JPS63206187A - Protective device of brushless motor - Google Patents

Protective device of brushless motor

Info

Publication number
JPS63206187A
JPS63206187A JP62036100A JP3610087A JPS63206187A JP S63206187 A JPS63206187 A JP S63206187A JP 62036100 A JP62036100 A JP 62036100A JP 3610087 A JP3610087 A JP 3610087A JP S63206187 A JPS63206187 A JP S63206187A
Authority
JP
Japan
Prior art keywords
current
line voltage
definite
detective
value
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.)
Granted
Application number
JP62036100A
Other languages
Japanese (ja)
Other versions
JPH0732625B2 (en
Inventor
Shiro Maeda
Kenichiro Miura
Kazumi Kamiyama
Shigeru Oshiro
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.)
Panasonic Holdings Corp
Original Assignee
Matsushita Electric Industrial Co 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 Matsushita Electric Industrial Co Ltd filed Critical Matsushita Electric Industrial Co Ltd
Priority to JP62036100A priority Critical patent/JPH0732625B2/en
Publication of JPS63206187A publication Critical patent/JPS63206187A/en
Publication of JPH0732625B2 publication Critical patent/JPH0732625B2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Abstract

PURPOSE: To prevent a brushless motor against destruction by excessive current, by starting the operation of the motor only when the line voltage value is under a definite one, and by turning off a switching means for a limited time when the DC current value exceeds a definite one.
CONSTITUTION: From a DC power source 1 a semiconductor switch group 2 to control the current of a winding 3 of a brushless motor, a phase detective means 5 and a driving means 6 of the switch group 2 are provided. Furthermore, a line voltage detective means 7 to detect the voltage across motor windings and its line voltage judging means 8, a DC current detective means 9 of the switch group 2 and its DC current judging means 10, a timer means 11 and a switching means 12 are provided to constitute a protective device. Thus, the strength of external wind force is detected with line voltage and when the voltage is over the definite value, the switching means 12 is turned off. The load condition is detected by the detective means 9 and when the DC current value is over the definite value, the switching means 12 is turned off for a limited time.
COPYRIGHT: (C)1988,JPO&Japio
JP62036100A 1987-02-19 1987-02-19 Brushless motor protector Expired - Fee Related JPH0732625B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP62036100A JPH0732625B2 (en) 1987-02-19 1987-02-19 Brushless motor protector

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP62036100A JPH0732625B2 (en) 1987-02-19 1987-02-19 Brushless motor protector

Publications (2)

Publication Number Publication Date
JPS63206187A true JPS63206187A (en) 1988-08-25
JPH0732625B2 JPH0732625B2 (en) 1995-04-10

Family

ID=12460346

Family Applications (1)

Application Number Title Priority Date Filing Date
JP62036100A Expired - Fee Related JPH0732625B2 (en) 1987-02-19 1987-02-19 Brushless motor protector

Country Status (1)

Country Link
JP (1) JPH0732625B2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6256181B1 (en) 1998-06-25 2001-07-03 Matsushita Electric Industrial Co., Ltd. Fan drive device

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59114795U (en) * 1983-01-21 1984-08-02

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59114795U (en) * 1983-01-21 1984-08-02

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6256181B1 (en) 1998-06-25 2001-07-03 Matsushita Electric Industrial Co., Ltd. Fan drive device

Also Published As

Publication number Publication date
JPH0732625B2 (en) 1995-04-10

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Legal Events

Date Code Title Description
LAPS Cancellation because of no payment of annual fees