SU501367A1 - Device for determining short-circuited windings of electrical machines - Google Patents

Device for determining short-circuited windings of electrical machines

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Publication number
SU501367A1
SU501367A1 SU1911278A SU1911278A SU501367A1 SU 501367 A1 SU501367 A1 SU 501367A1 SU 1911278 A SU1911278 A SU 1911278A SU 1911278 A SU1911278 A SU 1911278A SU 501367 A1 SU501367 A1 SU 501367A1
Authority
SU
USSR - Soviet Union
Prior art keywords
electrical machines
circuited
determining short
short
circuited windings
Prior art date
Application number
SU1911278A
Other languages
Russian (ru)
Inventor
Виталий Айзикович Горбачевский
Владимир Васильевич Иванов
Андрей Иванович Милюков
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 filed Critical
Priority to SU1911278A priority Critical patent/SU501367A1/en
Application granted granted Critical
Publication of SU501367A1 publication Critical patent/SU501367A1/en

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  • Testing Of Short-Circuits, Discontinuities, Leakage, Or Incorrect Line Connections (AREA)

Description

1one

Изобретение относитс  к устройствам дл  контрол  качества обмоток электрических машин, а именно к устройствам дл  определени  короткозамкнутых витков.The invention relates to devices for monitoring the quality of windings of electrical machines, namely, devices for determining short-circuited coils.

Известно устройство дл  определени  короткозамкнутых витков обмоток электрических машин, включаюш,ее чувствительный элемент в виде Ш-образиого магннтопровода с сигнальной о;бмоткой и обмоткой возбуждени , подключенной к источнику питани , и измерительный прибор. Магнитный поток обмотки возбуждени , расположенной на среднем стержне магнитопровода, замыкаетс  через магннтопровод провер емого ротора (статора ) и крайние стержни чувствительного элемента, на которых уложена сигнальна  обмотка, содержаш,а  две одинаковые катушки , соединенные последовательно-встречно.A device for determining short-circuited turns of the windings of electrical machines is known, including its sensitive element in the form of an H-shaped magnetic conductor with a signal winding and an excitation winding connected to a power source, and a measuring instrument. The magnetic flux of the excitation winding located on the middle core of the magnetic circuit closes through the magnetic circuit of the tested rotor (stator) and the extreme rods of the sensing element on which the signal winding is laid, and two identical coils connected in series-counter.

Амплитуды потоков в крайних стержн х измен ютс  при изменении магнитных проводимостей вследствие неравномерности воздушного зазора под крайними стержн ми. Изменение фазы потоков происходит лишь в том случае, если под одним из стержней чувствительного элемента оказываетс  короткозамкнутый виток.The amplitudes of the fluxes in the outermost rods change with a change in the magnetic conductivities due to the unevenness of the air gap under the outermost rods. The change in the phase of flows occurs only if there is a short-circuited turn under one of the rods of the sensing element.

Величина эдс, обусло вленна  изменением амплитуд магнитных потоков (помехи) соизмерима с величиной эдс от изменени  фаз потоков (сигнал). Это  вл етс  недостатк01М устройства , так как-приводит к ошибкам при разбраковке роторов (статоров) электрических машин ло короткозамкнутым виткам.The magnitude of the emf due to the change in the amplitudes of the magnetic fluxes (interference) is comparable with the magnitude of the emf from the change in the phases of the fluxes (signal). This is a disadvantage of the device, as it leads to errors when sorting out the rotors (stators) of electric machines for short-circuited turns.

Целью изобретени   вл етс  увеличение чувствительности устройства, что приводит к повышению эффективности контрол  короткозамкнутых витков обмоток электрических машин . Дл  этого в устройство контрол  введеныThe aim of the invention is to increase the sensitivity of the device, which leads to an increase in the efficiency of control of short-circuited windings of electric machines. For this, control devices are entered.

фазосдвигающее устройство и демодул тор. Фазосдвигающее устройство включено между источником питани  и клеммами опорного напр жени  демодул тора, вход которого подсоединен к сигнальной обмотке, а выход - кphase shifter and demodulator. A phase shifter is connected between the power source and the demodulator reference voltage terminals, the input of which is connected to the signal winding and the output to

измерительному прибору посто нного тока.measuring instrument direct current.

На фиг. 1 изображены чувствительный элемент и провер емый ротор; на фиг. 2- блоксхема устройства; на фиг. 3 - векторна  диаграмма электрических величин при наличииFIG. 1 shows the sensing element and the rotor to be tested; in fig. 2-block device; in fig. 3 - vector diagram of electrical quantities in the presence of

короткозамкнутых витков и одинаковых проводимост х ротора под крайними стержн ми чувствительного элемента.short-circuited turns and identical conductivities of the rotor under the extreme rods of the sensing element.

Устройство контрол  обмотки ротора 1 содержит чувствительный элемент 2, демодул тор 3, фазосдвигаюш,ее устройство 4 и измерительный прибор посто нного тока 5. Чувствительный элемент 2 представл ет собой Шобразный магнитонровод 6, на среднем стержне которого намотана обмотка возбуждени  7,The control device for the rotor winding 1 contains a sensing element 2, a demodulator 3, phase shifting, its device 4 and a measuring device of direct current 5. Sensing element 2 is a Shaped magnetic conductor 6, on the middle rod of which an excitation winding 7 is wound

подключенна  к источнику питани , а наconnected to a power source and on

Vus.iVus.i

Vus.zVus.z

Puz.dPuz.d

SU1911278A 1973-05-03 1973-05-03 Device for determining short-circuited windings of electrical machines SU501367A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
SU1911278A SU501367A1 (en) 1973-05-03 1973-05-03 Device for determining short-circuited windings of electrical machines

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SU1911278A SU501367A1 (en) 1973-05-03 1973-05-03 Device for determining short-circuited windings of electrical machines

Publications (1)

Publication Number Publication Date
SU501367A1 true SU501367A1 (en) 1976-01-30

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Family Applications (1)

Application Number Title Priority Date Filing Date
SU1911278A SU501367A1 (en) 1973-05-03 1973-05-03 Device for determining short-circuited windings of electrical machines

Country Status (1)

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SU (1) SU501367A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3584591A1 (en) * 2018-06-19 2019-12-25 Loewié, Chris Method for locating an electrical short circuit in a ctc conductor comprising multiple conductors and short-circuit detector for same

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3584591A1 (en) * 2018-06-19 2019-12-25 Loewié, Chris Method for locating an electrical short circuit in a ctc conductor comprising multiple conductors and short-circuit detector for same

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