Sunseed News
Appropriate Technology News Summer 2011
Here are some of the highlights of what we did.
- Installed new 930Ah traction batteries at the Main House
- Wind turbine course – installed a 1kW turbine at an off-grid cortijo
- Annual maintenance of the Sunseed wind turbine in the Solar Garden:
- rotor alignment, balancing of blades, protective coating
- Built open source wind turbine controller circuit and dump load
- Major overhaul of the ram pump
- Installed a battery monitor to Isabella’s using an M10 bolt as a shunt
- Irrigation line maintenance – cleaning pipes, fixing leaks
- PV course – designed and installed off-grid PV system at Isabella’s
- Measured IV curves of all the different PV modules
- Software simulation of all three PV systems with PVSyst
- Helped with refurbishment of the cana bridge
- Hosted Greenpeace scouts for irrigation line maintenance
- Several AT tours
- Visit to Plataform Solar
- Wind turbine article for Ecohabitar magazine