FI891083A0 - DRIFTFOERFARANDE OCH STYRKRETS FOER OEVERVAKNING AV STARTNINGEN AV ASYNKRONT STARTADE HOEGSPAENNINGSELEKTROMOTORER. - Google Patents
DRIFTFOERFARANDE OCH STYRKRETS FOER OEVERVAKNING AV STARTNINGEN AV ASYNKRONT STARTADE HOEGSPAENNINGSELEKTROMOTORER.Info
- Publication number
- FI891083A0 FI891083A0 FI891083A FI891083A FI891083A0 FI 891083 A0 FI891083 A0 FI 891083A0 FI 891083 A FI891083 A FI 891083A FI 891083 A FI891083 A FI 891083A FI 891083 A0 FI891083 A0 FI 891083A0
- Authority
- FI
- Finland
- Prior art keywords
- heating
- starting
- voltage
- rotor
- motors
- Prior art date
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
- H02P1/00—Arrangements for starting electric motors or dynamo-electric converters
- H02P1/16—Arrangements for starting electric motors or dynamo-electric converters for starting dynamo-electric motors or dynamo-electric converters
- H02P1/46—Arrangements for starting electric motors or dynamo-electric converters for starting dynamo-electric motors or dynamo-electric converters for starting an individual synchronous motor
- H02P1/50—Arrangements for starting electric motors or dynamo-electric converters for starting dynamo-electric motors or dynamo-electric converters for starting an individual synchronous motor by changing over from asynchronous to synchronous operation
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H6/00—Emergency protective circuit arrangements responsive to undesired changes from normal non-electric working conditions using simulators of the apparatus being protected, e.g. using thermal images
- H02H6/005—Emergency protective circuit arrangements responsive to undesired changes from normal non-electric working conditions using simulators of the apparatus being protected, e.g. using thermal images using digital thermal images
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H7/00—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions
- H02H7/08—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for dynamo-electric motors
- H02H7/0816—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for dynamo-electric motors concerning the starting sequence, e.g. limiting the number of starts per time unit, monitoring speed during starting
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Control Of Ac Motors In General (AREA)
- Motor And Converter Starters (AREA)
- Peptides Or Proteins (AREA)
- Measuring Or Testing Involving Enzymes Or Micro-Organisms (AREA)
- Medicines That Contain Protein Lipid Enzymes And Other Medicines (AREA)
- Protection Of Generators And Motors (AREA)
- Control Of Motors That Do Not Use Commutators (AREA)
- Control Of Electric Motors In General (AREA)
Abstract
A known operating method for the protection of electric motors against overload detects the rotor speed and the supplied power in order to derive an accumulated total value by comparison with stored motor heating values associated with the operating state data, which total value corresponds to the relative heating state of the motor. The new operating method and the control circuit are intended to ensure overload protection for large high-voltage motors where the starting losses are converted in the rotor, for the rotor parts which are affected during asynchronous starting and in the fixedly braked state, taking into account their heating and cooling characteristic, even in the case of these transient processes. In the case of the operating method and the control circuit for monitoring the rotor parts of the high-voltage motor 30 which are affected during starting, the type and duration of the respective operating states (including transient operating states), stator current I1 and speed n are determined and compared with operating state matrices 39, 40. Using a theoretical heating model, the time- dependent dynamic heating characteristic of the rotor parts affected during the starting is represented from said model by means of a heating state matrix 41 by displaying discrete values, by means of which the possible starts are monitored and protective devices 46, 47 are controlled. Brushless high-voltage asynchronous motors, or high-voltage synchronous motors, of high power with asynchronous starting. <IMAGE>
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE3808028A DE3808028A1 (en) | 1988-03-08 | 1988-03-08 | OPERATING METHOD AND CONTROL CIRCUIT FOR START-UP MONITORING FOR ELECTRIC HIGH-VOLTAGE MOTORS WITH ASYNCHRONOUS START-UP |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| FI891083A0 true FI891083A0 (en) | 1989-03-07 |
| FI891083A FI891083A (en) | 1989-09-09 |
Family
ID=6349409
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| FI891083A FI891083A (en) | 1988-03-08 | 1989-03-07 | DRIFTFOERFARANDE OCH STYRKRETS FOER OEVERVAKNING AV STARTNINGEN AV ASYNKRONT STARTADE HOEGSPAENNINGSELEKTROMOTORER. |
Country Status (6)
| Country | Link |
|---|---|
| EP (1) | EP0332568B1 (en) |
| JP (1) | JPH01268474A (en) |
| AT (1) | ATE84386T1 (en) |
| CA (1) | CA1310688C (en) |
| DE (2) | DE3808028A1 (en) |
| FI (1) | FI891083A (en) |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63204307A (en) * | 1987-02-19 | 1988-08-24 | Fanuc Ltd | Overcurrent detector |
| DE4216040A1 (en) * | 1992-05-15 | 1993-11-18 | Bosch Gmbh Robert | Method for monitoring an electric motor for thermal overload |
| DE19743046C1 (en) * | 1997-09-29 | 1999-04-29 | Siemens Ag | Method and device for detecting the operating temperature of engines |
| CN102280859A (en) * | 2011-08-11 | 2011-12-14 | 山西惠特科技有限公司 | Soft start tensioning device with power-off time delay function |
| JP5628994B2 (en) * | 2013-01-21 | 2014-11-19 | ファナック株式会社 | Machine tool control device having time estimation means for estimating time until motor reaches overheat temperature |
| WO2015139713A1 (en) * | 2014-03-20 | 2015-09-24 | Diehl Ako Stiftung & Co. Kg | Method for operating a motor |
| DE102016215440A1 (en) * | 2016-08-18 | 2018-02-22 | Siemens Aktiengesellschaft | Method and device for online tracking of the thermal load of an electric motor |
| DE102018213060A1 (en) * | 2018-08-03 | 2020-02-06 | Siemens Aktiengesellschaft | Circuit breaker device for an electrical machine and use of such a circuit breaker device |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2549850C3 (en) * | 1975-11-06 | 1980-07-24 | Siemens Ag, 1000 Berlin Und 8000 Muenchen | Thermal overload protection device for an electrical machine |
| JPS54132746A (en) * | 1978-04-06 | 1979-10-16 | Toshiba Corp | Protective equipment for motor |
| ATE12862T1 (en) * | 1980-01-28 | 1985-05-15 | Black & Decker Inc | METHOD AND CONTROL FOR TEMPERATURE MONITORING OF AN ELECTRIC MOTOR. |
| CA1193317A (en) * | 1982-05-07 | 1985-09-10 | Canadian General Electric Company Limited | Thermal model for electrical apparatus |
| DE3237802A1 (en) * | 1982-10-12 | 1984-04-12 | Siemens AG, 1000 Berlin und 8000 München | OVERLOAD PROTECTION FOR AN ELECTRICAL MACHINE WITH SHORT-TERM RUNNING AGAINST FREQUENT STARTING |
| US4550277A (en) * | 1984-09-24 | 1985-10-29 | Black & Decker Inc. | Overload detection and warning system for electric motors in power tools and the like |
| JPS6198168A (en) * | 1984-10-18 | 1986-05-16 | Ishikawajima Harima Heavy Ind Co Ltd | Controller of motor |
-
1988
- 1988-03-08 DE DE3808028A patent/DE3808028A1/en not_active Withdrawn
-
1989
- 1989-03-01 AT AT89730053T patent/ATE84386T1/en active
- 1989-03-01 DE DE8989730053T patent/DE58903194D1/en not_active Expired - Fee Related
- 1989-03-01 EP EP89730053A patent/EP0332568B1/en not_active Expired - Lifetime
- 1989-03-06 CA CA000592872A patent/CA1310688C/en not_active Expired - Fee Related
- 1989-03-06 JP JP1053588A patent/JPH01268474A/en active Pending
- 1989-03-07 FI FI891083A patent/FI891083A/en not_active IP Right Cessation
Also Published As
| Publication number | Publication date |
|---|---|
| FI891083A (en) | 1989-09-09 |
| CA1310688C (en) | 1992-11-24 |
| ATE84386T1 (en) | 1993-01-15 |
| EP0332568A1 (en) | 1989-09-13 |
| DE3808028A1 (en) | 1989-09-21 |
| JPH01268474A (en) | 1989-10-26 |
| EP0332568B1 (en) | 1993-01-07 |
| DE58903194D1 (en) | 1993-02-18 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| FD | Application lapsed | ||
| MM | Patent lapsed |
Owner name: SIEMENS AKTIENGESELLSCHAFT |