GB1248152A - Speed control system for a dynamo-electric machine - Google Patents
Speed control system for a dynamo-electric machineInfo
- Publication number
- GB1248152A GB1248152A GB27646/69A GB2764669A GB1248152A GB 1248152 A GB1248152 A GB 1248152A GB 27646/69 A GB27646/69 A GB 27646/69A GB 2764669 A GB2764669 A GB 2764669A GB 1248152 A GB1248152 A GB 1248152A
- Authority
- GB
- United Kingdom
- Prior art keywords
- commutator
- stator
- converter
- rotor
- field
- 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
- H02P23/00—Arrangements or methods for the control of AC motors characterised by a control method other than vector control
- H02P23/28—Controlling the motor by varying the switching frequency of switches connected to a DC supply and the motor phases
-
- 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)
- Control Of Motors That Do Not Use Commutators (AREA)
Abstract
1,248,152. Control of A.C. motors; inductor alternators. NORTH AMERICAN ROCKWELL CORP. 30 May, 1969, No. 27646/69. Headings H2A and H2J. A dynamo-electric machine co-operates with commutator 14 which supplies signals representing the speed and position of rotor 16 to a converter 18 associated with a power source 20. The converter 18 co-relates the commutator signal with a control signal from speed controller 22, and sets up fixed and travelling magnetic waves in field 24 and stator 26 respectively. The frequency of the input voltage to the stator 26 is adjusted so that the stator and field waves are stationary with respect to each other and separated by a predetermined phase angle, whereby the machine develops a desired torque. The power source 20 comprises a D.C. source 30 connected through oscillator 32, which provides a square wave output, to the commutator 14. Pulses from the commutator are rectified and shaped by bridge 56 receiving power from regulator 58 which operates to provide reduced voltage to the stator windings at decreased speeds of the machine. The regulator 58 generates pulses at a rate proportional to a command signal from the controller 22 through circuit 60 associated with current sensor 70. When the current fed to the stator 26 reaches a critical level, the output to the commutator 14 is reduced. The commutator signal is also applied to a pulse generator 72 connected to a converter 74 which delivers a speed-indicating signal to a differential amplifier 76. The latter also receives the speed command signal, the error signal driving a converter 80 feeding a field current regulator 82. A speed indicator 86 is provided. The converter 18 thus receives the commutator signal to maintain the stator field in step with the rotor field and leading it by a constant phase angle. The stator frequency is automatically maintained at a value proportional to rotor speed. The commutator comprises a primary field winding establishing a field between poles 40 and rotor 42 which is coupled to the rotor of the machine. A series of trains of pulses, each train being followed by a period of substantially zero voltage, is induced in secondary coils 46. The rotor 42 comprises a magnetic portion 50 and a non-magnetic portion 52. The pulses which are induced in the coils 46 are fed to the converter 18.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB27646/69A GB1248152A (en) | 1969-05-30 | 1969-05-30 | Speed control system for a dynamo-electric machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB27646/69A GB1248152A (en) | 1969-05-30 | 1969-05-30 | Speed control system for a dynamo-electric machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1248152A true GB1248152A (en) | 1971-09-29 |
Family
ID=10262977
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB27646/69A Expired GB1248152A (en) | 1969-05-30 | 1969-05-30 | Speed control system for a dynamo-electric machine |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB1248152A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110336419A (en) * | 2019-08-21 | 2019-10-15 | 陈伯川 | Regulate and control the multifunctional speed control electric system of power supply or conversion power generation by command speed |
-
1969
- 1969-05-30 GB GB27646/69A patent/GB1248152A/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110336419A (en) * | 2019-08-21 | 2019-10-15 | 陈伯川 | Regulate and control the multifunctional speed control electric system of power supply or conversion power generation by command speed |
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