SU577633A1 - Contactless discharging device for excitation system of synchronous motors - Google Patents
Contactless discharging device for excitation system of synchronous motorsInfo
- Publication number
- SU577633A1 SU577633A1 SU7301889993A SU1889993A SU577633A1 SU 577633 A1 SU577633 A1 SU 577633A1 SU 7301889993 A SU7301889993 A SU 7301889993A SU 1889993 A SU1889993 A SU 1889993A SU 577633 A1 SU577633 A1 SU 577633A1
- Authority
- SU
- USSR - Soviet Union
- Prior art keywords
- synchronous motors
- discharging device
- excitation system
- contactless
- thyristor
- Prior art date
Links
Landscapes
- Control Of Eletrric Generators (AREA)
Description
1one
Изобретение относитс к электрическим машин 1М и может быть использовано в системах тиристорного возбуждени синхронных машин, anpKtJiep, синхронных двигателей.The invention relates to electric machines 1M and can be used in thyristor excitation systems of synchronous machines, anpKtJiep, synchronous motors.
.При асинхронном пуске синхронных двигателей в обмотке возбуждени на водитс ЭДС значительной величины, частота которой измен етс по величине 6т частоты сети при пуске и до нул при вхождении машины в синхронизм. Если не примен ть специальных мер дл защиты обмотки возбуждени машины и тиристорного преобразовател , то наводима в обмотке возбуждени ЭДС может вызвать пробой тиристоров ..или наРУше ние изол ции. Дл исключени перенапр жений на тиристорном преобразователе и обмотке возбуждени в процессе пуска и возможных ресинхронизаци х последние шунтируютс разр дными резисторами . По окончании пуска разр дные резисторы вывод тс из работы..In asynchronous start-up of synchronous motors, in the excitation winding, an emf of significant magnitude is driven, the frequency of which varies in magnitude 6t of the mains frequency during start-up and reaches zero when the machine is in sync. If you do not use special measures to protect the excitation winding of the machine and the thyristor converter, then induced in the excitation winding of the EMF can cause the breakdown of the thyristors ... or the destruction of the insulation. To eliminate overvoltages on the thyristor converter and the excitation winding during the start-up process and possible resynchronisations, the latter are shunted by discharge resistors. At the end of the start-up, the discharge resistors are removed from operation.
Известно бесконтактное разр дное устросйство в системах возбуждени синхронных двигателей, содержащее бесконтактный ключ, состо щий из встречно-параллельно вклнзченных тиристоров 1. Ключ подключен парал ельно обмотке возбуждени синхронного двигател A contactless discharge device in the excitation systems of synchronous motors is known, which contains a contactless switch consisting of counter-parallel-switched thyristors 1. The switch is connected in parallel to the excitation winding of the synchronous motor.
через разр дный резистор. Управл ющие электроды тиристоров через резисторы и стабилитроны подключаютс на напр жение выхода тиристорного возбудител синхронного двигател .through the discharge resistor. The thyristor control electrodes are connected through resistors and zener diodes to the output voltage of the thyristor exciter of the synchronous motor.
Разр дный контур примен етс дл синхронных двигателей с малыми пусковыми токами. Из-за ограничений по току тиристоров он не может примен тьс дл мощных синхронных двигателей и компенсаторов .The discharge circuit is used for synchronous motors with low starting currents. Due to thyristor current limitations, it cannot be used for high-power synchronous motors and compensators.
Известна также схема бесконтактного разр дного контура,содержаща ключ, состо щий из встречно-параллельно, включенных тиристора и диода 2. Это устройство не обеспечивает.управл емого режима гашени пол и поэтому не нашло широкого применени в промышленных установках .A contactless discharge circuit is also known, which contains a key consisting of anti-parallel, connected thyristor and diode 2. This device does not provide a controlled floor-quenching mode and therefore has not found wide application in industrial installations.
Claims (2)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SU7301889993A SU577633A1 (en) | 1973-03-09 | 1973-03-09 | Contactless discharging device for excitation system of synchronous motors |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SU7301889993A SU577633A1 (en) | 1973-03-09 | 1973-03-09 | Contactless discharging device for excitation system of synchronous motors |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| SU577633A1 true SU577633A1 (en) | 1977-10-25 |
Family
ID=20544461
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| SU7301889993A SU577633A1 (en) | 1973-03-09 | 1973-03-09 | Contactless discharging device for excitation system of synchronous motors |
Country Status (1)
| Country | Link |
|---|---|
| SU (1) | SU577633A1 (en) |
-
1973
- 1973-03-09 SU SU7301889993A patent/SU577633A1/en active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US3307093A (en) | Induction motors and starting arrangements therefor | |
| SU1109077A3 (en) | Direct current electric drive | |
| SU577633A1 (en) | Contactless discharging device for excitation system of synchronous motors | |
| SE7714537L (en) | AC POWER DEVICE | |
| US3509439A (en) | Exciter arrangement for synchronous motors | |
| US3668489A (en) | Frequency doubler motor drive and motor | |
| ES426704A1 (en) | Braking circuit for alternating current induction motor | |
| GB954411A (en) | Field circuit control for a.c. generators | |
| JPS5666189A (en) | Overvoltage protector for electric motor variable speed operating inverters | |
| ATE112902T1 (en) | DEVICE FOR LIMITING THE TERMINAL VOLTAGE OF AN ALTERNATOR. | |
| US3541412A (en) | Control for alternating-current motors | |
| US3381192A (en) | Motor control circuitry responsive to a rotor position sensing arrangement | |
| SU534010A1 (en) | Surge protection device on the excitation winding of a synchronous machine with a brushless excitation system | |
| GB1076228A (en) | Arrangement for the operation of a slip-ring induction motor | |
| CA1124781A (en) | Control circuit for discharging the field winding of a synchronous motor | |
| GB1292119A (en) | Improvements in systems for controlling the direct current in the windings of an electrical machine | |
| ES416357A1 (en) | Improvements in alternate current generators. (Machine-translation by Google Translate, not legally binding) | |
| SU1046890A1 (en) | A.c. electric drive | |
| SU700906A1 (en) | Device for excitation of synchronous motor | |
| SU1576370A1 (en) | Apparatus for regulating vehicle speed | |
| SU669461A1 (en) | Device for exciting synchronous motor | |
| SU1697245A1 (en) | Electric drive | |
| SU150164A1 (en) | Device for electrodynamic braking | |
| SU140885A1 (en) | Adjustable electric drive with brushless AC motors | |
| SU680114A1 (en) | Device for reliability test of asynchronous motors |