us1766765a - wind rotor - google patents

NIKHIL A. KORATKAR John A. Clark and Edward T. Crossan Professor

Nikhil Koratkar has 220 journal papers, 1 book, 4 book chapters and 5 patents. 25,000 citations (Google Scholar) with an H-index = 75 69 publications in journals with impact factor 10. One in Science, One in Nature, Three in Nature Materials, Four

Oyster Perpetual Movement

Hidden away in its waterproof case, the Perpetual movement remains invisible to the wearer of the watch. Only Rolex-certified watchmakers are able to access it with their special tools. Yet, when it has the honour of being seen, this exquisite mechanism known the

WES

The prediction of the rotor performance was based on a design tool, HAWTOPT, for multipoint wind turbine design. The tool is basically a blade element momentum (BEM) code with the ability to also compute energy production and with the further ability also to optimize the operational data (i.e. pitch and revolutions per minute, rpm), using numerical optimization.

System Design of a Novel Tilt

Quadrotor helicopters are among one of the most interested topics in the robotics field in the last decade. Regularly, a simple quadrotor has four fixed motors, giving the availability of controlling 4 independent inputs for a 6 degrees-of-freedom (DOF) system. In the recent studies, there is a tendency on changing the controlled system from fixed actuators to the ones that can have dynamic

Four Decades of Research Into the Augmentation

The design and development of wind turbines is increasing throughout the world to offer electricity without paying much to the global warming. The Savonius wind turbine rotor, or simply the Savonius rotor, is a drag-based device that has a relatively low efficiency.

Gust loads on aircraft

Gust loads on aircraft - Volume 123 Issue 1266 1.0 INTRODUCTION Aviation meteorology has been an important area in the aeronautical research field since the time of the first flight by the Wright brothers (Reference Dines 1).Meteorological conditions, such as gust (Reference Etkin 2), icing (Reference Cao, Wu, Su and Xu 3), heavy rain (Reference Cao, Wu and Xu 4), etc., have been well known to

National Renewable Energy Laboratory (NREL) Home Page

NREL Joins Industry in Leading Cybersecurity Threat Evaluation for the U.S. Wind Fleet April 29, 2021 Popular Publications The Los Angeles Renewable Energy Study (LA100) U.S. Solar Photovoltaic System and Energy Storage Cost Benchmark: Q1 2020

Gust loads on aircraft

Gust loads on aircraft - Volume 123 Issue 1266 1.0 INTRODUCTION Aviation meteorology has been an important area in the aeronautical research field since the time of the first flight by the Wright brothers (Reference Dines 1).Meteorological conditions, such as gust (Reference Etkin 2), icing (Reference Cao, Wu, Su and Xu 3), heavy rain (Reference Cao, Wu and Xu 4), etc., have been well known to

VESTAS WIND SYSTEMS A/S Inventions, Patents and

VESTAS WIND SYSTEMS A/S has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

Developing an efficient protocol for monitoring eagle

2018/12/12Wind energy is considered a "green" energy source, but concerns exist over risks to wildlife from wind facilities [4–7]. In particular, the impacts of wind facilities on bald ( Haliaeetus leucocephalus ) and golden ( Aquila chrysaetos ) eagles have received attention in the USA; both species are susceptible to collisions with wind turbines [ 8, 9 ].

Lifting Wind Turbine Components From a Floating

Offshore wind energy is experiencing rapid development and is expected to make up an even bigger part of the world's future energy mix. New installation concepts for offshore wind farms involve lifting operations of wind turbine components from floating vessels.

Wind farm-LA coordinated operation mode and dispatch model in wind power accommodation promotion [J], Energies, vol. 11, no.5, p.604-614, May 2018. [22]Shiwei Xia, Siqi Bu*, Xin Zhang, Yan Xu, Bin Zhou, and Jiebei Zhu, Model reduction strategy of doubly-fed induction generator-based wind farms for power system small-signal rotor angle stability analysis, Applied Energy, vol. 222,p. 608-620

Three

The Permanent Magnet Synchronous Machine block implements a three-phase or a five-phase permanent magnet synchronous machine. Limitations and Assumptions When you use Permanent Magnet Synchronous Machine blocks in discrete systems, you might have to use a small parasitic resistive load, connected at the machine terminals, to avoid numerical oscillations.

Innovation in Wind Turbine Design

Innovation in Wind Turbine Design addresses the fundamentals of design, the reasons behind design choices, and describes the methodology for evaluating innovative systems and components. Always referencing a state of the art system for comparison, Jamieson

Flywheel Energy Storage

They also have lower rotor losses and winding inductances, making them more workable in a vacuum operating environment and suited to the rapid energy transfer typical of flywheel applications. The energy storage itself is performed using a three-phase IGBT-based PWM inverter/rectifier setup.

Three

The Permanent Magnet Synchronous Machine block implements a three-phase or a five-phase permanent magnet synchronous machine. Limitations and Assumptions When you use Permanent Magnet Synchronous Machine blocks in discrete systems, you might have to use a small parasitic resistive load, connected at the machine terminals, to avoid numerical oscillations.

Floating wind turbine with wave energy converter —

wind turbine rotor (1) mounted on a tower (3) of a spar and tower structure (4, 3) comprising a generally vertical (121). The so modified floating wind turbine will then be more efficient, particularly for the lower wind speed range. https://patents.google

Toyota US Patents, Patent Applications and Patent Search

Search for Toyota Patents and Patent Applications Filed with USPTO Abstract: A vehicle function control device that controls functions of a vehicle includes an electronic control unit configured to determine whether there is a terminal device performing communication with an in-vehicle communication device around the in-vehicle communication device using the in-vehicle communication device

Savonius wind turbine — Wikipedia Republished // WIKI 2

Savonius wind turbines are a type of vertical-axis wind turbine (VAWT), used for converting the force of the wind into torque on a rotating shaft. The turbine consists of a number of aerofoils, usually—but not always—vertically mounted on a rotating shaft or framework, either ground stationed or tethered in airborne systems.

Trapped Cylindrical Flow With Multiple Inlets for

Savonius vertical axis wind turbines (VAWTs) typically suffer from low efficiency due to detrimental drag production during one half of the rotational cycle. The present study examines a stator assembly created with the objective of trapping cylindrical flow for

Rotationstransformator – Wikipedia

Ein Rotationstransformator besteht aus zwei Hlften: einem fix stehenden Stator mit der ersten Wicklung (in der nebenstehenden Abbildung blau) und einem dazu auf einer Achse rotierenden Rotor mit der zweiten Wicklung (rot). Zur Fhrung des magnetischen Flusses Φ zwischen den beiden Wicklungen dient ein runder Kern, der die Wicklungen umgibt und der in zwei Hlften (Stator und Rotor

Flying‐start and continuous operation of a

In wind energy conversion systems of type 4, the critical operating point in permanent‐magnet generators (PMGs) is the moment of switching on the generator‐side converter (GSC). The induced back‐electromotive force (EMF) acting on PMG terminals can cause

Flywheel Energy Storage

They also have lower rotor losses and winding inductances, making them more workable in a vacuum operating environment and suited to the rapid energy transfer typical of flywheel applications. The energy storage itself is performed using a three-phase IGBT-based PWM inverter/rectifier setup.

How to Start a Wind Farm Business in 18 Steps

The speed of the wind turns the blades of a rotor (between 10 and 25 turns per minute), a source of mechanical energy. Wind turbines convert the kinetic energy in the wind into mechanical power. This mechanical power can be used for specific tasks such as grinding grain or pumping water or a generator can convert this mechanical power into clean electricity.

Toyota US Patents, Patent Applications and Patent Search

Search for Toyota Patents and Patent Applications Filed with USPTO Abstract: A vehicle function control device that controls functions of a vehicle includes an electronic control unit configured to determine whether there is a terminal device performing communication with an in-vehicle communication device around the in-vehicle communication device using the in-vehicle communication device

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