Some notes made on visit of Suzlon windfarm few yaers back.

• 1.25 MW machine was studied. It generated 20 thousand Units a day.Cost of the machine was Rs.5 Crore.Total windfarm had 500 such machines and windfarm capacity was 650MW.


• The windfarm was having 1.5 MW and 2.1 Mw machines under installation. The 1.25 MW machine had a height of 200 feet and gear ratio of 70 .


• The machine had 4 yaw motors which drove yaw drums. Yawing range was from 0 degrees to 950 degrees.


• Some terminologies:- PPE and JSA


• Pitch motors were driven by pitch drive. Pitching range was 0 degrees to 90 degrees.


• Pitch angle was marked as +7 or 0.


• Windfarm used to feed 220 KV lines.


• Lube oil was circulated with pumps.


• Generation voltage was 630 V. RPM was 1500.Active and reactice power was monitored.


• I saw Tool Kit register and tool Box Meeeting.


• An enginner explained how they overcame a problem by changing bolts into studs.


• Control was divided into parks of 24 motors.


• Capacitors were switched on based upon recative power requirement.


• Motors were first fed from grid, then they started generating.


• Battery supply was used for pitching in case of grid supply faliure.


• Theft was a major proble. We enjoyed tea made with biogas.


• Electronis was thyristor based.