The system was required to provide 24 hours sustainable 220V AC
power appropriate to the village's domestic and light industrial power
demands.
The DC electricity generated by a Model S20000 wind turbine
designed to generate an average of 20kWh/day in the low wind regime
of 4.5m/sec. was stored in a set of 24 solar cycle batteries. A specially
designed control panel regulated the power input to these batteries.
The 48V DC power was then inverted to 220V AC power to meet the
load demand from 52 houses, 2 mosques, a civic centre, and a light
industrial building. Each house had a limit switch to regulate the
power consumption to that deemed appropriate for each house.
A DC diesel generator was used as a back up power source to charge
the batteries when they reached their recommended discharge level
during wind drought periods.
The system was fitted with monitoring equipment to record the wind
speed, the power output of the turbines, the DC diesel usage and the
load demand. The monitoring was carried out by LAPAN, a division
of the Indonesian Department of Technology.
The pilot project has positively demonstrated the viability of S-20000