GB201116214D0 - Power control circuit - Google Patents
Power control circuitInfo
- Publication number
- GB201116214D0 GB201116214D0 GBGB1116214.6A GB201116214A GB201116214D0 GB 201116214 D0 GB201116214 D0 GB 201116214D0 GB 201116214 A GB201116214 A GB 201116214A GB 201116214 D0 GB201116214 D0 GB 201116214D0
- Authority
- GB
- United Kingdom
- Prior art keywords
- excitation
- thyristor
- self
- power control
- residual voltage
- 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
Links
- 230000005284 excitation Effects 0.000 abstract 5
- 238000004804 winding Methods 0.000 abstract 3
- 238000000034 method Methods 0.000 abstract 2
- 230000005669 field effect Effects 0.000 abstract 1
- 230000005389 magnetism Effects 0.000 abstract 1
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K19/00—Synchronous motors or generators
- H02K19/16—Synchronous generators
- H02K19/26—Synchronous generators characterised by the arrangement of exciting windings
- H02K19/28—Synchronous generators characterised by the arrangement of exciting windings for self-excitation
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
- H02P9/00—Arrangements for controlling electric generators for the purpose of obtaining a desired output
- H02P9/08—Control of generator circuit during starting or stopping of driving means, e.g. for initiating excitation
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Control Of Eletrric Generators (AREA)
Abstract
A power control circuit for controlling excitation in a self-excited electrical generator comprises a normally-on power control device arranged to deliver a rectified residual voltage to an excitation winding. This allows the residual voltage required to initiate the self-excitation process to be reduced, thereby allowing the self-excitation process to be initiated more reliably. The circuit receives an ac supply from the main stator and the thyristor delivers half wave rectified current to the current windings. A freewheel diode D is connected across the excitation winding and conducts during negative half cycles when the thyristor is off. The thyristor is controlled by a normally on depletion mode field effect transistor (FET) Q1 which may be operable in two modes: a first (start-up) mode where the device is used to build up the excitation by producing a residual voltage from the residual magnetism in the generator; and a second (steady state) mode where power to the excitation is controlled.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1116214.6A GB2494715B (en) | 2011-09-19 | 2011-09-19 | Power control circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1116214.6A GB2494715B (en) | 2011-09-19 | 2011-09-19 | Power control circuit |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| GB201116214D0 true GB201116214D0 (en) | 2011-11-02 |
| GB2494715A GB2494715A (en) | 2013-03-20 |
| GB2494715B GB2494715B (en) | 2017-02-15 |
Family
ID=44937544
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB1116214.6A Active GB2494715B (en) | 2011-09-19 | 2011-09-19 | Power control circuit |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB2494715B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112438015A (en) * | 2018-07-11 | 2021-03-02 | Abb瑞士股份有限公司 | Method for performing fast demagnetization of a brushless synchronous motor |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2580649B (en) * | 2019-01-20 | 2023-12-20 | Macfarlane Alistair | Improved generator voltage regulator power supply stage |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1232386A (en) * | 1967-07-19 | 1971-05-19 | ||
| JP3517531B2 (en) * | 1996-09-27 | 2004-04-12 | 株式会社明電舎 | Excitation control device for AC generator |
-
2011
- 2011-09-19 GB GB1116214.6A patent/GB2494715B/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112438015A (en) * | 2018-07-11 | 2021-03-02 | Abb瑞士股份有限公司 | Method for performing fast demagnetization of a brushless synchronous motor |
Also Published As
| Publication number | Publication date |
|---|---|
| GB2494715B (en) | 2017-02-15 |
| GB2494715A (en) | 2013-03-20 |
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