GB629885A - Improvements in or relating to liquid slip regulators for induction motors - Google Patents
Improvements in or relating to liquid slip regulators for induction motorsInfo
- Publication number
- GB629885A GB629885A GB18103/44A GB1810344A GB629885A GB 629885 A GB629885 A GB 629885A GB 18103/44 A GB18103/44 A GB 18103/44A GB 1810344 A GB1810344 A GB 1810344A GB 629885 A GB629885 A GB 629885A
- Authority
- GB
- United Kingdom
- Prior art keywords
- current
- motor
- supplied
- winding
- exciter
- 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
- H02P25/24—Variable impedance in stator or rotor circuit
- H02P25/26—Variable impedance in stator or rotor circuit with arrangements for controlling secondary impedance
Abstract
629,885. Automatic current control systems. BRITISH THOMSON-HOUSTON CO., Ltd. Sept. 22, 1944, No. 18103. Convention date, Sept. 23, 1943. [Class 38 (iv)] [Also in Group XXXVII] Current strength.-In a slip regulator for an induction motor 10 the movable electrodes 19 of the liquid resistance 14 in the motor circuit are moved by the D.C. motor 28 supplied by the variable voltage generator 29 which is excited by an armature reaction excited machine 30 having a winding 30e supplied with current in proportion to that supplied to the motor 10. Exciter 30 has also separately excited field winding 30c, acting in the same sense as 30e, and opposing winding 30d supplied by generator 29 through variable resistance. When the motor 10 is connected to the A.C. supply and is running, the current transformer 42 feeds field winding 30e of exciter 30 through rectifier 40 and regulating resistance 41 which is adjusted according to the stable value of current desired to be supplied to the motor 10. On any increase in current above this value the field winding 30e increases the excitation of exciter 30 and hence also the voltage applied to motor 28 which raises the electrodes 19 to tend to restore the current to the predetermined value. On any decrease in current the opposite action results. A transformer 52 having its primary winding across the armature of exciter 30 and its secondary winding across field winding 30c opposes hunting.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US629885XA | 1943-09-23 | 1943-09-23 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB629885A true GB629885A (en) | 1949-09-30 |
Family
ID=22046150
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB18103/44A Expired GB629885A (en) | 1943-09-23 | 1944-09-22 | Improvements in or relating to liquid slip regulators for induction motors |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB629885A (en) |
-
1944
- 1944-09-22 GB GB18103/44A patent/GB629885A/en not_active Expired
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