in series-
*Yamaguchi University, Yainaguchi .lapan
pamllel transformer resonant I3C-INC converter causes several serious pi’oblems in the PWM inverter-fed INC-LIC converter pow'er topologies. The large tums ratio and high voltage- isolation iequirement for the high voltage transformer exacerbates the transformer nonidealities. In particular, the leakage inductance and the parasitic capacitance existing in the secondary windings of the high-voltage transformer depend upon the high-voltage DC-DC converter for X ray power generator. The former causes undesirable volta(;e spikes which can dairiage circuit components, and the latter results in curi’ent spikes and slow' rise time of the output voltage. I3oth no-idealities can lead to greatly increase ssx'itching and snubber losses and reduce converter efficiency and reliability