GB1032066A - Improvements relating to brushless electric motors - Google Patents

Improvements relating to brushless electric motors

Info

Publication number
GB1032066A
GB1032066A GB1698563A GB1698563A GB1032066A GB 1032066 A GB1032066 A GB 1032066A GB 1698563 A GB1698563 A GB 1698563A GB 1698563 A GB1698563 A GB 1698563A GB 1032066 A GB1032066 A GB 1032066A
Authority
GB
United Kingdom
Prior art keywords
pick
signals
coil
coils
high frequency
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
GB1698563A
Inventor
Kazutoshi Ikegami
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.)
Hitachi Ltd
Original Assignee
Hitachi Ltd
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 Hitachi Ltd filed Critical Hitachi Ltd
Priority to GB1698563A priority Critical patent/GB1032066A/en
Publication of GB1032066A publication Critical patent/GB1032066A/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

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Control Of Motors That Do Not Use Commutators (AREA)

Abstract

1,032,066. Commutation arrangements for dynamo - electric machines. KABUSHIKI KAISHA HITACHI SEISAKUSHO. April 30, 1963, No. 16985/63. Heading H2A. In a commutatorless electric motor an inductive, high frequency, pick-off device supplies triggering signals to the transistors which control the sequential supply of power to the armature winding. A high frequency A.C. voltage is induced in secondary winding L2 of the rotary transformer from primary winding L1 which is supplied from oscillator O. This A.C. is detected by either of coils La or Lb, by inductive coupling with rotating coil L3, and is used, after rectification, to cause transistors Ta, Tb to conduct, thus connecting power supply E to each half L4, L5 of the armature winding in sequence and thus cause the permanent magnet rotor R to rotate. In modifications the rotating coil may be replaced by a shaped magnetic member which induces a voltage in the pick-up coils or an electrostatic system may be used. In order to eliminate the spurious signals induced in the second pick-up coil a high frequency signal from the oscillator is introduced in the common lead from the pick-up coils both of which simultaneously pick up signals which are 180 degrees out of phase. If all voltages are made equal then the oscillator signal will cancel each of the pick-up coil signals in turn.
GB1698563A 1963-04-30 1963-04-30 Improvements relating to brushless electric motors Expired GB1032066A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1698563A GB1032066A (en) 1963-04-30 1963-04-30 Improvements relating to brushless electric motors

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1698563A GB1032066A (en) 1963-04-30 1963-04-30 Improvements relating to brushless electric motors

Publications (1)

Publication Number Publication Date
GB1032066A true GB1032066A (en) 1966-06-08

Family

ID=10087160

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1698563A Expired GB1032066A (en) 1963-04-30 1963-04-30 Improvements relating to brushless electric motors

Country Status (1)

Country Link
GB (1) GB1032066A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0145913A2 (en) * 1983-11-29 1985-06-26 Motornetics Corporation Reactance commutated high resolution servo motor system
RU2510126C2 (en) * 2011-08-05 2014-03-20 Открытое акционерное общество "Информационные спутниковые системы" имени академика М.Ф. Решетнёва" Frequency-phase system to control speed of motor rotation

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0145913A2 (en) * 1983-11-29 1985-06-26 Motornetics Corporation Reactance commutated high resolution servo motor system
EP0145913A3 (en) * 1983-11-29 1986-05-21 Motornetics Corporation Reactance commutated high resolution servo motor system
RU2510126C2 (en) * 2011-08-05 2014-03-20 Открытое акционерное общество "Информационные спутниковые системы" имени академика М.Ф. Решетнёва" Frequency-phase system to control speed of motor rotation

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