[go: up one dir, main page]

ES451281A1 - Improvements introduced in a speed control system to control a rotation speed of an induction engine. (Machine-translation by Google Translate, not legally binding) - Google Patents

Improvements introduced in a speed control system to control a rotation speed of an induction engine. (Machine-translation by Google Translate, not legally binding)

Info

Publication number
ES451281A1
ES451281A1 ES451281A ES451281A ES451281A1 ES 451281 A1 ES451281 A1 ES 451281A1 ES 451281 A ES451281 A ES 451281A ES 451281 A ES451281 A ES 451281A ES 451281 A1 ES451281 A1 ES 451281A1
Authority
ES
Spain
Prior art keywords
induction motor
speed
rotation speed
control
signal
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.)
Expired
Application number
ES451281A
Other languages
Spanish (es)
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 ES451281A priority Critical patent/ES451281A1/en
Publication of ES451281A1 publication Critical patent/ES451281A1/en
Expired legal-status Critical Current

Links

Landscapes

  • Control Of Ac Motors In General (AREA)

Abstract

Improvements introduced in a speed control system for controlling a rotation speed of an induction motor, comprising an induction motor, thyristor means for controlling a voltage applied to said induction motor, a signal speed generator for control to generate a command speed signal for a rotation speed of said induction motor, a tachometer generator connected to said induction motor to generate a speed signal representing the actual rotation speed of said induction motor, a connected subtractor to said control speed signal generator and said tachometer generator to produce a difference signal between output signals from both mentioned generators, phase changing means that respond to said difference signal from said subtracter to produce firing signals for said thyristor means, a loop loop formed by said induction motor, said tachometer generator, said subtracter, said phase changing means and said thyristor means, and a non-linear circuit, arranged in said closed circuit, to produce an output voltage approximately proportional to the square root of an input voltage applied to it. (Machine-translation by Google Translate, not legally binding)
ES451281A 1976-09-06 1976-09-06 Improvements introduced in a speed control system to control a rotation speed of an induction engine. (Machine-translation by Google Translate, not legally binding) Expired ES451281A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
ES451281A ES451281A1 (en) 1976-09-06 1976-09-06 Improvements introduced in a speed control system to control a rotation speed of an induction engine. (Machine-translation by Google Translate, not legally binding)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
ES451281A ES451281A1 (en) 1976-09-06 1976-09-06 Improvements introduced in a speed control system to control a rotation speed of an induction engine. (Machine-translation by Google Translate, not legally binding)

Publications (1)

Publication Number Publication Date
ES451281A1 true ES451281A1 (en) 1977-10-01

Family

ID=8472208

Family Applications (1)

Application Number Title Priority Date Filing Date
ES451281A Expired ES451281A1 (en) 1976-09-06 1976-09-06 Improvements introduced in a speed control system to control a rotation speed of an induction engine. (Machine-translation by Google Translate, not legally binding)

Country Status (1)

Country Link
ES (1) ES451281A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ES2047446A2 (en) * 1992-05-04 1994-02-16 Power Control Distributors Esp Apparatus and three phase induction motor starting and stopping control method.

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ES2047446A2 (en) * 1992-05-04 1994-02-16 Power Control Distributors Esp Apparatus and three phase induction motor starting and stopping control method.

Similar Documents

Publication Publication Date Title
ES379639A1 (en) Vehicle electric motor drive system
ES389212A1 (en) Control circuit for a d.c. motor
GB1419197A (en) A-c adjustable speed motor drive system
GB1015292A (en) Overspeed anticipation device
GB1487976A (en) Paralleling control for phase synchronized generators
ES451281A1 (en) Improvements introduced in a speed control system to control a rotation speed of an induction engine. (Machine-translation by Google Translate, not legally binding)
ES8303843A1 (en) Induction generator frequency control system
FR2290781A1 (en) PROCESS FOR CONTROL OF TORQUE SUPPLIED BY AN ASYNCHRONOUS MACHINE
JPS57132789A (en) Speed controlling device for motor
JPS5622590A (en) Controller for induction motor
JPS5549988A (en) Speed controller
ES451357A3 (en) Apparatus for controlling an elevator cabinet operated by an induction motor. (Machine-translation by Google Translate, not legally binding)
JPS5710587A (en) Magnetic recording and reproducing device
SU716125A1 (en) Freqyency-controllable induction electric drive
ES395817A1 (en) Speed control systems for electric motors
FR2446749A1 (en) Braking control for mine mono-rail - uses logic gate to control servo limiters from speed sensors
SU542837A1 (en) The method of converting a power unit to the load of its own needs
JPS5790088A (en) Apparatus for controlling coke pushing machine
ES460075A2 (en) Electronic speed control for monofasic asynchronous engines. (Machine-translation by Google Translate, not legally binding)
JPS52316A (en) Control system of an ac electric motor
SE8207268L (en) SET AND DEVICE FOR STEERING ENGINE CONTROL
JPS579201A (en) Speed controlling device for electric motor vehicle
JPS6460702A (en) Rotary speed setting circuit for turbine governor
JPS5332321A (en) Acceleration and deceleration control system for ac motor
JPS5556489A (en) Constant speed control device for synchronized running press machine

Legal Events

Date Code Title Description
FD1A Patent lapsed

Effective date: 19981001