Research on two-channel interleaved two-stage paralleled Buck DC-DC Converter for plasma cutting power supply

Author

Xi-jun Yang ; Hao Qu ; Chen Yao ; Ning-yun Zhang ; Hou-jun Tang ; Quan Chen ; Blaabjerg, Frede

Author_Institution

Key Lab. of Control of PT&C, SJTU, Shanghai, China

fYear

2014

fDate

5-8 Nov. 2014

Firstpage

914

Lastpage

919

Abstract

As for high power plasma power supply, due to high efficiency and flexibility, multi-channel interleaved multi-stage paralleled Buck DC-DC Converter becomes the first choice. In the paper, two-channel interleaved two- stage paralleled Buck DC-DC Converter powered by three-phase AC power supply is selected as research subject, dedicated for the use of plasma cutting machine of 2×45kW, and the passivity-based control over the converter is analyzed theoretically at first, then simulated by means of MATLAB/SIMULINK, finally implemented on the modular product prototype. From the obtained results, it can be concluded that the passivity-based controller can be easily designed and implemented, which brings about the global stability and reluctance to outer perturbation, system parameter variation and load fluctuation, which also brings about better current sharing due to fast respond to the variations and the use of phase-shift driving technology and current sharing technology.

Keywords

DC-DC power convertors; cutting tools; plasma devices; power supplies to apparatus; stability; MATLAB-SIMULINK simulation; current sharing technology; high power plasma cutting power supply; load fluctuation; modular product prototype; multichannel interleaved multistage paralleled buck DC-DC converter; passivity-based control; passivity-based controller; phase-shift driving technology; plasma cutting machine; stability; system parameter variation; three-phase AC power supply; two-channel interleaved two-stage paralleled buck DC-DC converter; DC-DC power converters; Equations; Inductors; Mathematical model; Plasmas; Power supplies; Switches; Buck DC-DC converter; Current sharing; Phase shift driving; Plasma cutting machine; passivity-based control;

fLanguage

English

Publisher

ieee

Conference_Titel

Electronics and Application Conference and Exposition (PEAC), 2014 International

Conference_Location

Shanghai

Type

conf

DOI

10.1109/PEAC.2014.7037981

Filename

7037981