in the first part of the paper. The second part deals with the implementation of the developed SiC-based DC PETT into a regional train operating on a 3 kV DC traction system. The experimental results obtained during the testing are presented to demonstrate the performance of the developed 3 kV DC PETT prototype.

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