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Various applications in the modern world require DC supply. Some applications needs low DC voltage and some require considerably high DC voltage. We get AC supply and that needs to be converted to DC for these applications. In this paper AC - DC step up and step down converters without the use of bridge rectification is dealt. In step up converter, low AC voltage micro generators are used and the...
Extracting as much as wind energy as possible and feeding the grid with high quality power are the two main targets for the grid connected wind turbine system. This paper proposes the design of an efficient controller for the 3.2KW wind turbine which grabs the maximum power from the available wind. The 3.2 KW wind turbine system provides a variable frequency AC voltage and this variable frequency...
In this paper, a high efficiency Soft-switching Boost Converter is proposed with a Simple Auxiliary Resonant Circuit (SARC), which is composed of an auxiliary switch, a diode, a resonant inductor, and a resonant capacitor. The Conventional Boost Converter decreases the efficiency because of Hard-switching, which generates losses when the switches are turned ON/OFF. During this interval, all switches...
Controlled-Capacitor-Charging (CCC) is a technique to synthesize a desired voltage profile at the output from the unregulated DC at the input. Earlier models of the Controlled-Capacitor-Charging type Inverters deals with the Single-Phase Inverter and the dynamic performance are not available. This paper deals with the performance of Capacitor-Charging-type Inverter. A simple technique to design the...
In this work, the Automatic Generation Control of an interconnected hydrothermal power system with a small capacity Capacitive Energy Storage augmented to both thermal and hydro area has been investigated. The effect of an integral controller as well as a PID controller whose gains are tuned by Genetic Algorithm technique has been examined and compared. The optimum values of the integral and PID controller...
The paper presents a novel methodology for optimal reactive power pricing in deregulated market. A new method is presented in this paper which aims to supply electricity to the consumer by the supplier in the most economically beneficial way. The objective function is formulated in terms of social welfare function, maximization of which results in the most economical generation and consumption. However...
A simplified current reference control for single-phase shunt active power filter (APF) to compensate the current harmonics and reactive power required by nonlinear loads is being presented in this paper. The key intention of this method is to represent the APF in parallel with nonlinear load as an equivalent conductance. In the proposed technique, first the distorted voltage signal of PCC is made...
With the increasing of non-linear loads in electric power system, power quality distortion has become a serious issue in recent years. In paper and pulp industries, due to presence of concentrated high power non-linear loads such as electric drives, this problem is a greater concern. This paper provides an in depth discussion on harmonic distortion taking place in Delta Paper Mill (DPM). The significant...
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