FPGA IMPLEMENTATION OF RACE CONTROL ALGORITHM FOR FULL BRIDGE PRCP CONVERTER

S.Kavitha, S.Joshibha Ponmalar, B.Chinthamani

Abstract: In this paper, the unedited race-control algorithm (RCA) for the full-bridge passive resonant commutated poles (FB-PRCP) converter is presented and implemented in cost effective field programmable gate-array. It compensates the drawbacks of that topology that are related to the slow dynamics of the auxiliary poles which are necessary to obtain zero-voltage transitions both at turn-on and turn-off conditions and makes possible its use in more general welding applications, such as manual metal arc welding, in which very fast responses are required. The proposed RCA is a simple variation of the traditional phase-shift technique, which leads to significant efficiency improvements. The guiding idea is to apply the phase-shift technique to both legs of the converter, contrarily to what has been done to date. The limitation in dynamics of the converter is completely eliminated and it gains much more readiness. The effectiveness of the RCA has been verified in simulation and it can be experimentally tested on a true converter..

Keywords: CONTROL ALGORITHM FOR FULL BRIDGE PRCP

DOI: https://doi.org/10.15623/ijret.2012.0103035