JPS57177292A - Dc brushless motor - Google Patents

Dc brushless motor

Info

Publication number
JPS57177292A
JPS57177292A JP56059880A JP5988081A JPS57177292A JP S57177292 A JPS57177292 A JP S57177292A JP 56059880 A JP56059880 A JP 56059880A JP 5988081 A JP5988081 A JP 5988081A JP S57177292 A JPS57177292 A JP S57177292A
Authority
JP
Japan
Prior art keywords
voltage
step
chopper
brushless motor
inverter
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
JP56059880A
Inventor
Kenichi Iizuka
Yuji Kawaguchi
Hideo Uzuhashi
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 JP56059880A priority Critical patent/JPS57177292A/en
Publication of JPS57177292A publication Critical patent/JPS57177292A/en
Application status is Pending legal-status Critical

Links

Classifications

    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02PCONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
    • H02P6/00Arrangements for controlling synchronous motors or other dynamo-electric motors using electronic commutation dependent on the rotor position; Electronic commutators therefor
    • H02P6/08Arrangements for controlling the speed or torque of a single motor
    • H02P6/085Arrangements for controlling the speed or torque of a single motor in a bridge configuration

Abstract

PURPOSE:To enable control of the rotating speed of a DC brushless motor having good power factor by suitably chopping the rectified output voltage of a rectifier via a step-up chopper and a step-down chopper to shape the voltage to flat waveform and supplying the voltage to a polyphase inverter. CONSTITUTION:A step-up chopper 13 is operated in a zone Tb of low rectified voltage Vr from a rectifier of diodes 1, and a step-down chopper 9 is operated in the zone Ta, thereby obtaining a DC voltage Vd by smoothing the output voltage Vc of the chopper 13 as shown. This voltage Vd is supplied to an inverter having a transistor 5, and a DC brushless motor 6 is driven by the output of the inverter. The rotating speed control is performed by varying the DC voltage level by suitably controlled the current flow rates of the choppers 13, 9.
JP56059880A 1981-04-22 1981-04-22 Dc brushless motor Pending JPS57177292A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP56059880A JPS57177292A (en) 1981-04-22 1981-04-22 Dc brushless motor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP56059880A JPS57177292A (en) 1981-04-22 1981-04-22 Dc brushless motor

Publications (1)

Publication Number Publication Date
JPS57177292A true JPS57177292A (en) 1982-10-30

Family

ID=13125896

Family Applications (1)

Application Number Title Priority Date Filing Date
JP56059880A Pending JPS57177292A (en) 1981-04-22 1981-04-22 Dc brushless motor

Country Status (1)

Country Link
JP (1) JPS57177292A (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59149783A (en) * 1983-02-09 1984-08-27 Toshiba Corp Drive device for motor
JPS59230490A (en) * 1983-05-13 1984-12-25 Rohm Co Ltd Drive system of brushless motor
JPS59230489A (en) * 1983-05-13 1984-12-25 Rohm Co Ltd Drive system of brushless motor
EP2043248A1 (en) * 2001-09-29 2009-04-01 Daikin Industries, Ltd. Phase current detection method, inverter control method, motor control method, and apparatuses used in these methods
EP2267882A1 (en) * 2009-06-24 2010-12-29 ebm-papst Mulfingen GmbH & Co. KG Method and control system for controlling a brushless electric motor
WO2017187890A1 (en) * 2016-04-28 2017-11-02 日立工機株式会社 Electric tool

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS50109429A (en) * 1974-02-05 1975-08-28

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS50109429A (en) * 1974-02-05 1975-08-28

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59149783A (en) * 1983-02-09 1984-08-27 Toshiba Corp Drive device for motor
JPS59230490A (en) * 1983-05-13 1984-12-25 Rohm Co Ltd Drive system of brushless motor
JPS59230489A (en) * 1983-05-13 1984-12-25 Rohm Co Ltd Drive system of brushless motor
EP2043248A1 (en) * 2001-09-29 2009-04-01 Daikin Industries, Ltd. Phase current detection method, inverter control method, motor control method, and apparatuses used in these methods
EP2267882A1 (en) * 2009-06-24 2010-12-29 ebm-papst Mulfingen GmbH & Co. KG Method and control system for controlling a brushless electric motor
EP2267883A1 (en) 2009-06-24 2010-12-29 ebm-papst Mulfingen GmbH & Co. KG Method and control system for controlling a brushless electric motor
CN101964621A (en) * 2009-06-24 2011-02-02 依必安-派特穆尔芬根股份有限两合公司 Method and control system for controlling a brushless electric motor
WO2017187890A1 (en) * 2016-04-28 2017-11-02 日立工機株式会社 Electric tool

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