JPH0336985A - Motor-driven blower - Google Patents

Motor-driven blower

Info

Publication number
JPH0336985A
JPH0336985A JP1168353A JP16835389A JPH0336985A JP H0336985 A JPH0336985 A JP H0336985A JP 1168353 A JP1168353 A JP 1168353A JP 16835389 A JP16835389 A JP 16835389A JP H0336985 A JPH0336985 A JP H0336985A
Authority
JP
Japan
Prior art keywords
comparator
output
input voltage
voltage
motor
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
JP1168353A
Other languages
Japanese (ja)
Inventor
Hirotaka Kawasaki
Kouichi Hazumi
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.)
Mitsubishi Electric Corp
Original Assignee
Mitsubishi Electric Corp
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 Mitsubishi Electric Corp filed Critical Mitsubishi Electric Corp
Priority to JP1168353A priority Critical patent/JPH0336985A/en
Publication of JPH0336985A publication Critical patent/JPH0336985A/en
Pending legal-status Critical Current

Links

Abstract

PURPOSE: To prevent a power device of an inverter from damaging due to an abnormal overheat by detecting the temperature of the device, and lowering or stopping the output of the inverter if the detected voltage is a predetermined temperature or higher.
CONSTITUTION: If the temperature of an arranging part of a thermistor 33 becomes high, the electric resistance of the thermistor 33 gradually increases, and an input voltage (c) to a comparator 31 also rises. If the input voltage C exceeds V0, the input voltage (c) to the comparator 31 is inverted from negative to positive. The comparator 31 is turned OFF by the inversion, and the output (d) of the comparator 31 is opened. When the output (d) of the comparator 31 is opened, the input voltage (e) of a comparator 32 is inverted from negative to positive by VH. The comparator 32 is turned ON by the inversion, and the output voltage (f) of the comparator 32 becomes VL. Thus, a control voltage (z) also becomes VL, and a motor 11 is stopped.
COPYRIGHT: (C)1991,JPO&Japio
JP1168353A 1989-06-30 1989-06-30 Motor-driven blower Pending JPH0336985A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1168353A JPH0336985A (en) 1989-06-30 1989-06-30 Motor-driven blower

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1168353A JPH0336985A (en) 1989-06-30 1989-06-30 Motor-driven blower

Publications (1)

Publication Number Publication Date
JPH0336985A true JPH0336985A (en) 1991-02-18

Family

ID=15866497

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1168353A Pending JPH0336985A (en) 1989-06-30 1989-06-30 Motor-driven blower

Country Status (1)

Country Link
JP (1) JPH0336985A (en)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH10225176A (en) * 1997-02-05 1998-08-21 Smc Corp Control method of brushless motor, and device thereof
JP2007228705A (en) * 2006-02-22 2007-09-06 Nidec Shibaura Corp Motor driver
JP2008079434A (en) * 2006-09-21 2008-04-03 Ckd Corp Motor control unit in rotating device
JP2010158107A (en) * 2008-12-26 2010-07-15 Tsubaki Emerson Co Motor drive and motor apparatus
US7928679B2 (en) 2006-09-27 2011-04-19 Vacon Oyj Protection arrangement of an electric motor
JP2014183659A (en) * 2013-03-19 2014-09-29 Minebea Co Ltd Drive controller for fan motor
CN107052904A (en) * 2017-04-16 2017-08-18 赵洁 A kind of safety monitoring device of Digit Control Machine Tool

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5336618A (en) * 1976-09-17 1978-04-05 Shinko Electric Co Ltd Commutatorless motor
JPS6051490A (en) * 1983-08-29 1985-03-22 Aichi Electric Mfg Co Ltd Drive controller of brushless motor
JPS61258698A (en) * 1985-05-13 1986-11-17 Toshiba Corp Drive device for brushless motor
JPS6340197B2 (en) * 1979-08-24 1988-08-10 Takeda Chemical Industries Ltd
JPH01129792A (en) * 1987-11-12 1989-05-23 Matsushita Electric Ind Co Ltd Brushless motor protective device

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5336618A (en) * 1976-09-17 1978-04-05 Shinko Electric Co Ltd Commutatorless motor
JPS6340197B2 (en) * 1979-08-24 1988-08-10 Takeda Chemical Industries Ltd
JPS6051490A (en) * 1983-08-29 1985-03-22 Aichi Electric Mfg Co Ltd Drive controller of brushless motor
JPS61258698A (en) * 1985-05-13 1986-11-17 Toshiba Corp Drive device for brushless motor
JPH01129792A (en) * 1987-11-12 1989-05-23 Matsushita Electric Ind Co Ltd Brushless motor protective device

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH10225176A (en) * 1997-02-05 1998-08-21 Smc Corp Control method of brushless motor, and device thereof
JP2007228705A (en) * 2006-02-22 2007-09-06 Nidec Shibaura Corp Motor driver
JP2008079434A (en) * 2006-09-21 2008-04-03 Ckd Corp Motor control unit in rotating device
US7928679B2 (en) 2006-09-27 2011-04-19 Vacon Oyj Protection arrangement of an electric motor
JP2010158107A (en) * 2008-12-26 2010-07-15 Tsubaki Emerson Co Motor drive and motor apparatus
JP2014183659A (en) * 2013-03-19 2014-09-29 Minebea Co Ltd Drive controller for fan motor
CN107052904A (en) * 2017-04-16 2017-08-18 赵洁 A kind of safety monitoring device of Digit Control Machine Tool

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