Kostas Latoufis: Difference between revisions

Revision as of 19:10, 22 July 2016

800 euro - 2.4m diameter rotor - 600W maximum 10m/s. 5 m/s has around - 110 Watts +/-20W
30 cm diameter, disk, steel
RPM at 10 m/s 400 rpm
need thickness so you don't saturate the iron
Permanent deflection happens for larger
1200 kwh 5m/s. about 3 kwhr/day
Equivalent to a 500W solar array equivalent
30% efficiency wind to batteries, not including charging loss of batteries.
Generator designs are 87% and down to 80% as power increases. Need more magnets, then need less copper in stator.
Direct connect to battery - no maximum power point tracking
To connect to existing system - 300 Euro for tower/guy wires/concrete if necessary if no big rocks. 100Euro for cable. Diversion charge controller - goes to a resistor if too much - 250 euro - and resistor is $250 euro. Resistor is a thin wire wound around a metal cylinder for good heat dissipation. Surge power of 1kW of resistor.
Solar panels - just mounting structure + charge controller - $100
Magnets themselves cost - 10 euro per piece - need 24. 5 euro in bulk - 100 MOQ.
No iron core for
Powdered iron mixed in the resin - so you concentrate electric field in the core. For same amount of magnet, get more power. Typically lower efficiency when you have a core, but higher power density. With core, may be down to 75% efficient.
Core generator has cooling - fan on rotor.
Coreless is more expensive

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 *Solar panels - just mounting structure + charge controller - $100
 *Magnets themselves cost - 10 euro per piece - need 24. 5 euro in bulk - 100 MOQ.
+*No iron core for
+*Powdered iron mixed in the resin - so you concentrate electric field in the core. For same amount of magnet, get more power. Typically lower efficiency when you have a core, but higher power density. With core, may be down to 75% efficient.
+*Core generator has cooling - fan on rotor.
+*Coreless is more expensive