1 This work is supported by NSF (contract number NSF 99 608 03) Abstract-A single-stage power factor correction converter with soft-switching is proposed in this paper. Besides the ZVT turn-on performance of the main switch, the converter has ZCS for the auxiliary switch with an active snubber. High frequency operation of the proposed converter makes the ac-dc power supply possible to be minimi...

This paper presents the concept and results of a novel resonant DC-DC converter which achieves high voltage gain at low number utilized switches, stress on transistors, ZVS ZCS operation, efficiency variable gain. The uses switched-capacitors (SC) circuits with five switches allows it to reach six-fold By application adequate switching patterns, seven levels adjustment can be achieved. basic op...

Flexible supercapacitors (SCs) have become a popular research topic due to their extra-long service life, foldability, and wearability. Nevertheless, low energy density restricts applications. Here, we synthesized phosphorus-doped bimetallic sulfides embedded in heteroatom-doped (N, S, P) carbon shells (P-ZCS/HC) using simple approach create high-performance flexible electrodes. The three-dimen...

In this paper, a high step-up three-level DC–DC converter with symmetric structure for PV application is proposed. The has voltage gain. This achieved due to the use of two cells and resonant paths in its structure. low input current ripples stress across all switches equal half output voltage. proposed uses simple pulse–width modulation (PWM) trigger switches. Hence, benefits from control circ...