BWEA Summary Report for the C&F Green Energy Small Wind Turbine, Model No. CF20 (Phase A)

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1 Cleeve Road, Leatherhead Surrey, KT22 7SB UK Telephone: +44 (0) Facsimile: +44 (0) BWEA Summary Report for the C&F Green Energy Small Wind Turbine, Model No. CF20 (Phase A) Report No. : LHD-003a Date Issued : 22 June 2015 Date Revised : None Client : Mr Enda Meaney C&F Green Energy Ltd Cashla, Athenry Co. Galway Republic of Ireland Phone: enda.meaney@cfgreenenergy.ie Prepared by : Nick Jones Reviewed by : Kevin Sweeney Title : Consultant Engineer Title : Business Development Director Signature : Signature : This report is for the exclusive use of Intertek s Client and is provided pursuant to the agreement between Intertek and its Client. Intertek s responsibility and liability are limited to the terms and conditions of the agreement. Intertek assumes no liability to any party, other than to the Client in accordance with the agreement, for any loss, expense or damage occasioned by the use of this report. Only the Client is authorized to permit copying or distribution of this report and then only in its entirety. Any use of the Intertek name or one of its marks for the sale or advertisement of the tested material, product or service must first be approved in writing by Intertek. The observations and test results in this report are relevant only the sample tested. This report by itself does not imply that the material, product or service is or has ever been under an Intertek certification program. Intertek Testing and Certification Ltd Page 1 of 7

2 1 Summary The purpose of this report is to provide a summary of test results in accordance with the British Wind Energy Association Small Wind Turbine Performance and Safety Standard, 29 February The results contained in this summary report have been taken from the following test reports: Document Reference Report Title Date LHD LHD MKS LHD-008a Power Performance Testing of C&F Green Energy Small Wind Turbine, Model No. CF25 (Phase A) Power Performance of C&F Green Energy Small Wind Turbine, Model Nos. CF20, CF19.5, CF15 & CF11 Acoustic Noise Emission Test Report for the C&F Green Energy Wind Turbine Generator System Strength and Safety Report for C&F Green Energy Small Wind Turbine, Model No. CF25 (Phase A) 26-May Jun May Jan-2014 This investigation was authorized by signed proposal number , dated 02 June If there are any questions regarding the results contained in this report, or any of the other services offered by Intertek, please do not hesitate to contact the signatories on this report. Please note, this report on its own does not represent authorization for the use of any Intertek certification marks. 2 Revision History Date Revised By Description of Changes 22-Jun None new report Intertek Testing and Certification Ltd. Page 2 of 7

3 C&F Green Energy 3 Description of the wind turbine The CF20 is designed for grid-connected power delivery, with a manufacturer s declared rated power output of 20 kw. The CF20 is a horizontal axis machine with a 3-blade upwind rotor with active speed and power control through active blade pitch actuation and turbine yaw control. The CF20 has a three-phase permanent magnet variable-speed generator directly coupled to the rotor, the output of which is fully converted in the inverter. The inverter output is configured for connection to three-phase split-phase or single-phase electrical networks with nominal operating voltage of 230 V phase to neutral at 50 hz. Overspeed protection is provided by disc brake on the main shaft. The nacelle is mounted on a self-supporting steel monopole tower which is hinged to permit lowering of the nacelle for installation and maintainence. This machine is based on the CF25 (Phase A) but with the power output restricted to 20 kw by means of speed reduction and inverter programming. Figure 2: C&F Green Energy CF20 Wind Turbine Intertek Testing and Certification Ltd. Page 3 of 7

4 A summary of the test turbine configuration and manufacturer s declared ratings can be found in Table 2 below. Table 2: Turbine Characteristics Manufacturer : C&F Green Energy Model No. CF20 (Phase A) Description: Rotor Diameter : Rotor Swept Area : m³ Number of Blades : 3 Hub Height : Tower : Rated Power : Rated Wind Speed : Wind Class : Survival Wind Speed : Cut-in Wind Speed : Cut-out Wind Speed : Rotor Speed Range : Low Speed Shaft Speed : Speed Reduction Method : Yaw Control : Blade Pitch Control : Blades specification : Blade Identification : Generator Type : Generator Identification : Power Conversion : Inverter Type : Inverter Software : Grid Protection Method : Grid Protection Type : Turbine Controller : Turbine Controller Software : Nominal Network Conditions : Horizontal axis wind turbine with active blade pitch and active yaw 13.1 m (verified be measurement) m Tubular steel monopole (not guyed) 20 kw (nominal) 13.0 m/s II (Vave = 8.5 m/s) 70 m/s 2.2 m/s 25 m/s 0-85 rpm (normal operating range) N/A (generator runs at Rotor speed) N/A Active Active Drawing no. B-0406-G Closed mould infusion of glass-filled vinylester resin over a polyurethane foam core with double spar, 7 twist from root to tip, airfoil geometry based on NACA 5415 Blade set no. CFGE-BS , individual blade serial nos , & Permanent magnet, asynchronous, ac 3-phase, radial flux CFR1410H01 Solid-state inverter ELPower TL30 DSP:400, PLD:24, Ext Logic: Separate G59 relay ComAp Mainspr0 Phoenix Contact PLC-ILC-150-GSM 20KW_85RPM.csv 230 V phase to neutral, 50 hz, 3-phase, split-phase or single-phase Intertek Testing and Certification Ltd. Page 4 of 7

5 4 Performance Results CF20 performance at sea-level air density; kg/m 3 Presentation of data in the measured power curve (database A) Reference air density: kg/m 3 Bin Bin Average Wind Speed Power output Cp Number of 1- Minute Data Category A Standard Uncertainty Category B Standard Uncertainty Combined Standard Uncertainty (m/s) (m/s) (W) Sets (W) (W) (W) (363) BWEA Reference Power: m/s Intertek Testing and Certification Ltd. Page 5 of 7

6 CF20 power curve corrected to sea-level air density; kg/m 3 The table below summarizes the estimation of expected annual energy production (AEP) at sea-level air density. CF20 Estimated annual energy production of the at sea-level air density Hub height annual average wind speed (Rayleigh) Estimated annual energy production (database A) Reference air density: kg/m³ Cut-out wind speed: 25 m/s (extrapolation by constant power from last bin) AEP-measured (measured power curve) [note 1] Standard uncertainty in AEP [note 2] Standard uncertainty in AEP [note 2] m/s kwh kwh % Note 1: AEP-measured assumes zero power above the range of the database (22.0 m/s). Note 2: The uncertainty figures in the above table are based on a coverage factor of 1. BWEA Reference Annual Energy: 41,324 5m/s Intertek Testing and Certification Ltd. Page 6 of 7

7 5 Acoustic Noise Measurements Noise Label Sound Power LWd,8m/s (dba) 88.4 NOISE EMISSION LEVEL ACOUSTIC NOISE LEVELS Turbine Make C & F Green Energy Ltd Model CF20 CF25 Noise Slope SdB (db/m/s) 2.65 NOISE PENALTY NO Wind Speed (m/s) > 45 db db < 40 db IMMISION NOISE MAP (Including Noise Penalty where applicable) No data recordedabove 11 m/s No data recorded below 3 m/s Slant Distance (m) Immission Sound Pressure Levels at 8 m/s hub height wind speed: BWEA Reference 60m Sound Level L p,60 = dba BWEA Reference 25m Sound Level L p,25 = dba Intertek Testing and Certification Ltd. Page 7 of 7