GB1323342A - Brushless dc electric motors - Google Patents

Brushless dc electric motors

Info

Publication number
GB1323342A
GB1323342A GB1323342DA GB1323342A GB 1323342 A GB1323342 A GB 1323342A GB 1323342D A GB1323342D A GB 1323342DA GB 1323342 A GB1323342 A GB 1323342A
Authority
GB
United Kingdom
Prior art keywords
motor
output
pilot motor
pilot
bell
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.)
Expired
Application number
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.)
Bpifrance Financement SA
Original Assignee
Agence National de Valorisation de la Recherche ANVAR
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 Agence National de Valorisation de la Recherche ANVAR filed Critical Agence National de Valorisation de la Recherche ANVAR
Publication of GB1323342A publication Critical patent/GB1323342A/en
Expired 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
    • H02K29/06—Motors or generators having non-mechanical commutating devices, e.g. discharge tubes or semiconductor devices with position sensing devices
    • H02K29/12—Motors or generators having non-mechanical commutating devices, e.g. discharge tubes or semiconductor devices with position sensing devices using detecting coils using the machine windings as detecting coil
    • 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
    • H02K29/06—Motors or generators having non-mechanical commutating devices, e.g. discharge tubes or semiconductor devices with position sensing devices
    • 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
    • H02K29/06—Motors or generators having non-mechanical commutating devices, e.g. discharge tubes or semiconductor devices with position sensing devices
    • H02K29/10—Motors or generators having non-mechanical commutating devices, e.g. discharge tubes or semiconductor devices with position sensing devices using light effect devices

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Control Of Motors That Do Not Use Commutators (AREA)
  • Brushless Motors (AREA)
  • Permanent Magnet Type Synchronous Machine (AREA)

Abstract

1323342 Electric motors; inverting AGENCE NATIONALE POUR LA VALORISATION DE LA RECHERCHE 9 June 1970 [10 June 1969] 27726/70 Headings H2A and H2F In a brushless D.C. motor, the iron rotor 25 is bell-shaped and carries a series of permanent magnets A 1 ... A 8 on its inner surface which co-operate with main winding B 1 B<SP>1</SP> 1 ... B 3 B<SP>1</SP> 3 mounted circumferentially on the stator core Fe. A flat magnet A 9 on the base of the bell, Figs. 4 and 5 (not shown), provides 4 pole pairs which co-operate with windings (b 1 , b<SP>1</SP> 1 ... b 3 , b<SP>1</SP> 3 ) on the end face of the stator core to control electronic switching devices supplying current to the main windings. The ring Fe may be of non-ferromagnetic plastics material. The motor may be used as a pilot motor in a D.C.-A.C. converter employing a transistor bridge T 1 -T<SP>1</SP> 3 , Fig. 6. The motor m drives a position sensor CT which may be an inductive pick-up of the type depicted in Figs. 4 and 5. The output frequency may be varied by altering the speed of the pilot motor. In a constant frequency converter, Fig. 7 (not shown), the transistors are triggered by the output signal of a synchro driven by the pilot motor whose speed is stabilized by a tuning fork oscillator. The output phase sequence may be reversed by reversing the pilot motor or by altering the output of the sensor CT.
GB1323342D 1969-06-10 1970-06-09 Brushless dc electric motors Expired GB1323342A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR6919106A FR2049422A6 (en) 1969-06-10 1969-06-10

Publications (1)

Publication Number Publication Date
GB1323342A true GB1323342A (en) 1973-07-11

Family

ID=9035450

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1323342D Expired GB1323342A (en) 1969-06-10 1970-06-09 Brushless dc electric motors

Country Status (9)

Country Link
BE (1) BE751664A (en)
CH (2) CH540597A (en)
DE (1) DE2065086A1 (en)
ES (1) ES380564A1 (en)
FR (1) FR2049422A6 (en)
GB (1) GB1323342A (en)
LU (1) LU61090A1 (en)
NL (1) NL7008466A (en)
SE (1) SE386026B (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4125792A (en) 1974-05-18 1978-11-14 Papst Motoren Kg Brushless D-C motor
GB2135832A (en) * 1983-02-19 1984-09-05 Servo Motor Technology Corp Magnet motors and generators
GB2349748A (en) * 1999-05-07 2000-11-08 Michael John Flowerday Rotor/stator relationship in a brushless machine

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA1103298A (en) * 1977-02-25 1981-06-16 Masami Uchiyama Electric motor with discrete rotor position and speed sensors
DE3025099A1 (en) * 1980-07-02 1982-01-28 Siemens AG, 1000 Berlin und 8000 München ELECTRONIC COMMUTING DEVICE FOR DC MACHINES WITH ONE OR MORE WINDING STRINGS
FR2504992B1 (en) * 1981-04-30 1986-11-14 Valbrev COMBINATION OF A COMPRESSION OR RELAXATION TURBO-MACHINE AND AN ELECTRIC MOTOR
DE69106776T2 (en) * 1990-04-23 1995-09-07 Ebauches Sa Electromagnetic motor.
DE4213373A1 (en) * 1992-04-23 1993-10-28 Swf Auto Electric Gmbh Brushless DC motor with redn. of current peaks in winding - has numbers of wound stator teeth and of magnetic poles of permanent-magnet rotor in ratio of 3 to 2
DE19541684A1 (en) * 1995-11-08 1997-05-15 Senad Ramic Control of AC motor

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4125792A (en) 1974-05-18 1978-11-14 Papst Motoren Kg Brushless D-C motor
USRE31278E (en) 1974-05-18 1983-06-14 Papst Motoren Gmbh & Co., Kg Brushless D-C motor
GB2135832A (en) * 1983-02-19 1984-09-05 Servo Motor Technology Corp Magnet motors and generators
AU577514B2 (en) * 1983-02-19 1988-09-29 Servo Motor Technology Corporation. Permanent magnet electric machines
GB2349748A (en) * 1999-05-07 2000-11-08 Michael John Flowerday Rotor/stator relationship in a brushless machine

Also Published As

Publication number Publication date
DE2028228A1 (en) 1970-12-17
LU61090A1 (en) 1970-08-10
DE2028228B2 (en) 1975-08-28
NL7008466A (en) 1970-12-14
DE2065086A1 (en) 1972-10-26
BE751664A (en) 1970-12-09
ES380564A1 (en) 1972-10-16
CH540597A (en) 1973-08-15
CH560990A5 (en) 1975-04-15
SE386026B (en) 1976-07-26
FR2049422A6 (en) 1971-03-26

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Legal Events

Date Code Title Description
PS Patent sealed
PCNP Patent ceased through non-payment of renewal fee