Direct single‐phase isolated improved gamma Z‐source AC–AC converter suitable for DVR application
A direct single‐phase isolated improved gamma Z‐source AC–AC converter is designed and manufactured in proposed paper. This converter contains an impedance source structure and its advantages. In general, these advantages are as follows.
Alireza Razavi Majarshin +2 more
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Stirling Convertor Extended Operation Testing and Data Analysis at Glenn Research Center [PDF]
Extended operation of Stirling convertors is essential to the development of radioisotope power systems and their potential use for longduration missions.
Cornell, Peggy A. +3 more
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This paper proposed a new two‐phase high step‐down DC–DC converter is proposed. This converter is derived from the two‐phase series‐capacitor converter. The proposed converter replaces the series capacitor with a new structure that integrates Valley‐Fill
Ahmad Ghamsari Esfahani, Ehsan Adib
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An adaptive synchronous rectifier driving strategy for unregulated LLC resonant converter
LLC resonant converters are widely adopted in many different industrial applications due to their high efficiency operation. To further improve LLC resonant converters' efficiency, the secondary unregulated diode rectifier is replaced by the synchronous ...
Yuqi Wei, Ziang Li, Jinjun Liu
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New multilevel inverter based on reduced switch basic cell for high voltage levels
In this study, to solve total harmonic distortion (THD) and voltage stress on switches, challenges have been made by presenting a new multi‐level inverter (MLI). The proposed topology can operate with both symmetric and asymmetric sources.
Ali Seifi +3 more
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Test Results From a Pair of 1-kWe Dual-Opposed Free-Piston Stirling Power Convertors Integrated With a Pumped NaK Loop [PDF]
As a step towards development of Stirling power conversion for potential use in Fission Surface Power (FSP) systems, a pair of commercially available 1-kW-class free-piston Stirling convertors were modified to operate with a NaK (sodium (Na) and ...
Briggs, Maxwell H. +4 more
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Two- and Three-dimensional High Performance, Patterned Overlay Multi-chip Module Technology [PDF]
A two- and three-dimensional multi-chip module technology was developed in response to the continuum in demand for increased performance in electronic systems, as well as the desire to reduce the size, weight, and power of space systems. Though developed
Lyke, James
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Programmable data acquisition system for research measurements from meteorological radiosondes [PDF]
A programmable data acquisition system to allow novel use of meteorological radiosondes for atmospheric science measurements is described. In its basic form it supports four analogue inputs at 16 bit resolution, and up to two further inputs at lower ...
Harrison, Giles +2 more
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Multilevel inverters (MLIs) are gaining attention in numerous applications due to their better performance attributes. Still, their utility in long‐run applications remains a critical concern due to the reliability issues.
Daki Krishnachaitanya +3 more
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Advanced Stirling Convertor Testing at NASA Glenn Research Center [PDF]
The NASA Glenn Research Center (GRC) has been testing high-efficiency free-piston Stirling convertors for potential use in radioisotope power systems (RPSs) since 1999.
Poriti, Sal, Wilson, Scott D.
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