WO2011019897A2 - Pulsed multi-rotor constant air gap motor cluster - Google Patents
Pulsed multi-rotor constant air gap motor cluster Download PDFInfo
- Publication number
- WO2011019897A2 WO2011019897A2 PCT/US2010/045298 US2010045298W WO2011019897A2 WO 2011019897 A2 WO2011019897 A2 WO 2011019897A2 US 2010045298 W US2010045298 W US 2010045298W WO 2011019897 A2 WO2011019897 A2 WO 2011019897A2
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- motor
- stator
- rotor
- output shaft
- cluster
- Prior art date
Links
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K19/00—Synchronous motors or generators
- H02K19/02—Synchronous motors
- H02K19/10—Synchronous motors for multi-phase current
- H02K19/103—Motors having windings on the stator and a variable reluctance soft-iron rotor without windings
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K1/00—Details of the magnetic circuit
- H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
- H02K1/22—Rotating parts of the magnetic circuit
- H02K1/24—Rotor cores with salient poles ; Variable reluctance rotors
- H02K1/246—Variable reluctance rotors
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K16/00—Machines with more than one rotor or stator
Definitions
- This invention relates to the field of power conversion devices which transform electrical power into rotary mechanical power.
- the invention also relates to multiple motors having two or more motor sections, operating in parallel, each of which is comprised of a stator having two or more salient poles, and a rotor geometry devoid of coils or windings of any kind, affixed obliquely to a motor output shaft, and so disposed as to ensure a constant air gap between the rotor body and the salient poles of it's associated stator section.
- the invention also relates to multiple motor sections with their associated armatures, mechanically positioned out of phase with one another, but mounted so as to allow the output pinions of each individual motor to impinge upon a common output gear of larger diameter, mounted upon a separate but common output shaft, such that each individual motor's output is combined mechanically, and afforded an amplification of torque.
- stepper motors which utilize a magnetic "ratcheting" action upon the magnetic material in the armature, in response to applied pulses of current. But, these devices do not have a constant and continuous air gap of fixed dimension between the rotor and the stator.
- the prior art has not produced a multiple phase, multiply segmented stator with individual, obliquely disposed, laminated armatures devoted to each stator section, such that the stator / rotor combination employs a continuous air gap of constant dimension, regardless of the elliptical profile of said armatures, while not employing any current carrying conductors, coils, windings or bars within or upon the individual armatures, as a means of producing torque upon the output shaft.
- Alternator of the original invention can be operated as a motor only when used in conjunction with the "Basic Motor Concepts" described above in this section, ie. requires field flux and current-carrying conductors.
- Alternator of the original invention does not require salient pole projections in order to operate.
- Alternator of the original invention makes use of an electromagnetic field winding, or a permanent magnet as its source of magnetic flux.
- Alternator of the original invention does not require two or more stator and armature sections in order to function.
- Alternator of the original invention does not require a shaft position indicator, or a commutator of any kind in order to function.
- Alternator of the original invention does not require a position sensitive, electronically controlled, pulsed power supply, in order to generate electricity. Any other similarities between the original invention and the present invention are requirements possessed by any and all rotating power converters, such as bearings, shafts, end bells, laminations, mechanical housing, etc.
- Fig. 1 is a diagram of a single-rotor with constant air-gap
- Fig. 2 is a diagram of a parallel output cluster of motor sections such as the one shown in Fig. 1 ;
- Fig. 3 is a motor coil energizing scheme for the motors of Fig. 2;
- Fig. 4 is a schematic of coil interconnections for eight motor sections mechanically connected in parallel
- Fig. 5a is a diagram of a motor cluster having brushes and commutator for timing
- Fig. 5b is a diagram of a motor cluster having an optical encoder for timing.
- an electric motor cluster consists of several stator sections each possessing a minimum of two salient pole projections, wound with power windings, and each having a single armature rotor.
- Each individual rotor is angularly displaced one from the other, while mounted upon a common frame, and geared together such that each motor section contributes to the rotation of a common output shaft.
- Each motor section shall consist of stator and armature elements as described in PCT application number PCT / US09 / 46246, filed on June 4, 2009, and entitled "PULSED MULTI- ROTOR CONSTANT AIR GAP RELUCTANCE MOTOR.” Said motor shall consist of the following features:
- a stator consisting of a stack of laminations, or a molded ferrite core, so constructed as to provide at least one set of salient magnetic poles, spaced apart 180 mechanical degrees, and situated so as to allow an air gap to exist between said stator structure and the armature of the motor.
- Each salient magnetic pole projection shall be wound with power windings, the function of which shall be to produce a magnetic field of considerable strength, and direct same through the air gaps and into the body of the motor's armature.
- An armature also consisting of a stack of laminations, or a molded ferrite shape, so designed as to present each set of field poles with a cylindrical contour, perceived beyond each air gap, while retaining an elliptical profile with respect to the output shaft.
- Said armature sections carry no electrical windings of any kind, and require no slip rings or, field coils or permanent magnets.
- armature segments may require shaft-mounted counter weights to offset their eccentricity, and maintain angular balance during rotation.
- the power windings wound upon the salient pole projections are energized by pulses of electric current produced by a DC power supply and provided through an electronic controller unit, or through a mechanical commutator, etc. Said pulses are automatically applied to the salient pole nearest the longest flux path available through a particular rotor section, as determined by a shaft position sensor, or the geometry of a commutator.
- the shaft position sensor Upon detecting motion, the shaft position sensor communicates the change in position of the output shaft to the electronic controller, and current flow is then terminated in each active stator section, and instantly initiated in the stator section windings next scheduled to be activated.
- FIGs 1- 5 illustrate a preferred embodiment of the motor cluster which constitutes the invention disclosed herein.
- each motor section consists of a metallic housing 1 containing a stator stack 7 and an armature assembly 2, which is mounted upon an output shaft 4, which is carried by two sets of bearings 5, located within end bells 13.
- the rotor assembly 2 within each motor section consists of a stack of silicon steel laminations 3, or a molded ferrite of appropriate shape, or any other high permeability magnetic material designed to suppress eddy currents, machined so as to produce a section of a right circular cylinder canted at an angle of 45 degrees with respect to the motor output shaft 4.
- the rotor structure appears to be circular in shape.
- the side view depicts an ellipse tilted at 45 degrees. This angle may not be the most optimal angle, and it should be realized that other angles may be employed without departing from the spirit of the invention.
- Each motor shaft 4 may also carry counter weights 6, as depicted, which function to ensure a smooth rotary motion by suppressing mechanical vibrations produced by the mass distribution of the eccentric armature design 2.
- Each motor shaft carries a high speed output pinion 12 which is designed to mesh with the main output gear as shown in Figures 2 and 5.
- Each stator assembly contains an individual stack of stator laminations 7 or a magnetic ferrite cylinder, from which extend two or more salient pole projections 8, each of which is wound with a power coil 9.
- the face of each pole projection 10 is extended to the right and the left of center to ensure continuous air gaps 11 of constant dimension. Said pole faces are always aligned parallel to the rotor's edge contour regardless of it's angular disposition.
- each motor element consists of a laminated, four pole stator stack 22, an air gap 28, an elliptical rotor 27, an individual motor output shaft 24, and an output pinion 23. Further, it will be noted, that each output pinion is in mesh with a central output gear or "bull gear" 25 which drives the main output shaft 26.
- switches SlA through S8A, and switches SlB through S8B are used to control the power winding coil sets in each motor section.
- the coil sets are labeled A, A' and B, B' for each motor as shown in Figure 2.
- These switches are schematically accurate, but may represent either solid state switching devices located within the electronic motor controller, or actual contact bars located upon a more traditional commutating device.
- Figures 5A and 5B depict two variations of the present invention.
- Figure 5 A demonstrates the parallel motor cluster concept employing a traditional electro-mechanical commutating device 56, 57
- Figure 5B demonstrates a more modern approach employing a shaft-mounted encoder 59, a micro-processor, and an electronic motor controller.
- both systems require a source of DC power, as well as a capacitive power sump, into which excess "inductive energy” is directed.
- This "sump” may be equipped with a resistive load, which will consume said inductive energy, or the accumulated potential may be utilized to supply other worthwhile power requirements.
- each arrangement contains a motor cluster housing 51, a plurality of high speed motor pinions 52 mounted upon individual motor output shafts 53, and a central bull gear 54 mounted upon a main output shaft 55.
- Figure 5 A makes use of a mechanical commutation device 56 with standard carbon brush contactors 57, while the device shown in Figure 5B employs a shaft encoder 59 and an encoder pick-up device 60.
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)
- Synchronous Machinery (AREA)
Abstract
Description
Claims
Priority Applications (8)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2012524864A JP2013502199A (en) | 2009-08-14 | 2010-08-12 | Constant-gap pulse motor cluster with multi-rotor |
CA2773362A CA2773362A1 (en) | 2009-08-14 | 2010-08-12 | Pulsed multi-rotor constant air gap motor cluster |
EP10808748A EP2465186A2 (en) | 2009-08-14 | 2010-08-12 | Pulsed multi-rotor constant air gap motor cluster |
US13/390,437 US8476799B2 (en) | 2009-08-14 | 2010-08-12 | Pulsed multi-rotor constant air gap motor cluster |
AU2010282469A AU2010282469A1 (en) | 2009-08-14 | 2010-08-12 | Pulsed multi-rotor constant air gap motor cluster |
US13/562,199 US8482181B2 (en) | 2008-06-04 | 2012-07-30 | Three phase synchronous reluctance motor with constant air gap and recovery of inductive field energy |
US13/562,233 US20130187586A1 (en) | 2008-06-04 | 2012-07-30 | Multi-Pole Switched Reluctance D.C. Motor with a Constant Air Gap and Recovery of Inductive Field Energy |
US13/562,214 US20130187580A1 (en) | 2008-06-04 | 2012-07-30 | Controller For Back EMF Reducing Motor |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US23401109P | 2009-08-14 | 2009-08-14 | |
US61/234,011 | 2009-08-14 |
Related Child Applications (4)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/US2009/046246 Continuation-In-Part WO2009149251A1 (en) | 2008-06-04 | 2009-06-04 | Pulsed multi-rotor constant air gap switched reluctance motor |
US13/390,437 A-371-Of-International US8476799B2 (en) | 2008-06-04 | 2010-08-12 | Pulsed multi-rotor constant air gap motor cluster |
US99394110A Continuation-In-Part | 2008-06-04 | 2010-12-03 | |
US13/562,199 Continuation-In-Part US8482181B2 (en) | 2008-06-04 | 2012-07-30 | Three phase synchronous reluctance motor with constant air gap and recovery of inductive field energy |
Publications (2)
Publication Number | Publication Date |
---|---|
WO2011019897A2 true WO2011019897A2 (en) | 2011-02-17 |
WO2011019897A3 WO2011019897A3 (en) | 2011-04-28 |
Family
ID=43586839
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/US2010/045298 WO2011019897A2 (en) | 2008-06-04 | 2010-08-12 | Pulsed multi-rotor constant air gap motor cluster |
Country Status (6)
Country | Link |
---|---|
US (1) | US8476799B2 (en) |
EP (1) | EP2465186A2 (en) |
JP (1) | JP2013502199A (en) |
AU (1) | AU2010282469A1 (en) |
CA (1) | CA2773362A1 (en) |
WO (1) | WO2011019897A2 (en) |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US8482181B2 (en) | 2008-06-04 | 2013-07-09 | Convergent Power, Inc. | Three phase synchronous reluctance motor with constant air gap and recovery of inductive field energy |
WO2013167096A3 (en) * | 2012-05-11 | 2014-11-06 | Evektor, Spol. S.R.O. | Compact driving unit |
WO2014021910A3 (en) * | 2012-07-30 | 2015-06-11 | Convergent Power, Inc. | Multi-pole electric electrodynamic machine with a constant air gap to reduce back torque |
WO2014021911A3 (en) * | 2012-07-30 | 2015-06-18 | Convergent Power, Inc. | Controller for back emf reducing motor |
EP2822159A3 (en) * | 2013-07-01 | 2016-01-20 | WMH Herion Antriebstechnik GmbH | Rotary drive |
GB2546152A (en) * | 2015-11-24 | 2017-07-12 | Camcon Auto Ltd | Stator assembly |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2014021913A1 (en) * | 2012-07-30 | 2014-02-06 | Convergent Power, Inc. | Multi-pole switched reluctance d.c. motor with fixed air gap and recovery of inductive field energy |
WO2014021912A1 (en) * | 2012-07-30 | 2014-02-06 | Convergent Power, Inc. | Three phase synchronous reluctance motor with constant air gap and recovery of inductive field energy |
GB2576046B (en) * | 2018-08-03 | 2023-06-14 | Advanced Electric Machines Ltd | Electrical sub-assembly and associated method of operation |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20050140230A1 (en) * | 2002-01-30 | 2005-06-30 | Johnson Michael F. | Electric motor and vehicle powered thereby |
Family Cites Families (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3168665A (en) * | 1962-01-02 | 1965-02-02 | Molon Motor & Coil Corp | Multiple rotor induction motor unit |
US3360667A (en) * | 1964-01-31 | 1967-12-26 | Jr Thurlow M Gordon | Field control means for dynamo electrical machines |
US4274023A (en) * | 1979-05-10 | 1981-06-16 | Lamprey Donald F | Compact variable speed drive for electric motor |
JP3294051B2 (en) * | 1994-04-21 | 2002-06-17 | 株式会社荏原製作所 | Multi-axis motor |
JPH089602A (en) | 1994-06-23 | 1996-01-12 | Nakamichi Corp | Composite motor |
JP3283710B2 (en) * | 1994-09-22 | 2002-05-20 | 株式会社荏原製作所 | Multi-axis synchronous reversing drive motor |
JPH09285081A (en) * | 1996-04-10 | 1997-10-31 | Toyota Autom Loom Works Ltd | Multishaft motor |
US6998723B2 (en) * | 2002-08-06 | 2006-02-14 | Carl Cheung Tung Kong | Electrical generating system having a magnetic coupling |
US7902708B2 (en) * | 2009-01-07 | 2011-03-08 | Shimon Elmaleh | Electro-magnetic motor generator system |
-
2010
- 2010-08-12 EP EP10808748A patent/EP2465186A2/en not_active Withdrawn
- 2010-08-12 WO PCT/US2010/045298 patent/WO2011019897A2/en active Application Filing
- 2010-08-12 AU AU2010282469A patent/AU2010282469A1/en not_active Abandoned
- 2010-08-12 US US13/390,437 patent/US8476799B2/en active Active
- 2010-08-12 JP JP2012524864A patent/JP2013502199A/en not_active Withdrawn
- 2010-08-12 CA CA2773362A patent/CA2773362A1/en not_active Abandoned
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20050140230A1 (en) * | 2002-01-30 | 2005-06-30 | Johnson Michael F. | Electric motor and vehicle powered thereby |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US8482181B2 (en) | 2008-06-04 | 2013-07-09 | Convergent Power, Inc. | Three phase synchronous reluctance motor with constant air gap and recovery of inductive field energy |
WO2013167096A3 (en) * | 2012-05-11 | 2014-11-06 | Evektor, Spol. S.R.O. | Compact driving unit |
WO2014021910A3 (en) * | 2012-07-30 | 2015-06-11 | Convergent Power, Inc. | Multi-pole electric electrodynamic machine with a constant air gap to reduce back torque |
WO2014021911A3 (en) * | 2012-07-30 | 2015-06-18 | Convergent Power, Inc. | Controller for back emf reducing motor |
EP2822159A3 (en) * | 2013-07-01 | 2016-01-20 | WMH Herion Antriebstechnik GmbH | Rotary drive |
GB2546152A (en) * | 2015-11-24 | 2017-07-12 | Camcon Auto Ltd | Stator assembly |
Also Published As
Publication number | Publication date |
---|---|
WO2011019897A3 (en) | 2011-04-28 |
US8476799B2 (en) | 2013-07-02 |
US20120139368A1 (en) | 2012-06-07 |
AU2010282469A1 (en) | 2012-03-22 |
EP2465186A2 (en) | 2012-06-20 |
CA2773362A1 (en) | 2011-02-17 |
JP2013502199A (en) | 2013-01-17 |
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