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In this paper, we present a comprehensive evaluation of the latest 600 V class Gallium Nitride based Gate Injection Transistor (GaN-GIT) for high temperature and high efficiency applications. In this study, the Panasonic GITs are used as the reference for latest GaN-GIT technology. Static and dynamic testing was performed on the two GaN-GIT versions to extract critical static parameters and switching...
This work focuses on the development of integrated front side film stack containing a-p Si:H film as the emitter and ITO film as the carrier collection layer in n-type silicon heterojunction (SHJ) solar cells. Doping concentration and thickness of a-p Si:H films, and O2/Ar flow ratio of DC sputtered ITO films were varied to obtain optimal single layer properties. A combined ITO/double a-p Si:H stack...
Virtual metrology (VM) is the prediction of end-of-batch properties (i.e., metrology data) using process variables and other information available for the process and/or the product (i.e., machine data) without physically conducting property measurement. VM (sometimes augmented with existing metrology) has been utilized in semiconductor process monitoring and control. Besides the economic benefit...
SiCp/Cu composites were fabricated by the dual-directional extrusion process of the floating die. The microstructure, wear behavior and conductivity of SiCp/Cu composites were studied by optical microscope, abrasion test and current conductivity instrument. The results show that the SiCp/Cu composites with SiC particle distributed uniformly can be obtained, and the conductivity of composites decreased...
In applications where batteries work together with power electronic circuits, the current ripple generated by the power electronics will be shared by both the battery and passive components in the circuit. The amount of ripple absorbed by the battery depends on its impedance at the switching frequency of power electronics. This paper presents an impedance based high frequency battery model derived...
The elliptical tube with rectangular plate fin, which is usually called double row tube, is one kind of basic heat exchange element for direct air cooled condensers. The research on the flow and heat transfer performance outside double row tube is of great important for the optimal design and safe operation of air cooled condensers. Under different frontal wind velocity, the 3 dimensional airside...
Basing on the application of the dynamic batteries, the on-line resistance of nickel metal hydride batteries is calculated by using a statistical method in the article. By the comparison of statistics resistance and pulse resistance at different points of SOC (state of charge), the validity of the statistical method for the resistance of nickel matel hydride power battery is studied. Through the experiment,it...
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