Parasitic parameter analysis is the focus of intelligent power module switch performance research. This paper will utilize the model of 600V/30A intelligent power module and extract the part of circuit layout bonding wires parasitic parameter by Ansys Q3D Extractor, expedition the relationship between physical bonding parameter and parasitic parameter in the intelligent power module circuit. An exact three-phase circuit module of high voltage intelligent power module and bonding wires package module is established. Through Ansys Q3D Extractor, test a series of bonding parameters from the three-phase circuit layout module and extract the parasitic parameters of the bonding wires. The experimental results of the parasitic parameters are analysed and compared, and the influence degree of the bonding parameters on the parasitic parameters is discussed. An improved solution is proposed for the bonding wires of the intelligent power module to reduce the voltage spike that the MOSFET chip during the turn-off process.
Coal gasification coarse cinder (CGCC) is the main waste in the coal gasification industry, containing low calorific value but high heavy metal residuals. To achieve environmental toxicity stabilization and waste recycling, we developed a manufacturing method of multiple-functional ceramsite from CGCC by pelletizing and sintering. By altering key parameters during the manufacturing process (including CGCC content, sintering temperature, and time), the physical properties and leaching toxicity of ceramsite were evaluated. Sintering temperature was identified with a significantly positive relationship with ceramsite's compressive strength, whereas CGCC content was negatively correlated with water adsorption. The highest compressive strength (24.00 MPa) and relatively lower water absorption (21.36%) was achieved at 50% CGCC content and 1,150ºC sintering for 30 min. The toxicity tests showed acceptable leaching heavy metals with minimal environmental impact. Considering the energy conservation and the maximal recycling of CGCC, optimal ceramsite manufacturing is suggested as 50% CGCC content and 1,150ºC/10 min sintering temperature/time. Our results indicated that multiple-functional ceramsite manufacturing is a low-cost and environmentally friendly approach for CGCC recycling.
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