公开(公告)号：US20160177916A1

公开(公告)日：2016-06-23

申请号：US14909320

申请日：2014-07-30

Applicant: Vestas Wind Systems A/S

Inventor： Dave Dent ,  Jonas Romblad ,  Sonia Salcedo Serra

IPC: F03D1/06 ,  F03D1/00

CPC classification number: F03D1/0641 ,  F03D1/0675 ,  F03D13/10 ,  F05B2230/31 ,  F05B2230/41 ,  F05B2240/301 ,  F05B2250/71 ,  F05B2250/711 ,  Y02E10/721 ,  Y02P70/523

Abstract: A blade for a wind turbine defines an airfoil with a leading edge section and a trailing edge section, notably a flat-back trailing edge. A rounded connecting section interconnects a pressure side section of the airfoil and the trailing edge section. The rounded connecting section attaches to the pressure side section at a transition point, in which the pressure side section's tangent does not coincide with the rounded connecting section's tangent, so that the outer surface of the airfoil has a sharp corner at said transition point. The truncated radius, i.e. geometrical discontinuity, thus formed at the transition between the pressure side section and the trailing edge section increases the aerodynamically effective surface of the pressure side and enables forced and hence controlled flow separation without compromising ease of manufacture and structural stability of a fibre-reinforced structure making up a shell of the blade.

Abstract translation: 用于风力涡轮机的叶片限定具有前缘部分和后缘部分的翼型件，特别是平背后缘。 圆形连接部分将翼型件的压力侧部分与后缘部分相互连接。 圆形连接部分在压力侧部分的切线与圆形连接部分的切线不一致的过渡点附接到压力侧部分，使得翼型件的外表面在所述转变点处具有尖锐的拐角。 因此，在压力侧部分和后缘部分之间的过渡处形成的截头半径即几何不连续性增加了压力侧面的空气动力学有效表面，并且能够在不影响制造的容易性和易于制造的结构稳定性的情况下强制并因此控制流动分离 纤维增强结构组成叶片的外壳。

公开(公告)号：US20240167450A1

公开(公告)日：2024-05-23

申请号：US18549367

申请日：2022-03-09

Applicant: Vestas Wind Systems A/S

Inventor： Francesco Grasso ,  Rens Christiaan Verhoef ,  Gurmukh Singh ,  Dave Dent

IPC: F03D1/06

CPC classification number: F03D1/0641 ,  F03D1/0687

Abstract: A wind turbine blade having a length of at least 100 meters comprising: a root end (and a tip end, the blade extending in a spanwise direction from the root end to the tip end, the root end having a substantially circular profile with a root end diameter, and a profile of the blade transitioning into a lift generating profile moving in the spanwise direction from the root end towards the tip end; a leading edge and a trailing edge, the blade extending in a chordwise direction along a chord from the leading edge to the trailing edge; an inboard region extending in the spanwise direction from the root end to a distal end, the inboard region having a length defined between the root end and the distal end; wherein in the inboard region, the chord of the blade is within 5% of the root end diameter and the inboard region has a length of at least 10% span of the blade.

公开(公告)号：US10151296B2

公开(公告)日：2018-12-11

申请号：US14909320

申请日：2014-07-30

Applicant: Vestas Wind Systems A/S

Inventor： Dave Dent ,  Jonas Romblad ,  Sonia Salcedo Serra

IPC: F03D1/06 ,  F03D13/10

Abstract: A blade for a wind turbine defines an airfoil with a leading edge section and a trailing edge section, notably a flat-back trailing edge. A rounded connecting section interconnects a pressure side section of the airfoil and the trailing edge section. The rounded connecting section attaches to the pressure side section at a transition point, in which the pressure side section's tangent does not coincide with the rounded connecting section's tangent, so that the outer surface of the airfoil has a sharp corner at said transition point. The truncated radius, i.e. geometrical discontinuity, thus formed at the transition between the pressure side section and the trailing edge section increases the aerodynamically effective surface of the pressure side and enables forced and hence controlled flow separation without compromising ease of manufacture and structural stability of a fiber-reinforced structure making up a shell of the blade.