JPS6454799U - - Google Patents

Info

Publication number
JPS6454799U
JPS6454799U JP14778587U JP14778587U JPS6454799U JP S6454799 U JPS6454799 U JP S6454799U JP 14778587 U JP14778587 U JP 14778587U JP 14778587 U JP14778587 U JP 14778587U JP S6454799 U JPS6454799 U JP S6454799U
Authority
JP
Japan
Prior art keywords
winding temperature
motor winding
motor
circuit
frequency
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
JP14778587U
Other languages
English (en)
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 filed Critical
Priority to JP14778587U priority Critical patent/JPS6454799U/ja
Publication of JPS6454799U publication Critical patent/JPS6454799U/ja
Pending legal-status Critical Current

Links

Landscapes

  • Control Of Ac Motors In General (AREA)

Description

【図面の簡単な説明】
第1図は本考案装置の模式図、第2図はモータ
回転数の経時的変化を示すグラフ、第3図はモー
タ巻線温度の経時的変化を示すグラフ、第4図は
従来装置の模式図、第5図は負荷トルクが経時的
に変化する場合の一例を示すグラフ、第6図は従
来のモータ回転数の制御パターンを示すグラフ、
第7図は従来のモータ巻線温度の経時的変化を示
すグラフである。 1…操作回路、2…V/F制御回路、3…周波
数制限回路、4…モータ巻線温度推定回路、5…
電流検出回路、6…運転時間検出回路、7…電力
変換器、8…変流器、M…モータ。なお、図中、
同一符号は同一、又は相当部分を示す。

Claims (1)

    【実用新案登録請求の範囲】
  1. モータの運転経歴に基づきモータ巻線温度を推
    定するモータ巻線温度推定回路と、これにより推
    定されたモータ巻線温度が予め定めた規定値を越
    えないよう周波数制限を行う周波数制限回路とを
    具備することを特徴とする可変速制御装置。
JP14778587U 1987-09-28 1987-09-28 Pending JPS6454799U (ja)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP14778587U JPS6454799U (ja) 1987-09-28 1987-09-28

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP14778587U JPS6454799U (ja) 1987-09-28 1987-09-28

Publications (1)

Publication Number Publication Date
JPS6454799U true JPS6454799U (ja) 1989-04-04

Family

ID=31418509

Family Applications (1)

Application Number Title Priority Date Filing Date
JP14778587U Pending JPS6454799U (ja) 1987-09-28 1987-09-28

Country Status (1)

Country Link
JP (1) JPS6454799U (ja)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP5058393B1 (ja) * 2011-09-08 2012-10-24 三菱電機株式会社 電動機の過温度保護装置

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS53147918A (en) * 1977-05-31 1978-12-23 Toshiba Corp Controller for ac motor
JPS5716525A (en) * 1980-03-26 1982-01-28 Elfi Innovationer Method and device for measuring coil temperature for asynchronous motor
JPS58172927A (ja) * 1982-04-02 1983-10-11 株式会社日立製作所 過負荷保護装置

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS53147918A (en) * 1977-05-31 1978-12-23 Toshiba Corp Controller for ac motor
JPS5716525A (en) * 1980-03-26 1982-01-28 Elfi Innovationer Method and device for measuring coil temperature for asynchronous motor
JPS58172927A (ja) * 1982-04-02 1983-10-11 株式会社日立製作所 過負荷保護装置

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP5058393B1 (ja) * 2011-09-08 2012-10-24 三菱電機株式会社 電動機の過温度保護装置
WO2013035185A1 (ja) * 2011-09-08 2013-03-14 三菱電機株式会社 電動機の過温度保護装置
CN103782505A (zh) * 2011-09-08 2014-05-07 三菱电机株式会社 电动机的过热保护装置
EP2755320A4 (en) * 2011-09-08 2015-06-03 Mitsubishi Electric Corp OVERTEMPERATURE PROTECTION FOR MOTORS
US9479107B2 (en) 2011-09-08 2016-10-25 Mitsubishi Electric Corporation Over temperature protection device for electric motors
CN103782505B (zh) * 2011-09-08 2017-04-12 三菱电机株式会社 电动机的过热保护装置

Similar Documents

Publication Publication Date Title
JPS6217473U (ja)
JPS6454799U (ja)
JPS62104534U (ja)
JPH0334694U (ja)
JPS6336835U (ja)
JPS61189498U (ja)
JPS61204210U (ja)
JPS6397399U (ja)
JPS6387273U (ja)
JPH0299220U (ja)
JPS6241391U (ja)
JPS62188993U (ja)
JPS6324997U (ja)
JPS61204211U (ja)
JPS61147600U (ja)
JPS63187593U (ja)
JPS6192149U (ja)
JPS61149999U (ja)
JPS62135596U (ja)
JPS60171095U (ja) 誘導電動機の運転制御装置
JPS6342886U (ja)
JPH01119301U (ja)
JPH01105396U (ja)
JPS61144270U (ja)
JPS63120529U (ja)