A Series Resonant Converter with Variable Frequency and Phase- Shift Control Applied to Electronic Arc Welding Mechines
碩士 === 國立中正大學 === 電機工程學系 === 84 === This thesis presents the analysis and design for a series- resonant converter with variable frequency and phase-shift control applied to electric arc welding machines. With the proposed control scheme, th...
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| Other Authors: | |
| Format: | Others |
| Language: | zh-TW |
| Published: |
1996
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| Online Access: | http://ndltd.ncl.edu.tw/handle/64623821383127967948 |
| Summary: | 碩士 === 國立中正大學 === 電機工程學系 === 84 === This thesis presents the analysis and design for a series-
resonant converter with variable frequency and phase-shift
control applied to electric arc welding machines. With the
proposed control scheme, the main switches of this converter
always hold zero-voltage switching (ZVS) from very light to full
load. The conventional output filter inductor is removed from
the load so as the assumption of a constant current sink is no
longer valid, thus complicating the analyses dramatically. The
operating principles of the converter applied to a welding
machine are described in detail from which the boundary
condition between continuous conduction mode (CCM) and
discontinuous conduction mode (DCM) are therefore derived, and
the design procedure is outlined as well. Computer simulated and
experimental results obtained from a prototype are presented to
confirm the analytical derivation.
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