Design and Implementation of A 10kVA 48VDC TO 220VAC Ferrite Transformer Based Intelligent Converter for Renewable Energy Utilization

Abstract

Power converters are systems that can convert electric power from one form to another through frequency manipulations using a complex network of frequency oscillators, signal conditioners, semiconductor switches and amplifiers. One common example of a power converter is a DC to AC converter with existing design methods based on converting a DC voltage signal to AC voltage using traditional iron core transformers. These systems are bulky and weighty with inherent high level of losses primarily due to the components used. This research seeks to modify existing 10kVA power converter whose output power signal is a modified sine wave with ferrite transformers and Insulated Gate Bipolar Transistors (IGBTs), to produce a pure output sine wave capable of powering household appliances.  The approach is to equip the design with sensors that will make the system more intelligent than the existing converters. The objectives of this research include to produce a cheaper, smaller size, lighter weight, low loss, pure sine wave and voltage regulated power converter that makes the utilization of solar energy more efficient and provides an environmentally friendly alternative source of power supplies for homes and offices.