RU2014117889A - METHOD FOR DETERMINING THE AVERAGE TEMPERATURE OF A SHORT-CLOSED WINDING OF AN ASYNCHRONOUS MOTOR - Google Patents

METHOD FOR DETERMINING THE AVERAGE TEMPERATURE OF A SHORT-CLOSED WINDING OF AN ASYNCHRONOUS MOTOR Download PDF

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RU2014117889A
RU2014117889A RU2014117889/28A RU2014117889A RU2014117889A RU 2014117889 A RU2014117889 A RU 2014117889A RU 2014117889/28 A RU2014117889/28 A RU 2014117889/28A RU 2014117889 A RU2014117889 A RU 2014117889A RU 2014117889 A RU2014117889 A RU 2014117889A
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temperature
determining
short
rotor
cold
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RU2014117889/28A
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RU2589453C2 (en
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Азад Мухамеджанович Шарипов
Виктор Михайлович Васильев
Богдан Геннадьевич Кулигин
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Научно-производственное объединение "ЭЛСИБ" Открытое акционерное общество
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Abstract

Способ определения средней температуры короткозамкнутой обмотки ротора асинхронного двигателя, заключающийся в регистрации затухающего напряжения статора, индуктированного затухающим полем ротора, при отключении из состояния холостого хода холодной и горячей машины, определения постоянных времени Ти Ткогда напряжение статора затухает до величины 0,368 начального напряжения Uперед отключением и последующего определения средней температуры короткозамкнутой обмотки по формуле:,где- температурный коэффициент для меди при температуре 0÷150°C, или- температурный коэффициент для алюминия при температуре 0÷150°C,t- температура ротора при первом измерении в холодном состоянии,t- температура охлаждающей среды при измерении в горячем состоянии.A method for determining the average temperature of the short-circuited winding of the rotor of an induction motor, which consists in registering the damped stator voltage induced by the damped field of the rotor, when disconnected from the idle state of a cold and hot machine, determining the time constants T and T When the stator voltage decays to 0.368 of the initial voltage U before disconnection and subsequent determination of the average temperature of the short-circuited winding according to the formula:, where is the temperature coefficient for copper at a temperature of 0 ÷ 150 ° C, or is the temperature coefficient for aluminum at a temperature of 0 ÷ 150 ° C, t is the rotor temperature at the first measurement in a cold state, t- temperature of the cooling medium when measured while hot.

Claims (1)

Способ определения средней температуры короткозамкнутой обмотки ротора асинхронного двигателя, заключающийся в регистрации затухающего напряжения статора, индуктированного затухающим полем ротора, при отключении из состояния холостого хода холодной и горячей машины, определения постоянных времени То хол и То гор, когда напряжение статора затухает до величины 0,368 начального напряжения Uо перед отключением и последующего определения средней температуры короткозамкнутой обмотки по формуле:The method of determining the average temperature of the short-circuited winding of the rotor of an induction motor, which consists in registering the decaying voltage of the stator induced by the decaying field of the rotor when disconnecting cold and hot machines from the idle state, determining the time constants T o cold and T o mountains, when the stator voltage decays to a value 0.368 of the initial voltage U about before disconnecting and the subsequent determination of the average temperature of the short-circuited winding according to the formula:
Figure 00000001
,
Figure 00000001
, где
Figure 00000002
- температурный коэффициент для меди при температуре 0÷150°C, илиWhere
Figure 00000002
- temperature coefficient for copper at a temperature of 0 ÷ 150 ° C, or
Figure 00000003
- температурный коэффициент для алюминия при температуре 0÷150°C,
Figure 00000003
- temperature coefficient for aluminum at a temperature of 0 ÷ 150 ° C, tхол - температура ротора при первом измерении в холодном состоянии,t cold - rotor temperature during the first measurement in a cold state, tохл - температура охлаждающей среды при измерении в горячем состоянии. OHL t - coolant temperature as measured in a hot state.
RU2014117889/28A 2014-04-30 2014-04-30 Method of determining average temperature of short-circuited winding of asynchronous motor RU2589453C2 (en)

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RU2711647C1 (en) * 2019-04-08 2020-01-17 ОАО "Научно-исследовательский институт технологии, контроля и диагностики железнодорожного транспорта" (ОАО "НИИТКД") Device and method for evaluation of technical condition of asynchronous motors

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SU609163A1 (en) * 1977-01-07 1978-05-30 Предприятие П/Я Г-4012 Arrangement for measuring overheating of winding of ac machine under load by varying dc resistance of the winding
JPS63204307A (en) * 1987-02-19 1988-08-24 Fanuc Ltd Overcurrent detector
FI95329C (en) * 1993-04-14 1996-01-10 Abb Industry Oy Method for monitoring the heating of a short-circuit motor
RU2386114C1 (en) * 2008-09-03 2010-04-10 Открытое акционерное общество "Всероссийский научно-исследовательский и проектно-конструкторский институт электровозостроения" (ОАО "ВЭлНИИ") Method for contactless measurement of temperature of windings of short-circuited rotor of variable-frequency asynchronous motor

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