WO2009009473A3 - Wind energy converter comprising mechanical and magnetic bearings - Google Patents

Wind energy converter comprising mechanical and magnetic bearings Download PDF

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Publication number
WO2009009473A3
WO2009009473A3 PCT/US2008/069305 US2008069305W WO2009009473A3 WO 2009009473 A3 WO2009009473 A3 WO 2009009473A3 US 2008069305 W US2008069305 W US 2008069305W WO 2009009473 A3 WO2009009473 A3 WO 2009009473A3
Authority
WO
WIPO (PCT)
Prior art keywords
shaft
magnetic components
force
act
impart
Prior art date
Application number
PCT/US2008/069305
Other languages
French (fr)
Other versions
WO2009009473A2 (en
Inventor
John J Rozmus
Original Assignee
Rozlev Corp Llc
John J Rozmus
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 Rozlev Corp Llc, John J Rozmus filed Critical Rozlev Corp Llc
Publication of WO2009009473A2 publication Critical patent/WO2009009473A2/en
Publication of WO2009009473A3 publication Critical patent/WO2009009473A3/en

Links

Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
    • H02K7/08—Structural association with bearings
    • H02K7/09—Structural association with bearings with magnetic bearings
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C32/00—Bearings not otherwise provided for
    • F16C32/04—Bearings not otherwise provided for using magnetic or electric supporting means
    • F16C32/0406—Magnetic bearings
    • F16C32/0408—Passive magnetic bearings
    • F16C32/041—Passive magnetic bearings with permanent magnets on one part attracting the other part
    • F16C32/0417—Passive magnetic bearings with permanent magnets on one part attracting the other part for axial load mainly
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C39/00—Relieving load on bearings
    • F16C39/06—Relieving load on bearings using magnetic means
    • F16C39/063—Permanent magnets
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
    • H02K7/18—Structural association of electric generators with mechanical driving motors, e.g. with turbines
    • H02K7/1807—Rotary generators
    • H02K7/1823—Rotary generators structurally associated with turbines or similar engines
    • H02K7/183—Rotary generators structurally associated with turbines or similar engines wherein the turbine is a wind turbine
    • H02K7/1838—Generators mounted in a nacelle or similar structure of a horizontal axis wind turbine
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C2300/00—Application independent of particular apparatuses
    • F16C2300/10—Application independent of particular apparatuses related to size
    • F16C2300/14—Large applications, e.g. bearings having an inner diameter exceeding 500 mm
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C2360/00—Engines or pumps
    • F16C2360/31—Wind motors
    • 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

A wind generator system includes a stationary frame, a shaft, mechanical bearings and a stator and a rotor, along with magnetic components configured to reduce or substantially eliminate various loads imposed on the mechanical bearings by the system and by wind. In particular, magnetic components at a bearing closest to the vanes of attached to the shaft act to impart a force on the shaft opposing gravity. Magnetic components at a bearing along the shaft distal from the vanes act to impart a force on the shaft opposing a bending force exerted by the shaft on the bearing at that point. Additional magnetic components act to oppose gravity adjacent the stator and rotor. Still further magnetic components act to impart a force on the shaft opposing the wind force.
PCT/US2008/069305 2007-07-12 2008-07-07 Wind energy converter comprising mechanical and magnetic bearings WO2009009473A2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US11/827,538 2007-07-12
US11/827,538 US7391128B2 (en) 2004-12-30 2007-07-12 Wind generator system using attractive magnetic forces to reduce the load on the bearings

Publications (2)

Publication Number Publication Date
WO2009009473A2 WO2009009473A2 (en) 2009-01-15
WO2009009473A3 true WO2009009473A3 (en) 2009-07-02

Family

ID=40260886

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2008/069305 WO2009009473A2 (en) 2007-07-12 2008-07-07 Wind energy converter comprising mechanical and magnetic bearings

Country Status (2)

Country Link
US (1) US7391128B2 (en)
WO (1) WO2009009473A2 (en)

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US7944074B2 (en) 2008-03-25 2011-05-17 General Electric Company Wind turbine direct drive airgap control method and system
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WO2010131968A2 (en) * 2009-05-13 2010-11-18 Hydroring Capital B.V. Bearing for energy converter for flowing fluids and gases
DE102009022835B3 (en) * 2009-05-27 2011-03-03 Schaeffler Kg Method for monitoring the condition of a backup bearing of a machine
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US20110049902A1 (en) * 2009-08-28 2011-03-03 Fred Noah Miekka Air cooled brushless wind alternator
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US8008798B2 (en) * 2009-12-23 2011-08-30 General Electric Company Wind turbine drivetrain system
US8844633B2 (en) * 2010-03-29 2014-09-30 At-Balance Americas, Llc Method for maintaining wellbore pressure
US20110143880A1 (en) * 2010-12-01 2011-06-16 General Electric Company Drivetrain for generator in wind turbine
US8678767B2 (en) * 2011-04-08 2014-03-25 Peter Mok Wind turbine
AR083135A1 (en) * 2011-10-05 2013-02-06 Ind Metalurgicas Pescarmona S A I C Y F SYNCHRONIC WIND GENERATOR
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CN112177868B (en) * 2019-07-01 2022-04-12 中国航天科工飞航技术研究院（中国航天海鹰机电技术研究院） Self-aligning magnetic suspension bearing system and generator
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Also Published As

Publication number Publication date
WO2009009473A2 (en) 2009-01-15
US20080012347A1 (en) 2008-01-17
US7391128B2 (en) 2008-06-24

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