Lavreniuk A. The threephase -biphase power source direct-current for MAG welding.

Українська версія

Thesis for the degree of Candidate of Sciences (CSc)

State registration number

0407U002492

Thesis Registration Form

0407U002492.pdf

Applicant for

Lavreniuk Andrii Valentinovich

Specialization

05.03.06 - 3варювання та споріднені процеси і технології

Date of defense

06-06-2007

Specialized Academic Board

Д 26.182.01

E.O.Paton Elektric Welding Institute National Academy of scinces of Ukraine

Essay

Dissertation work is devoted to the further development of the theory, calculation and design of power sources (PS) traditional type for MAG. It is determined, that an optimum variant of the biphasic scheme of rectifier PS is the scheme with series associated rectifiers which are assembled by the two-half-period scheme with one middle point: one - controllable, another - uncontrollable. There is created PS for MAG on the basis of proposed scheme of rectifying which feeds from the threephase -biphase transformer. New designs of three-phase and threephase-biphase transformers with winded core which enables to lower weight and cost up to 28% in comparison with existing analogues. New designs of transformers can be used as at design of PS with various slopes of voltage-current characteristics (VCC), and in other electrotechnical devices. It is determined, that to guarantee the minimal sprinkling by MAG welding it is necessary to apply a reactor, with core which is not saturated by the high current by shortcircuit situation. It is proposed to use the complex analysis dotty dynamic VCC together with oscillograms and histograms of distribution of values welding current and voltage values as criteria of an estimation welding properties PS together with temporary characteristics of short circuits.

Thesis supervisor

Pentegov I.V.

Official opponents

Размишляєв О.Д.
Верещаго Є.М.
Волков І.В.

Files

Текст диссертации_Лавренюка АВ--01 Титулка.doc

Текст диссертации_Лавренюка АВ--02 СОДЕРЖАНИЕ.doc

Текст диссертации_Лавренюка АВ--03 ПЕРЕЧЕНЬ УСЛОВНЫХ СОКРАЩЕНИЙ.doc

Текст диссертации_Лавренюка АВ--04 ВВЕДЕНИЕ.doc

Текст диссертации_Лавренюка АВ--05 Раздел 1.doc

Текст диссертации_Лавренюка АВ--06 Раздел 2.doc

Текст диссертации_Лавренюка АВ--07 Раздел 3.doc

Текст диссертации_Лавренюка АВ--08 Раздел 4.doc

Текст диссертации_Лавренюка АВ--09 ЗАКЛЮЧЕНИЕ.doc

Текст диссертации_Лавренюка АВ--10 СПИСОК ИСП ИСТОЧНИКОВ.doc

Текст диссертации_Лавренюка АВ--11 Приложения А.doc

Текст диссертации_Лавренюка АВ--12 Приложения Б.doc

Текст диссертации_Лавренюка АВ--13 Приложения В.doc

Текст диссертации_Лавренюка АВ--14 Приложения Г.doc

автореферат_Лавренюка АВ.doc

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