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IT1261598B - Motore elettrico a magneti permanenti con coppia di riluttanza ridotta - Google Patents

Motore elettrico a magneti permanenti con coppia di riluttanza ridotta

Info

Publication number
IT1261598B
IT1261598B ITTO930716A ITTO930716A IT1261598B IT 1261598 B IT1261598 B IT 1261598B IT TO930716 A ITTO930716 A IT TO930716A IT TO930716 A ITTO930716 A IT TO930716A IT 1261598 B IT1261598 B IT 1261598B
Authority
IT
Italy
Prior art keywords
magnets
correspondence
points
air gap
reluctance torque
Prior art date
Application number
ITTO930716A
Other languages
English (en)
Inventor
Sebastiano Acquaviva
Original Assignee
Gate Spa
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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=11411767&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=IT1261598(B) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Gate Spa filed Critical Gate Spa
Priority to ITTO930716A priority Critical patent/IT1261598B/it
Publication of ITTO930716A0 publication Critical patent/ITTO930716A0/it
Priority to DE69405182T priority patent/DE69405182T2/de
Priority to EP94115158A priority patent/EP0647010B1/en
Priority to US08/314,994 priority patent/US6181035B1/en
Publication of ITTO930716A1 publication Critical patent/ITTO930716A1/it
Application granted granted Critical
Publication of IT1261598B publication Critical patent/IT1261598B/it

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
    • H02K21/22—Synchronous motors having permanent magnets; Synchronous generators having permanent magnets with stationary armatures and rotating magnets with magnets rotating around the armatures, e.g. flywheel magnetos
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Permanent Field Magnets Of Synchronous Machinery (AREA)
  • Iron Core Of Rotating Electric Machines (AREA)
  • Reciprocating, Oscillating Or Vibrating Motors (AREA)
  • Permanent Magnet Type Synchronous Machine (AREA)

Abstract

Un motore brushless comprende: un rotore (R) con 2n (n=1, 2, 3,...) magneti permanenti (M) uniformemente spaziati; uno statore (ST) separato dal rotore (R) da un traferro (T) di ampiezza w presentante una pluralità di cave (C) separate da intervalli di estensione uniforme p; in cui, al fine di ridurre la coppia riluttanza (o cogging torque) i magneti permanenti (M) sono spaziati e sagomati in modo tale che, definita f(x) una funzione rappresentante la densità di energia magnetica immagazzinata nel traferro (T), essendo x una coordinata lineare presa lungo il traferro, ed avendo f(x) in corrispondenza dei magneti (M) un andamento sostanzialmente costante con un valore pari a 2f0, la funzione f(x) soddisfa alle seguenti condizioni:- per almeno un valore di x in un intervallo compreso tra due magneti (M) f(x) è sostanzialmente costante,- essendo (x1, x2 ) due punti in cui f(x)=f0, sostanzialmente prossimi a due estremità qualsiasi dei magneti (M), quando uno dei due punti (x1, x2) si trova in corrispondenza di una delle cave (C) anche l'altro dei due punti (x1, x2 ) si trova in corrispondenza di una delle cave (C).(Figura 3).
ITTO930716A 1993-09-30 1993-09-30 Motore elettrico a magneti permanenti con coppia di riluttanza ridotta IT1261598B (it)

Priority Applications (4)

Application Number Priority Date Filing Date Title
ITTO930716A IT1261598B (it) 1993-09-30 1993-09-30 Motore elettrico a magneti permanenti con coppia di riluttanza ridotta
DE69405182T DE69405182T2 (de) 1993-09-30 1994-09-27 Dauermagneten-Elektromotor mit niedrigem pulsierenden Drehmoment
EP94115158A EP0647010B1 (en) 1993-09-30 1994-09-27 Electric motor with permanent magnets and reduced cogging torque
US08/314,994 US6181035B1 (en) 1993-09-30 1994-09-29 Permanent magnet electric motor having reduced cogging torque

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
ITTO930716A IT1261598B (it) 1993-09-30 1993-09-30 Motore elettrico a magneti permanenti con coppia di riluttanza ridotta

Publications (3)

Publication Number Publication Date
ITTO930716A0 ITTO930716A0 (it) 1993-09-30
ITTO930716A1 ITTO930716A1 (it) 1995-03-30
IT1261598B true IT1261598B (it) 1996-05-23

Family

ID=11411767

Family Applications (1)

Application Number Title Priority Date Filing Date
ITTO930716A IT1261598B (it) 1993-09-30 1993-09-30 Motore elettrico a magneti permanenti con coppia di riluttanza ridotta

Country Status (4)

Country Link
US (1) US6181035B1 (it)
EP (1) EP0647010B1 (it)
DE (1) DE69405182T2 (it)
IT (1) IT1261598B (it)

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DK2548289T3 (da) 2010-03-15 2020-02-17 Motor Excellence Llc Tværgående og/eller kommuterede strømningssystemer med faseforskydning
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CN105005692B (zh) * 2015-07-08 2018-09-28 三峡大学 一种基于解析法的永磁电机磁场分析与转矩计算方法
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Also Published As

Publication number Publication date
ITTO930716A0 (it) 1993-09-30
DE69405182D1 (de) 1997-10-02
US6181035B1 (en) 2001-01-30
EP0647010B1 (en) 1997-08-27
DE69405182T2 (de) 1998-03-12
ITTO930716A1 (it) 1995-03-30
EP0647010A1 (en) 1995-04-05

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Legal Events

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TA Fee payment date (situation as of event date), data collected since 19931001

Effective date: 19990331