부산대학교 도서관

Composite converter architectures consist of several dissimilar partial-power processing modules, which are combined together to improve the overall system efficiency. Examples of known composite converters include input-series-output-parallel (ISOP) and input-parallel-output-series (IPOS) architectures. This paper shows how composite converter architectures can be constructed systematically by enumerating all possible incidence matrices that describe module interconnects. The procedure yields a total of seven valid composite converter architectures with two converter modules, in which at least one module is non-isolated. Four of these seven architectures represent novel composite converters. Moreover, a simple loss model is developed to evaluate these composite converter architectures over a wide range of conversion ratios. A re-configurable hardware prototype is built, and steady-state experimental waveforms are demonstrated for two novel architectures, which can have improved step-down or step-up conversion characteristics compared to the well-known ISOP or IPOS configurations.