CA2235056A1 - Switched reluctance motor having stator inserts for noise reduction, magnet positioning, and coil retention - Google Patents

Switched reluctance motor having stator inserts for noise reduction, magnet positioning, and coil retention

Info

Publication number
CA2235056A1
CA2235056A1 CA002235056A CA2235056A CA2235056A1 CA 2235056 A1 CA2235056 A1 CA 2235056A1 CA 002235056 A CA002235056 A CA 002235056A CA 2235056 A CA2235056 A CA 2235056A CA 2235056 A1 CA2235056 A1 CA 2235056A1
Authority
CA
Canada
Prior art keywords
stator
curvilinear
poles
stator poles
reluctance motor
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
CA002235056A
Other languages
French (fr)
Other versions
CA2235056C (en
Inventor
Joseph T. Gierer
Karmen D. Cox
George E. Hendrix
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.)
Emerson Electric Co
Original Assignee
Emerson Electric Co
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 Emerson Electric Co filed Critical Emerson Electric Co
Publication of CA2235056A1 publication Critical patent/CA2235056A1/en
Application granted granted Critical
Publication of CA2235056C publication Critical patent/CA2235056C/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K29/00—Motors or generators having non-mechanical commutating devices, e.g. discharge tubes or semiconductor devices
    • H02K29/03—Motors or generators having non-mechanical commutating devices, e.g. discharge tubes or semiconductor devices with a magnetic circuit specially adapted for avoiding torque ripples or self-starting problems
    • 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
    • H02K1/12—Stationary parts of the magnetic circuit
    • H02K1/14—Stator cores with salient poles
    • H02K1/146—Stator cores with salient poles consisting of a generally annular yoke with salient poles
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K19/00—Synchronous motors or generators
    • H02K19/02—Synchronous motors
    • H02K19/04—Synchronous motors for single-phase current
    • H02K19/06—Motors having windings on the stator and a variable-reluctance soft-iron rotor without windings, e.g. inductor motors
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K3/00—Details of windings
    • H02K3/46—Fastening of windings on the stator or rotor structure
    • H02K3/52—Fastening salient pole windings or connections thereto
    • H02K3/521—Fastening salient pole windings or connections thereto applicable to stators only
    • H02K3/522—Fastening salient pole windings or connections thereto applicable to stators only for generally annular cores with salient poles
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K2203/00—Specific aspects not provided for in the other groups of this subclass relating to the windings
    • H02K2203/06—Machines characterised by the wiring leads, i.e. conducting wires for connecting the winding terminations
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K2203/00—Specific aspects not provided for in the other groups of this subclass relating to the windings
    • H02K2203/12—Machines characterised by the bobbins for supporting the windings
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K2205/00—Specific aspects not provided for in the other groups of this subclass relating to casings, enclosures, supports
    • H02K2205/12—Machines characterised by means for reducing windage losses or windage noise

Abstract

A switched reluctance motor having a rotor and a stator is disclosed. The stator has a plurality of peripherally spaced stator poles, each being defined by an inner curvilinear face, which is generally aligned with the curvilinear faces of adjacent stator poles in a circumferential path. A plurality of stator inserts are also provided that are disposed between adjacently spaced stator poles. Each stator insert has a curvilinear face that is generally aligned in the same circumferential path with the curvilinear faces of adjacently spaced stator poles to reduce siren noise. Each stator insert is also constructed to include at least one pocket opposite its curvilinear face for receiving a magnet to facilitate positioning of the rotor relative to the stator poles. Each stator insert is further provided with oppositely extending arms for receiving and mounting a pre-wound stator coil or "wound-in-place" coils. A method of assembling the pre-wound coil relative to adjacent spaced stator poles and stator inserts is also disclosed.
CA002235056A 1997-05-13 1998-05-12 Switched reluctance motor having stator inserts for noise reduction, magnet positioning, and coil retention Expired - Lifetime CA2235056C (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US08/855,436 US6232693B1 (en) 1997-05-13 1997-05-13 Switched reluctance motor having stator inserts for noise reduction, magnet positioning, and coil retention
US08/855,436 1997-05-13

Publications (2)

Publication Number Publication Date
CA2235056A1 true CA2235056A1 (en) 1998-11-13
CA2235056C CA2235056C (en) 2003-03-18

Family

ID=25321264

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002235056A Expired - Lifetime CA2235056C (en) 1997-05-13 1998-05-12 Switched reluctance motor having stator inserts for noise reduction, magnet positioning, and coil retention

Country Status (4)

Country Link
US (1) US6232693B1 (en)
EP (1) EP0881755A3 (en)
CA (1) CA2235056C (en)
DE (1) DE881755T1 (en)

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WO1996038903A1 (en) * 1995-05-30 1996-12-05 Toeroek Vilmos A self-starting brushless electric motor
GB2362268B (en) * 2000-05-12 2005-05-11 Notetry Ltd Electrical machine
GB0013604D0 (en) * 2000-06-06 2000-07-26 Univ Newcastle Stator for dynamoelectric apparatus
US6664704B2 (en) * 2001-11-23 2003-12-16 David Gregory Calley Electrical machine
US7211920B2 (en) * 2003-09-05 2007-05-01 Black & Decker Inc. Field assemblies having pole pieces with axial lengths less than an axial length of a back iron portion and methods of making same
US20050189844A1 (en) * 2003-09-05 2005-09-01 Du Hung T. Field assemblies having pole pieces with dovetail features for attaching to a back iron piece(s) and methods of making same
EP1661228A4 (en) * 2003-09-05 2016-11-23 Black & Decker Inc Field assemblies and methods of making same
US7205696B2 (en) * 2003-09-05 2007-04-17 Black & Decker Inc. Field assemblies having pole pieces with ends that decrease in width, and methods of making same
US20060226729A1 (en) * 2003-09-05 2006-10-12 Du Hung T Field assemblies and methods of making same with field coils having multiple coils
BRPI0402045B1 (en) * 2004-05-12 2021-04-13 Oscar Rolando Avilla Cusicanqui HYBRID RELUCTANCE ELECTRIC MOTOR
US7095150B2 (en) * 2004-10-21 2006-08-22 Shop Vac Corporation Apparatus for securing a bobbin of a reluctance machine
US7342339B2 (en) * 2004-10-21 2008-03-11 Shop Vac Corporation Reluctance machine having a non-uniform air gap
EP2562912A1 (en) * 2005-03-07 2013-02-27 Black & Decker Inc. Power Tools with Motor Having a Multi-Piece Stator
JP4737054B2 (en) * 2006-11-30 2011-07-27 トヨタ自動車株式会社 Insulating member and stator
US7868511B2 (en) * 2007-05-09 2011-01-11 Motor Excellence, Llc Electrical devices using disk and non-disk shaped rotors
EP2151039A1 (en) 2007-05-09 2010-02-10 Motor Excellence, LLC Generators using electromagnetic rotors
WO2010062766A2 (en) 2008-11-03 2010-06-03 Motor Excellence, Llc Polyphase transverse and/or commutated flux systems
US8567043B2 (en) * 2009-12-14 2013-10-29 Nidec Motor Corporation Method of assembling low noise rotor or stator of an electric motor or generator
US8222786B2 (en) 2010-03-15 2012-07-17 Motor Excellence Llc Transverse and/or commutated flux systems having phase offset
US8395291B2 (en) 2010-03-15 2013-03-12 Electric Torque Machines, Inc. Transverse and/or commutated flux systems for electric bicycles
EP2548288A1 (en) 2010-03-15 2013-01-23 Motor Excellence, LLC Transverse and/or commutated flux systems configured to provide reduced flux leakage, hysteresis loss reduction, and phase matching
US8854171B2 (en) 2010-11-17 2014-10-07 Electric Torque Machines Inc. Transverse and/or commutated flux system coil concepts
US8952590B2 (en) 2010-11-17 2015-02-10 Electric Torque Machines Inc Transverse and/or commutated flux systems having laminated and powdered metal portions
WO2012067893A2 (en) 2010-11-17 2012-05-24 Motor Excellence, Llc Transverse and/or commutated flux systems having segmented stator laminations
US8736136B2 (en) 2011-02-16 2014-05-27 Toyota Motor Engineering & Manufacturing North America, Inc. Magnetic field manipulation in switched reluctance motors and design method
US8736128B2 (en) 2011-08-10 2014-05-27 Toyota Motor Engineering & Manufacturing North America, Inc. Three dimensional magnetic field manipulation in electromagnetic devices
US8570128B1 (en) 2012-06-08 2013-10-29 Toyota Motor Engineering & Manufacturing North America, Inc. Magnetic field manipulation devices and actuators incorporating the same
US9231309B2 (en) 2012-07-27 2016-01-05 Toyota Motor Engineering & Manufacturing North America, Inc. Metamaterial magnetic field guide

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JPS4988027A (en) 1972-12-27 1974-08-22
GB1488161A (en) 1974-01-22 1977-10-05 Cav Ltd Variable reluctance electric motor
DE2901321A1 (en) * 1979-01-15 1980-07-24 Hilti Ag STATOR FOR ELECTRIC MOTOR
JPS5812566A (en) 1981-07-14 1983-01-24 Yoshiteru Takahashi Brushless motor with more than 7 armature coils
US4484114A (en) 1982-03-04 1984-11-20 Rotron, Incorporated Self-starting brushless DC motor
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NL8601801A (en) 1986-07-10 1988-02-01 Philips Nv METHOD AND ELECTRONIC CIRCUIT FOR STARTING A RELUCTION ENGINE, AND RELUCTION MOTOR FITTED WITH SUCH ELECTRONIC CIRCUIT.
US4916346A (en) 1987-12-28 1990-04-10 General Electric Company Composite rotor lamination for use in reluctance hompolar, and permanent magnet machines
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US5059884A (en) 1990-04-10 1991-10-22 Sundstrand Corporation Variable reluctance motor providing holding torque
US5111095A (en) 1990-11-28 1992-05-05 Magna Physics Corporation Polyphase switched reluctance motor
SE467852B (en) * 1990-12-28 1992-09-21 Vilmos Toeroek ELECTRIC ENGINE
US5239217A (en) 1992-05-18 1993-08-24 Emerson Electric Co. Redundant switched reluctance motor
US5331246A (en) 1992-12-30 1994-07-19 Dana Corporation Coil assembly retainer for electric motor
US5604388A (en) 1994-02-16 1997-02-18 Emerson Electric Co. Switched reluctance rotor molded lug
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US5489810A (en) * 1994-04-20 1996-02-06 Sundstrand Corporation Switched reluctance starter/generator
GB9506461D0 (en) * 1995-03-29 1995-05-17 Switched Reluctance Drives Ltd Single-phase variable reluctance motor having permanent magnets bedded within a phase winding
US5877572A (en) 1996-10-01 1999-03-02 Emerson Electric Co. Reduced noise reluctance machine

Also Published As

Publication number Publication date
EP0881755A3 (en) 2000-04-19
CA2235056C (en) 2003-03-18
EP0881755A2 (en) 1998-12-02
DE881755T1 (en) 1999-06-10
US6232693B1 (en) 2001-05-15

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MKEX Expiry

Effective date: 20180514