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
Links
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)
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)
| 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. |
-
1976
- 1976-09-06 ES ES451281A patent/ES451281A1/en not_active Expired
Cited By (1)
| 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. |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| FD1A | Patent lapsed |
Effective date: 19981001 |