Electrical and Electronics

In order to increase the reliability and efficiency of distributed micro-generation a modular grid-connected inverter system is proposed. It consists of a modular DC-DC converter and modular DC-AC converter. Output of the DC-DC converter and input of the DC-AC inverter is connected with a DC bus .The By using the DC-DC converter voltage can be stepped up and Maximum power point tracking can be achieved In this system no transformer is used in the inverter side to inject the voltage into the grid. Here the Voltage is injected in the grid using inductor filter. The practicability of the proposed system has been verified by simulation results.

The aim of the paper is proposed to reduce the electrical power demand in domestic and industrial sectors. Through this technique the power supply is controlled and supplied is achieved. The electric supply is turned off when it crosses above the threshold power level; this switching is done with the help of relays. The power measurement is done with the help of power measuring circuit which is connected across the supply and to the microcontroller in which the programs are embedded. The ZigBee is employed to control and communicate with the power outlets. By using IR remote controller the various power outlets can be electrically ON and OFF condition. Using this technique the various power loads can be cutoff in priority wise.