GB1290962A - - Google Patents
Info
- Publication number
- GB1290962A GB1290962A GB1290962DA GB1290962A GB 1290962 A GB1290962 A GB 1290962A GB 1290962D A GB1290962D A GB 1290962DA GB 1290962 A GB1290962 A GB 1290962A
- Authority
- GB
- United Kingdom
- Prior art keywords
- vector
- field
- signals
- output
- unit
- 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
- H02P21/00—Arrangements or methods for the control of electric machines by vector control, e.g. by control of field orientation
- H02P21/06—Rotor flux based control involving the use of rotor position or rotor speed sensors
- H02P21/10—Direct field-oriented control; Rotor flux feed-back control
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Control Of Ac Motors In General (AREA)
- Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)
Abstract
1290962 Automatic speed and current control SIEMENS A G 13 Aug 1970 [14 Aug 1969 22 April 1970] 39150/70 Heading G3R [Also in Division H2] An asynchronous motor 1 is supplied from a frequency changer 2, current transformers being connected to a unit 8 for providing quadrature signals Ij, Ir, which are applied to controllers 9. The output voltages of these controllers are converted in unit 10 into corresponding three-phase components for controlling the frequency changer 2. The signals Ij, Ir, are transmitted through proportional-action members 4a and are subtracted in unit 4b from the output voltages of detectors 3 which respond to the air-gap field. The factor of the members 4a depends on the ratio between rotor stray inductance and the main inductance of the motor. A vector analyzer 5 receives signals related to the rotating field and provides sine and cosine components of a unit vector which always points in the direction of the axis of the field. The unit 6 receives signals b, w, related to the rotor field axis, and the sine and cosine field components, to provide at its output the reference signals for the controllers 9. This arrangement provides separate torque and field regulation by adjusting the signals b and w individually. The signal w may be derived from a controller 110 which compares the desired and actual speed for superimposing speed-regulation upon the torque regulation. In a modification, the signals b, w, are derived from direct current controllers having integralproportional action, Fig.4 (not shown). To overcome delay effects, the control vector formed by the output voltages of these controllers is added to a vector perpendicular thereto so that the sum vector is advanced in the direction of rotation of the field. The magnitude of the added vector is proportional to the angular velocity, the stator current, and the stray-field time constant of the motor. The main-field time constant is compensated for by rotation of the vector opposite to the direction of the field. In another arrangement, the motor is supplied from a rectifier-frequency converter combination, 2a, 2b, associated with a current controller 64. A signal representing the magnitude of the control vector for the stator current appears at the output terminal 37 of the vector analyzer 51, while sine and cosine signals, representing the angular position of the vector, appear at terminals 13, 14. Signals representing six discrete angular positions are produced in switch 65 which transmits firing pulses to the rectifiers of the inverter 2b whereby the stator current vector follow the control vector. A phase correcting controller 74 is associated with the switch 65. The inverter comprises six controlled rectifiers in a three-phase bridge arrangement, and six commutating rectifiers connected in parallel therewith through capacitors forming oscillation circuits with the stator phase windings. Smoothing of the field-component voltages at the output of the units 4b, to remove harmonics due to slotting of the rotor, is provided by a harmonic-free two-phase generator 114 whose frequency is determined by the output of a proportional-plus-integral controller 115 to the input of which is applied a signal representing the phase displacement between vectors related to the rotating field and the generator respectively. The sine and cosine voltages set up at terminals 110, 111, and the component voltages to be smoothed are multiplied in unit 116. A divider 119 provides a signal proportional to the tangent of the difference angle. A second order delay member comprises an integrator 122 associated with amplifier 121. The smoothed output is developed at terminals 126, 127, associated with multipliers 124, 125.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19691941312 DE1941312B2 (en) | 1969-08-14 | 1969-08-14 | METHOD AND EQUIPMENT FOR THE CONTROL OF ASYNCHRONOUS MACHINES |
DE19702019263 DE2019263C3 (en) | 1970-04-22 | 1970-04-22 | Device for in-phase smoothing of the component voltages of a voltage vector affected by harmonics |
Publications (1)
Publication Number | Publication Date |
---|---|
GB1290962A true GB1290962A (en) | 1972-09-27 |
Family
ID=25757791
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB1290962D Expired GB1290962A (en) | 1969-08-14 | 1970-08-13 |
Country Status (17)
Country | Link |
---|---|
AT (1) | AT301700B (en) |
BE (1) | BE754739A (en) |
CA (1) | CA991699A (en) |
CH (1) | CH543190A (en) |
CS (1) | CS152368B2 (en) |
DK (1) | DK147745C (en) |
EG (1) | EG9829A (en) |
ES (1) | ES382708A1 (en) |
FR (1) | FR2060101B1 (en) |
GB (1) | GB1290962A (en) |
HU (1) | HU167668B (en) |
LU (1) | LU61509A1 (en) |
NL (1) | NL171949C (en) |
NO (1) | NO132257C (en) |
RO (1) | RO64136A (en) |
SE (1) | SE385070B (en) |
SU (1) | SU548220A3 (en) |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
YU115577A (en) * | 1977-05-06 | 1982-10-31 | Energoinvest Oour Inst | Device for controllig asynchronous motors fed with a frequency transverter |
SU864476A1 (en) * | 1979-03-15 | 1981-09-15 | Предприятие П/Я М-5774 | Electric drive |
SU942230A1 (en) * | 1979-03-15 | 1982-07-07 | Предприятие П/Я М-5774 | Electric drive |
ATE29354T1 (en) * | 1983-03-18 | 1987-09-15 | Acec | METHOD OF CONTROLLING THE RUN OF AN ELECTRICAL MACHINE AND DEVICE FOR APPLYING THESE METHOD. |
CN113872488B (en) * | 2021-11-08 | 2023-07-21 | 北京航空航天大学 | Control method and device for composite quasi-proportional resonant current controller |
-
0
- BE BE754739D patent/BE754739A/en not_active IP Right Cessation
-
1970
- 1970-07-22 CH CH1109370A patent/CH543190A/en not_active IP Right Cessation
- 1970-07-30 CS CS537170A patent/CS152368B2/cs unknown
- 1970-08-05 AT AT711270A patent/AT301700B/en not_active IP Right Cessation
- 1970-08-11 NO NO307770A patent/NO132257C/no unknown
- 1970-08-11 EG EG35970A patent/EG9829A/en active
- 1970-08-12 RO RO6420870A patent/RO64136A/en unknown
- 1970-08-12 LU LU61509D patent/LU61509A1/xx unknown
- 1970-08-13 DK DK415670A patent/DK147745C/en not_active IP Right Cessation
- 1970-08-13 ES ES382708A patent/ES382708A1/en not_active Expired
- 1970-08-13 GB GB1290962D patent/GB1290962A/en not_active Expired
- 1970-08-14 NL NL7012044A patent/NL171949C/en not_active IP Right Cessation
- 1970-08-14 FR FR7029978A patent/FR2060101B1/fr not_active Expired
- 1970-08-14 CA CA090,797A patent/CA991699A/en not_active Expired
- 1970-08-14 SE SE1112070A patent/SE385070B/en unknown
- 1970-08-14 HU HUSI001179 patent/HU167668B/hu unknown
-
1971
- 1971-01-27 SU SU1619609A patent/SU548220A3/en active
Also Published As
Publication number | Publication date |
---|---|
HU167668B (en) | 1975-11-28 |
NL171949B (en) | 1983-01-03 |
SU548220A3 (en) | 1977-02-25 |
EG9829A (en) | 1976-05-31 |
LU61509A1 (en) | 1970-10-22 |
FR2060101A1 (en) | 1971-06-11 |
SE385070B (en) | 1976-05-31 |
NL7012044A (en) | 1971-02-16 |
CA991699A (en) | 1976-06-22 |
RO64136A (en) | 1979-05-15 |
DK147745B (en) | 1984-11-26 |
BE754739A (en) | 1971-02-12 |
CS152368B2 (en) | 1973-12-19 |
FR2060101B1 (en) | 1973-01-12 |
NL171949C (en) | 1983-06-01 |
AT301700B (en) | 1972-09-11 |
NO132257C (en) | 1975-10-08 |
ES382708A1 (en) | 1973-04-16 |
CH543190A (en) | 1973-10-15 |
NO132257B (en) | 1975-06-30 |
DK147745C (en) | 1985-05-20 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PS | Patent sealed | ||
PCNP | Patent ceased through non-payment of renewal fee |