scholarly journals Diophantine equation based model of data transmission errors caused by interference generated by DC-DC converters with deterministic modulation

2016 ◽  
Vol 64 (3) ◽  
pp. 575-580 ◽  
Author(s):  
J. Bojarski ◽  
R. Smolenski ◽  
P. Lezynski ◽  
Z. Sadowski
Keyword(s):  
Power Systems ◽  
Diophantine Equation ◽  
Data Transmission ◽  
Electromagnetic Interference ◽  
Electromagnetic Compatibility ◽  
Transmission Error ◽  
Domain Model ◽  
Power Electronic ◽  
Transmission Errors ◽  
Evaluation Of Data

AbstractThe assurance of the electromagnetic compatibility of sensitive smart metering systems and power electronic converters, which introduce high-level electromagnetic interference is important factor conditioning reliable operation of up to date power systems. Presented experimental results have shown that currently binding, frequency domain tests are ineffective for the evaluation of data transmission error hazards. The proposed in this paper mathematical, time-domain model, based on Diophantine equation, enables evaluation of data transmission errors caused by interference introduced by DC-DC power electronic interfaces with deterministic modulation. In the paper there have been presented possible application areas for the proposed model.

scholarly journals Aggregated Conducted Electromagnetic Interference Generated by DC/DC Converters with Deterministic and Random Modulation

Energies ◽  
2020 ◽  
Vol 13 (14) ◽  
pp. 3698 ◽  
Author(s):  
Hermes Loschi ◽  
Robert Smolenski ◽  
Piotr Lezynski ◽  
Douglas Nascimento ◽  
Galina Demidova
Keyword(s):  
Power Systems ◽  
Electromagnetic Interference ◽  
Electromagnetic Compatibility ◽  
Low Frequency ◽  
Power Electronic ◽  
Laboratory Setup ◽  
Measuring Techniques ◽  
Random Modulation ◽  
Multiple Power ◽  
Harmonic Components

The assessment of electromagnetic compatibility (EMC) is important for both technical and legal reasons. This manuscript addresses specific issues that should be taken into account for proper EMC assessment of energy systems that use power electronic interfaces. The standardized EMC measuring techniques have been used in a laboratory setup consisting in two identical DC/DC converters with deterministic and random modulations. Measuring difficulties caused by the low frequency envelopes, resulting from frequency beating accompanying aggregation of harmonic components of similar frequencies, were indicated as a phenomenon that might lead to significant problems during the EMC assessment using currently binding standards. The experimental results describing deterministic and random modulated converters might be useful for practitioners implementing power interfaces in microgrids and power systems as well as for researchers involved in EMC assurance of power systems consisting in multiple power electronic interfaces.

High-Speed Serial Data Transmission Error Control Based on Fuzzy Classification

2018 ◽  
Vol 22 (7) ◽  
pp. 1077-1081
Author(s):  
Zhimin Zhang ◽  
Keyword(s):  
Energy Consumption ◽  
Packet Loss ◽  
Data Transmission ◽  
High Speed ◽  
Error Control ◽  
Transmission Error ◽  
Fuzzy Classification ◽  
Control Data ◽  
Transmission Errors ◽  
Serial Data

At present, the error control method for high-speed serial data transmission obtains the errors by comparison and then controls them. If the data transmission channel is not denoised, the packet loss and error codes become serious, and energy consumption increases. The use of fuzzy classification is proposed to control data transmission errors. The method uses the combination of wavelet transform and transform domain difference to double denoise the channel, and it completes the clustering of data transmission errors by fuzzy classification. Considering packet loss, error codes, and energy consumption in data transmission error control, when the communication distance between two nodes is small, automatic repeat request is used to control data transmission errors. As the distance between nodes increases, forward error correction is used to control data transmission errors. When the communication distance gradually increases, data transmission errors are controlled by hybrid automatic repeat request. Experiments showed that the proposed method can reduce the data transmission error, control energy consumption, packet loss rate, and bit error rate, and enhance the denoising effect.

scholarly journals Chaos versus EMI: Methodologies and Practice

2019 ◽  
Vol 29 (12) ◽  
pp. 1930033
Author(s):  
Yuhong Song ◽  
Junying Niu ◽  
Zhong Li
Keyword(s):  
Circuit Design ◽  
Electromagnetic Interference ◽  
Electromagnetic Compatibility ◽  
Power Electronic ◽  
Power Electronic Converters ◽  
Daily Lives ◽  
Practical Applications ◽  
The Past ◽  
Spectrum Feature ◽  
Continuous Power

This paper gives a review on the methodologies of using the continuous power spectrum feature of chaos to suppress electromagnetic interference (EMI), which have been extensively studied in the past 15 years, and their practical applications in power electronic converters of various topologies and powers, which have been widely employed in various electrical and electronic devices in our daily lives and thus form the main sources of EMI. This paper not only points out that chaotic modulation is effective and feasible in improving the electromagnetic compatibility (EMC) of various types of power electronic converters, but also gives the circuit design methodologies for different kinds of converters, especially the design methods of modules and chips. It can serve as a guide for engineering applications.

Analysis of Electromagnetic Compatibility about Air-Power-Off of Aircraft Power System

2012 ◽  
Vol 503-504 ◽  
pp. 983-986 ◽  
Author(s):  
Guo Qiang Sun ◽  
Gang Guo ◽  
Yong Bo Yang ◽  
Dong Ping Yang ◽  
Jian Feng Zhang
Keyword(s):  
Power Systems ◽  
Electromagnetic Interference ◽  
Electromagnetic Compatibility ◽  
Electromagnetic Environment ◽  
Digital Controllers ◽  
Air Power ◽  
Input And Output ◽  
Ac Power ◽  
Signal Input ◽  
Airborne Electromagnetic

At present, main AC power systems of advanced fighters all apply digital controllers with microprocessors. The signal input and output circuits are vulnerable to the effects of electromagnetic interference, which may cause air-power-off fault. The paper analyzes the electromagnetic environment on the aircraft, discusses the airborne electromagnetic compatibility by comparing domestic and international contents and limitations of the electromagnetic standard. Furthermore, it proposes measures to resolve the electromagnetic compatibility

Selected conducted electromagnetic interference issues in distributed power systems

2009 ◽  
Vol 57 (4) ◽  
pp. 383-393 ◽  
Author(s):  
R. Smoleński
Keyword(s):  
Power Systems ◽  
Electromagnetic Interference ◽  
Electromagnetic Compatibility ◽  
Power Transformer ◽  
Frequency Converter ◽  
Electric Grid ◽  
Distributed Power ◽  
Medium Voltage ◽  
Distributed Power Systems ◽  
Four Quadrant

Selected conducted electromagnetic interference issues in distributed power systemsThis paper addresses the specific issues associated with electromagnetic compatibility that should be taken into account at the developmental stage of distributed systems. The main aim is to establish how far conducted interferences can penetrate the electric grid and how the group of converters, which individually meet EMC standards, influence the mains supply. The measured results of the spread of electromagnetic interference (EMI) current over a typical local electric grid and the low and medium voltage side of the power transformer are presented. The commonly applied, in distributed power systems, four-quadrant converter has been used as a test interference source. The limitations in the applicability of standardized methods for evaluation of aggregated conducted interferences have been presented in a system consisting of a group of two-quadrant frequency converter drives.

scholarly journals The Effect of EMI Generated from Spread-Spectrum-Modulated SiC-Based Buck Converter on the G3-PLC Channel

Electronics ◽  
2021 ◽  
Vol 10 (12) ◽  
pp. 1416
Author(s):  
Waseem El Sayed ◽  
Piotr Lezynski ◽  
Robert Smolenski ◽  
Niek Moonen ◽  
Paolo Crovetti ◽  
...  
Keyword(s):  
Channel Capacity ◽  
Error Rate ◽  
Spread Spectrum ◽  
Electromagnetic Interference ◽  
Electromagnetic Compatibility ◽  
Power Converters ◽  
Transmission Error ◽  
Buck Converter ◽  
Capacity Degradation ◽  
Capacity Reduction

Power line communication (PLC) is increasingly emerging as an important communication technology for the smart-grid environment. As PLC systems use the existing infrastructure, they are always exposed to conducted electromagnetic interference (EMI) from switching mode power converters, which need to be tightly controlled to meet EMC regulations and to ensure the proper operation of the PLC system. For this purpose, spread-spectrum modulation (SSM) techniques are widely adopted to decrease the amplitude of the generated EMI from the power converters so as to comply with EMC regulations. In this paper, the influence of a spread-spectrum-modulated SiC-based buck converter on the G3-PLC channel performance is described in terms of channel capacity reduction using the Shannon–Hartley equation. The experimental setup was implemented to emulate a specific coupling path between the power and communication circuits and the channel capacity reduction was evaluated by the Shannon–Hartley equation in several operating scenarios and compared with the measured frame error rate. Based on the obtained results, SSM provides the EMI spectral peak amplitude reduction required to pass the electromagnetic compatibility (EMC) tests, but results in increased EMI-induced channel capacity degradation and increased transmission error rate in PLC systems.

scholarly journals FPGA-Based System for Electromagnetic Interference Evaluation in Random Modulated DC/DC Converters

Energies ◽  
2020 ◽  
Vol 13 (9) ◽  
pp. 2389 ◽  
Author(s):  
Hermes Loschi ◽  
Piotr Lezynski ◽  
Robert Smolenski ◽  
Douglas Nascimento ◽  
Wojciech Sleszynski
Keyword(s):  
Fixed Point ◽  
Electromagnetic Interference ◽  
Electromagnetic Compatibility ◽  
Probability Density Functions ◽  
Density Functions ◽  
Power Electronic ◽  
Power Electronic Converters ◽  
Control Techniques ◽  
Programming Tools ◽  
Field Programmable

Field-Programmable Gate Array (FPGA) provides the possibility to design new “electromagnetic compatibility (EMC) friendly” control techniques for power electronic converters. Such control techniques use pseudo-random modulators (RanM) to control the converter switches. However, some issues connected with the FPGA-based design of RanM, such as matching the range of fixed-point numbers, might be challenging. The modern programming tools, such as LabVIEW, may facilitate the design process, but there are still fixed-point operations and limitations in arithmetic operations. This paper presents the design insights on the FPGA-based EMC friendly control system for DC/DC converter. Probability density functions (PDF) are used to analyse and improve pseudo-random algorithms. The theoretical algorithms, hardware details and experimental results are presented and discussed in terms of conducted electromagnetic interference emission.

Performance Evaluation of Data Transmission in Maritime Delay-Tolerant-Networks

2013 ◽  
Vol E96.B (6) ◽  
pp. 1435-1443 ◽  
Author(s):  
Shuang QIN ◽  
Gang FENG ◽  
Wenyi QIN ◽  
Yu GE ◽  
Jaya Shankar PATHMASUNTHARAM
Keyword(s):  
Performance Evaluation ◽  
Data Transmission ◽  
Delay Tolerant Networks ◽  
Delay Tolerant ◽  
Evaluation Of Data
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