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This paper presents an LED lighting system with a PV source. The circuit structure of the proposed system adopts buck converter combined with forward converter. In this research, buck converter is used as a charger for charging battery, and forward converter with active clamp circuit , which can recover leakage inductor energy and reset magnetizing energy stored in the transformer, is adopted to drive...
A novel multi-frequency transformer is developed based on dual frequency transformer reported recently. Different from dual frequency transformer, which has two steep poles, the return loss curve of the transformer developed in this paper has one steep pole with two gentle side poles. This transformer can achieve ultra-wideband because it makes use of big separation ratio between center frequencies...
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