Development of a Self-Sustaining Electro-Mechanical Power Conversion Generating System
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Access to modern and clean energy services is a necessary requirement for achieving development goals that extend far beyond the energy sector, such as poverty eradication, access to clean water, improved public health and education, women’s empowerment and increased food production. In Uganda, 618 000 households in urban areas and 4.85 million households in rural areas of Uganda don’t have access to electricity. In addition; those who have access to electricity are facing frequent blackouts and high costs of pre-paid electricity. This has constrained the economic growth of the nation in the recent years. This research was aimed at developing a low maintenance-cost power generation system suitable for small scale and medium industries. A system that is capable of continuous electro-to-mechanical energy conversion and storage was designed and assembled. The system consists of an alternating current motor of one horse power capacity that is used to drive the belt and pulley drive which from a gear-train and produces a speed at the alternator increased by over one and half revolutions per minute. The remarkable point about this system is that grater electrical output power can be obtained from the output of the alternator than appears to be drawn from the input motor. It is done with the help of Gravity wheel (flywheel). The flywheel is coupled with the gear-train in order to produce more extra energy (free-energy). The overall study is done with various parameters of flywheel, alternator, motor, inverter and battery charger to obtain the maximum extra energy out of the system. This system was started using the electricity mains to run the 1 horsepower motor for about a minute to allow the system gain momentum. The output power from the 1000 W alternator was passed through the battery charger to maintain charge on 100 Ah battery. Power from the battery was passed through a 2000 W pure sine wave inverter to power the motor after being disconnected from the mains. The assumed extra power from the alternator was regulated and supplied to the load. After disconnecting the mains; the system was able to power a 100 W bulb for about a 60 seconds and with no load, the system ran for about 90 seconds and then finally came to halt. The halt can be attributed to the capacity of the alternator used. It produced little power than what was required for the system to sustain itself. This system can be improved by using a 3 kW permanent magnet alternator, 1 horsepower motor in the system, approximately 30 kg flywheel with 30 inches in diameter, and two class “A” belts.