Year: 2026
Type: article
Abstract: The micro-inverter is small, compact source of energy and can provide a single-phase output voltage of 230v and support a load power of 150W. This microinverter can be used to power up devices such as Wi-Fi routers, mobile chargers, Closed-Circuit Television (CCTV) cameras, emergency medical equipment, emergency lights, etc. The DC power required for the inverter is obtained from the stack of Li-ion batteries connected in a series-parallel combination. The charge controller ensures the charging of the individual battery of the stack has a balance of charging and provides the protection required for the battery. Existing microinverters use lead acid battery. The proposed converter uses Lithium-ion batteries as they are more efficient compared to lead acid batteries and require less space, have low self-discharge, and have higher energy density. The charge controller has been designed and simulated. The final circuit is fabricated on a Printed Circuit Board (PCB) which ensures uniform charge distribution optimizing the size and heat dissipation. The inverter uses a modified sinusoidal pulse width modulation signal generated by a PIC microcontroller. The H-bridge configuration uses MOSFET as a switch and is driven by opto-isolators. The 12V AC output of the H-bridge is converted into 230V ac using the step-up transformer. Testing of the project is carried out at individual stages, and the results are verified with theoretical values.
Author: Pradeep Kumar
Institution: Nitte University
Language: English
Topic: Advanced DC-DC Converters
Subfield: Electrical and Electronic Engineering
Field: Engineering
Domain: Physical Sciences
Open Access status: green
OpenAlex ID: W7154596235
FWCI:
Cites:
Cited by:
Related to: