Appendix A-1 50 Hz Specifications Sheet

109

AOC 15/50 50 Hz WTG Design Specifications

SYSTEM

Type

Grid Connected

YAW SYSTEM

 

Configuration

Horizontal Axis

Normal

Free, rotates 360 degrees

Rotor Diameter

15 m (49.2 ft)

Optional

Yaw damping-required when known conditions

Centerline Hub Height

25 m (82 ft)

 

frequently exceed 50° yaw rate per second.

PERFORMANCE PARAMETERS

Rated Electrical Power

50 kW @12.0 m/s (26.8 mph)

Wind Speed

@hub height 25 m (82 ft)

cut-in

4.6 m/s (10.2 mph)

shut-down (high wind)

22.4 m/s ( 50 mph)

peak (survival)

59.5 m/s (133 mph)

Calculated Annual Output

 

@ 100 % availability

5.4 m/s (12 mph) 85,000 kWh

 

6.7 m/s (15 mph) 145,000 kWh

 

8.0 m/s (18 mph) 199,000 kWh

ROTOR

Type of Hub

Fixed Pitch

Rotor Diameter

15 m (49.2 ft)

Swept Area

177 m ²(1902 ft²)

Number of Blades

3

Rotor Solidity

0.077

Rotor Speed @ rated wind speed

62 rpm

Location Relative to Tower

Downwind

Cone Angle

Tilt Angle

Rotor Tip Speed

48.6 m/s (109 mph) @ 50 Hz

Design Tip Speed

6.1

BLADE

Length

7.2 m (23.7 ft)

Material

Wood/epoxy laminate or Epoxy/glass fibre

Airfoil (type)

NREL, Thick Series, modified

Twist

7° outer blade

Root Chord

457 mm (18 in) @ 4% 279 mm (11in)

Max Chord

749 mm (29.5 in) @ 39% 2925 mm (115 in)

Tip Chord

406 mm (16 in) @ 100 % 7500 mm (295 in)

Chord Taper Ratio

± 2:1

Overspeed Device

Electro-magnetic tip brake

Hub Attachment

Embedded female bolt receptors

Blade Weight

150 kg (330 lbs) approximate

GENERATOR

Type

3 phase/4 pole asynchronous

Rated Temperature

-25°c

Frequency (Hz)

50 Hz

Voltage (V)

400, 3 phase @ 50 Hz (380V,415V also avail)

kW @ Rated Wind Speed

50 kW

kW @ Peak Continuous

55 kW

Speed RPM (nominal)

1500 @ 50 Hz

Winding Configuration

Ungrounded WYE

Insulation

Class F

Enclosure

Totally Enclosed Air Over (TEAO)

Frame Size

365 TC

Mounting

Direct mount to transmission

Options

Arctic low temp. shafting (-40°c)

TRANSMISSION

Type

Planetary

Housing

Ductile iron-integrated casting

Ratio (rotor to gen. speed)

1 to 24.57 (50 Hz)

Rating, output horse power

88

Lubrication

Synthetic gear oil/non toxic

Heater (option)

Arctic version, electric

DRIVE TRAIN TOWER INTERFACE

Structural

Yaw bearing mounted on tower top casting

Electrical

Twist Cable

TOWER

Type

Galvanized 3 legged, bolted lattice , self-supporting

Tower Height

24.4 m (80 ft)

Options

30.5 m (100 ft),

 

Tilt down 24.4 m (80 ft)

FOUNDATION

Type

Concrete or special

Anchor Bolts

Certified ASTMA-A-193-Grade B7

CONTROL SYSTEM

Type

PLC based

Control Inputs

Wind speed, generator shaft speed

Control Outputs

Line interconnection, brake deployment

Communications

Serial link to central computer for energy monitor

 

and maintenance dispatch (optional

Enclosures

NEMA 1, NEMA 4 (optional)

Soft Start

Optional

ROTOR SPEED CONTROL

Production

Blade stall increases with increased wind velocity

Normal Start up

Aerodynamic, electrical boost if necessary

Shut-down

Control system simultaneously applies dynamic brake and

 

deploys tip brakes. Parking brake brings rotor to standstill.

Back-up Overspeed Control: Centrifugally activated tip brakes deploy

BRAKE SYSTEM CONTROL

Fail-safe brakes automatically deploy when grid failure occurs.

APPROXIMATE SYSTEM DESIGN WEIGHTS

Tower

3,210 kgs

(7,080 lbs)

Rotor & Drivetrain

2,420 kgs

( 5,340 lbs)

Weight on Foundation

5,630 kgs

(12,420 lbs)

DESIGN LIFE: 30 Years

DESIGN STANDARDS: Applicable Standards, AWEA, EIA and IEC

DOCUMENTATION:

Installation Guide and Operation & Maintenance Manual SCHEDULED MAINTENANCE: Semi-annual or after severe events.

NOTE 1:Atlantic Orient Corporation and its affiliates are constantly working to improve their products, therefore, product specifications are subject to change without notice.

NOTE 2: Power curves show typical power available at the controller based on a combination of measured and calculated data. Annual energy is calculated using power curves and a Rayleigh wind speed distribution. Energy production may be greater or lesser dependent upon actual wind resources and site conditions, and will vary with wind turbine maintenance, altitude, temperature, topography and the proximity to other structures including wind turbines.

NOTE 3: For design options to accommodate severe climates or unusual circumstances please contact the corporate office in Norwich, Vermont USA

NOTE 4: For integration into high penetration wind-diesel systems and village electrification schemes contact the corporate office in Norwich, VT USA for technical support and systems design.

REV. September 19th, 2000

NOTICE: Use of the material contained in this document is subject to the warning on page Iv and the disclaimer on page v of this document.

DOC012R02

AOC 15/50 User Manual

Nov 2001

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AOC 15 user manual Drive Train Tower Interface