ARIA Libellula 55kW - small size wind turbine

GENERAL

cut-in wind speed 3 m/sec.
rated wind speed 11 m/sec
cut-out wind speed 25 m/sec.
extreme wind speed Ve50 = 52,5 m/sec.
rated power 55kW
grid voltage 400V ±10% 3 ph 50Hz
other on request

ROTOR

number of blades 2
diameter 18 m
speed variabile 60 - 95 rpm
power regulation passiva : variazione dell’angolo
delle pale
attiva : inverter

GEARBOX

type 2 stages – parallel shafts
ratio 1:20
nominal power 125 kW

MAIN GENERATOR

type asincronous - 4 polesrated power 55 kW
nominal voltage 400 V
frequency variable: 40 - 70 Hz.

GRID CONNECTION

converter type combined: inverter + rotating
asyncronous converter (*)
conversion principle AC-DC-AC+rotating converter
grid connected generator asincronous 55 kW - 4 poles
nominal voltage 400/460 V
frequency 50/60 Hz

TOWER

tipo cylindrical pipe 24 , 27 or 30m
number of sections 2 or 3
hub height 25, 28 or 31 m
material hot dip galvanised steel
location ascent internal

CONTROL SYSTEM

type n.2 PLC
remote diagnostic YES (by SMS with GSM modem)

YAW SYSTEM

type active
yaw motors n.1
yaw bearing crown-bearing; externally geared

SAFETY

1° safety system passive blade pitch
activation rotor speed (95rpm)
2° safety system yawing out of the wind
activation rotor speed (105rpm)
excessive vibrations
failure anemometer or wind vane
failure in PLC
grid failure
inverter error
yawning system failure
rotor blocking system on high speed shaft
for maintenance
activation manual

WEIGHTS

rotor 900 kg
navicelle including rotor 2.900 kg
tower 5.700, 7.800 or 10.800 kg

CERTIFICATION EN 61400-1

Certificate number 001CU/0 by ICIM SpA

(*) patent pending