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Simulation models of SiC power transistors (normally on/ off SiC JFET, SiC MOSFET) are developed by means of data driven modeling with consideration of thermal effects. Temperature effects on electrical characteristics of SiC power devices are obtained from simulations and tests of static and dynamic characteristics, which solve the problem of no consideration on temperature effects when comparing...
This paper reports the design, simulation work and test results of a 150W Ku-band continuous wave space Traveling Wave Tube (TWT), which is fulfilled at the Institute of Electronics, Chinese Academy of Sciences. The double-anode gun, helix pitch-tapering slow wave structure, non-axisymmetric four-stage depressed collector and radiation-cooled radiator are used in this TWT. The test results indicate...
A data driven model with thermal effects is proposed for normally-off SiC JFET in this paper. The novel feature of the model is that it saves the trouble of obtaining the physical parameters. Besides, the effect of temperature on SiC JFET performance is taken into account. It is important because the physical parameters on materials and dimensions of a particular SiC JFET device are difficult to be...
A data driven model with thermal effects is proposed for normally-off SiC JFET in this paper. The novel feature of the model is that this modeling method saves the trouble of obtaining the physical parameters and the temperature of SiC JFET is taken into account. These are particularly important because the device's physical parameters on materials and dimensions are hardly to be obtained and temperature...
The application of the reverse osmosis (RO) and nano-filtration (NF) membranes in the ammonia nitrogen separation of paraquat wastewater was studied. The parameters of membrane flux, operating pressure, concentration and pH, and temperature etc, which affect membrane separation performance were investigated. The results showed that the rejection rate of the ammonia nitrogen were 37% and 65%, the removal...
In order to solve the problem of temperature measurement applied to hot metal of the blast furnace under smoggy and dusty environment, an optical and electronic integration sensor which is passable ray and airtight cavity by sheet iron was devised. Based on the sensor, a portable thermometer was designed and made. The detection for temperature of hot metal with the technology has characteristics of...
The dedicated lubricating system is used to supply lubricants for large equipments in metallurgical industry. The traditional lubrication system easily leads to lubrication failure for unreasonable design and poor management. A new lubrication system adopting distributed architecture is introduced in this paper. In distributed lubrication system, parameters of oil pressure, flow and temperature are...
PEMFC has being applied more and more in automobile and distributed generation for its low corrosion, low-temperature operation and environment-friendship a complex systems and it is expensive. It should be concerned over the control and maintenance of its auxiliary equipments, placement site, restoring of hydrogen and the other when real PEMFC is used. However, PEMFC's volt/ampere external characteristics...
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