JPS5768657A - Synchronous motor - Google Patents

Synchronous motor

Info

Publication number
JPS5768657A
JPS5768657A JP14443380A JP14443380A JPS5768657A JP S5768657 A JPS5768657 A JP S5768657A JP 14443380 A JP14443380 A JP 14443380A JP 14443380 A JP14443380 A JP 14443380A JP S5768657 A JPS5768657 A JP S5768657A
Authority
JP
Japan
Prior art keywords
motor
phase
current
size
permanent magnet
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.)
Pending
Application number
JP14443380A
Other languages
Japanese (ja)
Inventor
Toshihiko Nakajima
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 JP14443380A priority Critical patent/JPS5768657A/en
Publication of JPS5768657A publication Critical patent/JPS5768657A/en
Pending 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
    • H02K29/08—Motors or generators having non-mechanical commutating devices, e.g. discharge tubes or semiconductor devices with position sensing devices using magnetic effect devices, e.g. Hall-plates, magneto-resistors

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Brushless Motors (AREA)

Abstract

PURPOSE:To increase efficiency of a synchronous motor by a method wherein the size of the current supplied to the motor is controlled according to the difference determined by detecting and then comparing the permanent magnet rotor rotation phase and the phase of the current or voltage applied to the motor. CONSTITUTION:A sinusoidal wave current is applied to a stator coil main winding 8. The rotating magnetic field generated by a current that runs in the auxiliary winding 9 causes a permanent magnet rotor 1 to rotate. A magnetic field sensing device 5 detects the rotation phase B of the permanent magnet rotor 1 and said rotation phase B is compared in a phase comparator 11 with the phase A of the current supplied to the motor, and the size of load torque is determined. A voltage whose size corresponds to the difference between the rotation phase B and the phase A of the current supplied to the motor is applied, for example, to the base of a control transistor 12, thereby regulating the size of the current to be applied to the motor.
JP14443380A 1980-10-17 1980-10-17 Synchronous motor Pending JPS5768657A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP14443380A JPS5768657A (en) 1980-10-17 1980-10-17 Synchronous motor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP14443380A JPS5768657A (en) 1980-10-17 1980-10-17 Synchronous motor

Publications (1)

Publication Number Publication Date
JPS5768657A true JPS5768657A (en) 1982-04-27

Family

ID=15362081

Family Applications (1)

Application Number Title Priority Date Filing Date
JP14443380A Pending JPS5768657A (en) 1980-10-17 1980-10-17 Synchronous motor

Country Status (1)

Country Link
JP (1) JPS5768657A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20000054004A (en) * 2000-05-17 2000-09-05 고종선 Single-phase Inductance Type PMSM

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20000054004A (en) * 2000-05-17 2000-09-05 고종선 Single-phase Inductance Type PMSM

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