GB1477674A - Motor control circuit - Google Patents
Motor control circuitInfo
- Publication number
- GB1477674A GB1477674A GB3638574A GB3638574A GB1477674A GB 1477674 A GB1477674 A GB 1477674A GB 3638574 A GB3638574 A GB 3638574A GB 3638574 A GB3638574 A GB 3638574A GB 1477674 A GB1477674 A GB 1477674A
- Authority
- GB
- United Kingdom
- Prior art keywords
- motor
- power
- circuit
- aug
- stator
- 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
- H02P25/02—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
- H02P25/06—Linear motors
- H02P25/062—Linear motors of the induction type
-
- 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
- H02P25/06—Linear motors
-
- 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
- H02P27/047—V/F converter, wherein the voltage is controlled proportionally with the frequency
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Control Of Vehicles With Linear Motors And Vehicles That Are Magnetically Levitated (AREA)
- Control Of Linear Motors (AREA)
- Linear Motors (AREA)
- Control Of Ac Motors In General (AREA)
Abstract
1477674 Automatic power control TRANSPORTATION TECHNOLOGY Inc 19 Aug 1974 [20 Aug 1973] 36385/74 Heading G3R A control signal for an A.C. motor supply circuit is produced in response to measured values of motor voltage and current which are used to calculate a value for the power input to the motor less the stator copper losses. As shown, a three-phase linear induction motor 10 is supplied over a controlled SCR bridge 14 in a variable voltage-variable frequency mode. An SCR firing'circuit 16 receives an input from a comparator 24 connected to a power feedback line 26 and a reference source 20. The reference power level may be set in dependence on the measured speed of the motor. Feedback line 26 includes an analog cirucit 22, Fig. 4 (not shown) comprising adding and multiplying circuits which are arranged to evaluate the motor power corrected for stator copper losses in accordance with an equivalent circuit, Fig. 3. Stator resistances R1-3 are simulated by elements in the analog circuit 22 while mechanical power generated by the motor is represented by a load 50.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US38976773A | 1973-08-20 | 1973-08-20 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1477674A true GB1477674A (en) | 1977-06-22 |
Family
ID=23539648
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB3638574A Expired GB1477674A (en) | 1973-08-20 | 1974-08-19 | Motor control circuit |
Country Status (7)
| Country | Link |
|---|---|
| JP (1) | JPS557074B2 (en) |
| AU (1) | AU7055974A (en) |
| CA (1) | CA1025935A (en) |
| DE (1) | DE2437716A1 (en) |
| FR (1) | FR2241909A1 (en) |
| GB (1) | GB1477674A (en) |
| ZA (1) | ZA743615B (en) |
-
1974
- 1974-05-31 CA CA201,427A patent/CA1025935A/en not_active Expired
- 1974-06-06 ZA ZA00743615A patent/ZA743615B/en unknown
- 1974-06-27 AU AU70559/74A patent/AU7055974A/en not_active Expired
- 1974-07-17 FR FR7424881A patent/FR2241909A1/fr not_active Withdrawn
- 1974-08-06 DE DE2437716A patent/DE2437716A1/en active Pending
- 1974-08-19 JP JP9489074A patent/JPS557074B2/ja not_active Expired
- 1974-08-19 GB GB3638574A patent/GB1477674A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| CA1025935A (en) | 1978-02-07 |
| ZA743615B (en) | 1975-05-28 |
| AU7055974A (en) | 1976-01-08 |
| JPS557074B2 (en) | 1980-02-21 |
| FR2241909A1 (en) | 1975-03-21 |
| DE2437716A1 (en) | 1975-03-06 |
| JPS5058514A (en) | 1975-05-21 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PS | Patent sealed [section 19, patents act 1949] | ||
| PCNP | Patent ceased through non-payment of renewal fee |