A better understanding of device and circuit interactions is needed to develop optimum power electronic systems. There is a critical need to perform careful trade-off among performance and reliability parameters of devices and circuits. In our research, extensive measurements and rigorous finite element numerical analysis tools are employed to study device performance in power switching circuits. This information is used for device design, failure analysis, and system optimization. In the analysis and design of a resonant converter, the usual procedure is to derive the control characteristics of the converter based on the steady response of a sequence of circuit modes.
Resonant converters have diverse topologies.
It is important to derive a means to classify various converter topologies so that unique features of each topology may be identified. Such classification also enhances the search for new topologies. The continuation of this effort is part of the ongoing research. In off-line power supplies, the input line current pollution in terms of harmonic content and displacement factor are among the major concerns. Power factor preregulation is usually used to shape the current waveform in such a way that it represents a scaled replica of the line voltage.