SU73582A1

SU73582A1 - Single Machine Asynchronous Frequency Converter

Info

Publication number: SU73582A1
Application number: SU377208A
Authority: SU
Inventors: А.Д. Имас
Original assignee: А.Д. Имас
Priority date: 1948-03-31
Filing date: 1948-03-31
Publication date: 1948-11-30

Description

Изобретение относитс к одномашинным асинхронным преобразовател 1м частоты с двум обмотками на статоре и двум обмотками на роторе, с различным шагом одной и другой пары обмоток.The invention relates to a single-machine asynchronous 1m frequency converter with two windings on the stator and two windings on the rotor, with different pitch of one and the other pair of windings.

Согласно изобретению, предлагаетс , чтобы отношение шагов первой и второй пар обмоток выражалось целым и четным числом.According to the invention, it is proposed that the ratio of the steps of the first and second pairs of windings be expressed as an integer and even number.

При указанном соотношении шагов обе пары обмоток не имеют между собой трансформаторной св зи и образуют благодар этому две независимые электромагнитные системы .At the specified ratio of steps, both pairs of windings do not have a transformer connection between them and thereby form two independent electromagnetic systems.

В предлагаемом преобразователе, с целью получени большего диата-. зона вторичных частот, можно измен ть число пар полюсов обмоток статора и ротора путем соотвгтствуюшего переключени этих обмоток .In the proposed converter, in order to obtain a larger diatat-. the secondary frequency zone, it is possible to change the number of pole pairs of the stator and rotor windings by appropriately switching these windings.

Дл этой цели может быть использовано также изменение направлени враш;ени пол одной из статорных обмоток.For this purpose, changing the direction of the turn of the floor of one of the stator windings can also be used.

Вместо двух обмоток на статоре может быть использована только одна, составленна из двух последовательно соединенных обмоток, которые при питании трехфазным током образуют две системы вращаро17Instead of two windings on the stator, only one can be used, made up of two series-connected windings, which, when powered by three-phase current, form two systems of rotation

щихс нолей с различными числами нар полюсов. При это.м на роторе располагаютс две обмотки, одна из которых замыкаетс накоротко, а втора выводитс на три кольца, с которых производитс питание цепей преобразованной частоты.zeros with different numbers of drug poles. In this case, two windings are located on the rotor, one of which is short-circuited, and the second is output to three rings from which the circuits of the converted frequency are supplied.

Преобраз ема частота может также сниматьс со второй статорной обмотки, а первична частота подводитс из сети к первичной обмотке статора и через кольца - к соответствующей роторной обмотке.The converted frequency can also be removed from the second stator winding, and the primary frequency is supplied from the network to the primary stator winding and through the rings to the corresponding rotor winding.

Предмет изобретени Subject invention

Claims

1. A single-machine asynchronous frequency converter with two windings on the stator and two windings on the rotor, with different pitch of one and the other pair of ebmetoks, characterized in that the ratio of the steps of the first and second pairs of windings is expressed by an even n number.

2. The transducer according to claim 1, clause 5 and so that, in order to obtain a larger range of secondary frequencies, the number of pairs of poles of the stator and rotor windings can be changed by switching. yucheni these windings.

3. In the converter according to claim 1, 2 change the direction of rotation

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The field of one of the stator windings can be used to obtain additional frequencies.

4. The converter according to Claims 1, 2, 3, characterized in that both stator windings can be connected in series with each other, in which case one of the rotor windings is short-circuited and the second is outputted to

three rings from which the converted frequency is taken.

5. The converter according to claim 1, 2, 3, 4, characterized in that one of the rotor windings is short-circuited, and the primary stator winding and the second rotor are connected to the power supply through the rings, and the converted frequency is removed from the second stator winding.