SE8301002D0 - PERMANENT MAGNET MOTORS AND GENERATORS HAVING MAXIMIZED ENERGY DENSITY AND EFFICIENCY - Google Patents

PERMANENT MAGNET MOTORS AND GENERATORS HAVING MAXIMIZED ENERGY DENSITY AND EFFICIENCY

Info

Publication number
SE8301002D0
SE8301002D0 SE8301002A SE8301002A SE8301002D0 SE 8301002 D0 SE8301002 D0 SE 8301002D0 SE 8301002 A SE8301002 A SE 8301002A SE 8301002 A SE8301002 A SE 8301002A SE 8301002 D0 SE8301002 D0 SE 8301002D0
Authority
SE
Sweden
Prior art keywords
length
permanent magnet
energy density
total
gap
Prior art date
Application number
SE8301002A
Other languages
Swedish (sv)
Other versions
SE8301002L (en
SE441796B (en
Inventor
Jr J T Jackson
Original Assignee
Servo Motor Technology Corp
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 Servo Motor Technology Corp filed Critical Servo Motor Technology Corp
Publication of SE8301002D0 publication Critical patent/SE8301002D0/en
Publication of SE8301002L publication Critical patent/SE8301002L/en
Publication of SE441796B publication Critical patent/SE441796B/en

Links

Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K21/00—Synchronous motors having permanent magnets; Synchronous generators having permanent magnets
    • H02K21/12—Synchronous motors having permanent magnets; Synchronous generators having permanent magnets with stationary armatures and rotating magnets
    • H02K21/14—Synchronous motors having permanent magnets; Synchronous generators having permanent magnets with stationary armatures and rotating magnets with magnets rotating within the armatures
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K1/00—Details of the magnetic circuit
    • H02K1/02—Details of the magnetic circuit characterised by the magnetic material
    • 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
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K23/00—DC commutator motors or generators having mechanical commutator; Universal AC/DC commutator motors
    • H02K23/02—DC commutator motors or generators having mechanical commutator; Universal AC/DC commutator motors characterised by arrangement for exciting
    • H02K23/04—DC commutator motors or generators having mechanical commutator; Universal AC/DC commutator motors characterised by arrangement for exciting having permanent magnet excitation

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Permanent Field Magnets Of Synchronous Machinery (AREA)
  • Iron Core Of Rotating Electric Machines (AREA)
  • Permanent Magnet Type Synchronous Machine (AREA)

Abstract

An electrical permanent magnet motor has a permanent magnet four-pole rotor 110 surrounded by a generally circular stator 122. Air gaps 130, 132 of length Lg are arranged to be substantially longer than in comparable prior art. The flux path through one of four basic radially magnetic circuits of the motor is shown at line 28, and this circuit includes the total magnet length 2Lm as well as the total gap length 2Lg. An enlarged winding 124 substantially fills the gap Lg. The ratio of the total gap length 2Lg to the total magnet length 2Lm is specially selected to strike an optimum balance between the energy density of the rotor 110 and the energy density within the gap Lg without causing irreversible de-magnetization of the rotor 110 and yet yielding a high energy product. <IMAGE>
SE8301002A 1983-02-19 1983-02-23 ELECTRICAL MACHINE SE441796B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB8304655A GB2135832B (en) 1983-02-19 1983-02-19 Magnet motors and generators

Publications (3)

Publication Number Publication Date
SE8301002D0 true SE8301002D0 (en) 1983-02-23
SE8301002L SE8301002L (en) 1984-08-24
SE441796B SE441796B (en) 1985-11-04

Family

ID=10538278

Family Applications (1)

Application Number Title Priority Date Filing Date
SE8301002A SE441796B (en) 1983-02-19 1983-02-23 ELECTRICAL MACHINE

Country Status (8)

Country Link
JP (1) JPS59159655A (en)
AU (1) AU577514B2 (en)
CA (1) CA1186361A (en)
DE (1) DE3306758A1 (en)
FR (1) FR2541833B1 (en)
GB (1) GB2135832B (en)
NL (1) NL8300681A (en)
SE (1) SE441796B (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU577514B2 (en) * 1983-02-19 1988-09-29 Servo Motor Technology Corporation. Permanent magnet electric machines
FR2580874B3 (en) * 1985-04-23 1987-10-09 Renault ELECTRODYNAMIC SYNCH MACHINE
CN105179289B (en) * 2012-05-31 2017-03-22 中山大洋电机股份有限公司 Method for controlling variable-speed fan system
WO2021211082A1 (en) * 2020-04-13 2021-10-21 Tartar Ali Samil A magnetic field routing and electric generation system
CN115267531B (en) * 2022-07-21 2024-09-27 南京理工大学 Deep learning-based permanent magnet synchronous motor uniform demagnetization fault diagnosis method

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB604613A (en) * 1940-08-10 1948-07-07 Philips Nv Improvements in or relating to magnetic-electric systems
GB972364A (en) * 1963-08-20 1964-10-14 Mullard Ltd Improvements in or relating to dynamo-electric machines
FR1404480A (en) * 1964-04-14 1965-07-02 Lip Sa Miniature synchronous motor
FR1574848A (en) * 1968-05-10 1969-07-18
FR2049422A6 (en) * 1969-06-10 1971-03-26 Valroger Pierre De
US3731533A (en) * 1969-10-16 1973-05-08 Dresser Ind Electrical generator having non-salient poles for metering shaft rotation of a turbine assembly
GB1349746A (en) * 1970-06-13 1974-04-10 Emi Ltd Dynamo electric machines
CA1103298A (en) * 1977-02-25 1981-06-16 Masami Uchiyama Electric motor with discrete rotor position and speed sensors
GB1604121A (en) * 1977-04-08 1981-12-02 Sony Corp Dc motors
AU577514B2 (en) * 1983-02-19 1988-09-29 Servo Motor Technology Corporation. Permanent magnet electric machines

Also Published As

Publication number Publication date
FR2541833B1 (en) 1989-06-09
GB8304655D0 (en) 1983-03-23
CA1186361A (en) 1985-04-30
AU1145383A (en) 1984-08-23
SE8301002L (en) 1984-08-24
FR2541833A1 (en) 1984-08-31
AU577514B2 (en) 1988-09-29
JPS59159655A (en) 1984-09-10
NL8300681A (en) 1984-09-17
GB2135832A (en) 1984-09-05
DE3306758A1 (en) 1984-08-30
SE441796B (en) 1985-11-04
GB2135832B (en) 1986-10-08

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