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This paper presents the synthetic design of the transformer in flyback switching AC-DC converters. Firstly, the maximal power transferred by a standard size magnetic core such as EE-20 or EE-25 is theoretically determined. To obtain accurate analysis, a method based on the nonlinear finite element analysis (FEA) of electromagnetic field is employed. Secondly, from the view of reducing the maximal...
This paper analyzes the maximal power loss in the output diode of flyback switching converter operating in both continuous conducting mode (CCM) and discontinuous conducting mode (DCM). Comparing with the previous work, this paper extends the condition, under which the maximal power loss of the output diode occurs, from the CCM to the DCM. Three correlative tasks are included. Firstly, through an...
During the development of a high power DC-DC converter for a fuel cell vehicle (FCV), we found that the current spikes through the switch devices are too high to gain the high power. On the compact demand of the FCV, the only way is to alter the parameters of components inside the box. The distributed capacitance and inductance of the transformer were adjusted by changing the winding way, the current...
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