Atlas of the medium frequency waves in the ion-electron two-fluid plasma
Sign Up to like & getrecommendations! Published in 2019 at "Physics of Plasmas"
DOI: 10.1063/1.5110991
Abstract: Medium-frequency waves in the ion-electron two-fluid plasma with frequencies between the electron gyrofrequency and the ion gyrofrequency are studied. The dispersion relations and the Friedrichs diagrams of the group velocities are plotted with color-coded electric-field… read more here.
Keywords: frequency; velocity; group; dynamic spectra ... See more keywords
Phase Estimation of Single Tones Next to Modulated Signals in the Medium Frequency R-Mode System
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DOI: 10.1109/access.2022.3190544
Abstract: Position, navigation, and timing information are critical to today’s infrastructures; as a result, the possibility of estimating ranges is being explored in more and more radio systems. One way to achieve this is to extend… read more here.
Keywords: phase estimation; medium frequency; phase; estimation ... See more keywords
Copper Pipes as Medium Frequency Transformer Windings
Sign Up to like & getrecommendations! Published in 2022 at "IEEE Access"
DOI: 10.1109/access.2022.3214651
Abstract: Owing to increasing power demand, new technologies, such as solid-state transformers, are progressively researched and improved. Thereby, galvanic isolation and voltage adaptation are achieved by medium frequency transformers. To reach high power density designs, transformer… read more here.
Keywords: frequency transformer; frequency; copper pipes; medium frequency ... See more keywords
Comparison Between Numerical and Analytical Methods of AC Resistance Evaluation for Medium-Frequency Transformers: Validation on a Prototype and Thermal Impact Analysis
Sign Up to like & getrecommendations! Published in 2017 at "Canadian Journal of Electrical and Computer Engineering"
DOI: 10.1109/cjece.2016.2594118
Abstract: In the future, medium-frequency transformers (with a frequency range of 5–100 kHz) will be major components in dc–dc converter applications, for both medium-voltage direct current and high-voltage direct current networks. Importantly, the corresponding power losses… read more here.
Keywords: medium; prototype; resistance; frequency transformers ... See more keywords
Design and Experimental Analysis of a Medium-Frequency Transformer for Solid-State Transformer Applications
Sign Up to like & getrecommendations! Published in 2017 at "IEEE Journal of Emerging and Selected Topics in Power Electronics"
DOI: 10.1109/jestpe.2016.2623679
Abstract: Within a solid-state transformer, the isolated dc–dc converter and in particular its medium-frequency transformer are one of the critical components, as it provides the required isolation between primary and secondary sides and the voltage conversion… read more here.
Keywords: solid state; frequency transformer; transformer; state transformer ... See more keywords
The Effects of PWM with High dv/dt on Partial Discharge and Lifetime of Medium-Frequency Transformer for Medium-Voltage (MV) Solid State Transformer Applications
Sign Up to like & getrecommendations! Published in 2022 at "IEEE Transactions on Industrial Electronics"
DOI: 10.1109/tie.2022.3174243
Abstract: Medium-frequency (MF) transformer in a phase-shift modulated dc solid state transformer (SST) is prone to partial discharge (PD) that impacts the system reliability and lifetime. Tightly packed MF transformer windings carrying PWM voltages create favorable… read more here.
Keywords: state; medium frequency; lifetime; medium ... See more keywords
Sensitivity Analysis of Medium-Frequency Transformer Designs for Solid-State Transformers
Sign Up to like & getrecommendations! Published in 2019 at "IEEE Transactions on Power Electronics"
DOI: 10.1109/tpel.2018.2883390
Abstract: This paper discusses the technical challenges and tradeoffs tied to design of medium-frequency transformers for medium-voltage high-power applications and emerging solid-state transformers. A dedicated design optimization algorithm is used to generate the set of all… read more here.
Keywords: transformer; medium frequency; state; solid state ... See more keywords
Nanocrystalline and Silicon Steel Medium-Frequency Transformers Applied to DC-DC Converters: Analysis and Experimental Comparison
Sign Up to like & getrecommendations! Published in 2019 at "Energies"
DOI: 10.3390/en12112062
Abstract: High performance, highly efficient DC-DC converters play a key role in improving the penetration of renewable energy sources in the context of smart grids in applications such as solid-state transformers, built-in power drives in electric… read more here.
Keywords: medium frequency; silicon steel; nanocrystalline silicon; frequency transformers ... See more keywords
Medium-Frequency Electrical Resistance Sintering of Oxidized C.P. Iron Powder
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DOI: 10.3390/met8060426
Abstract: Commercially pure (C.P.) iron powders with a deliberate high degree of oxidation were consolidated by medium-frequency electrical resistance sintering (MF-ERS). This is a consolidation technique where pressure, and heat coming from a low-voltage and high-intensity… read more here.
Keywords: powder; resistance; frequency electrical; electrical resistance ... See more keywords