06566764 is referenced by 139 patents and cites 9 patents.

A variable speed wind turbine is disclosed comprising a turbine rotor that drives a doubly-fed induction generator, a matrix converter which converts variable frequency output into constant frequency output, and a control unit and a protection circuit for the matrix converter. Power is circulated in the system allowing for sensorless detection of rotor position and better output ratios of power from the system.

Title
Variable speed wind turbine having a matrix converter
Application Number
9/862316
Publication Number
6566764 (B2)
Application Date
May 23, 2001
Publication Date
May 20, 2003
Inventor
Lars Helle
Aalborg
US
Anders V Rebsdorf
Lemvig
US
Agent
Finnegan Henderson Farabow Garrett & Dunner
US
Assignee
Vestas Wind Systems R&D
US
IPC
H02P 9/48
View Original Source