GB1056359A - An a.c. motor speed control system - Google Patents
An a.c. motor speed control systemInfo
- Publication number
- GB1056359A GB1056359A GB43388/63A GB4338863A GB1056359A GB 1056359 A GB1056359 A GB 1056359A GB 43388/63 A GB43388/63 A GB 43388/63A GB 4338863 A GB4338863 A GB 4338863A GB 1056359 A GB1056359 A GB 1056359A
- Authority
- GB
- United Kingdom
- Prior art keywords
- magnetic
- derived
- voltage
- control
- phase
- 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
- H02P27/00—Arrangements or methods for the control of AC motors characterised by the kind of supply voltage
- H02P27/04—Arrangements or methods for the control of AC motors characterised by the kind of supply voltage using variable-frequency supply voltage, e.g. inverter or converter supply voltage
-
- 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
- H02P25/02—Arrangements or methods for the control of AC motors characterised by the kind of AC motor or by structural details characterised by the kind of motor
- H02P25/022—Synchronous motors
- H02P25/024—Synchronous motors controlled by supply frequency
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Superconductive Dynamoelectric Machines (AREA)
Abstract
1,056,359. Converting; control of A.C. motors. ALLMANNA SVENSKA ELEKTRISKA A.B. Nov. 4, 1963 [Nov. 14, 1962], No. 43388/63. Headings H2F and H2J. An A.C. motor is supplied by a converter providing a variable frequency output to give variable speed, and control for the converter is derived from a pair of reluctance type A.C. generator devices having rotating parts driven by the motor shaft. As shown, a rotating part 23 comprises a magnetic semi-cylinder 24 and a non-magnetic semi-cylinder 25. Two magnetic cores 41, 42 for each phase are disposed about the part 23, one above and one below, each bearing a winding fed from a high frequency generator 321 or 322 and connected with oppositely directed rectifiers 211, 221, so that according as whether the magnetic half 24 completes the upper or lower magnetic circuits so a voltage E 2 is derived in one sense or the other. An exactly similar device is associated with the other rotating part 13, but the magnetic and non-magnetic semi-cylinders are displaced by 90 degrees on the shaft. A voltage E 1 is derived from this device, the voltages E 1 , E 2 being alternating voltages having the frequency of the rotor and being 90 degrees phase displaced. These two are added to give a voltage E 5 which is used to control the inverter, similar voltages being derived for the other phases of the three phase supply. To increase speed the phase of the voltage E 5 is advanced, this being effected by varying the magnitude of E 1 relative to E 2 by control of the high frequency generators.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SE1218762 | 1962-11-14 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB1056359A true GB1056359A (en) | 1967-01-25 |
Family
ID=20295298
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB43388/63A Expired GB1056359A (en) | 1962-11-14 | 1963-11-04 | An a.c. motor speed control system |
Country Status (2)
Country | Link |
---|---|
CH (1) | CH403028A (en) |
GB (1) | GB1056359A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3956649A (en) * | 1974-06-20 | 1976-05-11 | Aeroflex Laboratories, Inc. | Brushless rotary signal transducer |
-
1963
- 1963-11-04 GB GB43388/63A patent/GB1056359A/en not_active Expired
- 1963-11-06 CH CH1370463A patent/CH403028A/en unknown
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3956649A (en) * | 1974-06-20 | 1976-05-11 | Aeroflex Laboratories, Inc. | Brushless rotary signal transducer |
Also Published As
Publication number | Publication date |
---|---|
CH403028A (en) | 1965-11-30 |
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