Resonant power conversion circuit
View Patent ↗An apparatus and system for power conversion. In one embodiment, the apparatus comprises a transformer having a primary winding and a plurality of secondary windings comprising a first secondary winding, a second secondary winding, and a third secondary winding, the first, the second, and the third secondary windings wound in a tri-filar configuration; and a cyclo-converter comprising a plurality of switch pairs for converting an alternating current to an AC current, each switch pair in the plurality of switch pairs coupled between two lines of an AC output and having a different secondary winding of the plurality of secondary windings coupled between its switches, the plurality of switch pairs comprising a first switch pair, a second switch pair, and a third switch pair, wherein the first, the second, and the third secondary windings are coupled between drain terminals of the first, the second, and the third switch pair, respectively.
1. An apparatus for power conversion, comprising:
a transformer having a primary winding and a plurality of secondary windings, wherein the plurality of secondary windings comprises a first secondary winding, a second secondary winding, and a third secondary winding, and wherein the first secondary winding, the second secondary winding, and the third secondary winding are wound in a tri-filar configuration; and
a cyclo-converter comprising a plurality of switch pairs for converting an alternating current to an AC current, wherein each switch pair in the plurality of switch pairs (i) is coupled between two lines of an AC output and (ii) has a different secondary winding of the plurality of secondary windings coupled between its switches, wherein the plurality of switch pairs comprises a first switch pair, a second switch pair, and a third switch pair, and wherein the first secondary winding, the second secondary winding, and the third secondary winding are coupled between drain terminals of the first switch pair, the second switch pair, and the third switch pair, respectively.
2. The apparatus of claim 1 , wherein the first switch pair is coupled between a first AC live conductor line and a second AC live conductor line; the second switch pair is coupled between the second AC live conductor line and a third AC live conductor line; and the third switch pair is coupled between the first AC live conductor line and the third AC live conductor line.
3. The apparatus of claim 1 , wherein the first switch pair is coupled between a first AC live conductor line and a neutral line; the second switch pair is coupled between a second AC live conductor line and the neutral line; and the third switch pair is coupled between a third AC live conductor line and the neutral line.
4. A system for power conversion, comprising:
a DC source; and
a power converter, coupled to the DC source, for converting a DC current from the DC source to an AC current, wherein the power converter comprises (a) a transformer having a primary winding and a plurality of secondary windings, wherein the plurality of secondary windings comprises a first secondary winding, a second secondary winding, and a third secondary winding, and wherein the first secondary winding, the second secondary winding, and the third secondary winding are wound in a tri-filar configuration; and (b) a cyclo-converter comprising a plurality of switch pairs for converting an alternating current to the AC current, wherein each switch pair in the plurality of switch pairs (i) is coupled between two lines of an AC output and (ii) has a different secondary winding of the plurality of secondary windings coupled between its switches, wherein the plurality of switch pairs comprises a first switch pair, a second switch pair, and a third switch pair, and wherein the first secondary winding, the second secondary winding, and the third secondary winding are coupled between drain terminals of the first switch pair, the second switch pair, and the third switch pair, respectively.
5. The system of claim 4 , wherein the first switch pair is coupled between a first AC live conductor line and a second AC live conductor line; the second switch pair is coupled between the second AC live conductor line and a third AC live conductor line; and the third switch pair is coupled between the first AC live conductor line and the third AC live conductor line.
6. The system of claim 4 , wherein the first switch pair is coupled between a first AC live conductor line and a neutral line; the second switch pair is coupled between a second AC live conductor line and the neutral line; and the third switch pair is coupled between a third AC live conductor line and the neutral line.
7. The system of claim 4 , wherein the DC source is a renewable energy source.