公开(公告)号：US20120301296A1

公开(公告)日：2012-11-29

申请号：US13576849

申请日：2011-02-16

Applicant: David Greenblatt ,  Benyamin Sasson ,  Magen Schulman

Inventor： David Greenblatt ,  Benyamin Sasson ,  Magen Schulman

IPC: F03D7/06 ,  F03D11/00 ,  F03D3/00

CPC classification number: H04L65/105 ,  F03D7/06 ,  H04L65/1053 ,  Y02E10/74

Abstract: A control system is presented for controlling operation of a vertical axis wind turbine (VAWT) for generating energy from an incoming fluid flow. The control system comprises at least one flow affecting arrangement associated with at least one blade of the VAWT and a control unit connected to said flow affecting arrangement, the flow affecting arrangement comprising two flow affecting units located in two opposite sides of the blade respectively at a leading edge thereof, each flow affecting unit being operable for creating a blowing jet at the respective side of the blade thereby inducing an increase in a fluid flow momentum, the control unit being configured and operable for selectively activating the flow affecting units in alternating fashion according to a predetermined time pattern to oscillate the blowing jet at the opposite sides of the blade.

Abstract translation: 提出了一种用于控制用于从进入的流体流中产生能量的垂直轴风力涡轮机（VAWT）的操作的控制系统。 控制系统包括与VAWT的至少一个叶片相关联的至少一个流动影响装置和连接到所述流动影响装置的控制单元，所述流动影响装置包括分别位于叶片的两个相对侧中的两个流动影响单元 每个流动影响单元可操作用于在叶片的相应侧面处产生喷射射流，从而引起流体流动动量的增加，该控制单元被构造和操作以用于以交替方式选择性地启动流动影响单元 到预定的时间模式，以便在叶片的相对侧振荡喷吹。

公开(公告)号：US20080003103A1

公开(公告)日：2008-01-03

申请号：US11239436

申请日：2005-09-22

Applicant: David Greenblatt

Inventor： David Greenblatt

IPC: B64C27/00

CPC classification number: B64C27/001 ,  B64C27/46 ,  B64C27/463

Abstract: To control vortices originating at the tips of a rotor's blades rotating through the air at a revolution frequency f, separation control device(s) are actuated to periodically introduce perturbations into the airflow moving over the blades. The periodic introduction of perturbations is controlled in accordance with a periodic modulating frequency of introduction f0 while the frequency of the perturbations so-introduced is designated as fe. Vortex control is achieved when the periodic modulating frequency of introduction f0 satisfies the relationship nf≦f0≦fe where n is the number of blades.

Abstract translation: 为了控制起始于以转速f旋转通过空气的转子叶片的尖端的涡流，分离控制装置被致动以周期性地将扰动引入到在叶片上移动的气流中。 扰动的周期性引入根据引入的周期性调制频率f 0被控制，而被引入的扰动的频率被指定为f∈E。 当导入周期性调制频率f <0>满足关系<？in-line-formula description =“In-line Formulas”end =“lead”？> nf <= F < ＆lt;＆lt;＆lt;＆lt;＆lt;＆lt;＆lt;＆lt;＆lt;＆lt; in-line-formula description =“In-line Formulas”end =“tail”？>其中n是刀片数。

公开(公告)号：US06267331B1

公开(公告)日：2001-07-31

申请号：US09092271

申请日：1998-06-05

Applicant: Israel Wygnanski ,  David Greenblatt ,  Avi Seifert

Inventor： Israel Wygnanski ,  David Greenblatt ,  Avi Seifert

IPC: B64C2100

CPC classification number: B64C21/04 ,  B64C21/08 ,  B64C23/04 ,  B64C27/467 ,  B64C2230/02 ,  B64C2230/04 ,  B64C2230/06 ,  Y02T50/166

Abstract: A method for inhibiting dynamic stall of an airfoil by causing a fluid to flow out of at least one location on the airfoil. This location may be anywhere on the airfoil; but if the location is within one-quarter of the airfoil chord from the leading edge and the fluid flow has non-zero net mass flux, then the fluid flow is modulated at a frequency described by a Strouhal ratio greater than one.

Abstract translation: 一种用于通过使流体从翼型上的至少一个位置流出而阻止翼型件的动态失速的方法。 这个位置可能在翼型的任何地方; 但是如果位置在前缘的翼型弦的四分之一内，并且流体流具有非零的净质量通量，则流体流以由Strouhal比大于1的频率调制。

公开(公告)号：USD260571S

公开(公告)日：1981-09-08

申请号：US35860

申请日：1979-05-04

Applicant: David Greenblatt ,  Rick Spinoza

Designer： David Greenblatt ,  Rick Spinoza