GB538631A - Improvements in methods of controlling the speed of alternating current motors - Google Patents
Improvements in methods of controlling the speed of alternating current motorsInfo
- Publication number
- GB538631A GB538631A GB399340A GB399340A GB538631A GB 538631 A GB538631 A GB 538631A GB 399340 A GB399340 A GB 399340A GB 399340 A GB399340 A GB 399340A GB 538631 A GB538631 A GB 538631A
- Authority
- GB
- United Kingdom
- Prior art keywords
- controlling
- methods
- speed
- alternating current
- transformer
- 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
Classifications
-
- 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
- H02P25/00—Arrangements or methods for the control of AC motors characterised by the kind of AC motor or by structural details
- H02P25/16—Arrangements or methods for the control of AC motors characterised by the kind of AC motor or by structural details characterised by the circuit arrangement or by the kind of wiring
- H02P25/18—Arrangements or methods for the control of AC motors characterised by the kind of AC motor or by structural details characterised by the circuit arrangement or by the kind of wiring with arrangements for switching the windings, e.g. with mechanical switches or relays
- H02P25/20—Arrangements or methods for the control of AC motors characterised by the kind of AC motor or by structural details characterised by the circuit arrangement or by the kind of wiring with arrangements for switching the windings, e.g. with mechanical switches or relays for pole-changing
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Dc Machiner (AREA)
Abstract
538,631. Control of A.C. motors. BRITISH THOMSON-HOUSTON CO., Ltd., WALKER, J. H., and ADKINS, B. March 4, 1940, No. 3993. Addition to 457,460. [Class 38 (iii)] [Also in Group XXXV] In the method of regulating a shunt polyphase commutator motor as in the parent Specification, the induction regulator wound for two pole numbers is constructed so that the induced voltages are unequal in magnitude, the ratio being approximately 3 or 4 to 1. Further features reside in injecting into the rotor circuit an unvarying voltage as by transformer 8, Fig. 4. The unequal windings 9, 10 can be connected in series with each other, or one can be supplied from across the transformer 8. The secondary windings of the regulator can be combined into a single as shown in Fig. 6.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB399340A GB538631A (en) | 1940-03-04 | 1940-03-04 | Improvements in methods of controlling the speed of alternating current motors |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB399340A GB538631A (en) | 1940-03-04 | 1940-03-04 | Improvements in methods of controlling the speed of alternating current motors |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB538631A true GB538631A (en) | 1941-08-11 |
Family
ID=9768736
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB399340A Expired GB538631A (en) | 1940-03-04 | 1940-03-04 | Improvements in methods of controlling the speed of alternating current motors |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB538631A (en) |
-
1940
- 1940-03-04 GB GB399340A patent/GB538631A/en not_active Expired
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