A novel current initialization scheme for parallel resonant dc link inverter

Abstract

Abstract In this paper a novel current initialization scheme is proposed for a parallel resonant dc link inverter. The method of current initialization is based on the state transition analysis of the system as a boundary-value problem. It is shown that, for a given load current, it is possible to force the dc link voltage to go to zero at a prescribed time by properly choosing the initial dc link current. This technique makes it possible to operate the resonant dc link inverter without any zero-crossing failure, which is the most important issue for satisfactory operation of such an inverter. The proposed current initialization technique is validated through digital computer simulation studies and practical implementation results.