Non-Isolated high step-up dc-dc converter based on boost converter elements
Corressponding author's email:
tridd@hcmute.edu.vnKeywords:
Non-isolated, High step-up, Flyback converter, Voltage stress, Boost converterAbstract
Many of these conventional DC-DC converters have the disadvantages of operating at high duty-cycle, high switch voltage stress, and high diode peak current. The conventional boost high step-up converter can provide very high voltage gain without operating at high duty-cycle by employing an addition switched, an inductor, a capacitor, and a diode. Non-isolated high step-up converter overcomes the drawback of the conventional boost converter. In this converter, a high step-up conversion ratio and distributed voltage stress can be achieved and reduce reverse recovery on diodes. Based on a conventional quadratics boost converter, the derived converter satisfies all there feature. The operational principle and characteristics of the proposed converter are presented and verified experimentally with a 1.6 kW of power, 290 V input voltage, and 350 V output voltage prototype converter.
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