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On-board power systems of large aircraft are moving from constant frequency (CF) AC to variable frequency (VF) AC systems or a hybrid system configuration. Replacing CF AC systems by VF AC systems will reduce system weight, volume, costs; and improve overall system efficiency. A future VF-power system architecture is presented. Optimal system configuration is developed based on the cost index minimization...
A novel two-side cooling for integrated power modules (IPMs) for improved compactness and capability for elevated temperature operations is presented. This approach applies and improves off-the-shelf products of IPM without significantly changing original packaging and fabrication process. It can reduce a device's p-n junction-temperature rise by 20% at an equivalent load, thus increasing operating...
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