Patent ID: 7122972

Claim:
A power conversion apparatus for a non-linear load, comprising: a pair of input terminals for connection to a DC voltage source; a first and a second capacitor connected in series coupled to said pair of input terminals; a first and a second diode coupled in parallel with said first and second capacitors respectively such that the diodes are reverse biased under said DC voltage source; an inductor coupled to a first node connecting said capacitors and diodes; a transformer comprising at least one primary winding and two secondary windings, said transformer having its primary winding coupled to said inductor and its secondary windings coupled in series at a second node, said secondary windings being constructed in a way to produce voltages with opposite polarities with respect to said second node coupling these two windings; a third terminal coupled to said primary winding of said transformer, for connection to a pulsating voltage source, such voltage source charging or discharging said first and second capacitors within one pulsating cycle; and a non-linear load coupled to said secondary windings for electrical power.