Patent ID: 9473045
Filing Date: 2016-10-18
CPC Classification: H02M,Y02B

Claim Text:
1. A soft-switching and low input current ripple power inversion circuit for converting a DC voltage received at a DC input to an AC voltage, which is paralleled-connected with the DC input, and the soft-switching and low input current ripple power inversion circuit comprising: a top-cell comprising a first capacitor, a second capacitor, a first switch, and a first impedance adjusting unit, wherein the first impedance adjusting unit has a terminal ( a bottom-cell comprising a third capacitor, a second switch, and a second impedance adjusting unit, wherein the second impedance adjusting unit has a terminal ( at least one transformer comprising at least one secondary winding magnetically coupled to its corresponding primary winding within the first impedance adjusting unit and the second impedance adjusting unit; thereby, when the first switch and the second switch are turned on or off alternatively within one switching cycle, the AC voltage is generated at the secondary winding and a soft-switching operation on the switches is performed.