DE2444948A1 - Rotational speed control for small wind turbine - maintains rotor speed and generator voltage independent of wind speed above specific level - Google Patents

Rotational speed control for small wind turbine - maintains rotor speed and generator voltage independent of wind speed above specific level

Info

Publication number
DE2444948A1
DE2444948A1 DE19742444948 DE2444948A DE2444948A1 DE 2444948 A1 DE2444948 A1 DE 2444948A1 DE 19742444948 DE19742444948 DE 19742444948 DE 2444948 A DE2444948 A DE 2444948A DE 2444948 A1 DE2444948 A1 DE 2444948A1
Authority
DE
Germany
Prior art keywords
speed
rotor
blades
wind
above specific
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
DE19742444948
Other languages
German (de)
Inventor
Wolfgang Wienpahl
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Priority to DE19742444948 priority Critical patent/DE2444948A1/en
Publication of DE2444948A1 publication Critical patent/DE2444948A1/en
Pending legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
    • F03D—WIND MOTORS
    • F03D7/00—Controlling wind motors 
    • F03D7/02—Controlling wind motors  the wind motors having rotation axis substantially parallel to the air flow entering the rotor
    • F03D7/022—Adjusting aerodynamic properties of the blades
    • F03D7/0224—Adjusting blade pitch
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05B—INDEXING SCHEME RELATING TO WIND, SPRING, WEIGHT, INERTIA OR LIKE MOTORS, TO MACHINES OR ENGINES FOR LIQUIDS COVERED BY SUBCLASSES F03B, F03D AND F03G
    • F05B2260/00—Function
    • F05B2260/70—Adjusting of angle of incidence or attack of rotating blades
    • F05B2260/74—Adjusting of angle of incidence or attack of rotating blades by turning around an axis perpendicular the rotor centre line
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05B—INDEXING SCHEME RELATING TO WIND, SPRING, WEIGHT, INERTIA OR LIKE MOTORS, TO MACHINES OR ENGINES FOR LIQUIDS COVERED BY SUBCLASSES F03B, F03D AND F03G
    • F05B2260/00—Function
    • F05B2260/70—Adjusting of angle of incidence or attack of rotating blades
    • F05B2260/75—Adjusting of angle of incidence or attack of rotating blades the adjusting mechanism not using auxiliary power sources, e.g. servos
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05B—INDEXING SCHEME RELATING TO WIND, SPRING, WEIGHT, INERTIA OR LIKE MOTORS, TO MACHINES OR ENGINES FOR LIQUIDS COVERED BY SUBCLASSES F03B, F03D AND F03G
    • F05B2260/00—Function
    • F05B2260/70—Adjusting of angle of incidence or attack of rotating blades
    • F05B2260/77—Adjusting of angle of incidence or attack of rotating blades the adjusting mechanism driven or triggered by centrifugal forces
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00—Energy generation through renewable energy sources
    • Y02E10/70—Wind energy
    • Y02E10/72—Wind turbines with rotation axis in wind direction

Abstract

In some conventional designs, speed regulation of generator-rotors is effected by adjusting the blades using the centrifugal moment of weights. This results in a marked variation in rotational speed as well as charging current whenever the wind speed and load fluctuates. To overcome thus the rotor blades are rotated spirally and mounted on hollow pins located radially to the axis. The blades are hinge-linked to a central disc each via a guide ball bearing in order to avoid the danger of an imbalance in the rotor. In addition variable friction coefficients for the rotor blade mountings are also employed.

Description

Titel: I?rehzahlre ge lung für Kleinwindturbinen " Anwendungsgebiet: Die Ereindung betrifft eine Drehzahlregelung von Rotoren von Kleinwindturbinen zur Stromversorgung von Wochenendhäusern und Wohneinheiten in Entwicklungsgebieten.Title: Speed regulation for small wind turbines "Field of application: The connection concerns a speed control of rotors of small wind turbines for the power supply of weekend houses and residential units in development areas.

Zweck: Bei Schnelläuferturbinen u/v # 4 ist eine Drehzahlregelung erforderlich, um zu verhindern, daß bei hohen Windgeschwindigkeiten eine Zerstörung des Generators durch Überdrehzahl, sowie des Rotors durch Fliehkraft und des Mastes durch Schwingungsanregung durch nie ganz zu vermeidende Unwucht des Rotors stattfindet.Purpose: With high-speed turbines u / v # 4 is a speed control required to prevent destruction at high wind speeds the generator through overspeed, as well as the rotor through centrifugal force and the mast takes place through vibration excitation through unbalance of the rotor, which can never be completely avoided.

Außerdem dient die Drehzahlregelung zu:r Konstanthaltung des Ladestroms der angeschlossenen Akkumulatorenbatterie. In addition, the speed control serves to: r keep the charging current constant the connected accumulator battery.

Stand der Technik: Es ist bekannt, daß zur Drehzahlregelung von Rotoren von Kleinwindturbinen durch Vorstellung der Flügelblätter das Zentrifugalmoment von Gewichten (Lubing Maschinenfabrik, 2847 Barnstorl) ausgenu-tzt wird.Prior art: It is known that for speed control of rotors the centrifugal moment of small wind turbines by imagining the blades of weights (Lubing Maschinenfabrik, 2847 Barnstorl) is used.

Kritik des Standes: hierbei ist allerdings ein sehr großer P.roportionalbereich bedingt durch den nichtlinearen Verlauf des Verstellmomentes ( Blatt 2 ) nicht zu vermeiden.Criticism of the stand: here, however, there is a very large proportional range due to the non-linear course of the adjustment torque (sheet 2) not to avoid.

Das bedeutet eine starke Drehzahländerung sowie Ladestromänderung des Generators bei wechselnder Windgeschwindigkeit und Last, Aufgabe: Der Erfindung liegt die Aufgabe zugrunde den Proportionalbereich der Regelung ziemlich klein zu halten und somit die Drehzahl des Rotors und die Spannung des Generators oberhalb einer bestimmten Windgeschwindigkeit nahezu unabhängig von Windgeschwindigkeit und Belastung zu halten. This means a sharp change in speed as well as a change in the charging current of the generator with changing wind speed and load, task: the invention the task is based on the proportional range of the regulation to be quite small hold and thus the speed of the rotor and the voltage of the generator above a certain wind speed almost independent of wind speed and To hold the load.

Lösung Diese Aufgabe wird erfindungsgemäß dadurch gelöst, daß die Rotorblätter Schraubenförmig drehbar auf radial Zur Achse stehenden Hohl zapfen gelagert sind. Durch Fliehkraft werden die Rotorblätter gegen Federzug nach außen gezogen und gleichzeitig verdreht.Solution This object is achieved according to the invention solved, that the rotor blades can be rotated helically on a hollow standing radially to the axis cones are stored. Centrifugal force causes the rotor blades to move against the spring tension pulled outside and twisted at the same time.

Weitere husgestaltung: Um durch unterschiedliche Reibungskoeffizienten der Rotorblattlagerung sowie des Gewichts der Rotorblätter hervorgerufene verschiedene Auslenkung der Rotorblätter und damit die Gefahr einer Unwucht des Rotors zu verhindern sind die Rotorblätter über je ein Führungskugellager an eine Zentrierscheibe angelenkt.Further house design: order through different coefficients of friction the rotor blade bearing and the weight of the rotor blades caused various To prevent deflection of the rotor blades and thus the risk of an imbalance in the rotor the rotor blades are each articulated to a centering disk via a guide ball bearing.

Erzielbare Vorteile: Dadurch, daß nahezu das gesamte Gewicht des Rotors zur Erzielung der Fliehkraft ausgenutzt werden kann, laßt sich ein sehr hohes Verstellmoment erzielen. Dadurch werden die Einflüsse der Störmomente, hervorgerufen durch das Zentrifugalmoment des Flügels, das serodynamische Moment, sowie Last- und Windgeschwindigkeitsänderung stark herabgemindert.Achievable advantages: Because almost the entire weight of the rotor can be used to achieve the centrifugal force, can be a very high adjustment achieve. Thereby the influences of the disturbance torques caused by the Centrifugal moment of the wing, the serodynamic moment, as well as load and wind speed change greatly reduced.

( siehe Blatt 3 u. Zeichnungs-Nr. 62 ) Beschreibung eines Ausführungsbeispiels: Ein Ausführungsbeispiel der Erfindung ist in der Zeichnungs-Nr. 56 dargestellt und wird im folgenden näher beschrieben. (see page 3 and drawing no.62) Description of an exemplary embodiment: An embodiment of the invention is shown in drawing no. 56 shown and is described in more detail below.

Auf der Windrotorachse ist eine Nabe befestigt in die radial 3 Hohlzapfen eingeschweißt sind. A hub is attached to the 3 radial hollow pins on the wind rotor axis are welded.

Im in Innern der Hohlzapfen sind die Regelfedern untergebracht. Auf diesen Hohlzapfen sind die Rotorblätter drehbar gelagert. Die schraubenförmige Verdrehung der Rotorblätter wird durch eine Spiralnut in der Rotorblattlageraußenbüchse und der darin eingreifenden fest auf den Hohl zapfen befestigten Führungsscheibe erzielt. The regulating springs are housed in the interior of the hollow pegs. on The rotor blades are rotatably mounted on these hollow pegs. The helical twist the rotor blades are driven by a spiral groove in the rotor blade bearing outer sleeve and achieved the engaging firmly on the hollow pin attached guide washer.

Diese eifache Art der Ausführung wurde gewühlt, um auch einfach ausgerüstete Werkstätten die Herstellung dieser Regelung zu ermöglichen Die schraubenförmige Verdrehung läßt sich selbstverständlich auch durch eine kugelgelagerte Schraubenspindel erzielen, um die Wartung der Regelung auf ein Minimum zu reduzieren. This simple type of execution was chosen to also be simply equipped Workshops the Making this scheme to allow the helical Rotation can of course also be achieved by means of a ball-bearing screw spindle in order to reduce the maintenance of the control to a minimum.

Die Zentrierung der Rotorblätter abernimst die konzentrisch auf der Nabe befestigte Zentrierscheibe. The centering of the rotor blades is concentric on the Centering disc attached to the hub.

An der Zentrierscheibe sind 3 Gelenkstangen befestigt, die die Bewegung der Sentrier scheibenzapfen gleichmäßig auf je ein drehbar auf den Rotorblättern angeordnetes Kugellager gehause übertragen. 3 joint rods are attached to the centering disc, which control the movement the centering disc pin can be rotated evenly on each of the rotor blades arranged ball bearing housing transferred.

Die Kugellager übertragen die Längsbewegung der Kugellagergehäuse auf die Rotorblätter. The ball bearings transmit the longitudinal movement of the ball bearing housing on the rotor blades.

Die Rotorblattlageraußenbüchse wurde verlängert, um die durch Rotorblattgewicht uild Drehzahl vorgegebene Federkonstante zu erzielen. The rotor blade bearing outer sleeve was lengthened by the weight of the rotor blade uild speed to achieve a given spring constant.

Das Rotorblatt ist an die Rotorblattlagerbüchse angeflanscht. The rotor blade is flanged to the rotor blade bearing bush.

Patentansprüche: Oberbegriff: 0 Drehzahlregelung des Rotors einer Kleinwindturbine zur Vermeidung von Schäden an Generator, Rotor, Mast und angeschlossener Batterie.Claims: Generic term: 0 speed control of the rotor Small wind turbine to avoid damage to the generator, rotor, mast and connected Battery.

Kennzeichnender Teil: Dadurch gekennzeichnet, daß zur Erzeugung eines hohen Verstellmomentes der Regelung die Rotorblätter selbst herangezogen werden, um Störeinflüsse von Zentrifugalmoment und aerodynamischem Moment der Rotorblätter sowie wechselnder Windgeschwindigkeit und Last auf die Drehzahl weitgehend auszuschalten.Identifying part: Identified by the fact that in order to generate a high adjustment torque of the control, the rotor blades themselves are used, to disruptive influences of centrifugal moment and aerodynamic moment of the rotor blades as well as changing wind speed and load on the engine speed to a large extent.

Claims (1)

Oberbegriff des Unteranspruchs: Dadurch gekennzeichnet,daß durch unterschiedliche Reibungskoeffizienten der Rotorblattlagerung sowie des Eigengewichts der Rotorblätter hervorgerufene verschiedene Auslenkung der Rotorblätter und somit die Gefahr einer Unwucht durch die Füiirungskugellagerung in Verbindung mit der Zentrierscheibe verhindert wird.Preamble of the dependent claim: characterized in that by different Friction coefficient of the rotor blade bearings as well as the weight of the rotor blades caused various deflection of the rotor blades and thus the risk of Imbalance prevented by the guide ball bearing in conjunction with the centering disc will. L e e r s e i t eL e r s e i t e
DE19742444948 1974-09-20 1974-09-20 Rotational speed control for small wind turbine - maintains rotor speed and generator voltage independent of wind speed above specific level Pending DE2444948A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE19742444948 DE2444948A1 (en) 1974-09-20 1974-09-20 Rotational speed control for small wind turbine - maintains rotor speed and generator voltage independent of wind speed above specific level

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19742444948 DE2444948A1 (en) 1974-09-20 1974-09-20 Rotational speed control for small wind turbine - maintains rotor speed and generator voltage independent of wind speed above specific level

Publications (1)

Publication Number Publication Date
DE2444948A1 true DE2444948A1 (en) 1976-04-08

Family

ID=5926289

Family Applications (1)

Application Number Title Priority Date Filing Date
DE19742444948 Pending DE2444948A1 (en) 1974-09-20 1974-09-20 Rotational speed control for small wind turbine - maintains rotor speed and generator voltage independent of wind speed above specific level

Country Status (1)

Country Link
DE (1) DE2444948A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0226052A2 (en) * 1985-12-18 1987-06-24 Man Gutehoffnungshütte Gmbh Multiple-blade rotor for wind power plant

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0226052A2 (en) * 1985-12-18 1987-06-24 Man Gutehoffnungshütte Gmbh Multiple-blade rotor for wind power plant
EP0226052A3 (en) * 1985-12-18 1988-10-12 Man Gutehoffnungshütte Gmbh Multiple-blade rotor for wind power plant

Similar Documents

Publication Publication Date Title
DE4402184C2 (en) Multi-pole synchronous generator for gearless horizontal-axis wind turbines with nominal powers of up to several megawatts
DE2506160C3 (en) Wind power plant
DE3903399A1 (en) Wind power installation
DE102008037609A1 (en) Rotor blades with multiple sections for wind turbines and wind turbines with these
DE102006004096A1 (en) Drive train between rotor and gearbox of wind power system has second rotor bearing of torque bearing form on input side in gearbox to receive partial rotor forces, torques and weight forces and pass them directly to torque bracket
JPS59126084A (en) Wind mill
EP1457673A1 (en) Wind turbine rotor support arrangement.
DE2734938A1 (en) Wind turbine generator with horizontal axis - uses solar radiation and anemometer-type blades to turn rotors on army to use Magnus effect
DE102007016879A1 (en) Wind power plant for use on land and offshore strive, has rotor with aerodynamic function elements divided into two approximately equivalent parts, and circular construction part supporting active rotor parts of ring generator
EP1277954A2 (en) Wind turbine
DE2444948A1 (en) Rotational speed control for small wind turbine - maintains rotor speed and generator voltage independent of wind speed above specific level
EP0037002A1 (en) Bearing application for the rotor of a wind power station
DE672606C (en) Wind power machine with slewing mechanism
DE3501807A1 (en) Fluid-flow engine for obtaining energy
DE837230C (en) Method and device for power control of wind turbines for driving machines with at least approximately constant speed to be kept
DE956390C (en) Wind turbine
DE4005685A1 (en) Vertical wind turbine driving electrical ring generators - has rotor supported from mast by relatively small pendulum bearing
CN207274961U (en) Variable-pitch propeller and unmanned plane
DE3319165A1 (en) New type of synchronous sail blade adjustment in horizontal wind power units (windwheels) with one or more blades
DE4331073C1 (en) Wind power converter having as a free gyroscope an axis of rotation which preferably extends vertically
EP0009052A1 (en) Aerodynamically self-governed wind turbine
DE102017010632A1 (en) High-performance wind turbine
DE580337C (en) Wind power machine with a horizontal axis of rotation, on the wing ends of which auxiliary wind turbines are attached
DE2834786C2 (en) windmill
EP0103042A1 (en) Fan comprising automatically adjustable blades about its longitudinal axis to avoid undesirable rotational speed

Legal Events

Date Code Title Description
OD Request for examination
OHW Rejection