DESIGN AND CONSTRUCTION OF A 1.7KVA PURE SINE WAVE INVERTER USING PULSE WIDTH MODULATION TECHNIQUE

Abstract

This project is targeted on the design and construction of 1.7kVA pure sine wave following the high demand of constant and pure electricity sources for consumer homes or small commercial. The inverter ensures clean pure solar energy is converted from DC sources to AC voltages that can be used in consumer devices. The methodology that was adopted to achieve this project construction is the pulse-width modulation technique, which ensures that DC signals is fed to a MOSFET driver circuit which then produces AC signals. This current is then stepped up by a transformer to produce the desired 220 volts AC output voltage. The transformer we used also ensures that the inverter system can take up a load of 1.7kva. We found out that most inverters in the market produce a modified sine wave signal, therefore we used capacitor filters to ensure we obtain a clean pure sine wave as our output. We recommend that consideration should be made to the load being used for the inverter to ensure it doesn’t exceed its capacity. Also, an improved IC and MOSFET system can be used to obtain smother AC results. The aims and objectives of this project were all achieved at the conclusion of the project.