SU89488A1 - A device for converting three-phase current into single-phase current and back - Google Patents
A device for converting three-phase current into single-phase current and backInfo
- Publication number
- SU89488A1 SU89488A1 SU406707A SU406707A SU89488A1 SU 89488 A1 SU89488 A1 SU 89488A1 SU 406707 A SU406707 A SU 406707A SU 406707 A SU406707 A SU 406707A SU 89488 A1 SU89488 A1 SU 89488A1
- Authority
- SU
- USSR - Soviet Union
- Prior art keywords
- phase
- rotor
- phase current
- network
- converting
- Prior art date
Links
Description
Предлагаемое устройство дл преобразовави трехфазного тока в однофазный и обратно и предназначено дл применени в маломощных установках и представл ет собой трехфазную машину с затормо женны1М двухфазным ротором, обмотки статора которой включены в трехфазную сеть, а одна фаза ротора в однофазную сеть.The proposed device for converting three-phase current to single-phase and vice versa is intended for use in low-power installations and is a three-phase machine with braked 1M two-phase rotor, the stator windings of which are included in the three-phase network, and one phase of the rotor into a single-phase network.
Основными недостатками известных подобных устройств вл ютс невозможность образовани роторными обмотками вращающегос пол при однофазном питании ротора и значительна несимметри токов| в трехфазной сети при однофазной нагрузке во вторичной системе.The main disadvantages of the known similar devices are the impossibility of the formation of a rotary field by rotor windings with a single-phase supply of the rotor and a significant asymmetry of the currents | in a three-phase network with a single-phase load in the secondary system.
В предлагаемом устройстве эти недостатки устранены выполнением второй фазы ротора с частичной магнитной св зью с первой фазой и включением ее на активное сопротивление, соединенное последовательно с индуктивностью или с конденсатором.In the proposed device, these disadvantages are eliminated by performing the second phase of the rotor with partial magnetic coupling to the first phase and switching it on to active resistance connected in series with the inductance or with a capacitor.
На чертеже приведена принципиальна электрическа схема предлагаемого устройства.The drawing shows the principal electrical circuit of the proposed device.
Устройство состоит из заторможенного трехфазного асинхронного двигател с фазным ротором, Имеющим двухфазную систему обмоток, частично магнитно-св занных между собой. Перва фаза 1 ротора, соединенна последовательно с половиной 2 второй фазы, приключена в однофазной сети. Друга половина 3 второй фазы включена на активное сопротивление 4, соединенное последовательно с индуктивностью 5 или конденсатором. Статор 6 машины включен в трехфазную сеть.The device consists of a braked three-phase asynchronous motor with a phase-wound rotor, which has a two-phase system of windings, partially magnetically coupled to each other. The first phase 1 of the rotor, connected in series with half of the second two phases, is adventured in a single-phase network. The other half of the second phase is connected to active resistance 4, connected in series with inductance 5 or a capacitor. The stator 6 of the machine is included in the three-phase network.
Предлагаемое устройство преобразует пульсирующее поле однофазного тока в эллиптическое вращающеес поле, т. е. однофазный ток в не полностью симметричный трехфазный ток. Несимметри трехфазного тока уменьшаетс при относительном возрастании активного сопротивлени по сравнению с реактивным.The proposed device converts a pulsating field of a single-phase current into an elliptical rotating field, i.e. a single-phase current into an incompletely symmetrical three-phase current. The asymmetry of the three-phase current decreases with a relative increase in the active resistance compared to the reactive one.
№ 89488- 2 -No. 89488-2 -
Преимуществом предлагаемого устройства вл етс его простота и возможность использовани простой асинхронной машины с кольцами дл целей преобразовани .The advantage of the proposed device is its simplicity and the possibility of using a simple asynchronous machine with rings for conversion purposes.
Предмет изобретени Subject invention
Claims (2)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SU406707A SU89488A1 (en) | 1949-11-04 | 1949-11-04 | A device for converting three-phase current into single-phase current and back |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SU406707A SU89488A1 (en) | 1949-11-04 | 1949-11-04 | A device for converting three-phase current into single-phase current and back |
Publications (1)
Publication Number | Publication Date |
---|---|
SU89488A1 true SU89488A1 (en) | 1949-11-30 |
Family
ID=48260713
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
SU406707A SU89488A1 (en) | 1949-11-04 | 1949-11-04 | A device for converting three-phase current into single-phase current and back |
Country Status (1)
Country | Link |
---|---|
SU (1) | SU89488A1 (en) |
-
1949
- 1949-11-04 SU SU406707A patent/SU89488A1/en active
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