In this paper, KY converter and voltage gain enhanced KY converter are included. A KY converter is a voltage step up converter, it can be considered as a buck converter along with synchronous rectification. In general, a KY converter consists of two MOSFET switches. To obtain higher voltage gain we can adopt different methods. Some of these techniques, advantages and disadvantages of each metho...

This paper presents a transformer less ac/dc converter which can be used in voltages between 90230 Vrms. Instead of a transformer, this topology consists of a buck dc/dc converter and a buck boost dc/dc converter. By the absence of transformer, reduce the complexity of converter and it is cost effective. Buck dc/dc converter keeps o/p voltage below the line voltage; limit the leakage current. B...

This paper compares the expense of power semiconductors and passive components of a (2.3 kV, 2.4 MVA) two-level, three-level. the THD of the seven level output voltage are analysed. The circuit diagram of conventional interleaved boost converter is shown in Fig.1. Fig. 1 Circuit Diagram. Please provide the circuit diagram. Thank you. The Design A simple layout for the proposed temperature to vo...

D1 D2 S2 Abstract—This paper proposes two types of non-isolated direct AC-DC converters. First, it shows a buck-boost converter with an H-bridge, which requires few components (three switches, two diodes, one inductor and one capacitor) to convert AC input to DC output directly. This circuit can handle a wide range of output voltage. Second, a direct AC-DC buck converter is proposed for lower o...

This proposal proposes a DC/DC Buck Boost converter which has been used as a smooth starter for a DC Permanent Magnet Motor. In the existing system the DC/DC Buck Converter is used which provide the output less than the input Signal. Using buck converter it is difficult to increase the value of the input signal. Hence DC/DC BuckBoost Converter used from which it is possible to get both the incr...

Energy-efficient, linear RF power amplifiers (PAs) are critical for achieving longer battery life in state-of-the-art radio transceivers because typically they determine and dominate the power consumption of the system. In this paper, an adaptive power management scheme using a novel dual-mode, noninverting, buck-boost converter targeted for code-division-multiple-access (CDMA) RF PA is present...

Solid-state switch-mode rectification converters have reached a matured level for improving power quality in terms of power-factor correction (PFC), reduced total harmonic distortion at input ac mains and precisely regulated dc output in buck, boost, buck–boost and multilevel modes with unidirectional and bidirectional power flow. In this paper, an improved power quality converter employing con...

The paper presents a new methodology for optimizing the design of DC-DC converters. The magnitudes that we take into account are efficiency, ripples, bandwidth, and RHP zero placement. We apply a geometric programming approach, because the variables are positives and the constraints can be expressed in a posynomial form. This approach has all the advantages of convex optimization. We apply the ...

Renewable energy sources are being widely used for Distributed Generation (fuel cells, solar panels, Wind power generators etc..,) because of their advantages. But they produce a very low output voltage. To interconnect a low-dc-voltage to residential loads a special voltage matching converter is required. This paper presents a back to back connection of cascaded quasi-Z-source network based st...

Due to ready availability of resources, there is a vast spike in the growth of sustainable power sources. Among them solar photovoltaic (PV) world power technique is presently careful, being an of great magnitude substitute influence supplier, for the reason that of the set availability of eminent able PV panels with the aim of eliminate the depressing environmental aspects. Low voltage PV syst...