GB2487302A - Dual rotor wind or water turbine with a planetary gearbox - Google Patents

Dual rotor wind or water turbine with a planetary gearbox Download PDF

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Publication number
GB2487302A
GB2487302A GB1200630.0A GB201200630A GB2487302A GB 2487302 A GB2487302 A GB 2487302A GB 201200630 A GB201200630 A GB 201200630A GB 2487302 A GB2487302 A GB 2487302A
Authority
GB
United Kingdom
Prior art keywords
rotor
dual
output
input
arrangement according
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.)
Granted
Application number
GB1200630.0A
Other versions
GB2487302B (en
GB201200630D0 (en
Inventor
Marek Jakubaszek
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.)
Romax Technology Ltd
Original Assignee
Romax Technology Ltd
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 Romax Technology Ltd filed Critical Romax Technology Ltd
Publication of GB201200630D0 publication Critical patent/GB201200630D0/en
Publication of GB2487302A publication Critical patent/GB2487302A/en
Application granted granted Critical
Publication of GB2487302B publication Critical patent/GB2487302B/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • F03D1/00—Wind motors with rotation axis substantially parallel to the air flow entering the rotor 
    • F03D1/02—Wind motors with rotation axis substantially parallel to the air flow entering the rotor  having a plurality of rotors
    • F03D1/025—Wind motors with rotation axis substantially parallel to the air flow entering the rotor  having a plurality of rotors coaxially arranged
    • 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
    • F03B—MACHINES OR ENGINES FOR LIQUIDS
    • F03B11/00—Parts or details not provided for in, or of interest apart from, the preceding groups, e.g. wear-protection couplings, between turbine and generator
    • 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
    • F03B—MACHINES OR ENGINES FOR LIQUIDS
    • F03B13/00—Adaptations of machines or engines for special use; Combinations of machines or engines with driving or driven apparatus; Power stations or aggregates
    • F03B13/12—Adaptations of machines or engines for special use; Combinations of machines or engines with driving or driven apparatus; Power stations or aggregates characterised by using wave or tide energy
    • F03B13/26—Adaptations of machines or engines for special use; Combinations of machines or engines with driving or driven apparatus; Power stations or aggregates characterised by using wave or tide energy using tide energy
    • F03B13/264—Adaptations of machines or engines for special use; Combinations of machines or engines with driving or driven apparatus; Power stations or aggregates characterised by using wave or tide energy using tide energy using the horizontal flow of water resulting from tide movement
    • 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
    • F03B—MACHINES OR ENGINES FOR LIQUIDS
    • F03B17/00—Other machines or engines
    • F03B17/06—Other machines or engines using liquid flow with predominantly kinetic energy conversion, e.g. of swinging-flap type, "run-of-river", "ultra-low head"
    • F03B17/062—Other machines or engines using liquid flow with predominantly kinetic energy conversion, e.g. of swinging-flap type, "run-of-river", "ultra-low head" with rotation axis substantially at right angle to flow direction
    • F03B17/063—Other machines or engines using liquid flow with predominantly kinetic energy conversion, e.g. of swinging-flap type, "run-of-river", "ultra-low head" with rotation axis substantially at right angle to flow direction the flow engaging parts having no movement relative to the rotor during its rotation
    • 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
    • F03D15/00—Transmission of mechanical power
    • 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
    • F03D15/00—Transmission of mechanical power
    • F03D15/10—Transmission of mechanical power using gearing not limited to rotary motion, e.g. with oscillating or reciprocating members
    • 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
    • F05B2210/00—Working fluid
    • F05B2210/16—Air or water being indistinctly used as working fluid, i.e. the machine can work equally with air or water without any modification
    • 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
    • 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
    • Y02E10/20—Hydro energy
    • 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

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • General Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Sustainable Development (AREA)
  • Sustainable Energy (AREA)
  • Oceanography (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Power Engineering (AREA)
  • Retarders (AREA)
  • Wind Motors (AREA)

Abstract

A dual rotor arrangement 100 for a wind or water turbine has a planetary gearbox with two inputs 3, 5 and an output 9. One rotor 1 is connected to one of the inputs, which may be the ring gear and the other rotor 8 is connected to the other input, which may be the planet carrier of the epicyclical gear arrangement. A generator is connected to the output, which may be the sun gear via a shaft 11. The rotational speed of the output is determined by the relative rotational speeds of the rotors. Preferably one rotor is located upstream of the other and is of a smaller diameter. One or both of the rotors may have variable pitch blades to control the rotational speed, in some operating conditions the rotors may rotate in the same direction, in other conditions the blades may counter rotate.

Description

Dual Rotor Wind or Water Turbine This invention relates to wind and water turbines, and in particular to wind and water turbines having dual rotors.
Wind or water turbines are devices for converting wind or water power into electrical power and usually include a rotor, a gear box and a generator. In operation, wind causes the rotor to rotate and to provide a high torque, relatively low frequency input to the gear box. The gearbox transforms this input to provide a high, preferably constant, speed to the generator so that alternating current of the required frequency is produced.
In dual rotor turbines, combining the rotational energy from each rotor so that a single generator may be used has been achieved using bevel gears. It has also been achieved by connecting each turbine rotor to counter-rotating stator and rotor components of a generator, or having the first turbine rotor connected to first generator field rotor, and second turbine rotor connected to second field rotor. This arrangement means that the two rotors rotate in opposite directions and, for the first approach, the speed of the two rotors relative to each other cannot be adjusted.
One problem with existing wind/water turbine assemblies is the difficulty of maintaining a constant output speed to the generator. Another drawback is the relatively complex nature of wind/water turbine gearboxes, often utilising multiple stage planetary gear systems.
According to a first aspect of the present invention there is provided a dual rotor arrangement for a wind or water turbine comprising: a planetary gearbox having a first input, a second input and an output; a first rotor connected to the first input; a second rotor connected to the second input; and a generator connected to the output. A rotational speed of the output is determined by a relative rotational speed of the first and second rotors so that the generator produces electricity of a desired frequency.
The arrangement enables electricity of constant frequency to be generated under conditions where the wind or water speed is variable.
The dual rotor arrangement may further comprise blades having a variable pitch attached to the first rotor so that, in use, a rotational speed of the first rotor may be varied. This allows the relative speed of the first rotor with respect to the second rotor to be varied according to the wind or water speed.
The dual rotor arrangement may further comprise blades having a variable pitch attached to the second rotor so that, in use, a rotational speed of the second rotor may be varied. This allows the relative speed of the second rotor with respect to the first rotor to be varied according to the wind or water speed.
The dual rotor arrangement may be further configured so that the first rotor is upstream of the second rotor.
The dual rotor arrangement may be further configured so that the upstream first rotor has a smaller diameter than the downstream second rotor. This arrangement means that the second rotor is at least partly positioned away from turbulence caused by operation of the first rotor.
The dual rotor arrangement may be further configured so that the first rotor and the second rotor rotate in a same direction.
The dual rotor arrangement may be further configured so that the first rotor and the second rotor rotate in a different direction.
The dual rotor arrangement may be further configured so that the first input is connected to a ring gear of the planetary gearbox.
The dual rotor arrangement may be further configured so that the second input is connected to a planet carrier of the planetary gearbox.
The dual rotor arrangement may be further configured so that the output is connected to a sun gear of the planetary gearbox.
The invention will now be described solely by way of example only, with reference to the accompanying drawings in which: For a more complete explanation of the present invention and the technical advantages thereof, reference is now made to the following description and the accompanying drawing in which: Figure 1 is a sectional view of a gearbox layout of the present invention; Figure 2 is a plan view of the configuration of the rotor blades; Figure 3 is a schematic view of a gearbox layout of the present invention; and Figure 4 is a sectional view of a gearbox of the present invention at A-A.
Figures 1 and 3 show a dual rotor wind or water turbine 100 that enables electricity of near constant frequency to be generated when operated under conditions where the wind or water velocity is variable. The arrangement includes planetary gearbox 100 having first input 3, second input 6 and output 9. First rotor 1 is connected to first input 3, second rotor 8 is connected to second input 5; and a generator (not shown) is connected to output 9. A rotational speed of output 9 is determined by a relative rotational speed of first rotor 1 and second rotor 8 so that the generator produces electricity of a desired frequency. In the exemplary embodiment shown in Figures 1 and 3, first input 3 is a ring gear, second input 6 is a planet carrier, and output 9 is a sun gear. Thus turbine 100 has blades 101 on first rotor 1 connected to sleeve 2 which is connected in turn to a ring gear 3. Ring gear 3 is meshed with planet gear 4. Planet gear 4 is supported by bearings on pin 5. Pin 5 is fixed on planetary carrier 6 embedded on shaft 7.
Shaft 7 is connected to second rotor 8 having blades 108. Planet gear 4 is also meshed with sun gear on shaft 9 which is in turn connected to high speed intermediate shaft 10 and engaged with high speed output shaft 11. Output shaft 11 is connected to a generator (not shown).
There are two sources of torque in this gearbox, rotors 1 and 8.
First, torque generated from rotor 1 is transferred to planet gears 4 via sleeve 2 and ring gear 3.
Secondly, torque from rotor 8 is transferred to planet gears 4 through shaft 7, planetary carrier 6 and pin 5.
Torque is combined at mesh between ring gear 3 and planet gears 4 and transferred to the output via sun gear or shaft 9. High speed intermediate shaft 1 0 is connected to sun gear or shaft 9, and the combined torque is transfer high speed output shaft 11 as output torque to the generator.
Figure 2 shows angular positions of blades 1 and/or 8 on the two rotors and the angular position can be adjusted to alter the relative speeds of the two rotors. The variable angle blades can form part of one or both rotors. Output shaft 11 speed depends on the angular position of the blades 1 and/or 8 which can be multiplication or reduction.
Figure 3 shows a schematic of one configuration of a dual rotor wind or water turbine system, and Figure 4 shows a cross-sectional view of a gearbox having three planetary gears. The output speed of the output shaft 10, n3, is given by the following relationship: (2n2(r2-i-r3)+ni r1)1r3 Where n1 is the rotational speed of rotor 1, n2 is the rotational speed of rotor 8, r2 is the radius of the planetary gears 4, r3 is the radius of the sun shaft 9, and r1=2r2-i-r3.
Note that in this example the rotors are counter-rotating.
The present invention provides a simple construction involving a single stage planetary system. It is an approach for controlling the output speed using a control system to alter the pitch of the rotor blades of the one or both turbines.

Claims (11)

  1. Claims 1. A dual rotor arrangement for a wind or water turbine comprising: a planetary gearbox having a first input, a second input and an output; a first rotor connected to the first input; a second rotor connected to the second input; and a generator connected to the output; wherein, in use, a rotational speed of the output is determined by a relative rotational speed of the first and second rotors so that the generator produces electricity of a desired frequency.
  2. 2. A dual rotor arrangement according to claim 1 further comprising blades having a variable pitch attached to the first rotor wherein, in use, a rotational speed of the first rotor may be varied.
  3. 3. A dual rotor arrangement according to claim 1 further comprising blades having a variable pitch attached to the second rotor wherein, in use, a rotational speed of the second rotor may be varied.
  4. 4. The dual rotor arrangement according to any of the preceding claims configured 50 that the first rotor is upstream of the second rotor.
  5. 5. The dual rotor arrangement according to claim 4 in which the first rotor has a smaller diameter than the second rotor, wherein in use the second rotor is at least partly positioned away from turbulence caused by operation of the first rotor.
  6. 6. A dual rotor arrangement according to any of the preceding claims in which the first rotor and the second rotor rotate in a same direction.
  7. 7. A dual rotor arrangement according to any of the preceding claims in which the first rotor and the second rotor rotate in a different direction.
  8. 8. A dual rotor arrangement according to any of the preceding claims in which the first input is connected to a ring gear of the planetary gearbox.
  9. 9. A dual rotor arrangement according to any of the preceding claims in which the second input is connected to a planet carrier of the planetary gearbox.
  10. 10. A dual rotor arrangement according to any of the preceding claims in which the output is connected to a sun gear of the planetary gearbox.
  11. 11. A dual rotor arrangement substantially as described herein with reference to the accompanying drawings.
GB1200630.0A 2011-01-14 2012-01-16 Dual rotor wind or water turbine Expired - Fee Related GB2487302B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GBGB1100592.3A GB201100592D0 (en) 2011-01-14 2011-01-14 Dual rotor wind or water turbine

Publications (3)

Publication Number Publication Date
GB201200630D0 GB201200630D0 (en) 2012-02-29
GB2487302A true GB2487302A (en) 2012-07-18
GB2487302B GB2487302B (en) 2017-02-22

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GBGB1100592.3A Ceased GB201100592D0 (en) 2011-01-14 2011-01-14 Dual rotor wind or water turbine
GB1200630.0A Expired - Fee Related GB2487302B (en) 2011-01-14 2012-01-16 Dual rotor wind or water turbine

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103277246A (en) * 2013-06-14 2013-09-04 河海大学常州校区 Vertical-axis wind turbine with double wind wheels capable of rotating coaxially and oppositely
GB2515541A (en) * 2013-06-27 2014-12-31 Khalil Abu Al-Rubb Floating turbine
CN113503225A (en) * 2021-06-29 2021-10-15 华北电力大学 Resonance crossing method for series connection type homodromous double-impeller wind generating set

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB696653A (en) * 1949-12-16 1953-09-02 Lucien Romani Improvements in or relating to torque governors for a windmill
JPS6329064A (en) * 1986-07-22 1988-02-06 Ichiro Wada Wind power driven rotary drive mechanism
WO1996000349A1 (en) * 1994-06-27 1996-01-04 Chan Shin The multi-unit rotor blade system integrated wind turbine
JP2003129937A (en) * 2001-10-24 2003-05-08 Akira Ishida Wind mill for running body
US20060093482A1 (en) * 2002-09-17 2006-05-04 Andre Wacinski Drive device for a windmill provided with two counter-rotating screws
CH703018A2 (en) * 2010-04-15 2011-10-31 Eotheme Sarl Wind turbine driving system for wind turbine park, has epicyclic type multiplier provided with two shafts that are connected to contra-rotating helixes of wind turbine and third shaft that is directly connected to rotor of generator

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2010141347A2 (en) * 2009-06-01 2010-12-09 Synkinetics, Inc. Multi-rotor fluid turbine drive with speed converter

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB696653A (en) * 1949-12-16 1953-09-02 Lucien Romani Improvements in or relating to torque governors for a windmill
JPS6329064A (en) * 1986-07-22 1988-02-06 Ichiro Wada Wind power driven rotary drive mechanism
WO1996000349A1 (en) * 1994-06-27 1996-01-04 Chan Shin The multi-unit rotor blade system integrated wind turbine
JP2003129937A (en) * 2001-10-24 2003-05-08 Akira Ishida Wind mill for running body
US20060093482A1 (en) * 2002-09-17 2006-05-04 Andre Wacinski Drive device for a windmill provided with two counter-rotating screws
CH703018A2 (en) * 2010-04-15 2011-10-31 Eotheme Sarl Wind turbine driving system for wind turbine park, has epicyclic type multiplier provided with two shafts that are connected to contra-rotating helixes of wind turbine and third shaft that is directly connected to rotor of generator

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103277246A (en) * 2013-06-14 2013-09-04 河海大学常州校区 Vertical-axis wind turbine with double wind wheels capable of rotating coaxially and oppositely
CN103277246B (en) * 2013-06-14 2015-04-22 河海大学常州校区 Vertical-axis wind turbine with double wind wheels capable of rotating coaxially and oppositely
GB2515541A (en) * 2013-06-27 2014-12-31 Khalil Abu Al-Rubb Floating turbine
GB2520427A (en) * 2013-06-27 2015-05-20 Khalil Abu Al-Rubb Floating Turbine
GB2520427B (en) * 2013-06-27 2015-09-23 Khalil Abu Al-Rubb Floating Turbine
GB2515541B (en) * 2013-06-27 2015-09-30 Khalil Abu Al-Rubb Floating turbine
CN105473846A (en) * 2013-06-27 2016-04-06 K·阿布·阿尔鲁布 Water turbine with variable buoyancy
CN105473846B (en) * 2013-06-27 2017-11-28 K·阿布·阿尔鲁布 Water turbine with variable buoyancy
CN113503225A (en) * 2021-06-29 2021-10-15 华北电力大学 Resonance crossing method for series connection type homodromous double-impeller wind generating set

Also Published As

Publication number Publication date
GB2487302B (en) 2017-02-22
GB201200630D0 (en) 2012-02-29
GB201100592D0 (en) 2011-03-02

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PCNP Patent ceased through non-payment of renewal fee

Effective date: 20230116