GB1095769A - Electric motor drive with dynamic and static braking - Google Patents
Electric motor drive with dynamic and static brakingInfo
- Publication number
- GB1095769A GB1095769A GB52399/65A GB5239965A GB1095769A GB 1095769 A GB1095769 A GB 1095769A GB 52399/65 A GB52399/65 A GB 52399/65A GB 5239965 A GB5239965 A GB 5239965A GB 1095769 A GB1095769 A GB 1095769A
- Authority
- GB
- United Kingdom
- Prior art keywords
- scr1
- braking
- stator
- rectifier
- rectifiers
- 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
- H02P23/10—Controlling by adding a dc current
-
- 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
- H02P23/24—Controlling the direction, e.g. clockwise or counterclockwise
-
- 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
- H02P27/02—Arrangements or methods for the control of AC motors characterised by the kind of supply voltage using supply voltage with constant frequency and variable amplitude
-
- 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
- H02P3/00—Arrangements for stopping or slowing electric motors, generators, or dynamo-electric converters
- H02P3/06—Arrangements for stopping or slowing electric motors, generators, or dynamo-electric converters for stopping or slowing an individual dynamo-electric motor or dynamo-electric converter
- H02P3/18—Arrangements for stopping or slowing electric motors, generators, or dynamo-electric converters for stopping or slowing an individual dynamo-electric motor or dynamo-electric converter for stopping or slowing an ac motor
- H02P3/24—Arrangements for stopping or slowing electric motors, generators, or dynamo-electric converters for stopping or slowing an individual dynamo-electric motor or dynamo-electric converter for stopping or slowing an ac motor by applying dc to the motor
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)
- Control Of Multiple Motors (AREA)
- Stopping Of Electric Motors (AREA)
Abstract
1,095,769. Control of A.C. motors. COMBUSTION ENGINEERING Inc. Dec. 9, 1965 [Dec. 28, 1964],(2)] No. 52399/65. Heading H2J. An induction motor 10 is adapted for static and dynamic braking by supplying both its stator and rotor windings with direct-current when the driving potential is interrupted. The braking current is supplied through transformer T9 and diodes D14, D15, to stator coils 12, 14, in parallel and then stator coil 16 in series. The braking current then passes through rotor coil 44 in series with the parallel-connection of rotor coils 42, 40, a silicon controlled rectifier SCR2 being included in the braking circuit. This rectifier is only gated through Zener diode D16 when all four transformer secondary windings T1-S2 . . . T4-S2 are energized, the primary windings T1-P . . . T4-P being energized together when the stator windings are disconnected from supply-lines L2, L3. Threephase power is applied to the motor through four similar networks 22, 24, 26, 28, each comprising a silicon controlled rectifier in a diode bridge circuit, pairs of the networks being rendered effective alternately for reversing the motor. When the silicon controlled rectifiers of one pair of networks are gated, the gating of the other rectifiers is prevented. The gating circuit for the rectifier SCR1-A, for example, comprises transformer secondary winding T5-S whose primary winding is supplied from a transformer having primary winding T2-P. The latter is energized only when rectifier SCR1-B is non-conductive. Thus, it is not possible to gate rectifiers SCR1- A, SCR1-B, simultaneously. Rectifiers SCR1-C, SCR1-D, are interlocked in a similar manner. The braking circuit comprises several eddy-current loops, both on the stator and rotor sides, diodes D12, D13, limiting the braking current in the primary circuit at high speeds but providing a low-resistance path when the speed approaches zero. The secondary loops comprise resistors R3, R4, R5.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US421272A US3309593A (en) | 1964-12-28 | 1964-12-28 | Reversing line starter |
| US421271A US3353077A (en) | 1964-12-28 | 1964-12-28 | Electrical motor drive with dynamic and static braking |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1095769A true GB1095769A (en) | 1967-12-20 |
Family
ID=27025175
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB52399/65A Expired GB1095769A (en) | 1964-12-28 | 1965-12-09 | Electric motor drive with dynamic and static braking |
Country Status (4)
| Country | Link |
|---|---|
| DE (1) | DE1293326B (en) |
| FR (1) | FR1461188A (en) |
| GB (1) | GB1095769A (en) |
| NL (1) | NL6516823A (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3828153A1 (en) * | 1988-08-19 | 1990-02-22 | Zinser Textilmaschinen Gmbh | Process and apparatus for the doffing of a textile machine |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE702000C (en) * | 1935-09-22 | 1941-01-28 | Siemens Schuckertwerke Akt Ges | Method for stopping propellers of electrically powered ships |
| DE714860C (en) * | 1939-10-28 | 1941-12-08 | Carl Flohr G M B H | Circuit for DC braking of two three-phase motors |
| DE1144831B (en) * | 1957-01-18 | 1963-03-07 | Hanning Robert | Asynchronous motor with electric DC braking |
| DE1142651B (en) * | 1957-09-28 | 1963-01-24 | Siemens Ag | Arrangement for controlling the speed and direction of rotation of an asynchronous motor by means of controllable semiconductors |
-
1965
- 1965-12-09 GB GB52399/65A patent/GB1095769A/en not_active Expired
- 1965-12-22 FR FR43393A patent/FR1461188A/en not_active Expired
- 1965-12-23 DE DEC37760A patent/DE1293326B/en active Pending
- 1965-12-23 NL NL6516823A patent/NL6516823A/xx unknown
Also Published As
| Publication number | Publication date |
|---|---|
| DE1293326B (en) | 1969-04-24 |
| FR1461188A (en) | 1966-12-02 |
| NL6516823A (en) | 1966-06-29 |
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