High efficiency power converter with SiC power MOSFETs for pulsed power applications

Silicon Carbide (SiC) is a promising new material for high power high temperature electronics applications. SiC Schottky diodes are already finding wide acceptance in designing high efficiency power electronic systems. We present TCAD and Verilog-A based modeling of SiC DMOSFET, and the design and analysis of a medium power DC-DC converter designed using SiC power DMOSFETs and SiC Schottky diodes. The system is designed as a 300W boost converter with a 12V input and 24V/36V outputs. The SiC power converter is compared to another designed with commercially available Silicon power devices to evaluate power dissipation in the DMOSFETs, transient response of the system and its conversion efficiency. SiC DMOSFETs are characterized at high temperature by developing temperature dependent TCAD and Verilog-A models for the device. Detailed TCAD modeling allows probing inside the device for understanding the physical processes of transport, whereas Verilog-A modeling allows us to define the complex relationship of interface traps and surface physics that is typical to SiC DMOSFETs in a compact analytical format that is suitable for inclusion in commercially available circuit simulators.

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High-Efficiency Bi-Directional Single-Phase AC/DC Converter Design and Field Application for LVDC Distribution

Energies ◽

10.3390/en12112191 ◽

2019 ◽

Vol 12 (11) ◽

pp. 2191 ◽

Cited By ~ 1

Author(s):

Juyong Kim ◽

Hongjoo Kim ◽

Jintae Cho ◽

Youngpyo Cho

Keyword(s):

Distribution System ◽

Single Phase ◽

High Efficiency ◽

Low Voltage ◽

Control Function ◽

High Reliability ◽

Power Converter ◽

Field Application ◽

Distribution Grid ◽

Demonstration Site

This paper describes the design and field application of a high-efficiency single-phase AC/DC converter that is suitable for distribution lines. First, an appropriate AC/DC converter was designed in consideration of the environment of the application system. In order to ensure high efficiency and high reliability, we designed an optimum switching element and capacitor suitable for the converter, and the protection element of the AC/DC converter was designed based on these elements. The control function for the power converter suitable for an LVDC distribution system is proposed for highly reliable operation. The AC/DC converter was manufactured based on the design and its performance was verified during application in an actual low-voltage DC (LVDC) distribution grid through tests at the demonstration site. The application to a DC distribution system in an actual grid is very rare and it is expected that it will contribute to the expansion of LVDC distribution.

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High Efficiency Injectorless Quantum Cascade Lasers Emitting at 8.8 $\mu$m With 2-W Peak Pulsed Power per Facet at Room Temperature

IEEE Photonics Technology Letters ◽

10.1109/lpt.2010.2086390 ◽

2010 ◽

Vol 22 (24) ◽

pp. 1811-1813 ◽

Cited By ~ 11

Author(s):

H. Li ◽

Simeon Katz ◽

Augustinas Vizbaras ◽

Gehard Boehm ◽

Markus-Christian Amann

Keyword(s):

Room Temperature ◽

High Efficiency ◽

Quantum Cascade Lasers ◽

Pulsed Power ◽

Quantum Cascade ◽

Cascade Lasers

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Control development for an 18 MW pulsed power converter using a real-time simulation platform

2015 17th European Conference on Power Electronics and Applications (EPE'15 ECCE-Europe) ◽

10.1109/epe.2015.7309258 ◽

2015 ◽

Cited By ~ 1

Author(s):

Charles-Mathieu Genton ◽

Stefano Rocca ◽

Fulvio Boattini

Keyword(s):

Real Time ◽

Power Converter ◽

Pulsed Power ◽

Simulation Platform ◽

Real Time Simulation ◽

Time Simulation

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Research on Switch Linearity Hybrid Power Converter

Applied Mechanics and Materials ◽

10.4028/www.scientific.net/amm.336-338.1161 ◽

2013 ◽

Vol 336-338 ◽

pp. 1161-1164

Author(s):

Wen Hua Hu

Keyword(s):

High Efficiency ◽

Power Converter ◽

Experimental Results ◽

Hybrid Power ◽

Load Disturbance ◽

Linear Load ◽

Non Linear ◽

Voltage Follower ◽

Filter Unit ◽

Non Linear Load

This paper introduced a voltage follower type of supply hybridized by the switch filter unit with the linear unit, analyzed the principle of the composing, the topology of Switch Linearity Hybrid (SLH) power converter. Theory analyses, simulation and experimental results showed that the SLH power converter possess the character of high efficiency, low THD, the capacity suitable to varied kinds of loads (including non-linear load) and resisting load disturbance.

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