SU152012A1 - The method of starting a three-phase asynchronous motor - Google Patents

The method of starting a three-phase asynchronous motor

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Publication number
SU152012A1
SU152012A1 SU752954A SU752954A SU152012A1 SU 152012 A1 SU152012 A1 SU 152012A1 SU 752954 A SU752954 A SU 752954A SU 752954 A SU752954 A SU 752954A SU 152012 A1 SU152012 A1 SU 152012A1
Authority
SU
USSR - Soviet Union
Prior art keywords
starting
asynchronous motor
phase
phase asynchronous
windings
Prior art date
Application number
SU752954A
Other languages
Russian (ru)
Inventor
Г.И. Шарохин
А.Я. Шихин
Original Assignee
Г.И. Шарохин
А.Я. Шихин
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Г.И. Шарохин, А.Я. Шихин filed Critical Г.И. Шарохин
Priority to SU752954A priority Critical patent/SU152012A1/en
Application granted granted Critical
Publication of SU152012A1 publication Critical patent/SU152012A1/en

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Description

Предметом изобретени   вл етс  способ пуска трехфазного асин-хронного двигател , согласно .которому, с целью получени  дополнительной пусковой ступени, одну из фазных обмоток машины полностью отключают от сети, а концы другой переключают дл  изменени  в ней направлени  тока. В этом случае при работе машины на двух фазах сохран етс  круговое вращающеес  поле и обеспечиваетс  получение вращающего момента, по величине промежуточного между моментами, получаемыми при соединении обмоток в звезду и в треугольник.The subject of the invention is a method for starting a three-phase asin-chronous motor, according to which, in order to obtain an additional starting stage, one of the phase windings of the machine is completely disconnected from the network, and the ends of the other are switched to change the current direction in it. In this case, when the machine operates on two phases, the circular rotary field is preserved and the torque is obtained, which is intermediate in magnitude between the moments obtained when the windings are connected into a star and a triangle.

На фиг. 1а-1б изображена электрическа  схема соединени  обмоток статора асинхронного двигател  в треугольник; на фиг. 2а-2б - схемы промежуточной ступени.FIG. Figures 1a-1b show an electrical circuit for connecting the stator windings of an asynchronous motor in a triangle; in fig. 2a-2b are intermediate stage diagrams.

Согласно фиг. 1 к фазным обмоткам двигател  подведено симметричное трехфазное напр жение от сети А, В, С, (соответственно обозначены начала фазных обмоток, а их концы через X, V, Z).According to FIG. 1, the phase windings of the motor are supplied with symmetrical three-phase voltage from the mains A, B, C, (respectively, the beginnings of the phase windings are indicated, and their ends are marked X, V, Z).

В случае отключени  какой-либо фазы (например. С) вращающеес  круговое поле уменьшаетс  в три раза и, кроме того, по вл етс  пульсирующее поле, в два раза превышающее круговое поле. Наличие пульсирующего пол  приводит к электрической разработке подшипников и создает гудение, в св зи с чем работа асинхронного двигател  по схеме открытого треугольника недопустима.In the event of the disconnection of any phase (e.g. C), the rotating circular field is reduced three times and, moreover, a pulsating field appears that is twice the circular field. The presence of a pulsating floor leads to electrical development of bearings and creates a buzz, therefore, the operation of an asynchronous motor according to the open triangle scheme is unacceptable.

При включении обмоток по предлагаемому способу (фиг. 2) машина работает на двух фазах с «перевернутой одной фазой в услови х создани  кругового вращающегос  пол , в Кз раза меньшего, чем при включении трех фаз.When the windings are turned on by the proposed method (Fig. 2), the machine operates on two phases with an inverted single phase under the conditions of creating a circular rotary floor, Kz times smaller than when the three phases are turned on.

№ 152012№ 152012

Предмет изобретени Subject invention

Способ пуска трехфазного асинхронного двигател , отличающийс  тем, что, с целью получени  дополнительной пусковой ступени , одну из его фазных обмоток полностью отключают от сети, а концы другой переключаютс  дл  изменени  в ней направлени  тока.The method of starting a three-phase asynchronous motor, characterized in that, in order to obtain an additional start-up stage, one of its phase windings is completely disconnected from the network, and the ends of the other switch to change the current direction in it.

- 2 - 2

. А В. A b

Фиг 1Fig 1

SU752954A 1961-11-18 1961-11-18 The method of starting a three-phase asynchronous motor SU152012A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
SU752954A SU152012A1 (en) 1961-11-18 1961-11-18 The method of starting a three-phase asynchronous motor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SU752954A SU152012A1 (en) 1961-11-18 1961-11-18 The method of starting a three-phase asynchronous motor

Publications (1)

Publication Number Publication Date
SU152012A1 true SU152012A1 (en) 1961-11-30

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
SU752954A SU152012A1 (en) 1961-11-18 1961-11-18 The method of starting a three-phase asynchronous motor

Country Status (1)

Country Link
SU (1) SU152012A1 (en)

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