JPH0421386A - Motor controller - Google Patents

Motor controller

Info

Publication number
JPH0421386A
JPH0421386A JP2124743A JP12474390A JPH0421386A JP H0421386 A JPH0421386 A JP H0421386A JP 2124743 A JP2124743 A JP 2124743A JP 12474390 A JP12474390 A JP 12474390A JP H0421386 A JPH0421386 A JP H0421386A
Authority
JP
Japan
Prior art keywords
allowable current
temperature
current
motor
maximum allowable
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
JP2124743A
Other languages
Japanese (ja)
Inventor
Michio Takemura
Original Assignee
Toshiba 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 Toshiba Corp filed Critical Toshiba Corp
Priority to JP2124743A priority Critical patent/JPH0421386A/en
Publication of JPH0421386A publication Critical patent/JPH0421386A/en
Pending legal-status Critical Current

Links

Abstract

PURPOSE: To exhibit transient capacity higher than rated capacity without sacrifice of motor protective function by operating an allowable current value based on correlation between a maximum allowable current value and a maximum allowable temperature value and then setting an allowable current value for a current reference based on the operation results.
CONSTITUTION: An allowable current value curve K is set such that the maximum allowable current A and maximum allowable temperature C are in approximately reverse proportional relation within a range below the maximum allowable current A and maximum allowable temperature C. According to an allowable current curve K representing a relation between an allowable current IK and a motor temperature T detected through a temperature detector 22, an allowable current higher than a continuous rated current B and lower than a maximum allowable current A is set when the motor temperature T is low, and the allowable current IK decrease as the motor temperature T increases to be finally settled at the continuous rated current B of a motor 20. When the motor temperature exceeds the maximum allowable temperature C, the allowable current IK is brought to zero in order to stop the motor 20.
COPYRIGHT: (C)1992,JPO&Japio
JP2124743A 1990-05-15 1990-05-15 Motor controller Pending JPH0421386A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2124743A JPH0421386A (en) 1990-05-15 1990-05-15 Motor controller

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2124743A JPH0421386A (en) 1990-05-15 1990-05-15 Motor controller

Publications (1)

Publication Number Publication Date
JPH0421386A true JPH0421386A (en) 1992-01-24

Family

ID=14893015

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2124743A Pending JPH0421386A (en) 1990-05-15 1990-05-15 Motor controller

Country Status (1)

Country Link
JP (1) JPH0421386A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007525613A (en) * 2004-02-03 2007-09-06 ザ ビーオーシー グループ ピーエルシー Exhaust system
JP2008522568A (en) * 2004-11-25 2008-06-26 シーメンス アクチエンゲゼルシヤフト Method and apparatus for changing the rated current
JP2009136061A (en) * 2007-11-29 2009-06-18 Mitsuba Corp Control device of switched reluctance motor
EP2857691A1 (en) * 2013-10-01 2015-04-08 Grundfos Holding A/S Limiting the power of a pump depending on two measured temperatures
CN111654228A (en) * 2020-06-11 2020-09-11 上海有个机器人有限公司 Torque control method and device of motor, controller and motor

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007525613A (en) * 2004-02-03 2007-09-06 ザ ビーオーシー グループ ピーエルシー Exhaust system
JP2008522568A (en) * 2004-11-25 2008-06-26 シーメンス アクチエンゲゼルシヤフト Method and apparatus for changing the rated current
US7952311B2 (en) 2004-11-25 2011-05-31 Siemens Aktiengesellschaft Method and apparatus for variation of a rated current
JP2009136061A (en) * 2007-11-29 2009-06-18 Mitsuba Corp Control device of switched reluctance motor
EP2857691A1 (en) * 2013-10-01 2015-04-08 Grundfos Holding A/S Limiting the power of a pump depending on two measured temperatures
CN104514732A (en) * 2013-10-01 2015-04-15 格兰富控股联合股份公司 Method for controlling power of pump device, and pump device
US9982675B2 (en) 2013-10-01 2018-05-29 Grundfos Holding A/S Method for controlling the power of a pump device and pump device
RU2664265C2 (en) * 2013-10-01 2018-08-15 Грундфос Холдинг А/С Method of pump power control and pump
CN111654228A (en) * 2020-06-11 2020-09-11 上海有个机器人有限公司 Torque control method and device of motor, controller and motor

Similar Documents

Publication Publication Date Title
JPH0421386A (en) Motor controller
EP0001003A3 (en) Apparatus and method for operating a dynamo-eletric machine
JPS552328A (en) Field system controller of synchronous motor
JPH03121918A (en) Airconditioning device for automobile
JPS637194A (en) Protecting method for overload of variable speed motor
JPH0270234A (en) Reactive power compensator
JPH02181209A (en) Controller of reactive power compensating device
JPH02157557A (en) Control device of air conditioner
JPH0340794A (en) Controller for induction motor
JPH02273023A (en) Semiconductor circuit breaker
JPH03245721A (en) Circuit breaker
JPH03279191A (en) Control device for escalator
JPS5317948A (en) Protective circuit for overcurrent
JPH04168921A (en) Reactive power compensator
JPH02250697A (en) Open-phase detector for ac servo device
JPH0496625A (en) Reverse power flow suppressor
JPS54115724A (en) Current limiting method for motor
JPS5357445A (en) Control and protection process for dc power
JPS5421550A (en) Protective relay system
JPH0255597A (en) Motor protector
JPH04217736A (en) Controlling method for air conditioner
JPS5411422A (en) Fault detector for thyristor converter
JPH03276077A (en) Power source protecting circuit
JPH03294773A (en) Operation control device in cooling device
JPH02101991A (en) Motor protective relay