GB1192861A - Improvements in Variable Speed Induction Motors - Google Patents
Improvements in Variable Speed Induction MotorsInfo
- Publication number
- GB1192861A GB1192861A GB4193/68A GB419368A GB1192861A GB 1192861 A GB1192861 A GB 1192861A GB 4193/68 A GB4193/68 A GB 4193/68A GB 419368 A GB419368 A GB 419368A GB 1192861 A GB1192861 A GB 1192861A
- Authority
- GB
- United Kingdom
- Prior art keywords
- speed
- flux
- rotor
- speeds
- reduced
- 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
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K17/00—Asynchronous induction motors; Asynchronous induction generators
- H02K17/02—Asynchronous induction motors
- H02K17/34—Cascade arrangement of an asynchronous motor with another dynamo-electric motor or converter
- H02K17/36—Cascade arrangement of an asynchronous motor with another dynamo-electric motor or converter with another asynchronous induction motor
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K1/00—Details of the magnetic circuit
- H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
- H02K1/12—Stationary parts of the magnetic circuit
- H02K1/16—Stator cores with slots for windings
- H02K1/165—Shape, form or location of the slots
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K17/00—Asynchronous induction motors; Asynchronous induction generators
- H02K17/02—Asynchronous induction motors
- H02K17/04—Asynchronous induction motors for single phase current
- H02K17/06—Asynchronous induction motors for single phase current having windings arranged for permitting pole-changing
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K17/00—Asynchronous induction motors; Asynchronous induction generators
- H02K17/02—Asynchronous induction motors
- H02K17/22—Asynchronous induction motors having rotors with windings connected to slip-rings
- H02K17/24—Asynchronous induction motors having rotors with windings connected to slip-rings in which both stator and rotor are fed with AC
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Control Of Multiple Motors (AREA)
- Control Of Ac Motors In General (AREA)
Abstract
1,192,861. Induction motors. LICENTIA PATENT - VERWALTUNGS - G.m.b.H. 26 Jan., 1968 [27 Jan., 1967], No. 4193/68. Heading H2A. In a change-speed induction motor, especially for washing machines, the speed range of rotor 4 is increased by the use of the sum and difference of two slightly different flux speeds. The flux speed of one member could be reduced by leaving some slots unwound. But preferably the flux speed of stator 1 is slightly reduced by removing some of the stator teeth at 24, see Fig. 2, and crowding the windings into the remaining slots so that the effective pole-pitch is reduced. The rotor 4 carries a normal primary winding, and the two field systems are linked by a freerunning squirrel-cage intermediate rotor 8. Thus the two flux speeds are 2700 R.P.M. and 3000 R.P.M. respectively, giving speeds of 5700 R.P.M. and 300 R.P.M., i.e. a ratio of 1: 19. The intermediate rotor preferably has two separate squirrel-cages 9, 10 and these support the rotor by means of end shields 11 and 12 which also act as fans. The brush-gear is fully encapsulated. The motor may be of shaded-pole or capacitor type and either or both primary winding may have 2:1 polechanging to extend the speed-range. Both primary windings may be energized together in series or parallel, and either may be D.C. excited through a rectifier (Fig. 4, not shown) to produce the effective speed of one or other primary flux. The capacitor may be used for resonant self-excitation of either member, the speed being controlled by resistors.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DEL0055598 | 1967-01-27 | ||
DE19671638349 DE1638349B1 (en) | 1967-01-27 | 1967-01-27 | SPEED SWITCHABLE INDUCTION MOTOR ESPECIALLY FOR WASHING MACHINES |
Publications (1)
Publication Number | Publication Date |
---|---|
GB1192861A true GB1192861A (en) | 1970-05-20 |
Family
ID=25753971
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB4193/68A Expired GB1192861A (en) | 1967-01-27 | 1968-01-26 | Improvements in Variable Speed Induction Motors |
Country Status (2)
Country | Link |
---|---|
DE (1) | DE1638349B1 (en) |
GB (1) | GB1192861A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2163608A (en) * | 1984-08-11 | 1986-02-26 | Skf Textilmasch Komponenten | Spinning or twisting element with individual drive |
WO2008004266A2 (en) * | 2006-07-06 | 2008-01-10 | K4A Srl | Twin variable speed asyncronous generator |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102007006856B4 (en) * | 2007-02-12 | 2009-05-07 | Siemens Ag | Electric machine with a stator, a rotor, an interrotor and a coolable housing |
EP2211446A1 (en) * | 2009-01-23 | 2010-07-28 | Mikayel M. Tayegyan | Asynchronous machine |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2419431A (en) * | 1947-04-22 | williams | ||
DE610161C (en) * | 1931-03-20 | 1935-03-04 | Peter A Fridkin Dipl Ing | Card with electric drive |
US2119205A (en) * | 1936-04-18 | 1938-05-31 | Leeds & Northrup Co | Method and system of motor control |
DE841019C (en) * | 1949-08-20 | 1952-06-09 | Siemens Ag | Gear for adjusting tangentially adjustable poles in electrical machines, especially rotary field motors |
DE909478C (en) * | 1951-11-10 | 1954-04-22 | Robert Braun Dipl Ing | Multi-phase asynchronous machine |
-
1967
- 1967-01-27 DE DE19671638349 patent/DE1638349B1/en active Pending
-
1968
- 1968-01-26 GB GB4193/68A patent/GB1192861A/en not_active Expired
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2163608A (en) * | 1984-08-11 | 1986-02-26 | Skf Textilmasch Komponenten | Spinning or twisting element with individual drive |
WO2008004266A2 (en) * | 2006-07-06 | 2008-01-10 | K4A Srl | Twin variable speed asyncronous generator |
WO2008004266A3 (en) * | 2006-07-06 | 2008-02-21 | Vladimiro Lidak | Twin variable speed asyncronous generator |
Also Published As
Publication number | Publication date |
---|---|
DE1638349B1 (en) | 1971-03-04 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
ES371105A1 (en) | Static converter with dc intermediate circuit for controlling the speed of a three phase motor | |
GB1231574A (en) | ||
GB1192861A (en) | Improvements in Variable Speed Induction Motors | |
GB1257195A (en) | ||
GB989634A (en) | Frequency converter dynamoelectric machine | |
GB1396579A (en) | Electrical installations | |
GB1238797A (en) | ||
US2728038A (en) | Two-speed single-phase motor | |
US3406323A (en) | Synchronous machine with single rotor | |
US2791735A (en) | Dynamically braked polyphase induction motor | |
GB1265374A (en) | ||
GB1079961A (en) | Improvements in or relating to rotating electrical machinery | |
SU723722A1 (en) | Combined three-phase single layer winding | |
GB1130116A (en) | A shaded-pole motor | |
GB1305360A (en) | ||
GB1080749A (en) | Improvements in or relating to rotary electric machines | |
GB777278A (en) | Improvements in or relating to multi-phase induction motors | |
GB1490980A (en) | Brushless ac synchronous motors | |
GB196586A (en) | Improvements in or relating to synchronized asynchronous machines | |
GB1123492A (en) | Improvements in or relating to rotary electric machines | |
JPS56121360A (en) | Brushless motor | |
GB1160526A (en) | Rotating Electrical Frequency Converting Apparatus | |
GB1031669A (en) | Two-layer winding for induction machines | |
GB647681A (en) | Improvements in and relating to dynamo electric machines | |
GB1060570A (en) | Axial air gap motor adapted for canned pump |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
PS | Patent sealed [section 19, patents act 1949] | ||
PLNP | Patent lapsed through nonpayment of renewal fees |