×

Starting method for rotating machine and starting method for wind turbine generator

  • US 8,887,868 B2
  • Filed: 07/29/2010
  • Issued: 11/18/2014
  • Est. Priority Date: 02/19/2010
  • Status: Active Grant
First Claim
Patent Images

1. A starting method of a wind turbine generator which includes a main shaft connected to a wind turbine rotor, a main bearing rotatably supporting said main shaft and a main bearing lubricant pump circulating lubricant through said main bearing, said method comprising:

  • rotating said main shaft and raising a temperature of said main bearing in a state in which said main bearing lubricant pump is not operated, wherein a rotational velocity of said main shaft is controlled in a state in which a generator connected to said main shaft is placed into a no-load state in the raising of the temperature of said main bearing; and

    operating said main bearing lubricant pump to start supplying the lubricant to said main bearing after the raising of the temperature of said main bearing,wherein the no-load state is a state in which a generator torque of the generator is zero and a rotor of the generator remains connected to the main shaft.

View all claims
  • 1 Assignment
Timeline View
Assignment View
    ×
    ×