SU687524A1 - Device for the protection of frequency converter with intermediate dc link - Google Patents

Device for the protection of frequency converter with intermediate dc link

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Publication number
SU687524A1
SU687524A1 SU782601598A SU2601598A SU687524A1 SU 687524 A1 SU687524 A1 SU 687524A1 SU 782601598 A SU782601598 A SU 782601598A SU 2601598 A SU2601598 A SU 2601598A SU 687524 A1 SU687524 A1 SU 687524A1
Authority
SU
USSR - Soviet Union
Prior art keywords
protection
frequency converter
link
comparison circuit
output voltage
Prior art date
Application number
SU782601598A
Other languages
Russian (ru)
Inventor
Владимир Сергеевич Брыков
Юрий Васильевич Козаков
Александр Павлович Сивак
Original Assignee
Украинский Заочный Политехнический Институт
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 Украинский Заочный Политехнический Институт filed Critical Украинский Заочный Политехнический Институт
Priority to SU782601598A priority Critical patent/SU687524A1/en
Application granted granted Critical
Publication of SU687524A1 publication Critical patent/SU687524A1/en

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Description

щем органе равен нулю и напр жение усилител  9 равно нулю.The common organ is zero and the voltage of amplifier 9 is zero.

При уменьшении угла запаса устой-ШВОСТИ ниже допустимого из-за понижени  напр жени  ведущей сети или повышени  напр жени  иа входе инвертора в суммирующем органе течет ток на входе усилител  9 по вл етс  напр жение , которое через систему 10, II управлени  воздействует нд управл емый выпр митель .12, увеличива  фазу углов регулировани  последнего и уменьша , таким образом, входное капр женне инвертора.When the safety margin decreases below the allowable one, due to a decrease in the voltage of the driving network or an increase in the voltage, the input current of the amplifier 9 in the summing organ flows a voltage that, through the system 10, II control, acts on the controllable voltage. The rectifier .12, increasing the phase of the control angle of the latter and thus reducing the input voltage of the inverter.

1515

Claims (2)

Формула изобретени Invention Formula Устройство дл  защиты преобразовател  частоты с промежуточным звеном посто нного тока, содержащее датчикиDevice for protecting a frequency converter with an intermediate DC link containing sensors входного и выходного напр жени  инвертора , выходы которых через схему сравнени  и усилитель рассогласовани  подключены к системе управлени  выпр мител , отличающеес   тем, что, с целью повышени  надежности , схема сравнени  выполнена на стабилитроне и подключенных к датчику входного напр жени  последовательно соединенных диоде и двух резисторах , первый, из которых подключен к усилителю рассогласовани , а второй - через стабилитрон - к датчику выходного напр жени .input and output voltage of the inverter, whose outputs through the comparison circuit and the error amplifier are connected to the rectifier control system, characterized in that, in order to increase reliability, the comparison circuit is made on a zener diode and connected to the input voltage of a series-connected diode and two resistors The first of which is connected to the error amplifier, and the second through a zener diode to the output voltage sensor. Источники информации, прин тые во внимание при экспертизеSources of information taken into account in the examination 1,Глух Е.М. и Зеленов В.Е, Защита полупроводниковых преобразователей . М., энерги , 1970, с. 78.1, Glukh E.M. and Zelenov V.E., Protection of semiconductor converters. M., energy, 1970, p. 78 2.Авторское свидетельство СССР по за вке 2381567/24-072.Assignment of the USSR on the application 2381567 / 24-07 кл. Н 02 Н 7/10. 1976,cl. H 02 H 7/10. 1976
SU782601598A 1978-04-07 1978-04-07 Device for the protection of frequency converter with intermediate dc link SU687524A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
SU782601598A SU687524A1 (en) 1978-04-07 1978-04-07 Device for the protection of frequency converter with intermediate dc link

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SU782601598A SU687524A1 (en) 1978-04-07 1978-04-07 Device for the protection of frequency converter with intermediate dc link

Publications (1)

Publication Number Publication Date
SU687524A1 true SU687524A1 (en) 1979-09-25

Family

ID=20758430

Family Applications (1)

Application Number Title Priority Date Filing Date
SU782601598A SU687524A1 (en) 1978-04-07 1978-04-07 Device for the protection of frequency converter with intermediate dc link

Country Status (1)

Country Link
SU (1) SU687524A1 (en)

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