scholarly journals Analyzing Temperature Rise and Fluid Flow of High-Power-Density and High-Voltage Induction Motor in the Starting Process

IEEE Access ◽  
2019 ◽  
Vol 7 ◽  
pp. 35588-35595 ◽  
Author(s):  
Yunyan Xia ◽  
Yongsen Han ◽  
Yongming Xu ◽  
Mengmeng Ai
Keyword(s):  
Fluid Flow ◽  
Induction Motor ◽  
Power Density ◽  
High Voltage ◽  
High Power ◽  
Temperature Rise ◽  
High Power Density ◽  
Starting Process

A High Power Density, High Voltage Power Supply For A Pulsed Radar System

2005 ◽  
Author(s):  
E.E. Bowles ◽  
S. Chapelle ◽  
G.X. Ferguson ◽  
D.S. Furuno ◽  
M. Marietta
Keyword(s):  
Power Density ◽  
High Voltage ◽  
High Power ◽  
Power Supply ◽  
Radar System ◽  
High Power Density ◽  
High Voltage Power Supply

Numerical Simulation of Heat Transfer and Fluid Flow of a Flat-Tube High Power Density Solid Oxide Fuel Cell

2004 ◽  
Vol 2 (1) ◽  
pp. 65-69 ◽  
Author(s):  
Yixin Lu ◽  
Laura Schaefer ◽  
Peiwen Li
Keyword(s):  
Heat Transfer ◽  
Fluid Flow ◽  
Fuel Cell ◽  
Solid Oxide Fuel Cell ◽  
Power Density ◽  
High Power ◽  
Solid Oxide ◽  
High Power Density ◽  
Oxide Fuel ◽  
Flat Tube

To both increase the power density of a tubular solid oxide fuel cell (SOFC) and maintain its beneficial feature of secure sealing, a flat-tube high power density (HPD) solid oxide fuel cell is under development by Siemens Westinghouse, based on their formerly developed tubular model. In this paper, a three dimensional numerical model to simulate the steady state heat transfer and fluid flow of a flat-tube HPD–SOFC is developed. A computer code is programmed using the FORTRAN language to solve the governing equations for continuity, momentum, and energy conservation. The highly coupled temperature and flow fields of the air stream and the fuel stream inside and outside a typical channel of a one-rib flat-tube HPD–SOFC are investigated. This heat transfer and fluid flow results will be used to simulate the overall performance of a flat-tube HPD–SOFC in the near future, and to help optimize the design and operation of a SOFC stack in practical applications.

DBC Switch Module for Management of Temperature and Noise in 220-W/in3 Power Assembly

2014 ◽  
Vol 2014 (1) ◽  
pp. 000744-000750 ◽  
Author(s):  
Woochan Kim ◽  
Jongwon Shin ◽  
Khai D. T. Ngo
Keyword(s):  
Power Density ◽  
High Power ◽  
Temperature Rise ◽  
Junction Temperature ◽  
High Power Density ◽  
Switching Noise ◽  
Turn On ◽  
The Right ◽  
Negative Coupling ◽  
Switch Module

Achieving high power density is a challenge in the presence of stringent specifications on temperature rise and switching noise. Integration of the DBC module with PCB mother board was found to be the right approach to achieve 220-W/in3 power density, 2-kW output power, and 48.9°C junction-temperature rise. The reduced layout inductance (2.89-nH) at the source and the negative coupling between source and drain layout inductances suppressed turn-off noise. The prototyped dc-dc boost converter switched between 400 kHz to 1 MHz without self-turn-on problems and efficiency was 98.4 % by employing DBC switch module.

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