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In this a paper a novel CMOS technology friendly opamp compensation has been presented and explained intuitively miller compensation pole splitting. Present technique utilizes grounded capacitor and having better PSRR. Open loop transfer functions have been derived to show the proposed technique is low power for the same bandwidth. Implemented in 65nm CMOS technology and simulated with Spectre. Simulation...
The objective of this paper is to discuss the compact hardware developed for energy systems with small footprint and high efficiency for the microcontroller based applications. This incorporates designing of the super capacitor based power supply that can be deployed at remote area to acquire physical phenomenon. The system, a combination of solar panel and super capacitor, ensures continuous supply...
The central idea of this paper is to show the prospect of RF energy harvesting and converting the energy into DC, utilizing the reasonable power obtained, for low power device applications. The system harvests energy from various frequencies available in the spectrum band. The first part introduces some of the disadvantages of larger antenna height in KHz and higher path loss in GHz band of frequencies...
In this paper presents the advantages of transformer less in solar based inveter in terms of size, weight and losses. The parasitic capacitance between galvanic between PV module and grid. This paper presents two new schemes, namely high efficiency transformer less sep cuk inverter topology and interleaved boost converter topology. The ZVT based interleaved boost converter is utilized at power processing...
In this paper a modified Zeta converter is proposed with replacement of conventional PI controller with fuzzy control for robust and reduced output stabilization time. The Zeta converter is one of the best PFC converters with very less DC voltage output ripple. The input is fed with a single phase AC source with maintained power factor at unity during the conversion process. The performance and analysis...
Efficient generation of power at present is crucial as wastage of power is a global concern. Power factor measures a system's power efficiency and is an important aspect in improving the quality of supply. In most power systems, a poor power factor resulting from an increasing use of inductive loads is often overlooked. A power factor correction unit would allow the system to restore its power factor...
The Z-source concept has many advantages it can be applied for any type of power conditioning system this paper propose a Z-source based three level inverter system for the photo-voltaic array or system. A comparison of traditional system and new Z source three level inverter configuration is performed. In this paper present the SPWM technique for controlling the neutral clamped three level inverter...
In this proposed work a basic unit is developed. A single unit can generate two positive and a zero level at the output. As this basic unit can develop positive levels, for negative levels, H-bridge is in addition connected to it. This is advance cascaded H-bridge multi-level inverter. With this it is possible to generate all output levels i.e. positive, zero and negative level. Also in this paper...
Z-Source inverter has become main aspect for buck and boost inversion, where the boost gain is limited due to more component voltage sag and swell are high. To avoid these new quasi resonant inverter called Switched-coupled-inductor quasi Z-Source Inverter (SCL-qZSI) is introduced. This SCL-qZSI adds one capacitor, coupled inductor and two diodes compare to traditional qZSI. Switching stress can be...
Distributed generation (DG), is being increasingly adapted in distribution network. The advantages of placing DG in the distribution network are loss reduction, backup power supply, and real, reactive power management increase reliability of the network. In this paper Cuckoo Search Algorithm (CSA) has been adapted for optimal sizing and placement of DG for loss minimization Comparisons are made between...
Back to back (B2B) voltage source converter is used for HVDC system and ac drive system to control active-reactive power. In this paper reduced switch back to back converter is used for induction motor drive system which is operated in unity as well as leading power factor. Active and reactive power flow are independently controlled. The active power transfer is controlled by angle delta; where delta...
Energy can be transformed from one form to another form and can also be stored. Electrical energy can be generated, distributed and can be stored using batteries. This project describes a method of charging a 12V battery with constant output voltage and variable input voltage using Buck-Boost topology. The variation in duty cycle of MOSFET will provide variation in output voltage. The error in output...
A multiple input non-isolated DC-DC converter with improved reliability is presented in this paper. The proposed converter can supply energy from storage and renewable energy sources independently to the load. It can work in buck, boost and buckboost modes depending on the operating conditions. It has the ability to maintain constant output voltage during transient conditions of load as well as source...
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