公开(公告)号：US12173685B2

公开(公告)日：2024-12-24

申请号：US18559349

申请日：2022-03-07

Applicant: Vestas Wind Systems A/S

Inventor： Lasse Godballe Andersen ,  Erik Garde ,  Kris Kristensen Riisager

IPC: F03D1/06

Abstract: A pitch system for rotating a blade of a wind turbine relative to a hub. The pitch system comprises a blade bearing including an inner bearing ring and an outer bearing ring, wherein the outer bearing ring is rotatable relative to the inner bearing ring, and an actuator system configured to control relative rotational movement between the inner bearing ring and outer bearing ring, comprising. The actuator system comprises a first load transfer beam arrangement spanning at least first and second fixing positions associated with the inner bearing ring, a second load transfer beam arrangement spanning at least first and second fixing positions associated with the outer bearing ring, and a first linear actuator coupled between the first load transfer beam arrangement and the second load transfer beam arrangement. A benefit of the pitch system of the invention is that it achieves a reduction in mass yet retains a stiff connection between the hub and an associated blade. Therefore, larger and heavier blades can be coupled to the pitch system whilst mitigating a proportional increase in mass of the pitch system.

公开(公告)号：US20240240608A1

公开(公告)日：2024-07-18

申请号：US18559349

申请日：2022-03-07

Applicant: Vestas Wind Systems A/S

Inventor： Lasse Godballe Andersen ,  Erilk Garde ,  Kris Kristensen Riisager

IPC: F03D1/06

CPC classification number: F03D1/0667 ,  F05B2260/50 ,  F05B2260/79

Abstract: A pitch system for rotating a blade of a wind turbine relative to a hub. The pitch system comprises a blade bearing including an inner bearing ring and an outer bearing ring, wherein the outer bearing ring is rotatable relative to the inner bearing ring, and an actuator system configured to control relative rotational movement between the inner bearing ring and outer bearing ring, comprising. The actuator system comprises a first load transfer beam arrangement spanning at least first and second fixing positions associated with the inner bearing ring, a second load transfer beam arrangement spanning at least first and second fixing positions associated with the outer bearing ring, and a first linear actuator coupled between the first load transfer beam arrangement and the second load transfer beam arrangement. A benefit of the pitch system of the invention is that it achieves a reduction in mass yet retains a stiff connection between the hub and an associated blade. Therefore, larger and heavier blades can be coupled to the pitch system whilst mitigating a proportional increase in mass of the pitch system.