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STX 93 generator design & assembly
STX 93 generator design & assembly
STX 93 generator design & assembly
STX 93 generator design & assembly
STX 93 generator design & assembly
STX 93 generator design & assembly
STX 93 generator design & assembly
STX 93 generator design & assembly
STX 93 generator design & assembly
STX 93 generator design & assembly
STX 93 generator design & assembly
STX 93 generator design & assembly
STX 93 generator design & assembly
STX 93 generator design & assembly
STX 93 generator design & assembly
STX 93 generator design & assembly
STX 93 generator design & assembly
STX 93 generator design & assembly
STX 93 generator design & assembly
STX 93 generator design & assembly
STX 93 generator design & assembly
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STX 93 generator design & assembly

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G.J. de Vilder

G.J. de Vilder

Published in: Business, Technology
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  • 1. STX 93 Generator design & assembly06/10/2011 G.J. de Vilder
  • 2. ω ωω 1
  • 3. ω 2
  • 4. 12 years of Dutch industry windturbine designNedwind 62 1MW LW 52 750kW STX72 2MW STX93 2MWGeared Asyn gen DD EE syn gen ABB DD PM gen STX DD PM genYr of comm: 1999 2000 2010 2011
  • 5. WT type NW62 LW52-750 Z72 ABB STX93year of commisioning 1998 2000 2003 2011power [MW] 1 0.75 2 2rated speed [rpm] 18 26.5 22.5 16.5generator type [-] geared SQI asynchronous synchronous DD synchronous DD synchronous DD permanentexitation electrical electrical permanent magnet magnetR airgap radius [m] 0.35 2.45 1.75 2.49length of a single conductor l [m] 1.45 0.41 1.3 0.865ω angular speed [/s] 158.5 2.8 2.4 1.7
  • 6. WT type NW62 LW52-750 Z72 ABB STX93year of commisioning 1998 2000 2003 2011power [MW] 1.00 0.75 2.00 2.00rated speed [rpm] 18 26.5 22.5 16.5gb x generator x converter efficiency [-] 0.93 0.90 0.92 0.93torque [kNm] 570 300 921 1249 synchronousgenerator type [-] geared SQI asynchronous DD synchronous DD synchronous DDexitation electrical electrical permanent magnet permanent magnetrel.torque [-] 0.46 0.24 0.74 1.00entire drivetrain mass [kg] 33000 22000 49000 57000rel.mass [-] 0.58 0.39 0.86 1.00outer diameter [m] 1.06 5.62 3.99 5.56rel.mass/torque [-] 1.27 1.61 1.17 1.00
  • 7. 2. Composition of the generator 6
  • 8. 2. Composition of the generator 7
  • 9. 2. Composition of the generator 8
  • 10. 3. Assembly of the STX93 generator 9
  • 11. 4 Test of the generator-Finally the heat run 10
  • 12. 4 Test of generator (temperature distribution) 11
  • 13. 4 Test of generator (Results)-after 20 hr full load on temperature-max temperature: 25C below limit-ambient temperature: 30C 12
  • 14. 5. Construction of the STX93 (final lift) v avg at hub Output STX93 [m/s] [MWh/yr] 95% availability 6 4626 6.5 5417 7 6163 7.5 6847 8.5 7984 13
  • 15. 5. Cost of Wind other energy generation methods [$/MWh] 14
  • 16. 5. Potential contribution of STX93 for NL energy demand Electricity consumption per home/yr [MWhr] 3.35 people/home[-]: 2.3 NL inhabitant # [-]: 16000000 Total energy consumption all homes in NL [GWhr]: 23304 State of art WT energyproduction/jr [GWhr] 6 required # WT [-] 3884 rate of demand of homes to total demand [-] 0.25 installed # of WT (2009 CBS; senternovem) 1873 estimate Q2 2011 1967 15
  • 17. 5. Potential contribution of STX93 for NL energy demand NL Windmap: Only WT installations along coastal area s (2000 #) No installations in centre & mid east & mid south area Population density in red . is similar or less; therefore 2000 additional STX93 WT, could be placed here & in case all WT are existing WT s are replaced by STX93, 100% of energy of homes can be supplied by Wind (= 25% of total, onshore) 16
  • 18. 6. Future developments (for DD) increase in cost price Feb-10 Jun-11 [Eu] PM price [USD/#] 21 160 Euro to Dollar 0.72 # of magnets [-] 4800 4800 PM price [Eu/#] 15.1 115.2 total PM cost [Eu] 72600 553000 480000 PM cost / WT cost price 4.0% 24.3% 17
  • 19. 6. Future developments geared <=> DD w.r.t. efficiency 98.0 96.0 94.0 efficiency [%] 92.0 90.0 3 stg gear + PM1000rpm 2 stg gear + PM450rpm 88.0 0 stg gear: DD PM15rpm 86.0 0.0% 20.0% 40.0% 60.0% 80.0% 100.0% 120.0% partial load level [-] 18
  • 20. Conclusions 19
  • 21. Questions? 20

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