Technical specifications. Wind Turbine GS 21 S. Power 60 kwp

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1 Technical specifications Wind Turbine GS 21 S Power 60 kwp

GS 21 S - 60 kwp The best wind turbines, without compromise.

constitutes the first engine of the Wind Turbine while the conversion of mechanical energy into electricity is carried out

2 GS 21 S - 60 kwp The best wind turbines, without compromise. In order to exploit the kinetic energy contained in the wind and convert it into electricity, a Wind Turbine uses different mechanical and electrical components. In particular, the rotor (pitch and hub) extracts energy from the wind and convert it into mechanical energy and constitutes the first engine of the Wind Turbine while the conversion of mechanical energy into electricity is carried out by an electrical generator according to suitable settings. In summary, these are the main components that make up a Greenstorm Wind Turbine with a horizontal axis, direct drive. 2 GREENSTORM srl Olginate (LC) - Italy via Industria 2/A Tel Fax

3 Index pag. GENERAL INFORMATION CONFIGURATION WIND TURBINE GENERATOR BRAKING SYSTEM AND HYDRAULIC SYSTEM ROTOR LUBRICATING SYSTEM AND NACELLE YAW SYSTEM MONITORING SYSTEM SYSTEM OF ELECTRICAL CONNECTION TOWER AND BASEMENT LIGHTNING PROTECTION - VALIDITY AND REFERENCE STANDARDS PERFORMANCES PRODUCTION Melegnano (MI) - Italy via Rizzi, 3 Tel info@greenstorm.it 3

The GreenStorm Wind Turbines have been designed and manufactured in accordance with IEC-61400/1 for wind class 1 A.

4 GS 21 S - 60 kwp General information The GreenStorm Wind Turbine GS 21 S is equipped with a rotor of 22,2 m diameter and a nominal power of 60 kw. The rotor is a three-bladed with horizontal axis upwind and active control system. The GreenStorm Wind Turbines have been designed and manufactured in accordance with IEC-61400/1 for wind class 1 A. This applies to all the components produced by GreenStorm directly or in cooperation with qualified suppliers, ABB on top of them. The Certificate information are available on site. 4 GREENSTORM srl Olginate (LC) - Italy via Industria 2/A Tel Fax

BLADE BLADES HUB SUPPORT PITCH CONTROL ACTUATORS GENERATOR 60 KW 5- BRAKE DISC ELECTRIC PANEL COVER NACELLE NACELLE LOOM HYDRAULIC

5 Configuration Wind Turbine Type HORIZONTAL AXIS UP-WIND 3 ACTIVE BLADE Power adjustment Power Cut-In Wind speed at nominal power Cut-Off Min. lifetime ACTIVE PITCH CONTROL 60 KW 3 M/S 8,8 M/S 25 M/S 25 YEARS BLADE BLADES HUB SUPPORT PITCH CONTROL ACTUATORS GENERATOR 60 KW 5- BRAKE DISC ELECTRIC PANEL COVER NACELLE NACELLE LOOM HYDRAULIC POWER UNIT ATTUATORE DI YAW BRAKE CALIPER Melegnano (MI) - Italy via Rizzi, 3 Tel info@greenstorm.it 5

GS 21 S - 60 kwp Generator The Wind Turbine is poles 48 synchronous, multiple

inverter. The rotor is closely connected to the generator.

frequency CONNECTION AT 50 Hz Rotation speed 47,5 rpm Weight of the Wind Turbine

6 GS 21 S - 60 kwp Generator The Wind Turbine is poles 48 synchronous, multiple permanent magnet generator; the connection to the grid is through a dual inverter. The rotor is closely connected to the generator. Protection IP54 Power 59,9 kw Voltage at the nominal power 460 Volt Power frequency CONNECTION AT 50 Hz Rotation speed 47,5 rpm Weight of the Wind Turbine 2,7 Ton. Poles 48 6 GREENSTORM srl Olginate (LC) - Italy via Industria 2/A Tel Fax

Braking system and hydraulic system The main braking system of the GreenStorm Wind Turbines is aerodynamic, the rotation of the blades

It has been also provided an emergency braking system: a disc brake has been directly installed on the generator with passive hydraulic

Number of pliers 1 Brake pad DISK BRAKE CLOSELY CONNECTION TO THE GENERATOR ROTOR 1600 mm Hydraulic oil VG 32 Hydr.

7 Braking system and hydraulic system The main braking system of the GreenStorm Wind Turbines is aerodynamic, the rotation of the blades through the pitches allows a quick stop, gradual and without stress for the Turbine and the system itself. It has been also provided an emergency braking system: a disc brake has been directly installed on the generator with passive hydraulic pliers; in case of emergency, the brake caliper will activate, even in the absence of energy. Type Position Disk dm. Number of pliers 1 Brake pad DISK BRAKE CLOSELY CONNECTION TO THE GENERATOR ROTOR 1600 mm Hydraulic oil VG 32 Hydr. oil circuit capacity Thermal protection Nominal power SINTERED MATERIAL 12 lt WITH INTEGRATED SENSOR PT100 0,8 kw Melegnano (MI) - Italy via Rizzi, 3 Tel info@greenstorm.it 7

The pitches control can also work as aerodynamic brake in order to stop the rotation of the machine. The lightning rod system is built into the structure and protect all the system from root to tip.

8 GS 21 S - 60 kwp Rotor The GreenStorm Wind Turbine 21 S is regulated by the pitch control. The blades are built with high performance reinforced glass fiber; the attack angle of the blades can be adjusted in function of the rotation speed and depending of the wind speed. The pitches control can also work as aerodynamic brake in order to stop the rotation of the machine. The lightning rod system is built into the structure and protect all the system from root to tip. Rotor dm. 22,3 m Swept area 386,7 mq TIP maximum speed 198 km/h Power required per unit area 0,156 kw/mq Number of rotor revolutions 47,5 rpm Attack angle 1 Inclination angle of hub 6 Total weight of rotor and hub 2,6 ton Hub material STEEL S355JR Hub weight 1,7 ton Blades material GLASS FIBER REINFORCED Total length of the blade 10,50 m Twist 20 Weight of each blade 310 kg 8 GREENSTORM srl Olginate (LC) - Italy via Industria 2/A Tel Fax

9 20077 Melegnano (MI) - Italy via Rizzi, 3 Tel info@greenstorm.it 9

10 GS 21 S - 60 kwp Lubricating system Grease type SAE 2 Tank capacity 25 kg Engine power 0,8 kw Number of distributors 6 Nacelle The nacelle consists in the steel structure that performs the function of chassis and it is the support to which each component is fixed. Manufacturing Material Type of the nacelle cover Nacelle cover material WELDED STEEL CONSTRUCTION STEEL S355JR SHELL CONSTRUCTION REINFOIRCED FIBERGLASS 10 GREENSTORM srl Olginate (LC) - Italy via Industria 2/A Tel Fax

11 YAW System The wind direction and speed are constantly monitored using sensors placed on the nacelle. When the wind direction is different from the direction of the turbine, the YAW System turns on and take back the nacelle in the desired direction. Fifth wheel type Material Weight Engine Gearbox Lubrification Yaw rotation speed SINGLE TURN THRUST BEARING 42 NICRMO2 1,5 ton ASYNCHRONOUS ACTIVATED BRAKE PLANETARY 3-STAGES OIL 0,6 deg/sec Melegnano (MI) - Italy via Rizzi, 3 Tel info@greenstorm.it 11

12 GS 21 S - 60 kwp Monitoring system The control system is based on a PLC ABB and allows the managing and the remote control of the entire Wind Turbine i.e. the monitoring of all the turbine functions, such as the start-up procedure, the stop, the following wind and to adjust the power of the generator; in particular this is achieved by adjusting the position of the pitch (PITCH function) that can be controlled independently from one another. The monitoring system allows you to store a very large number of parameters: Data are processed by protocols which depend on the type of grid connection available on the site where the Wind Turbine would set up. 12 GREENSTORM srl Olginate (LC) - Italy via Industria 2/A Tel Fax

System of electrical connection The conversion system of the electric power is composed of two inverters: the first, on the generator side, is an ABB ACS800 drive that offers everything needed for a

13 System of electrical connection The conversion system of the electric power is composed of two inverters: the first, on the generator side, is an ABB ACS800 drive that offers everything needed for a complete and reliable frequency converter. The frequency converter technology named ACS800 is based on the system DTC (Direct Torque Control) which combined with the braking chopper, offers high performance and a number of benefits, such as precision static speed, dynamic and the exact torque control. The second inverter, on the network side, is an ABB PVI-67.0 WIND inverter with a power conversion performance that reaches the 98%. The high performance together with the channels of maximum power point tracking (MPPT) at high speed, guarantees and optimizes the energy harvest in a wide range of operational conditions. The whole system, including the electrical components, is supplied by ABB. It s also an isolation transformer, which isolates the generator Greenstorm by the network itself. The grid feed system is able of transmitting power according to the CEI 0-21 rules Melegnano (MI) - Italy via Rizzi, 3 Tel info@greenstorm.it 13

GS 21 S - 60 kwp Tower and basement GreenStorm Wind Turbines rise on a tower of 30 meters (36 mt to

Inside the tower, a staircase takes place in order to climb up to the nacelle.

Height Number of section 3 Weight Material Surface treatment Protection against corrosion Securing method

14 GS 21 S - 60 kwp Tower and basement GreenStorm Wind Turbines rise on a tower of 30 meters (36 mt to request), divided into 3 sections. Inside the tower, a staircase takes place in order to climb up to the nacelle. The basement of the towers are calculated as per the current legislation. Height Number of section 3 Weight Material Surface treatment Protection against corrosion Securing method 30 m /36 m 13,2 ton / 14,8 ton STEEL S355JR BLASTING AS PER ISO SA2 EPOXY PAINT AS PER UNI ISO UNI ISO WITH BOLTED FLANGES 14 GREENSTORM srl Olginate (LC) - Italy via Industria 2/A Tel Fax

Lightning protection The lightning protection is made according to standard 61400-24.

15 Lightning protection The lightning protection is made according to standard The protection provided to the turbine is both for direct lightning discharges and indirect discharges, which a full protection for the blades, the electrical generator and the control system. Validity GreenStorm reserves the right to modify the characteristics of the Wind Turbine without any notice. Reference standards EC Wind Turbine Generator Systems NVN Wind Turbines IEC WT01 Conformity Testing and Certification of Wind Turbines GL Guideline for the Certification of Wind Turbines DS 471 Loads and Safety of Wind Turbine Constructions DIBT- Rules Wind Turbines AGMA Gearboxes for WTG-systems CEI 021 Inverter Melegnano (MI) - Italy via Rizzi, 3 Tel info@greenstorm.it 15

16 GS 21 S - 60 kwp 16 GREENSTORM srl Olginate (LC) - Italy via Industria 2/A Tel Fax

17 Performances POWER CURVE 60kW S/21 WIND m/s PRODUCTION OF ENERGY 60kW S /21 MWh year ELECTRIC POWER kw Medium wind on site (m/s) (k=1,1; k=1,3; k=1,5; k=2) Melegnano (MI) - Italy via Rizzi, 3 Tel info@greenstorm.it 17

18 GS 21 S - 60 kwp Production Wind Power curve Medium wind (m/s) k= 1,3 IDEAL power a kw Net power a kw 5 5,5 6 6,5 7 7,5 0 0,0 0, ,1 0,1 0, , , , , , ,8 0,7 0, , , , , , ,8 2,4 0, , , , , , ,6 5,8 0, , , , , , ,0 11,3 1, , , , , , ,4 19,5 2, , , , , , ,6 31,0 2, , , , , , ,1 46,2 3, , , , , , ,8 69,0 60,0 1, , , , , , ,0 60,0 2, , , , , , ,18 69,0 60,0 1, , , , , ,04282 MWh Year 10 69,0 60,0 1, , , , , , ,0 60,0 0, , , , , , ,0 60,0 0, , , , , , ,0 60,0 0, , , , , , ,0 60,0 0, , , , , , ,0 60,0 0, , , , , , ,0 60,0 0, , , , , , ,0 60,0 0, , , , , , ,0 60,0 0, , , , , , ,0 60,0 0, , , , , , ,0 60,0 0, , , , , , ,0 60,0 7,61E-05 0, , , , , ,0 60,0 2,07E-05 0, , , , , ,0 60,0 5,25E-06 7,77E-05 0, , , , ,0 60,0 1,25E-06 2,39E-05 0, , , , ,0 60,0 2,8E-07 6,98E-06 7,84E-05 0, , , , , , , , , GREENSTORM srl Olginate (LC) - Italy via Industria 2/A Tel Fax

19 Note This technical description is to be considered non-binding and subject to technical modification or design/project changes that would be necessary due to unforeseen circumstances or impediments of any kind to date unknown Melegnano (MI) - Italy via Rizzi, 3 Tel info@greenstorm.it 19

20 Collaboration to: Associated solar nergy Your partner in solar energy CARPENTERIA OLGINATESE Via Industria 2/A Olginate (LC) - Italy Tel Fax info@greenstorm.it

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