JPS555035A - Brushless motor starting system - Google Patents

Brushless motor starting system

Info

Publication number
JPS555035A
JPS555035A JP7653278A JP7653278A JPS555035A JP S555035 A JPS555035 A JP S555035A JP 7653278 A JP7653278 A JP 7653278A JP 7653278 A JP7653278 A JP 7653278A JP S555035 A JPS555035 A JP S555035A
Authority
JP
Japan
Prior art keywords
motor
inverter
electromotive force
detecting
back electromotive
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
JP7653278A
Other languages
Japanese (ja)
Inventor
Takuji Matsumura
Tsunehiro Endo
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 JP7653278A priority Critical patent/JPS555035A/en
Publication of JPS555035A publication Critical patent/JPS555035A/en
Pending legal-status Critical Current

Links

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  • Control Of Motors That Do Not Use Commutators (AREA)

Abstract

PURPOSE: To enable stable and exact starting of a brushless motor of type for detecting the position by speed electromotive force by detecting back electromotive force of the motor to thereby switch the synchronization of the motor.
CONSTITUTION: When a brushless motor is started, the input voltage of a voltage- controlled oscillator 10 is controlled to thereby gradually raise the drive frequency of an inverter 1 to thus accelerate the revolving speed of the motor 2. When the motor 2 reaches the speed that the position of the rotor may be detected by its back electromotive force, a signal is produced from a comparator 11 to shut off the gate signal from the inverter 1 at an inhibit circuit 15 to thereby stop the inverter 1. The induced voltage of the motor 2 is detected during the stopped period of the inverter 1 to synchronize it with the induced voltage of the motor 2 upon detection of the induced voltage to thereby restart the inverter. After the restarting of the inverter 1, the motor 2 is operated by the output of the position detector 3 of the type for detecting the back electromotive force.
COPYRIGHT: (C)1980,JPO&Japio
JP7653278A 1978-06-26 1978-06-26 Brushless motor starting system Pending JPS555035A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP7653278A JPS555035A (en) 1978-06-26 1978-06-26 Brushless motor starting system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP7653278A JPS555035A (en) 1978-06-26 1978-06-26 Brushless motor starting system

Publications (1)

Publication Number Publication Date
JPS555035A true JPS555035A (en) 1980-01-14

Family

ID=13607881

Family Applications (1)

Application Number Title Priority Date Filing Date
JP7653278A Pending JPS555035A (en) 1978-06-26 1978-06-26 Brushless motor starting system

Country Status (1)

Country Link
JP (1) JPS555035A (en)

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57173757A (en) * 1981-03-26 1982-10-26 Siemens Ag Rotor angle measuring device for synchronizer
JPS61135378A (en) * 1984-12-04 1986-06-23 Matsushita Electric Ind Co Ltd Brushless motor drive device
JPS61135389A (en) * 1984-12-04 1986-06-23 Matsushita Electric Ind Co Ltd Brushless motor drive device
DE3934139A1 (en) * 1988-10-17 1990-04-19 Brasil Compressores Sa ELECTRONIC CONTROL CIRCUIT FOR A BRUSHLESS DC MOTOR
JPH02211089A (en) * 1989-02-06 1990-08-22 Nippon Densan Corp Start-up of sensorless brushless motor
FR2644949A1 (en) * 1989-03-27 1990-09-28 Brasil Compressores Sa METHOD AND ELECTRONIC CIRCUIT FOR CONTROLLING A BRUSHLESS CONTINUOUS CURRENT MOTOR
JP2009055681A (en) * 2007-08-24 2009-03-12 Ricoh Co Ltd Motor starting device and motor starting method
US9160263B2 (en) 2010-09-27 2015-10-13 Whirlpool S.A. System and method for monitoring and controlling a brushless electric motor
EP3582389A1 (en) 2018-06-11 2019-12-18 Nidec Sankyo Corporation Brushless dc motor control method and control device

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57173757A (en) * 1981-03-26 1982-10-26 Siemens Ag Rotor angle measuring device for synchronizer
JPS61135378A (en) * 1984-12-04 1986-06-23 Matsushita Electric Ind Co Ltd Brushless motor drive device
JPS61135389A (en) * 1984-12-04 1986-06-23 Matsushita Electric Ind Co Ltd Brushless motor drive device
DE3934139A1 (en) * 1988-10-17 1990-04-19 Brasil Compressores Sa ELECTRONIC CONTROL CIRCUIT FOR A BRUSHLESS DC MOTOR
DE3934139C2 (en) * 1988-10-17 1999-01-07 Brasil Compressores Sa Electronic control circuit for a brushless DC motor
JPH02211089A (en) * 1989-02-06 1990-08-22 Nippon Densan Corp Start-up of sensorless brushless motor
FR2644949A1 (en) * 1989-03-27 1990-09-28 Brasil Compressores Sa METHOD AND ELECTRONIC CIRCUIT FOR CONTROLLING A BRUSHLESS CONTINUOUS CURRENT MOTOR
DE4009258C2 (en) * 1989-03-27 1999-09-02 Brasil Compressores Sa Method and electronic control circuit for starting a brushless slip current motor
JP2009055681A (en) * 2007-08-24 2009-03-12 Ricoh Co Ltd Motor starting device and motor starting method
US9160263B2 (en) 2010-09-27 2015-10-13 Whirlpool S.A. System and method for monitoring and controlling a brushless electric motor
EP3582389A1 (en) 2018-06-11 2019-12-18 Nidec Sankyo Corporation Brushless dc motor control method and control device

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