A new structure of Y-source inverters with continous input current and high voltage gain

In this paper a novel Y-source inverter is introduced. The introduced inverter-like all Z-source inverters has the ability to reduce the level of voltage. Besides, it uses an extra winding to reinforce and increase the gain of output voltage. In contrast to other topologies, this inverter has high gain and also resolves discontinuity of the input current in Z-source inverters. The obtained gain can be regulated by changing the turn ration of windings

Hybrid impedance network-based converter with high voltage gain and no commutation problem

In this paper, a new hybrid converter based of Z-source DC/DC converter with common ground is introduced. The proposed converter can supply ac and dc loads simultaneously or individually (stand-alone ac or dc loads). Also, the commutation problem of its counterpart has been solved in this topology. The proposed hybrid converter is analyzed mathematically and then validated by simulation in three different possible modes: only dc load in service, only ac load in service and both ac and dc loads in service

A Comparative Study on PFC Bridgeless Flyback and SEPIC AC-DC Rectifiers Operating in DCM and BCM

This paper presents a comparative study on the power factor corrector bridgeless SEPIC and Flyback ac-dc rectifier. First, a new SEPIC-based topology is proposed based on the existing Flyback topologies to remove the need of the input filter due to the existence of the input inductor in the SEPIC circuit. Then, both converters are analyzed and compared when operating in DCM and BCM, to evaluate the benefits of operating in BCM such as lower current stress on the switches and output diodes and hence lower conductive losses

Novel high step up DC/DC converters with reduced switch voltage stress

In this paper, a novel step up DC/DC converter with reduced switch voltage stress is introduced firstly. The proposed converter is analyzed in steady state and is compared with other DC/DC converters with equal number of components. The voltage stress on all switches is lower than the output voltage. Then, it is shown that the voltage transfer gain can be increased considerable by replacing one of its inductor with two types of switched inductor voltage multiplier cell. Therefore, high step up switched inductor DC/DC converters are realized. The operations of the proposed converters are verified using the simulation result