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
  • F03D80/00—Details, components or accessories not provided for in groups F03D1/00 - F03D17/00
  • F03D80/80—Arrangement of components within nacelles or towers
• • 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
  • F05B2260/40—Transmission of power
  • F05B2260/403—Transmission of power through the shape of the drive components
  • F05B2260/4031—Transmission of power through the shape of the drive components as in toothed gearing
  • F05B2260/40311—Transmission of power through the shape of the drive components as in toothed gearing of the epicyclic, planetary or differential type
• • 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
  • F05B2260/79—Bearing, support or actuation arrangements therefor
• • 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
  • F05B2270/00—Control
  • F05B2270/60—Control system actuates through
• • 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
  • F05B2270/00—Control
  • F05B2270/60—Control system actuates through
  • F05B2270/602—Control system actuates through electrical actuators
• • 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
  • F05B2270/00—Control
  • F05B2270/60—Control system actuates through
  • F05B2270/604—Control system actuates through hydraulic actuators
• • 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

Definitions

• the invention relates to a wind turbine according to the closer defined in the preamble of claim 1.
• Wind turbines are known from the general state of the art.
• such a wind turbine has a wind driven rotor which rotates about a rotor axis.
• Adjust performance ratios and / or the existing wind speeds are known which must be supplied with point energy in order to adjust the rotor blades can.
• the adjusting devices are usually formed hydraulically or by electric motor.
• a central tube is typically arranged as a supply line for the place energy or the line energy transporting line elements around the rotor axis and projects into the rotor.
• this tube is non-rotatably connected to the rotor and is guided by a direction of power in the direction of the rotor arranged gear.
• the point energy is then from a fixed structure in the area of
• Rotor hub The structure makes it necessary that the transmission is designed so that via a spur gear or the like, a displacement of the drive shafts takes place because due to the centrally guided around the rotor axis tube and its implementation by the transmission no power transmitting components in the Range are possible.
• a spur gear so the main axis of the transmission is typically offset parallel to the rotor axis, so as to ensure the supply of job energy to the adjusting devices for the rotor blades can. This is correspondingly expensive and increases the space required in the area of a rotor bearing pulpit of the wind turbine.
• the object of the present invention is now to avoid these disadvantages and to provide a compact structure for a wind turbine, which allows a coaxial arrangement of all essential parts of the transmission to the rotor axis and continues to allow small peripheral speeds in the rotary feedthrough.
• the transmission comprises at least one planetary stage with a fixed planet carrier, and that the supply lines for job energy by the fixed planet carrier and a central arranged around the rotor axis feed channel.
• Feed channel is formed fixed.
• a directly connected to the fixed planetary carrier supply channel, which runs in a hollow output shaft of the rotor is ideal in terms of the supply of point energy into the rotor hub.
• the energy can then be fed directly or via lines extending into the area of the rotor hub via the stationary planet carrier and the supply channel.
• a rotary feedthrough for passing the point energy from the region of the feed channel are arranged to rotating with the rotor adjusting devices for the rotor blades in the rotor hub.
• Rotary unions in the area of the rotor hub are particularly easy and efficient to implement, since the rotor hub with a comparatively small
• Wind turbine it may further be provided that between the rotor and the at least one planetary stage at least one further gear stage is arranged coaxially on the rotor axis.
• a further optional gear stage which in turn may in turn be designed as a planetary stage, allows a corresponding implementation of the low rotor speed in the required comparatively high speed of an output shaft of the transmission, which at least indirectly drives a generator. Due to the division into several gear stages, the load on the individual gear stages is reduced and the size of the required translations is reduced.
• Wind turbine it may also be provided that between the transmission and the generator, a variable speed transmission is arranged with at least one hydrodynamic circuit for speed control.
• this d tunable variable transmission can be formed in particular coaxially to the rotor axis.
• Such variable-speed transmissions have been known for some time in the field of wind power and are described in more detail in particular by the German patent DE 103 14 757 B3. Their functionality is essentially that of the variable
• Input speed which is supplied by the fluctuating wind energy through the rotor, in a constant output speed for the generator
• Figure 1 is a relevant to the invention section of a wind turbine in a first possible embodiment
• FIG. 2 shows a section corresponding to the illustration in FIG
• FIG. 3 shows a section corresponding to the illustration in FIG
• Figure 4 is a schematic diagram of a possible connection of a generator to a wind turbine according to the invention.
• FIG. 1 In the illustration of Figure 1 is a relevant to explain the present invention section of a wind turbine 1 can be seen.
• the section consists essentially of a rotor 2, which rotates about a rotor axis 3.
• the rotor 2 consists of a plurality of rotor blades 4, of which only one is indicated in principle in a section here.
• the rotor blades 4 converge in a central rotor hub 5.
• the rotor blades 4 are their own
• the adjustment of the rotor blades 4 is known from the general state of the art. It typically takes place from the interior of the wheel hub 5 via adjusting devices 8, which are indicated here only as a box. However, the structure of these actuators 8 is known from the general state of the art.
• Rotor hub 5 are supplied. This is done in the structure shown here by a fixed central supply channel 9, which is arranged around the rotor axis 3 and thus the axis of rotation of the rotor 2. Over with the Reference numeral 10 provided rotary unions at the rotor hub end of the feed channel 9, this job energy is fed to the adjusting devices 8. The rotary feedthroughs 10 rotate together with the adjusting devices 8 and the rotor hub 5 to the supply channel 9. Die
• Rotary unions 10 can, as shown, outside the
• Supply channel 9 may be arranged, or be realized as a so-called internal rotor inside the feed channel 9.
• the adjusting devices 8 can be designed both as hydraulic adjusting devices and as electrical adjusting devices. Depending on whether electrical energy or pressure energy is required to actuate the adjusting devices 8, electrical power or oil pressure is supplied via the supply channel 9, optionally in line elements extending therein.
• the resulting during rotation of the rotor 2 power is delivered via a trained as a hollow shaft output shaft 11 of the rotor 2 in the region of a transmission 12.
• the feed channel 9 can be mounted, for example, in the drive shaft 11 or drive shaft 11 on the feed channel 9.
• the comparatively low speed of the rotor 2 is then typically translated to a higher speed.
• the gear 12 is constructed so that it has at least one planetary stage 13.
• Planet stage 13 is formed so that a ring gear 14 is rotatably connected to the output shaft 11 of the rotor 2. About planetary gears 15, of which only one can be seen here, the power is then transferred to a sun gear 16.
• This sun gear 16 in turn is in direct communication with an output shaft 17 of the transmission 12.
• An exactly reverse construction of the planetary stage 13 would also be conceivable.
• the planet gears 15 are held in a planet carrier or planet carrier 18.
• the peculiarity consists in the fact that this planet carrier 18 is designed rotatably. He is standing towards, for example, a pulpit of the wind turbine 1 and does not run with.
• This stationary and non-rotating planetary carrier 18 is fixedly connected on its side facing the rotor 2 with one end of the supply channel 9 and in turn has a passage 19 for the supply lines of the body energy.
• This supply line 19 is in communication with the interior of the supply channel 9. Due to the fact that the planetary carrier 18 is stationary, a connection of the feedthrough 19 to a fixed device for providing the required point energy, for example an electrical
• the transmission 12 can thus be arranged coaxially about the rotor axis 3 on the rotor axis 3. All in all, this creates a structure that avoids any misalignment and can be realized coaxially overall. The structure can be realized correspondingly compact and efficient.
• the planetary gears 22 rotate with the output shaft 11 of the rotor 2.
• the ring gear 14 of the planetary gearset 13 is then driven.
• the construction described in FIG. 2 differs from the structure described in FIG. 1 only by means of a longer running feed channel 9, which additionally runs through the optional gear stage 20.
• Another possible embodiment can be seen in the illustration of FIG. Again, the gear 20 is again shown and outlined by the dotted line. It is not absolutely necessary, but can be seen here in particular as an optional supplement.
• the difference with respect to the structure shown in Figure 2 is located in the region of the planet gears 15 of the planetary stage 13. As already in the structure in Figure 1 and Figure 3 meshes with a planetary gear 15 with the ring gear 14 of
• the planetary gears 15, 24 of the planetary gear set 13 are so-called
• Output shaft 17 are driven.
• the generated electrical power can then be converted via suitable converters to the required mains frequency and voltage and so fed into an electrical supply network.
• An alternative to this is shown in the representation of FIG.
• a generator 25 is shown, which is coupled via a speed-controllable gear 26 to the output shaft 17.
• a generator 25 is shown, which is coupled via a speed-controllable gear 26 to the output shaft 17.
• the output shaft 17 of the transmission 12 is then connected to an input shaft 27 of the speed-controlled transmission 26 - for example, fixed. Its output shaft 28 drives the generator 25 directly.
• a speed-controlled transmission is well known in wind turbines from the German patent DE 103 14 757 B3. It consists essentially of a superposition gear 29 for power split and
• Embodiment should be designed as a hydrodynamic converter.
• the power direction is shown in a drive through the output shaft 17.
• the power passes through a central power branch 32 to the hydrodynamic circuit 31.
• a pump of the hydrodynamic converter via this power branch 32 is driven with.
• Power is fed back via the planetary gear 30 via a turbine wheel of the converter and superimposed on the superposition gear 29 with the power originating from the output shaft 17 or the drive shaft 27 of the power-controlled gear 26.
• the generator 25 can be designed as a synchronous generator coupled directly to a power supply 33.
• the effort in terms of electronic conversion and adjustment of the electrical power generated thus eliminated. This creates a significant cost advantage.

Priority Applications (3)

Applications Claiming Priority (2)

Publications (1)

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ID=47553052

Family Applications (1)

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Citations (4)

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• 2012
  • 2012-01-11 DE DE102012000341A patent/DE102012000341A1/de not_active Withdrawn
• 2013
  • 2013-01-07 EP EP13700135.0A patent/EP2635809A1/de not_active Withdrawn
  • 2013-01-07 KR KR1020147018499A patent/KR20140106651A/ko not_active Application Discontinuation
  • 2013-01-07 CN CN201380004419.8A patent/CN103998776B/zh active Active
  • 2013-01-07 WO PCT/EP2013/050149 patent/WO2013104580A1/de active Application Filing

Patent Citations (4)

Non-Patent Citations (1)

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