Sistema de armazenamento e geração de energia para locais de consumo remotos

Abstract

This work proposes the use of the converter Back to Back to maintain constant the voltage in the load on situations when the grid suffers from fluctuations or voltage drops. For this, the converter will have on your DC bus a storage system based on batterys that will able to supply the load for a period of time until the grid situation return to normal. The Back to Back converter choice came from this converter is able to provide to the load the energy stored in the battery regardless of the situation grid is. The work presents a general survey of components required to implement the converter. It made a study of the power flow between the grid and the converter to the power factor seen by the grid to be unitary. It is presented a synchronization method whit the grid to able the converter to work with the bidirectional power flow. Analyses are done using simulation in two different situations, the first analyses are make with the converter working under a normal grid operation. To this we are used different types of load. The second analysis was made regarding the network failures, where the behavior of the voltage and current on the load is analysed. To put into particle the concepts studied, an inverter is implemented that uses the estimated angle of the grid to generate its working frequency.