US 11,939,955 B2
Condition monitoring system
Hitoshi Saito, Kuwana (JP); and Takashi Haseba, Kuwana (JP)
Assigned to NTN CORPORATION, Osaka (JP)
Appl. No. 17/599,518
Filed by NTN CORPORATION, Osaka (JP)
PCT Filed Mar. 6, 2020, PCT No. PCT/JP2020/009556
§ 371(c)(1), (2) Date Sep. 28, 2021,
PCT Pub. No. WO2020/195691, PCT Pub. Date Oct. 1, 2020.
Claims priority of application No. 2019-062680 (JP), filed on Mar. 28, 2019; and application No. 2020-023495 (JP), filed on Feb. 14, 2020.
Prior Publication US 2022/0170446 A1, Jun. 2, 2022
Int. Cl. F03D 17/00 (2016.01); F03D 7/02 (2006.01); F03D 80/70 (2016.01)
CPC F03D 17/00 (2016.05) [F03D 7/0264 (2013.01); F03D 80/70 (2016.05); F05B 2240/50 (2013.01); F05B 2260/4031 (2013.01); F05B 2260/80 (2013.01); F05B 2270/327 (2013.01); F05B 2270/807 (2013.01); Y02E 10/72 (2013.01)] 6 Claims
OG exemplary drawing
 
1. A condition monitoring system that monitors a condition of a wind turbine generator, the condition monitoring system comprising:
a monitoring terminal;
an acceleration sensor; and
a data processor, wherein
the data processor calculates a diagnostic parameter from data measured by the acceleration sensor, determines a degree of damage to a bearing or a gear included in the wind turbine generator based on the diagnostic parameter, and controls the monitoring terminal to show information indicating a degree of suppression of electric power generated by the wind turbine generator in accordance with the degree of damage to the bearing or the gear, and
the data processor increases a frequency of measurement by the acceleration sensor when magnitude of the diagnostic parameter exceeds a threshold value.