Volume 1 - Issue 4, November - December 2025

This project is aim at the design, construction and evaluation of 1.5 kVA, fuel-less generator to produce 1.5KW of electricity. which of cause is to mitigate in-secant power outages and total black out which of course is a major problem in Nigeria, that increases downtime, high cost of productions of goods and services. The aim of this project was achieved by directly connecting a 1.5Hp, 12V, 4250rpm, Brushed Direct Current (BDC) motor via a shaft to a 1-ф, 1.5 kVA, 3000rpm, 220V and 50Hz rotor of an alternator, using a 12V battery as the energy storage unit (Energy Bank). The BDC motor was connected to a 12V DC rechargeable battery and a DC switch by a 4mm red and black DC cables. The switch when powered on would cause the 12V battery to excite the BDC motor and the BDC motor will prime the rotor of the alternator through a rotatory motion at a higher speed greater than 3000rpm to produce 220V of electricity. The battery is automatically recharged by connecting the 20V, 8.3A part of the alternator coil with a bridge diode, a 470μϜ capacitor, a 1kΩ resistor and a red LED. The charger produces a smooth sine wave AC (rectifier) that is converted to a DC current to charge the battery at the same rate of discharge (DoD) causing the generator to run continuously when the rate of discharge id equal to the rate of charging the battery. A frame was fabricated to house the electrical components of the generator. Meanwhile, when the generator was powered on, a torque was produced, analyzed and evaluated. The resultant time obtained when a DC motor torque (
) of 3.4Nm was used to drive (Acceleration) the motor (
) at no load speed from 0 - 3000rpm was 0.334sec and to drive (Deceleration) the alternator (
) from (3000 - 0) rpm was 0.235sec. The generator was found to have an average stability performance of 74.6% and it is advised that the maximum load should not be more than 500W for a better performance. The research has significantly achieved the UN SDG.7 which is to access an affordable, clean and noiseless energy and UN SDG13 which is focused on climate change