Yaw System I Basics,Partnership Unlimited,Main functions,move the nacelle into wind direction intersection from tower to mainframe,No oil! No grease!,Principle of the dry bearing,Transfer lubrication by solid lubricants,Data source by,Transfer lubrication by solid lubricants,Data source by,Danger of stick-slip,Data source by,Danger of stick-slip,Data source by,Danger of stick-slip,Data source by,Danger of stick-slip,Data source by,Danger of stick-slip,Data source by,Danger of stick-slip,Data source by,Cof detection,Oil contamination,Pay attention,Experience,Experience,1.0m Ra 1.5m is grinding, NO milling,Main mechanical components,gear rim,mounting frame,lateral suspender,sliding pad,sliding pad holding,lateral sliding pad,setscrew for adjustment,disc springs,Lateral suspender and sliding pads. Mechanical connection between Mainframe and Yaw rim.,Lateral suspenders,Pay attention,Adjustment of the setscrews (Lateral suspender) Setting is different (Workshop or on site) Warm up“ time (sliding pads) Roughness (measuring device) What is necessary to work on the yaw system safely? Use emergancy stop button!,Yaw drives Yaw control device Yaw converter,Main electrical componentes,Yaw drives,4 standard asynchronous motors in parallel 1 frequency converter Electrical actuated brake with feedback PTC thermistors integrated in the windings Yaw control device manual brake release,- 4 Cam switches responsible for Nacelle position - Absolute, relative position - Cable twist protection,Yaw control device,Yaw Control Device: Wiring,Yaw converter / Brake control,Closing and releasing of the brakes is controlled automatically by the yaw converter The feedback contacts of the brakes are connected in series and connected to the yaw converter If the output frequency is different from zero without brake feedback (brake not released), an external error is triggered,Control overview,PLC mode Normal operation Manual mode Operation via control panel in service mode WPM Service box Converter Soft start Limited torque Yaw brake,PLC,3400VAC supply,230VAC brake,yaw motors,signals,converter,yaw control,anemometer,AMSC Windtec subsidiary of American Superconductor (AMSC) Service Department Schleppeplatz 5 9020 Klagenfurt Austria Ph: +43 (0) 463 444604-70Fx: +43 (0) 463 444604-950 Email: WindtecServiceamsc- http: www.amsc-,