The main purpose of this paper is the development a DC/DC boost converter with high conversion efficiency. proposed has step-up ratio and equipped soft-switching technology. inductor used in developed coupled rather than general inductor, therefore, voltage can be improved, so that characteristics power switch obtained within same duty cycle. connected to resonance branch circuit traditional co...

High step-up ratio DC-DC converters with megawatt ratings are of interest in wind turbine interfaces and high-voltage direct-current systems. The modular multilevel DC-DC converter based on the standard boost converter topology but with the normal single switches replaced by a number of capacitor-clamped sub-modules. The converter is operated in resonant mode with resonance between sub-module c...

This paper presents implementations of a nonisolated, high voltage gain DC-DC converter. High voltage gain is achieved due to inclusion of resonance and transformer in the circuit. The performance of this converter is compared with two similar topologies namely coupled inductor-switched capacitor step-up converter and coupled inductor step-up converter. The proposed prototype is designed using ...

A new high step-up dc/dc converter is presented for renewable energy applications. The construction implementation of a dual inductor and more than one voltage multiplier cells, to obtain large step-up voltage gain, two capacitors has been placed charged during the switch-off period, energy accumulated in the dual inductor which increases the voltage gain. The MMF energy in the leakage inductan...

In this paper, an integrated three-voltage-booster DC-DC (direct current to direct current) converter is proposed to achieve high voltage gain for renewable-energy generation systems. The proposed converter integrates three voltage-boosters into one power stage, which is composed of an active switch, a coupled-inductor, five diodes, and five capacitors. As compared with conventional high step-u...

High Output Voltage Based Multiphase Step-Up DC-DC Converter topology with voltage doubler rectifiers is presented in this paper. High output voltage is obtained due to the series combination of voltage doubler rectifiers on the secondary side of high frequency transformers. This topology is useful in the application where the output voltage is greater than the input. The two loop control strat...

This paper presents a new soft switching flyback-forward PWM converter. The proposed circuit employs an auxiliary circuit to achieve soft switching condition for switches and also absorbs the voltage spikes caused by the leakage inductance of transformers in the converter. In the proposed converter main switch operates at ZVS and the auxiliary switch operates at ZCS. The proposed converter has ...

In signal processing circuits of a RDIF tag, the relaxation of restriction concerning operating voltage range enables us to develop various applications. In order to provide higher voltage to the signal processing circuit, two types of step-up AC-DC converters for RFID tags are proposed in this paper: the step-up converter and the step-up converter. To reduce ripple noise of output voltage, the...