Thesis Abstract

Abstract
This research project focuses on the investigation of the performance index of a 3.5kVA/48V power inverter. Power inverters play a crucial role in converting DC power from batteries or solar panels into AC power for various applications in homes, businesses, and industries. The performance of a power inverter is critical in determining its efficiency, reliability, and overall effectiveness in providing stable and uninterrupted power supply. The primary objective of this study is to evaluate the performance index of a specific 3.5kVA/48V power inverter under various operating conditions. The performance index will be assessed based on key parameters such as efficiency, total harmonic distortion (THD), voltage regulation, overload capacity, and response time. These parameters are essential in determining the quality of power output, the ability of the inverter to handle varying loads, and its overall performance in different scenarios. The research methodology involves experimental testing of the 3.5kVA/48V power inverter in a controlled laboratory environment. The inverter will be subjected to different load conditions ranging from low to high loads to evaluate its efficiency and performance under varying power demands. Efficiency tests will be conducted to determine the energy conversion efficiency of the inverter, while THD measurements will assess the quality of the output waveform. Voltage regulation tests will be carried out to determine the inverter's ability to maintain stable output voltage levels within specified tolerances. Overload capacity tests will evaluate the inverter's capability to handle sudden load surges and peak power demands without compromising its performance or safety. Response time measurements will assess how quickly the inverter can respond to changes in load conditions and adjust its output accordingly. The findings of this research will provide valuable insights into the performance characteristics of the 3.5kVA/48V power inverter and help in identifying areas for improvement or optimization. By evaluating the inverter's efficiency, THD, voltage regulation, overload capacity, and response time, this study aims to provide a comprehensive analysis of its overall performance index. The results of this research can be used to enhance the design, operation, and application of power inverters in off-grid systems, backup power solutions, and renewable energy applications.

Thesis Overview

Electric power interruptions are quite common in every place, especially after a heavy down pour or a severe storm. To counter this power outage, a search has been to find a reliable and economical alternative source of electricity. Although this kind of project has been dealt with for quite a number of time but the fact still remains that an improvement needs to be done. This in essence makes the project topic “Investigation of the performance index of 3.5KVA/48V inverter” purposeful and resourceful. An inverter is a device or an electronic that converts or inverts a direct current into a conventional alternating current. A power inverter is a great tool used to run household / office appliances, where there is no electricity. The input voltage and frequency of the inverter may be fixed or it may vary depending on its application. Inverters finds several applications of which are the valuable speed, alternating current motors, uninterrupted power supply etc. They can be used as the front stage of dc to dc converter. Standby inverters are mostly used to provide emergency supply to the main frequency (50Hz). In the event of main failure, the inverter immediately operates with no loss of waveform. This unique ability makes it related to an automatic change over switch but it diers in a way in that it has a battery, which stores energy when the mains is on and gives out energy when the mains is o while the automatic change over switch operates on contractor (open and close). There are many types of inverter as described in chapter 2, but they all have the same principle of operations and it all depends on the component used, whether with a thyrist or or a bipolar junction transistor for switching the current ON/OFF. The need for man to prevent his activities from being interrupted in order not to render it incomplete which may subsequently become an unfinished job (loss of files in the computer when there is a sudden power outage) has motivated engineers across the globe to design a device which will be more economical, durable and efficient. It is pertinent to note that in a well organized company in a developing country like Nigeria, where a lot of transactions are made, if there is an epileptic power supply, the flow of transaction will greatly be hindered and there will be no open ground for the infant companies to spring up and wax great. Power should not be an obstruction between companies and their maximum profits, this in essence makes the use of a power inverter relevant and recommended to all and sundry. Hence, the need for the investigation of the performance index of various inverters comes to play. And this helps to determine which inverter is more efficient, portable, durable, and cost effective.