A high gain quadruple flyboost converter for high voltage applications

This paper demonstrates an alternative of flyboost converter to achieve a high-voltage high power direct current power supply with a gain more than 10. The proposed flyboost converter in this paper composed with a conventional boost converter and quadruple flyback converter, which generated energy from a boost inductor during an off time period. Thus, the higher-gain of boost converter can be achieved by the summation of output voltage, both boost and quadruple flyback converter. Circuit configurations, basic principle operations, mathematics analysis, design considerations and testing results of the proposed quadruple flyboost converter were described in detail. Finally, the results of a 20-30V input, 320V 100W output switched at 150 kHz flyboost converter, which was designed in this paper, showed the effectiveness of the converter was 83.34% and 3.56% of voltage regulation with the gain of 16 respectively.