SU482853A1 - Device for dynamic braking of a two-motor asynchronous electric drive - Google Patents
Device for dynamic braking of a two-motor asynchronous electric driveInfo
- Publication number
- SU482853A1 SU482853A1 SU1817071A SU1817071A SU482853A1 SU 482853 A1 SU482853 A1 SU 482853A1 SU 1817071 A SU1817071 A SU 1817071A SU 1817071 A SU1817071 A SU 1817071A SU 482853 A1 SU482853 A1 SU 482853A1
- Authority
- SU
- USSR - Soviet Union
- Prior art keywords
- electric drive
- dynamic braking
- asynchronous electric
- motor
- stator windings
- Prior art date
Links
Landscapes
- Control Of Multiple Motors (AREA)
Description
13, 16 и 17, а замыкающими контактами 8 подключаютс к статорным обмоткам 2-7 источник посто нного тока 1 (в обмотки статора подаетс ток независимого возбуждени ). Замыкающими контактами 12 к статорным обмоткам 2-5 подключаютс выпр мительные мосты 9 (в обмотки статора подаетс ток обратной св зи). Происходит замедление двигателей . По истечении заданной выдержки времени размыкаютс контакты 8 и 12. Необходимое значение тормозного момента получаетс за счет изменени величины роторных сопротивлений 14 и 15 и количества контактов 16. Выпр мительные мосты 9 могут быть однофазными или трехфазными. Предмет изобретени Устройство дл динамического торможени двухдвигательного асинхронного электропривода , содержащее источник посто нного тока, подключенный к статорным обмоткам двух фаз первого двигател , выпр мительные мосты , подключенные входами к роторам двигателей , а выходами к третьим фазным статорным обмоткам обоих двигателей, причем статорные обмотки второго двигател соединены в звезду и коммутационные элементы, подключающие выпр митель и упом нутый источник к обмоткам двигателей, отличающеес тем, что, с целью исключени колебаний и получени синхронного снижени скорости вращени двигателей в процессе торможени , статорные обмотки одноименных фаз соединены через коммутационные элементы последовательно, причем последовательные цепи двух статорных обмоток вторых и третьих фаз соединены параллельно, а их обща точка в первом двигателе соединена с первой фазной обмоткой через коммутационный элемент.13, 16 and 17, and the closing contacts 8 are connected to the stator windings 2-7 of the direct current source 1 (an independent excitation current is supplied to the stator windings). The closing contacts 12 to the stator windings 2-5 connect rectifying bridges 9 (a feedback current is fed to the stator windings). Engine deceleration occurs. After a predetermined time delay, contacts 8 and 12 open. The required braking torque is obtained by changing the magnitude of the rotor resistances 14 and 15 and the number of contacts 16. The rectifying bridges 9 can be single-phase or three-phase. The subject of the invention is a device for dynamic braking of a two-motor asynchronous electric drive containing a DC source connected to the stator windings of the two phases of the first motor, rectifying bridges connected by inputs to the rotors of the engines, and the outputs to the third phase stator windings of both motors, and the stator windings of the second motor connected to a star and switching elements connecting the rectifier and the said source to the motor windings, characterized in that, in order to exclude oscillations and obtaining a synchronous reduction of the rotational speed of the motors during braking, the stator windings of the same phases are connected through switching elements in series, and the successive circuits of the two stator windings of the second and third phases are connected in parallel, and their common point in the first motor is connected to the first element.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SU1817071A SU482853A1 (en) | 1972-08-04 | 1972-08-04 | Device for dynamic braking of a two-motor asynchronous electric drive |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SU1817071A SU482853A1 (en) | 1972-08-04 | 1972-08-04 | Device for dynamic braking of a two-motor asynchronous electric drive |
Publications (1)
Publication Number | Publication Date |
---|---|
SU482853A1 true SU482853A1 (en) | 1975-08-30 |
Family
ID=20523848
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
SU1817071A SU482853A1 (en) | 1972-08-04 | 1972-08-04 | Device for dynamic braking of a two-motor asynchronous electric drive |
Country Status (1)
Country | Link |
---|---|
SU (1) | SU482853A1 (en) |
-
1972
- 1972-08-04 SU SU1817071A patent/SU482853A1/en active
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