RU94015286A - POWER CONVERTER FOR POWER SUPPLY BY A CONSTANT ELECTRIC ARC KEY - Google Patents

POWER CONVERTER FOR POWER SUPPLY BY A CONSTANT ELECTRIC ARC KEY

Info

Publication number
RU94015286A
RU94015286A RU94015286/07A RU94015286A RU94015286A RU 94015286 A RU94015286 A RU 94015286A RU 94015286/07 A RU94015286/07 A RU 94015286/07A RU 94015286 A RU94015286 A RU 94015286A RU 94015286 A RU94015286 A RU 94015286A
Authority
RU
Russia
Prior art keywords
overrunning clutch
semiconductor elements
load
electric arc
duration
Prior art date
Application number
RU94015286/07A
Other languages
Russian (ru)
Other versions
RU2115268C1 (en
Inventor
Дю Парк Жак
Гленски Кристоф
Бюрстейзен Мишель
Original Assignee
Сежелек Металь Систем
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
Priority claimed from FR9312661A external-priority patent/FR2704710B1/en
Application filed by Сежелек Металь Систем filed Critical Сежелек Металь Систем
Publication of RU94015286A publication Critical patent/RU94015286A/en
Application granted granted Critical
Publication of RU2115268C1 publication Critical patent/RU2115268C1/en

Links

Claims (1)

Преобразователь содержит по меньшей мере один трансформатор, первичная обмотка которого питается трехфазным переменным током и по меньшей мере одна вторичная обмотка которого выдает со своего выхода трехфазный ток, подаваемый на выпрямительные средства, с выхода которых на нагрузку подаются выпрямленные напряжение и ток, причем указанные выпрямительные средства содержат для каждой вторичной обмотки управляемые полупроводниковые элементы. Согласно изобретению, выпрямительные средства содержат схему типа колеса с обгонной муфтой, выполняющую функции колеса с обгонной муфтой, и указанные управляемые полупроводниковые элементы запускаются по существу меняющимися углами зажигания (отпирания), изменяемыми таким образом, что при уменьшении длительности проводящего состояния основных запущенных полупроводниковых элементов соответственно увеличивается длительность проводящего состояния элементов схемы "колеса типа обгонной муфты" и наоборот, что позволяет отдавать нагрузке по существу постоянные активную мощность или реактивную мощность независимо от колебаний полного сопротивления нагрузки.The converter contains at least one transformer, the primary winding of which is powered by three-phase alternating current and at least one secondary winding of which outputs from its output a three-phase current supplied to rectifier means, from the output of which rectifier means are applied to the load contain for each secondary winding controlled semiconductor elements. According to the invention, the rectifying means comprise a wheel type circuit with an overrunning clutch, performing the functions of a wheel with an overrunning clutch, and said controlled semiconductor elements are triggered by essentially varying ignition angles (unlocking), which are changed so that when the duration of the conducting state of the main running semiconductor elements decreases the duration of the conductive state of the elements of the scheme “overrunning clutch type wheels” is increased and vice versa, which allows to give the load They are essentially constant active power or reactive power regardless of the fluctuations of the load impedance.
RU94015286A 1993-10-22 1994-04-29 Power converter used to feed electric arc furnace with direct current and power converter unit RU2115268C1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
FR9305183 1993-04-30
FR9312661 1993-10-22
FR9312661A FR2704710B1 (en) 1993-04-30 1993-10-22 Improved power converter device for supplying direct current to an electric arc furnace.

Related Child Applications (1)

Application Number Title Priority Date Filing Date
RU98103752/09A Division RU2199838C2 (en) 1993-10-22 1994-04-29 Power converter for supplying electric arc furnace with dc current

Publications (2)

Publication Number Publication Date
RU94015286A true RU94015286A (en) 1995-12-10
RU2115268C1 RU2115268C1 (en) 1998-07-10

Family

ID=9452152

Family Applications (2)

Application Number Title Priority Date Filing Date
RU98103752/09A RU2199838C2 (en) 1993-10-22 1994-04-29 Power converter for supplying electric arc furnace with dc current
RU94015286A RU2115268C1 (en) 1993-10-22 1994-04-29 Power converter used to feed electric arc furnace with direct current and power converter unit

Family Applications Before (1)

Application Number Title Priority Date Filing Date
RU98103752/09A RU2199838C2 (en) 1993-10-22 1994-04-29 Power converter for supplying electric arc furnace with dc current

Country Status (1)

Country Link
RU (2) RU2199838C2 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DK2168024T3 (en) 2007-06-28 2013-04-08 Micro Motion Inc Instrument power regulator and method of adaptively providing an output voltage and an output current which together maintain a substantially constant electrical output power
IT201800004846A1 (en) * 2018-04-24 2019-10-24 METHOD OF ELECTRIC POWER SUPPLY OF AN ELECTRIC ARC OVEN AND RELATED APPARATUS

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