Abstract: This paper presents the design, construction and implementation of microcontroller low voltage switched 1.5KVA pulse width modulation inverter system. This device is used to convert the DC generated by battery to AC output. The developed circuit utilizes SG3524 control circuitry. It was designed to provide automatic changeover once the supply voltage is below 160V. The supply voltage is fed to the microcontroller through an Analog to Digital converter. The microcontroller monitors the supply voltage and biases the BC547 transistor connected to one of its pins once the supply voltage is below 160V and then switches on the inverter. The inverter monitors the overall output power drawn from the inverter using a combination of operational amplifier, resistors and transistors to avoid overload. The system takes in 12V DC source and delivers a modified square wave form at a frequency of 50Hz at a period of 20ms within a voltage range of 200V to 230V.
Keywords: Inverter, Direct Current, Alternating Current, Pulse Width Modulation, Microcontroller, Analog to Digital Converter, SG3524.
Title: Design and Implementation of Microcontroller Low Voltage Switched 1.5 KVA Pulse Width Modulation Inverter System
Author: Nwokoye, A.O.C, Ikenga, O.A, Anene C.R
International Journal of Electrical and Electronics Research
ISSN 2348-6988 (online)
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