RELIABLE WIND ENERGY TECHNOLOGY FOR CENTRAL AMERICA Energy and environment Partnership with Central America VI Regional Forum, Managua, 5-7 October, 2005 Matti Lilja Winwind Oy Oulu, Finland Why WinWinD developed a new wind turbine? • Power companies want more reliable technology • Turbines become bigger, technical evolution not enough, place for novel turbine concepts • Best sites have been used, need to exploit less windy or more difficult sites more efficiently • Wind power market grows fast, gives business opportunity Basis of WinWinD technology • Reliability, ease of maintenance, and good energy gain as key targets for WinWinD • therefore traditional gear box solution was rejected • direct drive was found to become too heavy in megawatt and especially multi-megawatt class • Innovative novel technology now available • the novel Multibrid® chosen because of in-built reliability and reasonable weight • 3 years of active product development with world class partners • first 1 MW machine built summer 2001, good results • design finalised, and series production of WWD1 since early 2003 How to get directly to the top • copying and doing-it-ourselves would have been too slow • choice was to keep concept in own hands but use the gained experience of main component manufacturers => the R&D partners • reliable performance and secured operation and maintenance support are in-built from very beginning • local presence essential => the business partners WinWinD today: 1 and 3 MW wind turbines Rated power 1 MW 3 MW Rotor diameter 56, 60 m 90,100m Tower height 56-70 m 80-90 m Cut-in wind speed 3 m/s 4 m/s Cut-out wind speed 25 m/s 25 m/s Rated wind speed 12 m/s 13 m/s The Multibrid® concept • Variable speed, single-stage gear, low speed permanent magnet generator, frequency converter • Eliminates high speed components, keeps reasonable weight • Mechanical forces managed with special main bearing • Integrated power unit • Enclosed structure to protect from dust and salty water WWD – advanced Multibrid® solution The WWD Multibrid®- solution combines the benefits of proven technologies - reliability of a direct drive and the compactness of a gear system. Comparison of gearbox types The Multibrid® versus traditional fast gearbox solution: 90 % less speed, 80 % less components Efficient and reliable generator • No ambient air through generator • Temperature kept low with a cooler • Permanent excitation saves losses and heat • Grid side filter to reduce harmonics • Preformed coil bar winding to improve reliability • Balance of active and reactive power can be adjusted WinWinD 1 MW machine 1 and 3 MW wind turbines located at Oulu. Finland WinWinD references Finland: 14 turbines WinWinD references Portugal: 4 turbines WinWinD references Sweden: 11 turbines WinWinD recent references WIND FARM LOCATION COMMISSIONING 1 x 1 MW Oulu/Finland 8/2001 2 x 1 MW Kokkola/Finland 5/2003 3 x 1 MW Oulunsalo/Finland 8/2003 3 x 1 MW Kristiina/Finland 11/2003 1 x 1 MW Olkiluoto/Finland 10/2004 1 x 3 MW Oulu/Finland 11/2004 2 x 1 MW Mafra/Portugal 12/2004 1 x 1 MW Vara/Sweden 2/2005 1 x 1 MW Les Diagots/France Q4/2005 1 x 3 MW Kemi/Finland Q4/2005 3 x 1 MW Götaland/Sweden Q4/2005 2 x 1 MW Portugal/North Q4/2005 5 x 1 MW Seskarö/Sweden Q1/2006 1 x 3 MW Pori/Finland Q1/2006 8 x 3 MW Viru-Nigula/Estonia Q3/2006 WWD1 – technical advantages • good efficiency also at lower wind speeds • robust structure withstands heavy loads • reliability and long life time • closed loop cooling, salty or dusty air cannot permeate • low maintenance need, all actions inside nacelle • supports weak grids: balance between active and reactive power can be adjusted • automatic control system to optimise the production and to control the generator Reliability verified in operation VIHREÄSAARI 1 MW PLANT • the pilot unit, located in Oulu, Finland • location at seaside, on-shore • average wind about 7 m/s • connected to a 10 kV net • I n operation since August 2001 • ambitious reliability targets proven in operation • availability higher than predicted (over 97% in 2004) Availability, concrete achievements Period January – December 2004 Oulunsalo, Vihreäsaari, Kokkola Kristiinankaupunki wind farms • availability clearly over 97 %, • in some farms even over 98 % WWD1 – technical advantages • Good efficiency also at lower wind speeds • Reliability and long life time • Closed loop cooling, salty or dusty air cannot permeate • Low maintenance need, all actions inside nacelle • Grid friendly power output: balance between active and reactive power can be adjusted • Turbines go through intensive testing with full power before delivery Project Reference Name of Client: PVO-Innopower Oy Project Site: Kristiinankaupunki, Finland Project Period: Autumn 2003 Main technical data: amount of the turbines: 3 unit output: 1 MW hub height: 70 m rotor diameter: 56 m classification class: IECII park production (est.): 7500MWh/a Company resources •Solid ownership through power company background •Experienced and motivated team of wind power professionals •Financial resources ensured, strong owners •Component core competence gained through prime development partners •International and local presence through partners WinWinD – where beneficial? • concentration where reliability and good energy gain are decisive • emphasised in countries with – good green energy price but average wind conditions – strong winds causing heavy loads on turbine – down-time due to failures should be minimised • investment price of WWD turbines is not among the lowest, therefore WWD aims to projects where overall energy production cost is of key importance • technical advantages supported to uncompromised customer service, together with the local partner Winwind Oy Elektroniikkatie 2 B 90570 OULU, Finland Phone: +358 8 551 3255 Fax: +358 8 551 3256 E-mail: [email protected] www.winwind.fi Winwind Oy Elektroniikkatie 2 B 90570 OULU, Finland Phone: +358 8 551 3255 Fax: +358 8 551 3256 E-mail: [email protected] www.winwind.fi.