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This paper presents a new technique for analyzing the conditions to which power semiconductor devices are subjected within practical inverters. A representative load cycle, which defines the inverter conditions, is used to estimate the switching conditions of the devices. Condition maps are generated, which allows the design and testing of the system to consider the more likely range of conditions. Estimates of temperature profiles can also be made to further improve the realism of such design. This promises to lead to the development of more realistic optimization procedures.
Date of Publication: July-aug. 2007