This paper proposes an AC/DC single-stage structure by integrating a boost topology and active clamp flyback (ACF) circuit with power-factor-correction (PFC) function. The PFC function can be achieved controlling operated in the discontinuous conduction mode. With coordination of clamping components, resonant technique is obtained zero-voltage-switching (ZVS) achieved. proposed converter combin...

This paper proposes an interleaved zero-voltage switching (ZVS) ultra-large gain converter. By implementing coupled-inductor (CI) and built-in transformer (BIT) together with a switched capacitor (SC) voltage multiplier cell (VMC), higher degree of flexibility is achieved for improvement step-up in comparison those which only one these magnetic devices utilised. Furthermore, the imposed across ...

This paper presents a ZVS PWM Half-Bridge Inverter with active voltage clamping technique using the reverse recovery energy of the diodes . The structure use only a single auxiliary switch and is particularly simple and robust. It is very attractive for single-phase high power applications. Switching losses are reduced due to implementation of the simple active snubber circuit, that provides ZV...

This paper presents a novel concept of high-voltage-gain DC-DC converter. The converter is made up switched capacitors and passive resonant branches. A significant reduction in the count switches low voltage stress on achieved this proposed topology, comparison to that classical SC series-parallel It essential from cost, volume, efficiency standpoint. threefold. highest depends output decreased...

1 This work is supported by NASA-STTR grant # NAS10-00005 AbstractA single-stage, ZVT-PWM, power factor correction converter is proposed in this paper. Zero-voltage switching for the main switch and zero-current switching for the auxiliary switch are realized by utilizing the leakage inductance of the output transformer and the capacitance of the switches. As a result, no additional resonant co...

Solid-state transformers (SSTs) are a promising solution photovoltaic (PV), wind, traction, data center, battery energy storage system (BESS), and fast charging electric vehicle (EV) applications. The traditional SSTs typically three-stage, i.e., hard-switching cascaded multilevel rectifiers inverters with dual active bridge (DAB) converters, which leads to bulky passives, low efficiency, high ...

The parallel interleaved three-phase inverters are suitable for high-power applications due to the current ripple canceling effect. power density and efficiency can be further improved with prediction (CRP) based high frequency zero-voltage switching (ZVS). However, variable increases rapidly as decrease, resulting in higher turn-off loss at light load despite elimination of turn-on loss. In th...

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...

Due to the advantages of power supply systems using DC distribution method, such as a conversion efficiency increase about 5–10%, cost reduction 15–20%, etc., AC will be replaced by in future. This paper adopts different converters generate system: DC/DC converter with PV arrays, factor correction utility line and full-bridge multiple input sources. With this approach, proposed soft-switching f...